METHOD FOR PRODUCING DICARBOXYLIC ACID COMPOUND AND/OR DIAMINE COMPOUND USING POLYAMIDE AS STARTING MATERIAL

WIPO Patent Application WO/2023/149514

A1

The present invention relates to a method for producing a dicarboxylic acid compound and/or a diamine compound and optionally a dehydration-condensation product of a dicarboxylic acid compound and a diamine compound (i.e., a dehydration-condensation product of one molecule of the dicarboxylic acid compound and one molecule of the diamine compound, and a dehydration-condensation product of one molecule of one of these compounds and two molecules of the other) using a polyamide as a starting material, the method comprising (i) a first hydrolysis step for hydrolyzing the polyamide in high-temperature water to produce a first hydrolysate and (ii) a second hydrolysis step for subjecting the first hydrolysate to hydrolysis with an enzyme to produce a second hydrolysate, in which the first hydrolysate comprises a water-soluble polyamide capable of being dissolved in water at 20°C and the second hydrolysate comprises a dicarboxylic acid compound and/or a diamine compound and optionally a dehydration-condensation product of a dicarboxylic acid compound and a diamine compound.

ARAMAKI MASAAKI (JP)
IWASE KATSUHIRO (JP)
ISAKA KOJI (JP)
MIYATAKE RYO (JP)
YAKIGAYA KENICHI (JP)
OTANI SHOJI (JP)
YAMADA YUTARO (JP)

PCT/JP2023/003434

August 10, 2023

February 02, 2023

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ASAHI CHEMICAL IND (JP)

C07C51/00; C07C55/14; C07C209/62; C07C211/12; C08G69/26; C12N9/80; C12P1/00; C12P7/44; C12P13/00

JP2000506442A	2000-05-30
JPH0531000A	1993-02-09
JPH05271328A	1993-10-19
JP2004161914A	2004-06-10
JP2019031684A	2019-02-28

SUGIMURA Kenji (JP)

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