Title:
METHOD FOR PREPARING POLYURETHANE OPTICAL RESIN AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/107543
Kind Code:
A1
Abstract:
Provided are a method for preparing a polyurethane optical resin and a use thereof. The preparation method comprises: subjecting a raw material composition containing isocyanate and a polymercaptan compound to a polymerization reaction so as to obtain a polyurethane optical resin, wherein the content of a dimer structure polymer of the isocyanate present in the isocyanate used in the raw material composition is controlled to be ≤ 4 wt%, preferably ≤ 3 wt%, further preferably ≤ 2.5wt%, and more preferably ≤ 1.6 wt%. The method for preparing a polyurethane optical resin provided in the present invention can successfully manufacture polyurethane optical resin, and can effectively reduce the rate at which optical deformation of an article occurs.
Inventors:
LI JIANFENG (CN)
SHANG YONGHUA (CN)
WU QIAN (CN)
ZHU FULIN (CN)
CHEN HAO (CN)
WANG PENG (CN)
WANG QIAO (CN)
HUA WEIQI (CN)
LI YUAN (CN)
SHANG YONGHUA (CN)
WU QIAN (CN)
ZHU FULIN (CN)
CHEN HAO (CN)
WANG PENG (CN)
WANG QIAO (CN)
HUA WEIQI (CN)
LI YUAN (CN)
Application Number:
PCT/CN2018/121304
Publication Date:
June 04, 2020
Filing Date:
December 14, 2018
Export Citation:
Assignee:
WANHUA CHEMICAL GROUP CO LTD (CN)
WANHUA CHEMICAL NINGBO CO LTD (CN)
SHANGHAI WANHUA KEJU CHEMICAL TECH DEVELOPMENT CO LTD (CN)
WANHUA CHEMICAL NINGBO CO LTD (CN)
SHANGHAI WANHUA KEJU CHEMICAL TECH DEVELOPMENT CO LTD (CN)
International Classes:
C08G18/79; C08G18/08; C08G18/38; C08G18/72; G02B1/04
Foreign References:
| CN103890616A | 2014-06-25 | |||
| CN1608090A | 2005-04-20 | |||
| CN105960425A | 2016-09-21 |
Attorney, Agent or Firm:
BOSS&YOUNG PATENT AND TRADEMARK LAW OFFICE (CN)
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