NOVEL COPOLYESTER HOT-MELT ADHESIVE AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2017/097157

A1

Disclosed are novel copolyester hot-melt adhesive and a preparation method therefor. The preparation method is mainly characterized by: selecting raw materials according to a preset proportion, the raw materials comprising bisphenol A, cis-butenedioic acid, terephthalic acid, other binary acids, 1,4-butanediol, other dihydric alcohols, a catalyst, and a stabilizing agent; firstly, generating a prepolymer under negative pressure in a low-temperature section, then completing an esterification process under normal pressure in the low-temperature section, and completing the step of polycondensation under negative pressure in a high-temperature section; and finally, preparing a novel copolyester hot-melt adhesive product. On the basis of maintaining the comprehensive performance of the existing conventional copolyester hot-melt adhesive product, the dry cleaning resistance of the copolyester hot-melt adhesive product prepared by the present invention is greatly improved, the washing resistance of the copolyester hot-melt adhesive product is as good as that of polyamide hot-melt adhesive, but the total cost of the copolyester hot-melt adhesive product is lower than that of the conventional polyamide hot-melt adhesive.

LEI HEJI (CN)
LI ZHELONG (CN)

PCT/CN2016/107883

June 15, 2017

November 30, 2016

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SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD (CN)
KUNSHAN TIANYANG HOT MELT ADHESIVE CO LTD (CN)

C08G63/78; C08G63/52; C09J167/06

CN105348497A	2016-02-24
CN101463240A	2009-06-24
CN102102003A	2011-06-22
CN101735758A	2010-06-16
JPH10237412A	1998-09-08

SHANGHAI SAVVY INTELLECTUAL PROPERTY AGENCY (CN)

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