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Properties of n-butyl acetate

N-Butyl acetate, abbreviated as butyl acetate, has a chemical formula of CH3COO(CH2)3CH3. It is a colorless and transparent liquid with a pleasant fruity odor. It is an excellent organic solvent. It is suitable for ethyl cellulose, cellulose acetate butyrate, Polystyrene, methacrylic resin, chlorinated rubber and a variety of natural gums all have good solubility properties.

Product Nature:

This product is a colorless flammable liquid with pleasant fruit aroma; relative density (d420): 0.8825; freezing point -77.9°C; boiling point 126°C; flash point (open cup) 33°C; refractive index (nD20) 1.3951; vapor pressure (20℃)1.33kpa; heat of vaporization 309.4J/g; specific heat capacity (20℃) 1.91J(g·℃); miscible with organic solvents such as alcohols, ketones, ethers, etc.; more difficult to dissolve than low-grade homologues water.

Toxicity and protection:

Acute toxicity is small, but it has anesthesia and irritation. At a concentration of 34-50mg/L, it can stimulate human eyes and nose quite strongly, and it will cause anesthesia at high concentrations. The maximum allowable concentration in the operating place is 150 ppm. The operation site should be well ventilated, and the operator should prepare protective equipment. If it splashes into the eyes, it should be immediately rinsed with clean water and treated with drugs.

Packing and shipping:

Pack in iron or plastic drums, keep the seal tightly closed, store in a cool and ventilated place, avoid direct sunlight, keep away from fire sources, and store and transport in accordance with the regulations for flammable and dangerous goods.

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Pay attention to polyurethane paint construction

The polyurethane paint film is bright and plump, hard and wear-resistant, resistant to oil, acid, chemicals and industrial waste gas. It has good electrical properties and can be miscible with a variety of resins. The formula can be adjusted in a wide range to meet different needs. It is widely used in woodware, automobiles, airplanes, machinery, electrical appliances, instruments, plastics, leather, paper, fabrics, petrochemicals, etc.

Polyurethane paint is widely used in daily life by virtue of its excellent characteristics. So, what should be paid attention to when applying enamel wire paints?

1. The amount of paint should be determined according to the length of the active period of the paint, and the amount of paint should be used during the active period. To deploy.

2. When preparing or painting polyurethane paint, it should not be in contact with water, acid, alkali, alcohol. Especially the hardener should be sealed tightly after storage and opening to prevent moisture from entering.

3. Before coating, the surface of the substrate should be treated smoothly and cleanly to remove all kinds of dirt, and the moisture content of the substrate should be appropriate (specifically, it depends on the equilibrium moisture content of the area where the product is used, generally about 2% lower than it). When polyester paint is used as the top coat, shellac paint is not suitable for the primer. Nitro, polyurethane and polyvinyl butyral liquids can be used. After finishing with polyurethane as primer, polyester paint must be covered within 5h, otherwise the paint film adhesion will be affected.

4. Try to avoid painting enamel wire paints in rainy days or in high temperature and humidity in summer, and low temperature and high humidity in winter. Otherwise, the coating film is easy to "whiten". If you have to paint in the above environment, you can add an appropriate amount of PU anti-whitening agent to the paint, or properly heat the coated substrate to evaporate water vapor.

5. When painting PU paint, it should not be too thick at one time, otherwise it is easy to produce air bubbles and pinholes. The recoating interval should be determined according to the instructions. The interval should not be too long, otherwise the cross-linking between the coatings will be poor and the adhesion will be reduced. The long-cured paint film needs to be polished with sandpaper or wiped with a solvent before painting.

The enamel wire paints produced by BCC-enamel wire paints supplier. is of good quality and cheap.

Recommended reading:

What is the difference between Polyurethane paint and epoxy paint?

Production method of trimethylolpropane

Why does polyurethane paint crack?

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propan-1,3-diol precautions and operating specifications

propan-1,3-diol usage:

propan-1,3-diol,is a kind of compound,molecular formula is C3H8O2, molecular weight is 76.10, colorless and transparent viscous liquid. It can be used for a variety of drugs, new polyester PTT, pharmaceutical intermediates And the synthesis of new antioxidants.

propan-1,3-diol has no irritating effect on eyes and skin, and no reports of poisoning have been reported. But it is a combustible substance.

