Flexible polyurethane foams
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United States of America Patent
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May 4, 1999
Issued Date -
N/A
app pub date -
Apr 30, 1996
filing date -
May 12, 1995
priority date (Note) -
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Abstract
Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam and by crushing the rigid foam so obtained. Flexible foams are obtained which do not show a major glass transition temperature between -100.degree. C. and +25.degree. C.
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