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Adipic acid or hexanedioic acid is the organic compound with the formula (CH 2) 4 (COOH) 2.From an industrial perspective, it is the most important dicarboxylic acid: about 2.5 billion kilograms of this white crystalline powder are produced annually, mainly as a precursor for the production of nylon.
PBAT (short for polybutylene adipate terephthalate) is a biodegradable random copolymer, specifically a copolyester of adipic acid, 1,4-butanediol and terephthalic acid.PBAT is produced by many different manufacturers and may be known by the brand names ecoflex, Wango, Ecoworld, Eastar Bio, and Origo-Bi.
1,6-Hexanediol is industrially made by the hydrogenation of adipic acid or its esters. [ 3 ] [ 5 ] Laboratory preparation could be achieved by reduction of adipates with lithium aluminium hydride , although this method is impractical on a commercial scale.
Nylon 66 is synthesized by polycondensation of hexamethylenediamine and adipic acid. Equivalent amounts of hexamethylenediamine and adipic acid are combined in water. In the original implementation, the resulting ammonium/carboxylate salt was isolated and then heated either in batches or continuously to induce polycondensation.
This process forms cyclohexanol as a by-product, and this mixture, called "KA Oil" for ketone-alcohol oil, is the main feedstock for the production of adipic acid. The oxidation involves radicals and the hydroperoxide C 6 H 11 O 2 H as an intermediate. In some cases, purified cyclohexanol, obtained by hydration of cyclohexene, is the precursor.
Dibasic ester or DBE is an ester of a dicarboxylic acid.Depending on the application, the alcohol may be methanol or higher molecular weight monoalcohols. Mixtures of different methyl dibasic esters are commercially produced from short-chain acids such as adipic acid, glutaric acid, and succinic acid. [1]
The demand for adipic acid is expected to be driven by an increase in the need for electronic goods in the near future. Adipic Acid Industry Overview. The global adipic acid market is observed by its widespread application in the production of nylon 6,6, polyurethane and various other industrial products. It is used with better mechanical ...
The great majority of the diamine is consumed by the production of nylon 66 via condensation with adipic acid. Otherwise hexamethylene diisocyanate (HDI) is generated from this diamine by phosgenation as a monomer feedstock in the production of polyurethane. [9] [10] The diamine also serves as a cross-linking agent in epoxy resins. [11] [12] [13]