Soft, flexible polyurethane foam

Details Soft, flexible polyurethane foam Soft, flexible polyurethane foam

1993-07-06

1994-01-11

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521155, 521157, 521170, 521189, C08J 912, C08J 914

Patent

active

052781976

ABSTRACT:
A soft, flexible foam characterized in having (i) a hardness, IFD 25% value, of at most 29 lbs/50 in.sup.2, as determined in accordance with Test B.sub.1 of ASTM D 3574 and (ii) a density of about 0.9 to 3.0. pounds per cubic foot is disclosed. Accordingly, the foam is prepared by reacting an organic polyisocyanate with a polyol in the presence of a catalyst and water and a compound conforming to ##STR1## where A is selected from among H, COOH, NH.sub.2, and OH, M is a counter ion, and

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patent: 4056564 (1977-11-01), Wolf et al.
patent: 4569952 (1986-02-01), Radovich et al.
patent: 4876292 (1989-10-01), Milliren
patent: 4950694 (1990-08-01), Hager
patent: 4970243 (1990-11-01), Jacobs et al.

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