Flexible polyurethane foams

Details Flexible polyurethane foams Flexible polyurethane foams

1996-04-30

1999-05-04

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521918, C08J 936, G08G 1832

Patent

active

059004428

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.

REFERENCES:
patent: 3159700 (1964-12-01), Nakamura
patent: 4454248 (1984-06-01), Pollock et al.
patent: 4478960 (1984-10-01), Buethe et al.
patent: 4833176 (1989-05-01), Wolf et al.
patent: 5063253 (1991-11-01), Gansen
patent: 5084486 (1992-01-01), Patten et al.
patent: 5260347 (1993-11-01), Krueger et al.
patent: 5538779 (1996-07-01), Mispreuve et al.

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