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Method for preparing polymer polyol stabilizer using maleic anhydride, and polymer polyol stabilizer prepared thereby
Method for preparing polymer polyol stabilizer using maleic anhydride, and polymer polyol stabilizer prepared thereby
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机译:用马来酸酐制备聚合物多元醇稳定剂的方法和由此制备的聚合物多元醇稳定剂
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摘要
Disclosed herein is a novel stabilizer for preparing a polymer polyol, which is used to prepare polyurethane foam having improved physical properties. The stabilizer is prepared by allowing maleic anhydride to react with a polyether polyol, having an OH functionality of 3-8 and a molecular weight of 3,000-15,000, and then adding ethylene oxide to the reaction solution. Because the molecular weight and functionality of the stabilizer are increased through aging and dimerization, the stabilizer has a high molecular weight of 5,000-30,000, a high OH functionality of 6-10 and a viscosity of 3,000-15,000 cps/25 °C. A polymer polyol derived from the stabilizer has low viscosity compared to those of prior products and contributes to the improvement in the physical properties of the resulting polyurethane foam.
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