Catalytic compositions
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United States of America Patent
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Sep 21, 2010
Grant Date -
Jul 16, 2009
app pub date -
Mar 26, 2009
filing date -
Jun 1, 2004
priority date (Note) -
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Abstract
A polyurethane obtained by reaction between (i) at least one homopolymer obtained by homopolymerization of .epsilon.-caprolactone, and (ii) at least one dissocyanate, wherein said reaction between (i) and (ii) and said homopolymerization are performed in presence of a catalyst selected from (a) a catalyst containing bismuth ethylhexanoate and ethylhexanoic acid, (b) a catalyst containing bismuth ethylhexanoate and bismuth neodecanoate, and (c) a catalyst containing zinc neodecanoate and zinc oxide.
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