IMINE-TYPE QUATERNARY AMMONIUM SALT CATALYST, PREPARATION METHOD THEREFOR AND USE THEREOF FOR PREPARATION OF POLYISOCYANATE COMPOSITION

WIPO Patent Application WO/2019/104888

A1

Disclosed is an imine-type quaternary ammonium salt catalyst, wherein the catalyst has a general structure formula shown by formula I below; in the formula, R1 and R2, respectively, are independently selected from C1-C20 linear alkyl or branched C3-C20 alkyl, and C1-C20 hydroxylalkyl, C3-C8 cycloalkyl, and arylated alkyl; R3 is linear or branched alkyl, cycloalkyl or aryl; and R4 is hydrogen, aryl, linear C1-C15 alkyl or branched C3-C15 alkyl. Also disclosed are a method for preparing the catalyst and a polyisocyanate composition prepared therefrom. The catalyst, by introducing an imine structure, on the basis of ensuring high catalytic activity thereof, is allowed to have properties of high temperature decomposition and inactivation, and when applied to the synthesis of polyisocyanate, can effectively prevent the risk of explosive polymerization caused by an uncontrolled reaction.

WANG NUANCHENG (CN)
SHANG YONGHUA (CN)
WANG YUQI (CN)
SHI BIN (CN)
ZHU ZHICHENG (CN)
LI HEFU (CN)
LI YUAN (CN)
HUA WEIQI (CN)

PCT/CN2018/076687

June 06, 2019

February 13, 2018

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WANHUA CHEMICAL GROUP CO LTD (CN)

B01J31/02; C07C249/02; C07C251/30; C07C263/16; C07C265/14

WO2017029266A1

2017-02-23

CN101927184A	2010-12-29
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US0673062A	1901-04-30
US6800714B2	2004-10-05
US7001973B2	2006-02-21
US5489663A	1996-02-06
US5124427A	1992-06-23
CN101927184A	2010-12-29
CN200710180169A	2002-05-07

See also references of EP 3718630A4

BOSS & YOUNG PATENT AND TRADEMARK LAW OFFICE (CN)

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