First aid measures for propan-1,3-diol

How to deal with propan-1,3-diol emergencies:

1. Skin contact: Take off contaminated clothing and rinse with running water.

2. Eye contact: Lift the eyelid and rinse with running water or normal saline.

3. Inhalation: Leave the scene to a place with fresh air. Seek medical attention.

4. Ingestion: Drink enough warm water to induce vomiting. Seek medical attention.

Fire-fighting measures:

When using propan-1,3-diol, we need to pay attention that propan-1,3-diol is combustible in case of open flames and high heat. How to deal with burning propan-1,3-diol? We need to move the container from the fire scene to an open place as much as possible. Spray water to keep the fire container cool until the end of the fire extinguishing. If the container in the fire scene has changed color or produces sound from the safety relief device, it must be evacuated immediately. Spray the escaping liquid with water to dilute it into a non-flammable mixture, and use water spray to protect firefighters. Extinguishing agent: water, mist-like water, alcohol-resistant foam, dry powder, carbon dioxide, sandy soil.

Emergency treatment:

Quickly evacuate personnel from the contaminated area to a safe area, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency response personnel wear self-contained positive pressure breathing apparatus and general work clothes. Cut off the source of leakage as much as possible. Prevent entry into restricted spaces such as sewers and flood drains. Small amount of leakage: absorb with sand, vermiculite or other inert materials. It can also be washed with a large amount of water, and the washing water is diluted and put into the waste water system. A large number of leaks: build a dike or dig a pit for storage. Use a pump to transfer to a tanker or a special collector for recycling or transport to a waste disposal site for disposal.

propan-1,3-diol Precautions:

Operation precautions: Airtight operation, full ventilation. Operators must undergo special training and strictly abide by the operating procedures. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent the vapor from leaking into the air in the workplace. Avoid contact with oxidants and reducing agents. Lightly load and unload during transportation to prevent damage to the package. Equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.

Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. It should be stored separately from oxidants and reducing agents, and avoid mixed storage. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials.

Contact control:

1. Engineering control: The production process is closed and fully ventilated.

2. Respiratory system protection: Generally, special protection is not required, but it is recommended to wear a self-priming filter gas mask (half mask) under special circumstances.

3. Eye protection: Generally, no special protection is needed.

4. Body protection: Wear general work protective clothing.

5. Hand protection: Wear protective gloves for general work.

6. Other protection: Smoking is strictly prohibited at the work site. Avoid long-term repeated contact. Regular physical examinations.

Recommended reading:

Production method of trimethylolpropane

What is the use of dipropylene glycol methyl ether?

What is Trioctyl Trimellitate?

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Are polyurethane varnishes and polyurethane topcoats a kind of paint?

Polyurethane anticorrosive paint is the most widely used coating in industrial anticorrosion. Both polyurethane varnish and polyurethane topcoat belong to the topcoat series. The biggest feature of polyurethane anticorrosive paint is high weather resistance, which can well maintain the gloss and chromaticity of the paint film color. Both polyurethane varnish and polyurethane topcoat are weather resistant. Are these two paints a kind of paint?

Introduction of polyurethane varnish

Polyurethane varnish, as the name suggests, is a kind of paint and paint. The composition of polyurethane varnish is very complex, it consists of solvents, additives and alkyd resins and other substances. Polyurethane varnish has the characteristics of fullness, brightness, hardness and wear resistance, so it is very popular among people.

Purpose of polyurethane varnish:

The reason why people like polyurethane varnish is because it has the following uses. First of all, the first use of polyurethane varnish is to paint wooden furniture. We all know that wooden furniture will rot easily if it is not painted, and it will not be smooth. Therefore, polyurethane varnish must be used for painting. Another use of polyurethane varnish is to protect metal surfaces. If metal is exposed to the air for a long time, it will rust, so polyurethane varnish can effectively protect the metal and prevent rust.

Acrylic polyurethane topcoat use

Acrylic polyurethane topcoat is composed of hydroxy acrylic resin, aliphatic isocyanate as base material, rutile titanium dioxide, coloring pigments, additives and so on. It has excellent weather resistance, gloss retention and color retention, the paint film is tough, good gloss, not easy to chalk, yellowing, good decoration, and has good chemical resistance, water resistance, impact resistance and abrasion resistance . Suitable for protective coatings on the surface of steel structures such as railway (highway) steel bridges, port machinery, construction steel structures, transportation facilities, mechanical power equipment, petrochemical pipelines, equipment, oil storage tanks and reactor walls, offshore oil drilling platforms, etc. Topcoat.

Are polyurethane varnishes and polyurethane topcoats a kind of paint?

They are all polyurethane paints, but the colors are different.

The polyurethane varnish is colorless and transparent and has no color. Polyurethane topcoat is made of colors, such as black, white, gray, red, yellow, blue, and green.

