Rigid polyurethane foams
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United States of America Patent
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Jun 11, 2002
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N/A
app pub date -
Oct 17, 1997
filing date -
Nov 4, 1996
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Abstract
Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH.sub.2 or NHR functional group, wherein R is an alkyl, cycloalkyl or aryl group and the use of said polyol blend in the manufacture of rigid polyurethane foams.
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