CROSS-LINKED POLY (ASPARTIC ACID ) PRODUCT AND METHOD FOR PRODUCING THE SAME

Title:

CROSS-LINKED POLY (ASPARTIC ACID ) PRODUCT AND METHOD FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2023/155060

Kind Code:

A1

Abstract:

It is an object of the present invention to provide 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 according to an embodiment of the present invention 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.

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Inventors:

JIANG XIN (CN)
DOHI TOMOKI (JP)
KAMBARA MANABU (JP)
CUI QING-ZHANG (CN)
GUO JIN (CN)
DENG CHANG-JUN (CN)

Application Number:

PCT/CN2022/076421

Publication Date:

August 24, 2023

Filing Date:

February 16, 2022

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)
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
US5834568A	1998-11-10
JP2000063511A	2000-02-29

Attorney, Agent or Firm:

LINDA LIU & PARTNERS (CN)

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