Polyurethane topcoat has high gloss and good decorative appearance. It can be coated with polyurethane varnish to play a role in glossing and improve the texture of the paint film.

Epoxy primer+polyurethane topcoat+polyurethane varnish is a matching scheme. For high appearance requirements, varnish can be used. If it is not high, varnish can be used.

Recommended reading:

What is the difference between Polyurethane paint and epoxy paint?

Production method of trimethylolpropane

Why does polyurethane paint crack?

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What kind of paint is polyurethane paint? use?

Polyurethane paint is a type of coating with polyurethane as the main film-forming substance. It has good wear resistance, excellent chemical resistance, oil resistance and solvent resistance. The paint film is bright and plump.

Purpose of polyurethane paint:

Polyurethane paint is widely used as anticorrosive paint for chemical equipment and storage tank pipelines. And for the coating of structures and mechanical equipment under high temperature, high humidity and marine climate conditions. It is also used for railway bridge cover. Varnish can be used for woodware.

Polyurethane paint has both protective and decorative properties, and can be used for the coating of high-end woodware, pianos, and large passenger aircraft.

Polyurethane can be formulated into an excellent adhesive. Therefore, the coating film has excellent adhesion to various surfaces (metal, wood, rubber, concrete, certain plastics, etc.).

Polyurethane coating film has excellent chemical resistance, acid, alkali, salt solution, and petroleum products, so it can be used as maintenance coating for drilling platforms, ships, and chemical plants, as well as the inner wall lining of petroleum storage tanks.

Polyurethane paint can be dried at high temperature and can be cured at low temperature. Polyurethane can be cured normally at 0℃, so the construction season is long. Because it can be cured quickly at room temperature, it can be constructed at room temperature for large projects such as large oil tanks and large aircraft to obtain an effect better than ordinary baking paint.

Polyurethane paint is generally used as primer or matching epoxy primer or polyurethane primer for coating and steel structures, machinery, equipment, machine tools, instrumentation, chassis, pipe fittings, metal parts, etc. Different matching will affect the protective effect of the paint.

Recommended reading:

What are the advantages of Polyurethane paint?

What is the difference between Polyurethane paint and epoxy paint?

Pay attention to polyurethane paint construction

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Pay attention to polyurethane paint construction

The polyurethane paint film is bright and plump, hard and wear-resistant, resistant to oil, acid, chemicals and industrial waste gas. It has good electrical properties and can be miscible with a variety of resins. The formula can be adjusted in a wide range to meet different needs. It is widely used in woodware, automobiles, airplanes, machinery, electrical appliances, instruments, plastics, leather, paper, fabrics, petrochemicals, etc.

Polyurethane paint is widely used in daily life by virtue of its excellent characteristics. So, what should be paid attention to when applying enamel wire paints?

1. The amount of paint should be determined according to the length of the active period of the paint, and the amount of paint should be used during the active period. To deploy.

2. When preparing or painting polyurethane paint, it should not be in contact with water, acid, alkali, alcohol. Especially the hardener should be sealed tightly after storage and opening to prevent moisture from entering.

3. Before coating, the surface of the substrate should be treated smoothly and cleanly to remove all kinds of dirt, and the moisture content of the substrate should be appropriate (specifically, it depends on the equilibrium moisture content of the area where the product is used, generally about 2% lower than it). When polyester paint is used as the top coat, shellac paint is not suitable for the primer. Nitro, polyurethane and polyvinyl butyral liquids can be used. After finishing with polyurethane as primer, polyester paint must be covered within 5h, otherwise the paint film adhesion will be affected.

4. Try to avoid painting enamel wire paints in rainy days or in high temperature and humidity in summer, and low temperature and high humidity in winter. Otherwise, the coating film is easy to "whiten". If you have to paint in the above environment, you can add an appropriate amount of PU anti-whitening agent to the paint, or properly heat the coated substrate to evaporate water vapor.

5. When painting PU paint, it should not be too thick at one time, otherwise it is easy to produce air bubbles and pinholes. The recoating interval should be determined according to the instructions. The interval should not be too long, otherwise the cross-linking between the coatings will be poor and the adhesion will be reduced. The long-cured paint film needs to be polished with sandpaper or wiped with a solvent before painting.

The enamel wire paints produced by BCC-enamel wire paints supplier. is of good quality and cheap.

Recommended reading:

What is the difference between Polyurethane paint and epoxy paint?

Production method of trimethylolpropane

Why does polyurethane paint crack?

