Polyisocyanate-based prepolymer
The invention relates to a polyisocyanate-based prepolymer, which is a prepolymer prepared by reacting diisocyanate and/or diisocyanate trimer with dihydric alcohol and/or trihydric alcohol. Because the prepolymer of the invention has a molecular weight close to that of the dihydric alcohol or the t...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
22.06.2011
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a polyisocyanate-based prepolymer, which is a prepolymer prepared by reacting diisocyanate and/or diisocyanate trimer with dihydric alcohol and/or trihydric alcohol. Because the prepolymer of the invention has a molecular weight close to that of the dihydric alcohol or the trihydric alcohol, the prepolymer can be foamed to become a foam material without additional crosslinking agents such as diamine, polyamine, or a composition of the above, or the prepolymer can be crosslinked directly to become an unfoaming product such as a thin film. |
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Bibliography: | Application Number: CN20091261048 |