Carbamylation compositions of monovalent metal containing catalysts, polyols and urea compounds and carbamylation processes using the same
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United States of America Patent
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Oct 29, 2019
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Mar 24, 2016
app pub date -
Sep 16, 2015
filing date -
Sep 22, 2014
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Abstract
The present invention provides carbamylation compositions of one or more urea compounds, one or more polyols and a monovalent transition metal or alkali metal catalyst (i), such as lithium ethylhexanoate, which compositions are substantially isocyanate free, enjoy reduced toxicity in comparison to tin catalysts, and which are useful in making polycarbamates which themselves provide compositions for making crosslinked polyurethanes.
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