[baichuannew-material]

What is the difference between Polyurethane paint and epoxy paint?

Polyurethane paint

and epoxy paint are both industrial paints. But there is a big difference between the two.

BCC

-Polyurethane paint for sale. Let's explain the difference between them in detail below:

1. Product ingredients:

Polyurethane paint: a two-component polyurethane anticorrosive topcoat composed of synthetic resin as base material, coloring pigment and curing agent.

Epoxy paint: It is composed of epoxy resin, extender pigment and curing agent.

2. Product appearance:

Polyurethane paint: The paint film is plump, the color is gorgeous, and the decoration is good.

Epoxy paint: Although the color is various and adjustable, it is slightly less decorative than Polyurethane paint compared to Polyurethane paint.

3. Product use: Polyurethane paint: Because of its full paint film, rich and adjustable color, and good decorative properties, it is mostly used as a top coat. However, Polyurethane paint has poor weather resistance and is easy to yellow. Therefore, it is suitable for metal protection in indoor environments. It is not suitable for outdoor use. Generally, it is equipped with epoxy primer and polyurethane primer for coating and steel structures, machinery, equipment, machine tools, etc. Instrumentation, chassis, pipe fittings, metal parts, etc. Epoxy paint: Since epoxy paint has poor weather resistance and is easy to pulverize, it is mostly used as a primer, such as anticorrosive coating for indoor steel structures, mechanical equipment, etc., can also be used as a topcoat. Epoxy primer has a wide range of uses and excellent supporting performance. 4. Corrosion resistance: Polyurethane paint: Polyurethane paint has strong acid resistance Epoxy paint: Epoxy paint has strong alkali resistance, and the moisture and heat resistance of epoxy paint is slightly better than Polyurethane paint 5. Respective defects: Polyurethane paint: Polyurethane paint is prone to yellowing. Epoxy paint: Epoxy paint is prone to chalking when used outdoors. Summary: In different application areas, choosing suitable coatings can give full play to the coating effect. For these two paint products, we concluded that the mechanical equipment in the ordinary indoor environment is more suitable to choose Polyurethane paint, and when the indoor is humid and warm, the epoxy paint is more suitable.

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Production method of trimethylolpropane

Trimethylolpropane is an organic compound, which is widely used in the manufacture of composite solid propellant charge coating and thermal insulation layer, and can also be used as a resin modifier and crosslinking agent. So, how is trimethylolpropane produced?

Production method of trimethylolpropane

The n-butyraldehyde and formaldehyde undergo an aldol condensation reaction under alkaline conditions. The reaction solution is concentrated to remove salt, and then decolorized and purified with ion exchange resin, and finally evaporated, cooled, and rolled with a thin film evaporator to obtain a finished product. Raw material consumption quota: n-butyraldehyde (≥95%) 950kg/t, formaldehyde (37%) 3400kg/t. Refining method: generally refining by vacuum distillation. Due to the mixing of sodium formate during manufacture, it is prone to pyrolysis, it needs to be removed with ion exchange resin first, and ammonium salt, hydroquinone or α-naphthol is added as stabilizer during distillation. If further refining is needed, ether acetone can be used.

1. Perform recrystallization. Condensation and disproportionation method using triethylamine as a catalyst. This method uses n-butyraldehyde and formaldehyde as raw materials and triethylamine as a catalyst for aldol condensation reaction.

2. Dimethylolbutyraldehyde will react with excess formaldehyde and alkali to produce trimethylolpropane. The amine salt decomposes and recovers the catalyst triethylamine, which is then purified in a rectifying tower to obtain trimethylolpropane.基propane. The reaction formula is as follows: Condensation hydrogenation method uses n-butyraldehyde and formaldehyde as raw materials, and triethylamine as a catalyst for aldol condensation reaction.

3.-Dimethylolbutanal is then catalytically hydrogenated to generate trimethylolpropane, and the hydrogenated reaction liquid is distilled under reduced pressure to obtain the product trimethylolpropane. Hydrogenation catalysts are generally divided into two categories: one is a palladium-carbon catalyst, the reaction conditions are mild, the general reaction temperature is 140 ℃, the reaction pressure is 0.98 MPa, but the price is more expensive; the other is a copper-based catalyst, the carrier is γ For aluminum oxide, the operating conditions are 130°C reaction temperature and 3.0 MPa pressure.

Bcc-Trimethylolpropane manufacturer, the products produced are of good quality and low price. If you want to buy Trimethylolpropane in bulk, here is a good choice.

