Preparation method of self-thixotropic polyurethane curing agent, self-thixotropic polyurethane curing agent and application
By reacting highly crystalline polyester polyols and polyether polyols with isocyanates, the problem of thixotropic agent gelation in polyurethane systems was solved, and a self-thixotropic polyurethane curing agent suitable for coatings, adhesives and sealants was prepared.
CN116535611BActive Publication Date: 2026-06-12SHENZHEN FEIYANG JUNYAN TECH DEV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN FEIYANG JUNYAN TECH DEV
- Filing Date
- 2023-05-10
- Publication Date
- 2026-06-12
Smart Images
Figure CN116535611B_ABST
Abstract
The application relates to the field of isocyanate curing agents, and particularly discloses a preparation method of a self-thixotropic polyurethane curing agent, the self-thixotropic polyurethane curing agent and application. The preparation method of the self-thixotropic polyurethane curing agent is as follows: isocyanate and polyester diol and / or polyether diol with crystallinity are mixed, reaction is carried out at 70 DEG C to 110 DEG C, the self-thixotropic polyurethane curing agent is obtained after the reaction is completed, cooling to room temperature and standing for more than 12 hours. The polyurethane curing agent prepared by the method is white paste, has good self-thixotropy and can be well applied to a polyurethane system.
Need to check novelty before this filing date? Find Prior Art