Title:
PREPARATION METHOD FOR ULTRA-HIGH TOUGHNESS BRANCHED POLYAMIDE COPOLYMER, PREPARED POLYAMIDE COPOLYMER AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/023891
Kind Code:
A1
Abstract:
The present invention relates to the technical field of polyamides. Disclosed is a preparation method for an ultra-high toughness branched polyamide copolymer, comprising the following steps: (1) dissolving a straight-chain dibasic acid with a solvent A to obtain a straight-chain dibasic acid solution, dissolving a diamine B with a solvent B to obtain a diamine solution B, and dissolving a diamine C with a solvent C to obtain a diamine solution C; (2) dropwise adding the diamine solution B into the straight-chain dibasic acid solution to obtain an amide salt solution B; dropwise adding the diamine solution C into the straight-chain dibasic acid solution, and collecting a precipitate being an amide salt C; and (3) mixing the amide salt solution B with the amide salt C, adding a catalyst, and performing melt polycondensation. The present invention also provides a product prepared by means of the method above and an application of the product. The beneficial effects of the present invention are as follows: the prepared branched copolymer has excellent mechanical properties, and is suitable for the fields of melt blending and toughening, melt extrusion spinning, blown film and hot melt adhesive, etc.
Inventors:
WANG ZHONGKAI (CN)
LIU WEI (CN)
MA CHUQING (CN)
LIU CHENG (CN)
WANG ZHONG (CN)
LIU WEI (CN)
MA CHUQING (CN)
LIU CHENG (CN)
WANG ZHONG (CN)
Application Number:
PCT/CN2021/114043
Publication Date:
March 02, 2023
Filing Date:
August 23, 2021
Export Citation:
Assignee:
UNIV ANHUI AGRICULTURAL (CN)
International Classes:
C08G69/26; C08L67/04; C08L77/02; C08L77/06; D01F6/90
Domestic Patent References:
| WO2021063835A1 | 2021-04-08 |
Foreign References:
| US3304289A | 1967-02-14 | |||
| US5068311A | 1991-11-26 | |||
| CN110156984A | 2019-08-23 | |||
| CN103649173A | 2014-03-19 |
Attorney, Agent or Firm:
HEFEI CITY, HAO ZHI YUN PATENTAGENCY (CN)
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