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Title:
HYDROPHILIC DIISOCYANATE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/185335
Kind Code:
A1
Abstract:
The present invention relates to the field of polyurethanes, and provides a hydrophilic diisocyanate, comprising at least one structural unit as represented by the general formula (I). In the formula, SO3M is a sulfonate group, M is a K ion or a Na ion or an ammonium ion, and n is 1-6. The hydrophilic diisocyanate is generated by reaction of at least one hydrophobic chain extender with a diisocyanate. The sulfonate group in the hydrophilic diisocyanate structure in the present invention is a salt formed from a strong acid and a strong base and has good hydrophilicity; the isocyanate groups at both ends retain the properties of the original diisocyanate, and thus having the chemical reaction characteristics of the diisocyanate; the use of the hydrophilic diisocyanate in the present invention to prepare waterborne polyurethanes changes existing technological methods, and greatly simplify operations.

Inventors:
LIU XIAOHONG (CN)
ZHOU GUOHAO (CN)
LIANG JIEHONG (CN)
HE SHAOQUN (CN)
ZHOU JIANMING (CN)
Application Number:
PCT/CN2021/081648
Publication Date:
September 23, 2021
Filing Date:
March 18, 2021
Export Citation:
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Assignee:
FOSHAN JINGXIN HUIMING TECH CO LTD (CN)
International Classes:
C07C309/12; C07C309/15; C08G18/77; C08L75/04; C09J175/04
Foreign References:
CN111423343A2020-07-17
CN107082860A2017-08-22
JPH02167328A1990-06-27
EP2361938A12011-08-31
CN109897160A2019-06-18
US20090192283A12009-07-30
CN107793544A2018-03-13
CN108659191A2018-10-16
JP2009040864A2009-02-26
CN108586720A2018-09-28
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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