Title:
CROSS-LINKED POLY (ASPARTIC ACID) PRODUCT AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/155523
Kind Code:
A1
Abstract:
Disclosed is a cross-linked poly(aspartic acid) product that can retain the gel shape, water absorbency, water retentivity, and other performance because it does not undergo hydrolysis over time owing to the absence of an ester bond, and a method for producing the cross-linked poly(aspartic acid) product. The cross-linked poly(aspartic acid) product is a reaction product of a polysuccinimide (PSI), a compound (A: a1-A1-a2) containing a first functional group (a1) and a second functional group (a2), and a polyfunctional epoxy compound (B). The cross-linked poly(aspartic acid) product contains a cross-linked structure (PABAP) represented by PSI-a1-A1-a2-B-a2-A1-a1-PSI, the cross-linked structure (PABAP) is partially hydrolyzed, and the second functional group of the compound (A) does not react with the polysuccinimide (PSI) or is less reactive with the polysuccinimide (PSI) than the first functional group.
Inventors:
JIANG XIN (CN)
DOHI TOMOKI (JP)
KAMBARA MANABU (JP)
CUI QING-ZHANG (CN)
GUO JIN (CN)
DENG CHANG-JUN (CN)
DOHI TOMOKI (JP)
KAMBARA MANABU (JP)
CUI QING-ZHANG (CN)
GUO JIN (CN)
DENG CHANG-JUN (CN)
Application Number:
PCT/CN2022/134044
Publication Date:
August 24, 2023
Filing Date:
November 24, 2022
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
JIANG XIN (CN)
JIANG XIN (CN)
International Classes:
C08G73/10; C08G69/48; C08J3/24
Domestic Patent References:
| WO2001048056A1 | 2001-07-05 |
Foreign References:
| JP2002145988A | 2002-05-22 | |||
| CN1198444A | 1998-11-11 | |||
| CN1194274A | 1998-09-30 | |||
| JP2000281782A | 2000-10-10 | |||
| JP2000290371A | 2000-10-17 | |||
| JPH11158266A | 1999-06-15 | |||
| JP2000063511A | 2000-02-29 | |||
| US5834568A | 1998-11-10 |
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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