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Precautions for the use of N-butyl acetate

Precautions for

N-Butyl Acetate

usage:1. Flammable liquid and vapor

2. May cause drowsiness or dizziness.

3. Harmful to aquatic organisms.

4. Statement of preventive measures

5. Keep away from heat/sparks/open flames/hot surfaces. - No smoking.

6. Avoid breathing dust/fume/gas/mist/vapor/spray.

7. Wear protective gloves/protective clothing, and wear goggles/face shields.

8. If on the skin (or hair): Take off all contaminated clothing immediately. Clean with water

9. Wash/rinse the skin.

First aid measures when accidentally contaminated with n-butyl acetate

1. General information

Take off soiled and soaked clothing immediately and isolate it safely. Pay attention to self-protection. In any case, please show the safety data sheet to the doctor.

2. Skin

Take off all contaminated clothes and shoes, wash immediately with soap and plenty of water. If symptoms persist, seek medical attention.

3. Eyes

Rinse immediately with plenty of water, including the lower eyelids, for at least 15 minutes. Call a doctor immediately.

4. Inhalation

Keep resting. Move to fresh air. Call a doctor immediately.

If inhaled by mistake: Move the victim to a place with fresh air and keep a comfortable position for breathing and rest. If you feel unwell, call a detoxification center or see a doctor. Avoid release to the environment.

BCC

-N-Butyl Acetate manufacturer. Has a large-scale production base and scientific production process. The products produced are of good quality and cheap. Support packaging customization.

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What is the use of n-butyl acetate?

As a chemical raw material, what are the applications of n-butyl acetate in industrial use?

N-Butyl Acetate application:

1. Used in collodion, nitrocellulose, varnish, artificial leather, medicine, plastics and perfume industries. It is an excellent organic solvent that can dissolve rosin, polyvinyl acetate, polyacrylate, polyvinyl chloride, chlorinated rubber , Eucommia gum, polymethyl methacrylate, etc.

2. Used as analytical reagents, chromatographic analysis standard materials and solvents

3. It is an excellent organic solvent, widely used in nitrocellulose varnish, used as a solvent in the processing of artificial leather, fabrics and plastics, and also used in the perfume industry

4. GB 2760-96 stipulates that it is permitted to use edible spices. As a spice, it is widely used in the preparation of banana, pear, pineapple, apricot, peach, strawberry, and berry flavors. It can also be used as a solvent for natural rubber and synthetic resin.

5. Occasionally used in fruit-flavored flavors, it is mainly used for its good spreading power, and it is more suitable for use as a top fragrance, but the amount should be small, so as not to stand out alone and affect the effect. It can be widely used in edible flavors such as apricots, bananas, peaches, pears, pineapples, raspberries, and strawberries.

6. Excellent organic solvent, good for cellulose acetate butyrate, ethyl cellulose, chlorinated rubber, polystyrene, methacrylic resin and many natural resins such as tannin extract, manila gum, damar resin, etc. Solubility. Widely used in nitrocellulose varnish, used as a solvent in the processing of artificial leather, fabrics and plastics, used as an extractant in various petroleum processing and pharmaceutical processes, and also used in spice compounding and apricot, banana, pear, pineapple, etc. The ingredients of various fragrances.

7. Commonly used organic solvents, verification of thallium, tin and tungsten, determination of molybdenum and rhenium, antibiotic extractant.

BCC-N-Butyl Acetate supplier. Have a scientific production process and a large-scale production base. The N-Butyl Acetate produced is cheap and of good quality.

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Introduction to ethyl acetate

Ethyl acetate  is also called ethyl acetate. Pure ethyl acetate is a colorless, transparent and aromatic liquid. It is a fine chemical product with a wide range of uses. It has excellent solubility, quick-drying, and a wide range of uses. It is a very important organic chemical raw material and excellent The industrial solvents are widely used in the production process of acetate fiber, ethyl fiber, chlorinated rubber, vinyl resin, cellulose acetate resin, synthetic rubber, paint and paint.

Ethyl Acetate Application field

The main uses of Ethyl acetate solvent are: as an industrial solvent, used in coatings, adhesives, ethyl cellulose, artificial leather, linoleum colorants, artificial fibers and other products; as an adhesive, used in printing inks, artificial pearls Production; as an extractant, used in the production of medicines, organic acids and other products; as a spice raw material, used as the main raw material for pineapple, banana, strawberry and other fruit flavors and whiskey, cream and other spices.

