发明授权
US09328196B2 Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups 有权
制备具有伯羟基端基的聚亚油酸酯多元醇的方法

Process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups
摘要:
The present invention relates to a process for the preparation of polyricinoleic acid ester polyols having primary hydroxyl end groups. It furthermore relates to polyricinoleic acid ester polyols obtainable according to the invention and polyurethane polymers prepared using these polyols. The process comprises the steps: a) polycondensation of ricinoleic acid until a hydroxyl number of >0 mg of KOH/g to 80% by weight to
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