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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.
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.
Dicarboxylic acids are used in the preparation of copolymers such as polyamides and polyesters. The most widely used dicarboxylic acid in the industry is adipic acid, which is a precursor in the production of nylon. Other examples of dicarboxylic acids include aspartic acid and glutamic acid, two amino acids in the human body.
Dimethyl adipate is prepared by esterification of adipic acid with methanol. Less conventional routes include the hydroesterification of butadiene and the carbonylation of 1,4-dimethoxy-2-butene. [2] It reacts with concentrated ammonia to give the diamide (CH 2 CH 2 C(O)NH 2) 2.
Preparation. Sodium adipate is prepared by reacting adipic acid with sodium hydroxide: [2] C 6 H 10 O 4 + 2 NaOH → Na 2 C 6 H 8 O 4 + 2 H 2 O. Safety
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.
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 ...
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.