High molecular weight thermoplastic polyurethanes made from polyols having high secondary hydroxyl content
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United States of America Patent
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May 11, 2004
Grant Date -
Oct 24, 2002
app pub date -
Feb 12, 2001
filing date -
Feb 12, 2001
priority date (Note) -
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Abstract
Thermoplastic polyurethane compositions are prepared from polyols having high secondary hydroxyl content, diisocyanates, chain extenders and catalysts. The resulting polyurethanes have high molecular weight and can be prepared by a one-shot process wherein the reactants and any additional desired components are brought together and reacted simultaneously or substantially simultaneously.
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