Process for the synthesis of epoxidized natural oil-based isocyanate prepolymers for application in polyurethanes
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United States of America Patent
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Jun 4, 2002
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app pub date -
Oct 26, 2000
filing date -
Oct 26, 2000
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Abstract
An isocyanate prepolymer for application in polyurethanes. The prepolymer is synthesized by combining epoxidized natural oils with isocyanates and a catalyst. The prepolymer contains oxazolidone rings that will react with polyols to form polyurethane. The invention provides a method of using a renewable resource in a fast, simple process to produce substantial amounts of isocyanate prepolymer and a minimum of homopolymers.
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