Polyhydroxyl-compositions derived from castor oil with enhanced reactivity suitable for polyurethane-synthesis
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United States of America Patent
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May 24, 2005
Grant Date -
Mar 21, 2002
app pub date -
Jul 30, 2001
filing date -
Aug 1, 2000
priority date (Note) -
Expired
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Abstract
A reactive polyester polyol is described that is obtainable by half ester formation starting from at least one dicarboxylic anhydride and at least one hydroxyl group carrying, saturated or unsaturated fatty acid and/or a respective ester, in particular castor oil and/or ricinoleic acid, as well as final esterification by at least one polyol.
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