Flexible polyurethane foams and process for preparing them
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United States of America Patent
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Mar 24, 1992
Grant Date -
N/A
app pub date -
May 17, 1990
filing date -
May 17, 1989
priority date (Note) -
Expired
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Abstract
Flexible polyurethane foams having bulk densities within the range of from 15 to 60 kg/cm.sup.3 and a load bearing capacity, under a compression rate of 40%, higher than 50 N, obtained by the reaction of a modified polyisocyanate with a compound containing activated hydrogen atoms in chain-end position, and wherein agents different from chloro-fluoroalkanes are used as the foaming agent.
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