Title:
ISOCYANATE POLYMERIZATION CATALYST, MANUFACTURING METHOD THEREOF, AND METHOD FOR USING THE CATALYST FOR MANUFACTURING POLYISOCYANATE
Document Type and Number:
WIPO Patent Application WO/2018/027999
Kind Code:
A1
Abstract:
An isocyanate polymerization catalyst, manufacturing method thereof, and a method using the catalyst to manufacture a polyisocyanate comprising an isocyanurate group. The catalyst is a di-quaternary ammonium ion of a carboxylic acid salt. The structure of the catalyst comprises a heterocyclic aromatic residue comprising a hydroxy group. The catalyst is highly active. Only a small quantity of the catalyst is required for isocyanate polymerization. A polyisocyanate manufactured using the invention has a color number of 25 Hazen or less, a monomer content of 0.5 wt% or less, a high isocyanurate content, and low viscosity.
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Inventors:
LIU WEI (CN)
SHANG YONGHUA (CN)
SHI BIN (CN)
WANG YUQI (CN)
SUN LIDONG (CN)
LI YUAN (CN)
HUA WEIQI (CN)
SHANG YONGHUA (CN)
SHI BIN (CN)
WANG YUQI (CN)
SUN LIDONG (CN)
LI YUAN (CN)
HUA WEIQI (CN)
Application Number:
PCT/CN2016/095505
Publication Date:
February 15, 2018
Filing Date:
August 16, 2016
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
International Classes:
C07C211/63; B01J31/02; C07D251/34; C07D295/037; C08G18/16; C08G18/18; C08G18/20; C08G18/77; C08G18/78
Foreign References:
US4454317A | 1984-06-12 | |||
US6552154B1 | 2003-04-22 | |||
US6307102B1 | 2001-10-23 | |||
CN102942525A | 2013-02-27 |
Other References:
See also references of EP 3476826A4
Attorney, Agent or Firm:
BOSS&YOUNG PATENT AND TRADEMARK LAW OFFICE (CN)
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