CURABLE COMPOSITIONS BASED ON POLYURETIDIONES, POLYTHIOLS AND PHOTOACTIVABLE BASES AND GENERATION OF ISOCYANATES FROM URETIDIONES
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United States of America Patent
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Oct 1, 2015
app pub date -
Jun 16, 2015
filing date -
Apr 11, 2008
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Abstract
Curable compositions based on polyuretidiones, polythiols and photoactivable bases are disclosed. Also a process for generating isocyanate groups by exposing uretidiones to radiation in the range of 100-315 nm is disclosed. The process can be used in a dual curing system for curing compositions that comprise groups that under go photoinduced polymerizations and active hydrogen groups that react with the generated isocyanates.
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