Title:
POLYISOCYANATE COMPOSITION AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/047308
Kind Code:
A1
Abstract:
Disclosed are a polyisocyanate composition and a method for preparing the composition. The composition is formed by polymerizing an aliphatic diisocyanate monomer at least including hexamethylene diisocyanate, and contains an isocyanurate ester group, a ureadiketone group, an oxadiazine triketone group and an iminooxadiazine diketone group, wherein the molar ratio of the oxadiazine triketone group to the isocyanurate ester group is (0.001-0.01) : 1, and the sum of the content of bromine and the content of fluorine in the composition is not more than 80 ppm. The polyisocyanate composition can be stably stored at low temperatures.
Inventors:
LIU WEI (CN)
SHI BIN (CN)
SHANG YONGHUA (CN)
XIN GUANGZHEN (CN)
ZHU FULIN (CN)
XUE YONGYONG (CN)
ZHU ZHICHENG (CN)
WANG DAN (CN)
JIAO QIANKUN (CN)
LI YUAN (CN)
SHI BIN (CN)
SHANG YONGHUA (CN)
XIN GUANGZHEN (CN)
ZHU FULIN (CN)
XUE YONGYONG (CN)
ZHU ZHICHENG (CN)
WANG DAN (CN)
JIAO QIANKUN (CN)
LI YUAN (CN)
Application Number:
PCT/CN2020/104738
Publication Date:
March 18, 2021
Filing Date:
July 27, 2020
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
WANHUA CHEMICAL NINGBO CO LTD (CN)
WANHUA CHEMICAL NINGBO CO LTD (CN)
International Classes:
C08G18/79; C07D251/34; C07D273/04; C08G18/02; C08G18/78
Domestic Patent References:
| WO2015011069A1 | 2015-01-29 |
Foreign References:
| CN110540633A | 2019-12-06 | |||
| CN109651278A | 2019-04-19 | |||
| DE102004060122A1 | 2006-06-14 | |||
| CN1688627A | 2005-10-26 | |||
| CN109749036A | 2019-05-14 | |||
| CN107438634A | 2017-12-05 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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