Adipate Esters are esters of adipic acid. Adipic acid reacts with various alcohols to form related adipate esters. Common adipate esters are dimethyl adipate, dioctyl adipate (DOA), dibutyl adipate, diisobutyl adipate, dimethyl adipate CAS No 627-93-0 dimethyl hexanedioate.
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Dimethyl Adipate (DMA) is the methyl ester of adipic acid, a colorless and transparent liquid. And it has a density of 1.06 g/ml (20℃), a boiling point of 109-110 ℃@ 14 mm, a freezing point of 8℃, as well as a flash point of 107℃. Above all, people widely use
Diisobutyl adipate is a colorless and transparent oily liquid with a boiling point of 293°C (normal pressure) and a freezing point of -17°C. It is used in the paint and coatings industry as a low VOC (volatile organic compound) solvent and coalescing aid with similar properties to TEXANOL and TXIB.
Dibutyl adipate is a colorless and transparent oily liquid. Boiling point 168℃ (10mmHg), melting point -37.5℃, freezing point -20℃, viscosity 6 centipoise (20℃), refractive index 1.435 (20℃). The product is soluble in ether and ethanol, but insoluble in water. It is mainly used as a plasticizer for vinyl resin, cellulose
Dioctyl Adipate (DOA) is a colorless or light yellow transparent oily liquid with the smell of ether and organic solvents and with a density of 0.925g/ml (20℃), a boiling point of (°C,0.53kPa): 208~218, a freezing point of -67.8℃, and a flash point of 194℃. DOA has efficient plasticization and good
Dimethyl Adipate CAS No 627-93-0 Dimethyl Hexanedioate, is a colorless and transparent liquid with a density of 1.06g/ml (20℃), a boiling point of 109-110℃@ 14 mm, a freezing point of 8℃, and a flash point of 107℃. DMA is widely used as a solvent for high-end coatings, inks and additives,
Adipate esters include dimethyl adipate, dioctyl adipate, dibutyl adipate, diisobutyl adipate, etc.
Common adipate esters are dioctyl adipate, dimethyl adipate, dibutyl adipate and diisobutyl adipate. Dioctyl adipate is a typical excellent cold-resistant plasticizer for polyvinyl chloride. It has high plasticizing efficiency and little discoloration when heated. This ester can give products excellent low-temperature flexibility and light resistance. And it also has a certain degree of water resistance. People use the adipate ester of CAS 6169-06-8 (+) -2-Octanol in cosmetics.
Dioctyl adipate is often compounded with phthalates. And people use them together in cold-resistant agricultural films, cable coatings. In addition, we also use them in artificial leather, boards, outdoor water pipes and frozen food packaging films.
Dioctyl adipate can also be used as a low-temperature plasticizer for a variety of synthetic rubbers. In addition, people also use it as a cold-resistant plasticizer for resins such as nitrocellulose, ethylcellulose, polystyrene, vinyl chloride-butylene acetate copolymer, etc.
Weifang Integratechem Co., Ltd. is a leading, experienced and professional supplier of adipate esters. Now we manufacture and supply a series of adipate esters, mainly used as plasticizers, solvents, adhesives, coatings, inks, organic Synthetic intermediates, etc. We are continuously committed to providing customers with competitive prices and consistent service to meet their needs.
Esters exist widely in nature. Lower esters have an aromatic odor and are present in the flowers and fruits of plants. Fat is the glyceryl ester of higher fatty acids, which is an indispensable substance for life. Wax obtained from animals or plants is also composed mainly of lipids. Tannin is the glucose-ester of gallic acid, the antibiotic erythromycin is the lactone, and the insecticide pyrethrin is the ester of chrysanthemum acid.
According to the chemical structure. Can be divided into: (1) Phthalate esters; (2) Aliphatic dibasic acid esters; (3) Phosphate esters (4) Epoxy compounds; (5) Polymeric plasticizers; ( 6) Benzene polyester; (7) Chlorine-containing plasticizer; (8) Alkyl sulfonate ester; (9) Polyol ester; (10) Other plasticizers.
Adipic acid and corresponding alcohol are formed through esterification reaction and distillation purification under the action of catalyst.
Use a catalyst that has good catalytic activity and can be removed from the system without neutralization and water washing, or a catalyst that forms a homogeneous phase with the ester at the reaction temperature and precipitates in a solid state after lowering the temperature.
The carboxylic acid and alcohol can be heated in the presence of a small number of catalysts (concentrated sulfuric acid, dry hydrogen chloride, strong acid type ion exchange resin) to form esters. This reaction is called esterification. Esterification is a reversible reaction, and when equilibrium is reached, a certain number of reactants and products are present.
The functional group of adipate esters is -COO-, which is formed by dehydration of carboxyl group (-COOH) and hydroxyl group (-OH).
Dioctyl adipate is a typical excellent cold-resistant plasticizer for polyvinyl chloride. It has high plasticizing efficiency and little discoloration when heated. It can give products excellent low-temperature flexibility and light resistance, and has a certain degree of water resistance.
Since adipic acid is a binary carboxylic acid, if the alcohol involved in the reaction is a monol, then one molecule of adipic acid reacts with two molecules of a monol to produce a molecule of adipate esters. After the coefficients corresponding to the chemical reaction are multiplied by their respective molecular weights, the ratio between the three products is the ratio of raw material consumption.
The most cost-effective plasticizers are dibutyl phthalate and dioctyl phthalate.
Dimethyl phthalate
The word “ester” can be preceded by the corresponding carboxylic acid and alcohol names. The word “alcohol” can generally be omitted, that is, “some” acid “some” ester. But the ester of polyols, generally put the “acid behind, called” an alcohol an acid ester.”
Heating and adding catalyst can only accelerate the reaction speed, and has no effect on the composition of the balanced material. In order to increase the yield of esters, excessive carboxylic acids and alcohols are often added, or the resulting water is constantly removed from the reaction mixture. If the boiling point of the ester produced is very low, the ester can also be steamed out. In short, the equilibrium is destroyed to improve the yield of ester. For example, the industrial production of ethyl acetate is to use excessive acetic acid, the generated ethyl acetate and water azeotrope (water 8.6%, ethyl acetate 91.4%, constant boiling point 70.45℃) to steam out, so that the balance is destroyed, and then continue to add acetic acid and ethanol, continue to steam ethyl acetate and water, continuous production.
The hydrolysis of esters in alkali solution is also called saponification reaction, which is because the advanced fatty acid salt obtained by alkaline hydrolysis of grease is the reason of soap.
With extensive experience and expertise, Weifang Integratechem Co., Ltd specializes in supplying high-quality, effective adipate esters. As one of the leading manufacturers and suppliers in China, we are equipped with professional and productive adipate esters factory. Please feel free to buy.