   In some developed countries, as a non-toxic and pollution-free solvent, it is gradually replacing solvents containing benzene, methyl ethyl ketone and other solvents that are harmful to the human body and the environment. The current production routes of ethyl acetate solvent are divided into esterification method, acetaldehyde condensation method, ethylene addition method and ethanol dehydrogenation method. The ethanol dehydrogenation method adopted by our company is a new technology developed in the late 1990s. It can convert ethanol into ethyl acetate through one-step dehydrogenation, and at the same time generate hydrogen as a by-product. The ethyl acetate produced by this method has high purity, low water content and various heavy metals and other impurities, and the quality exceeds national quality standards.

  (Molecular formula CH3COOC2H5, relative molecular mass is 88.11)

   Product name: ethyl acetate Appearance: transparent liquid, no suspended impurities Main indicators: color (platinum-cobalt color number) ≤ 10 density ρ20 0.897-0.902 g/cm3 ethyl acetate ≥ 99.0% moisture ≤ 0.10%

Product use: Important organic chemical raw material, widely used in perfume, paint, printing ink and food industry.

BCC-Ethyl Acetate manufacturer, ethyl acetate for sale. The price of ethyl acetate produced by BCC-Ethyl Acetate is cheap and the quality is good. If you want to buy ethyl acetate solvent, here is a good choice.

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Introduction of enameled wire

Winding wires used in electrical equipment are usually called magnetic wires. Magnet wires are roughly divided into enameled wires (insulation coated) and coated wires (fiber/film insulation) and their combinations. The two types of magnetic wires and their performance are very different. The enameled wire paint is widely used in the production of magnetic wire.

ASTM (American Society for Testing and Materials) B193, no more than 0.017241 ohm (square millimeter/meter), the film or coating should meet the latest version of ANSI, ASTM or NEMA applicable standards, and modify the specified resin. The modified resin is Chemically changed resin, or containing one or more additives to retain the basic chemical characteristics of the original resin to enhance certain performance or application characteristics, the coated conductor needs to meet all the required test requirements of the appropriate NEMA standard (UL certification project) .

The wire should be coated or covered with a smooth continuous insulation layer, and meet the nominal diameter, the range of resistance deviation is 3.5%, the insulation layer thickness requirements are consistent, the difference does not exceed 1um, the film coating layer should be smooth and continuous, without stripes, bubbles and foreign objects .

The choice of paint film material is generally based on the type of resin used for the primer and outer coating.

Polyurethane coatings are generally polymerized by polyisocyanates and polyols. Thinners are added to adjust the viscosity. Insulation materials generally include polyurethane toluol leveling agents. Different contents will affect the performance of the paint film, including breakdown voltage, softening breakdown voltage . The painting method is generally divided into two ways: mold and felt. The larger diameter chooses the mold to paint, and the thinner chooses the felt to paint.

BCC-Enamel Wire Paints manufacturer has a large-scale scientific production process. The Enamel Wire Paints produced are of good quality and cheap. If you want to buy Enamel Wire Paints, here is a good choice.

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Introduction of n-butyl acetate

Acetate is an acetate product, widely used in solvents, plasticizers, surfactants and polymer monomers.

N-butyl acetate uses:

There are 4 isomers of n-butyl acetate. But only n-butyl acetate and isobutyl acetate are the most useful in industry. Butyl acetate is mainly used as paint solvent. Because of its good fluidity and scratch resistance, it can be used in film coating resins. Such as nitrocellulose, butyl acetate cellulose, polystyrene and methyl methacrylate resins. It can also be widely used as a solvent for the manufacture of artificial leather, textiles and plastics, as an extractant for oils and medicines, and as a component of perfumes and synthetic fragrances. Butyl acetate can also be used as a dehydrating agent. They can form a ternary azeotrope with water.

Production process of butyl acetate:

The main catalyst for the industrial production of butyl acetate is sulfuric acid. It is produced by esterification of acetic acid and butanol in the presence of sulfuric acid catalyst. Acetic acid, butanol and sulfuric acid are heated to 89°C in the reactor. After the reaction, the vapor containing butyl acetate, butanol and water is removed and condensed, and the upper layer is sent to a tower with a reboiler in the lower part. Unreacted alcohol is flashed and recycled to the reactor. The crude ester mixture is distilled a second time to separate butyl acetate from other by-products.

BCC-Propyl Acetate supplier, sell N-propyl acetate. With a large-scale production base, the products produced are of good quality and cheap.

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What are the advantages of Polyurethane paint?

Polyurethane paint, a building paint material, may not be very familiar to everyone. In fact, Polyurethane paint is a kind of paint making material. The paint surface that Polyurethane paint brushes is relatively strong, the surface is full of gloss, and the adhesion is very strong, so it is marketed and decorated. There are more people who use it. What are the advantages of Polyurethane paint? I will take you to learn more about it.

