Thermoplastic, thermosetting grafted polyurethane, pure or blended, and thermoset polyurethane obtained after crosslinking
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United States of America Patent
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app pub date -
Apr 20, 2004
filing date -
Oct 26, 2001
priority date (Note) -
Abandoned
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Abstract
Thermoplastic polyurethane, either alone or blended with other polymers, are grafted with diisocyanate trimers or blocked isocyanates. The thermoplastic polyurethane is crosslinked at a temperature above 85.degree. C. to make the composition thermosetting. The crosslinked compositions have low compression set and are insoluble in THF.
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