Title:
METHOD FOR PRODUCING COPOLYMERIZED POLYAMIDE
Document Type and Number:
WIPO Patent Application WO/2021/049266
Kind Code:
A1
Abstract:
The present invention relates to a method for producing a copolymerized polyamide, said method enabling the efficient production of a copolymerized polyamide of good quality, while comprising the first step and the second step described below. First step: a step for preparing a mixed liquid by mixing (A) ε-caprolactam and (B) adipic acid at a temperature of not less than 69°C but less than 115°C, wherein adipic acid (B) in a solid state is added to ε-caprolactam (A) in a liquid state so as to mix the ε-caprolactam (A) and the adipic acid (B) with each other, and from 1 mole to 20 moles of the ε-caprolactam (A) is used relative to 1 mole of the adipic acid (B)
Second step: a step for obtaining a copolymerized polyamide by mixing and subsequently reacting the mixed liquid obtained in the first step with (C) hexamethylenediamine
Inventors:
MIYAZAKI TAKAMASA (JP)
DOI TAKASHI (JP)
KURACHI KOICHIRO (JP)
FUJII HIROYUKI (JP)
ABE MASANORI (JP)
TSUJIMOTO KUNITERU (JP)
YAMAGUCHI HISAYA (JP)
MAKIHARA YASUHISA (JP)
HAYASHI TESSU (JP)
DOI TAKASHI (JP)
KURACHI KOICHIRO (JP)
FUJII HIROYUKI (JP)
ABE MASANORI (JP)
TSUJIMOTO KUNITERU (JP)
YAMAGUCHI HISAYA (JP)
MAKIHARA YASUHISA (JP)
HAYASHI TESSU (JP)
Application Number:
PCT/JP2020/031240
Publication Date:
March 18, 2021
Filing Date:
August 19, 2020
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
C08G69/16; C08G69/28; C08G69/36
Domestic Patent References:
| WO2011081099A1 | 2011-07-07 |
Foreign References:
| JPH09124542A | 1997-05-13 | |||
| JPH10509760A | 1998-09-22 | |||
| JP2010530458A | 2010-09-09 | |||
| JP2014524928A | 2014-09-25 | |||
| JP2004519531A | 2004-07-02 | |||
| JP2002516366A | 2002-06-04 | |||
| JP2010053359A | 2010-03-11 | |||
| JP2010116575A | 2010-05-27 | |||
| JPH03111424A | 1991-05-13 | |||
| JPH09124542A | 1997-05-13 |
Other References:
"New polymer producing process", KOGYO CHOSAKAI PUBLISHING CO.
Attorney, Agent or Firm:
TSUKUNI & ASSOCIATES et al. (JP)
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