Advantages of Polyurethane paint

1. The characteristic of polyester paint is that it can form acyclic and/or cyclic hydrogen bonds between polymer molecules. Under the action of external force, the hydrogen bonds can separate and absorb external energy (20-25kJ per mole). When the external force is removed, the hydrogen bond can be reconstituted from the beginning. The cleavage of the hydrogen bond and the reversible repetition of the reconstitution make the Polyurethane paint film highly resistant to mechanical abrasion and resistance. Compared with other paints, under the same hardness conditions, Polyurethane paint film has a high breaking elongation due to the effect of hydrogen bonds, so it is widely used as floor paint, overtime paint, high decorative anticorrosive paint, etc.

2. Some types of coatings (such as epoxy, chlorinated rubber, etc.) have good protection and poor decoration; some types (such as nitrocellulose paint, etc.) have good decoration but poor protection. However, Polyurethane paint is both protective and decorative, and can be used for the coating of high-end woodware, pianos, and large passenger aircraft.

3. Strong paint film adhesion. Polyurethane, like epoxy, can be equipped as an excellent adhesive. Therefore, the coating film has excellent adhesion to a variety of surfaces (metal, wood, rubber, concrete, certain plastics, etc.). The author's experience believes that the adhesion of Polyurethane paint is slightly inferior to epoxy paint for some metal surfaces; but for rubber, Polyurethane paint surpasses epoxy paint.

4. The elasticity of the coating film can be adjusted according to the demand. It can be adjusted from a very strong coating to a very flexible elastic coating. Usually paints such as epoxy, unsaturated polyester, amino alkyd, etc. can only It is difficult to impart high elasticity to a rigid coating.

5. The coating film has excellent chemical resistance, acid, alkali, salt solution, and petroleum products, so it can be used as a protective coating for drilling channels, ships, and chemical plants, as well as for coating the inner wall of petroleum storage tanks.

6. It can be dried at high temperature and can be cured at low temperature. In the typical room temperature curing coatings: epoxy, polyurethane, unsaturated polyester 3 types, epoxy and unsaturated polyester are difficult to cure under 10℃, as long as the polyurethane can be cured normally at 0℃, so it can be applied. long. Because it can cure quickly at room temperature, it can be constructed at room temperature for large-scale projects such as large oil tanks and large aircrafts to achieve better effects than general baking paints.

7. Polyurethane paint can be made into types that can withstand low temperatures of -40°C. It can also be made into high temperature resistant insulating varnish, with performance close to polyimide.

8. The electromagnetic wire coated with Polyurethane paint can be automatically tinned in the molten solder without scraping paint, which is especially suitable for the installation of telecommunications equipment and meters.

9. It can cooperate with polyester, polyether, epoxy, alkyd, polyacrylate, cellulose acetate butyrate, vinyl chloride vinyl acetate copolymer resin, asphalt, drying oil, etc. to make paints. It can be painted according to different There are many types of requests.

10. It can be made into a variety of shapes such as solvent type, liquid solvent-free type, powder, water-based, single filling, two filling, etc., satisfying different needs.

BCC-Polyurethane paint for sale. With a large-scale production base, the Polyurethane paint produced is of good quality and cheap.

[baichuannew-material]

Precautions for the use of N-butyl acetate

Precautions for

N-Butyl Acetate

usage:1. Flammable liquid and vapor

2. May cause drowsiness or dizziness.

3. Harmful to aquatic organisms.

4. Statement of preventive measures

5. Keep away from heat/sparks/open flames/hot surfaces. - No smoking.

6. Avoid breathing dust/fume/gas/mist/vapor/spray.

7. Wear protective gloves/protective clothing, and wear goggles/face shields.

8. If on the skin (or hair): Take off all contaminated clothing immediately. Clean with water

9. Wash/rinse the skin.

First aid measures when accidentally contaminated with n-butyl acetate 1. General information Take off soiled and soaked clothing immediately and isolate it safely. Pay attention to self-protection. In any case, please show the safety data sheet to the doctor. 2. Skin Take off all contaminated clothes and shoes, wash immediately with soap and plenty of water. If symptoms persist, seek medical attention. 3. Eyes Rinse immediately with plenty of water, including the lower eyelids, for at least 15 minutes. Call a doctor immediately. 4. Inhalation Keep resting. Move to fresh air. Call a doctor immediately. If inhaled by mistake: Move the victim to a place with fresh air and keep a comfortable position for breathing and rest. If you feel unwell, call a detoxification center or see a doctor. Avoid release to the environment. BCC-N-Butyl Acetate manufacturer. Has a large-scale production base and scientific production process. The products produced are of good quality and cheap. Support packaging customization.

