Title:
半芳香族ポリアミドの製造方法及び半芳香族ポリアミド
Document Type and Number:
Japanese Patent JP6591670
Kind Code:
B2
Abstract:
The present disclosure provides a production method of a semi-aromatic polyamide, and a semi-aromatic polyamide. Said production method of a semi-aromatic polyamide includes: step 1 of subjecting an initial charge of a diamine and a binary acid in an amine/acid molar ratio of less than 1.0 to form a slurry together with water and a catalyst, and subjecting the slurry to heating and dissolution to form a saline solution; step 2 of dehydrating said saline solution after detecting the composition thereof, detecting the content of diamine in a steam condensate from a dehydration unit, adjusting the amine/acid molar ratio to be larger than 1.0 by a molten diamine and a monoacid as a molecular weight regulator, and performing pre-polymerization; and step 3 of subjecting a pre-polymerization solution to post-polycondensation after vacuum flashing. The semi-aromatic polyamide of the present disclosure has a low gel content, excellent performance and extensive scope of application.
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Inventors:
Chen Zhi
Youni Red
Zhang Koto
Kure lol lol
Kobun Go
Den Pile Army
Takayo Zhou
Wang Chang Sawa
Youni Red
Zhang Koto
Kure lol lol
Kobun Go
Den Pile Army
Takayo Zhou
Wang Chang Sawa
Application Number:
JP2018521282A
Publication Date:
October 16, 2019
Filing Date:
June 29, 2017
Export Citation:
Assignee:
ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.
Zhejiang University
Zhejiang University
International Classes:
C08G69/28
Foreign References:
| US4742110 |
Attorney, Agent or Firm:
Fukami patent office
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