A polyether polyol containing a carbamate structure and its synthesis method and application
By using the combination of propylene carbonate, polyether amine and zinc-cobalt bimetallic catalyst, the efficient synthesis of polyether polyols containing urethane structure is solved, and the problems of complex and low catalytic efficiency of non-isocyanate polyurethane synthesis methods are improved. The mechanical properties and hydrolysis resistance of polyurethane have expanded the application field of propylene carbonate.
CN115785431BActive Publication Date: 2025-01-07HEFEI POLY ADVANCED MATERIALS TECH CO LTD
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Patent Information
- Application Number
- CN202211472416.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-23
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2042-11-23
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Figure CN115785431B_ABST
Abstract
The present invention relates to the technical field of polyurethane synthesis, and discloses a polyether polyol containing a carbamate structure, a synthesis method thereof and an application thereof, comprising the steps of: adding propylene carbonate, a polyether amine and a combined catalyst into a reactor, mechanically stirring, condensing and refluxing the reaction under an inert gas atmosphere, and removing the propylene carbonate by reduced pressure distillation after the reaction is completed, to obtain the polyether polyol. The present invention selects propylene carbonate and a macromolecular polyether amine as raw materials, and cooperates with a self-designed catalyst to catalyze and realize the improvement of the proportion of primary hydroxyl groups in the product and the improvement of the amine group conversion efficiency of the polyether amine. The catalyst in the method has high selectivity, good efficiency, high conversion rate of the raw materials, and the proportion of primary hydroxyl groups in the product can reach more than 95%, which is very beneficial to the subsequent synthesis of polyurethane.
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