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What is the use of n-butyl acetate?

As a chemical raw material, what are the applications of n-butyl acetate in industrial use?

N-Butyl Acetate application:

1. Used in collodion, nitrocellulose, varnish, artificial leather, medicine, plastics and perfume industries. It is an excellent organic solvent that can dissolve rosin, polyvinyl acetate, polyacrylate, polyvinyl chloride, chlorinated rubber , Eucommia gum, polymethyl methacrylate, etc.

2. Used as analytical reagents, chromatographic analysis standard materials and solvents

3. It is an excellent organic solvent, widely used in nitrocellulose varnish, used as a solvent in the processing of artificial leather, fabrics and plastics, and also used in the perfume industry

4. GB 2760-96 stipulates that it is permitted to use edible spices. As a spice, it is widely used in the preparation of banana, pear, pineapple, apricot, peach, strawberry, and berry flavors. It can also be used as a solvent for natural rubber and synthetic resin.

5. Occasionally used in fruit-flavored flavors, it is mainly used for its good spreading power, and it is more suitable for use as a top fragrance, but the amount should be small, so as not to stand out alone and affect the effect. It can be widely used in edible flavors such as apricots, bananas, peaches, pears, pineapples, raspberries, and strawberries.

6. Excellent organic solvent, good for cellulose acetate butyrate, ethyl cellulose, chlorinated rubber, polystyrene, methacrylic resin and many natural resins such as tannin extract, manila gum, damar resin, etc. Solubility. Widely used in nitrocellulose varnish, used as a solvent in the processing of artificial leather, fabrics and plastics, used as an extractant in various petroleum processing and pharmaceutical processes, and also used in spice compounding and apricot, banana, pear, pineapple, etc. The ingredients of various fragrances.

7. Commonly used organic solvents, verification of thallium, tin and tungsten, determination of molybdenum and rhenium, antibiotic extractant.

BCC-N-Butyl Acetate supplier. Have a scientific production process and a large-scale production base. The N-Butyl Acetate produced is cheap and of good quality.

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Introduction to ethyl acetate

Ethyl acetate  is also called ethyl acetate. Pure ethyl acetate is a colorless, transparent and aromatic liquid. It is a fine chemical product with a wide range of uses. It has excellent solubility, quick-drying, and a wide range of uses. It is a very important organic chemical raw material and excellent The industrial solvents are widely used in the production process of acetate fiber, ethyl fiber, chlorinated rubber, vinyl resin, cellulose acetate resin, synthetic rubber, paint and paint.

Ethyl Acetate Application field

The main uses of Ethyl acetate solvent are: as an industrial solvent, used in coatings, adhesives, ethyl cellulose, artificial leather, linoleum colorants, artificial fibers and other products; as an adhesive, used in printing inks, artificial pearls Production; as an extractant, used in the production of medicines, organic acids and other products; as a spice raw material, used as the main raw material for pineapple, banana, strawberry and other fruit flavors and whiskey, cream and other spices.

   In some developed countries, as a non-toxic and pollution-free solvent, it is gradually replacing solvents containing benzene, methyl ethyl ketone and other solvents that are harmful to the human body and the environment. The current production routes of ethyl acetate solvent are divided into esterification method, acetaldehyde condensation method, ethylene addition method and ethanol dehydrogenation method. The ethanol dehydrogenation method adopted by our company is a new technology developed in the late 1990s. It can convert ethanol into ethyl acetate through one-step dehydrogenation, and at the same time generate hydrogen as a by-product. The ethyl acetate produced by this method has high purity, low water content and various heavy metals and other impurities, and the quality exceeds national quality standards.

  (Molecular formula CH3COOC2H5, relative molecular mass is 88.11)

   Product name: ethyl acetate Appearance: transparent liquid, no suspended impurities Main indicators: color (platinum-cobalt color number) ≤ 10 density ρ20 0.897-0.902 g/cm3 ethyl acetate ≥ 99.0% moisture ≤ 0.10%

Product use: Important organic chemical raw material, widely used in perfume, paint, printing ink and food industry.

BCC-Ethyl Acetate manufacturer, ethyl acetate for sale. The price of ethyl acetate produced by BCC-Ethyl Acetate is cheap and the quality is good. If you want to buy ethyl acetate solvent, here is a good choice.