Method of producing flexible reticulated polyether polyurethane

Details Method of producing flexible reticulated polyether polyurethane Method of producing flexible reticulated polyether polyurethane

1979-05-15

1981-03-31

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521127, 521128, 521914, C08G 1814, C08G 1832, C08G 1848

Patent

active

042594529

ABSTRACT:
A method of producing flexible polyether polyurethane foams, which have a substantially skeletal reticulated structure, is disclosed. When the flexible foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent by one-shot process, a catalyst and other additives, a mixture of (a) poly(oxyethylene-oxypropylene)polyether polyol containing 51 to 98% by weight of ethylene oxide component and (b) poly(oxyethylene-oxypropylene)polyether polyol containing not less than 51% by weight of propylene oxide component is used as the polyhydroxyl compound.

REFERENCES:
patent: 3717597 (1973-02-01), Hesskamp et al.
patent: 3799898 (1974-03-01), Lamplugh et al.
patent: 3865762 (1975-02-01), Repiquet et al.
patent: 3873476 (1975-03-01), Jabs et al.
patent: 3887505 (1975-06-01), Demon et al.
patent: 4144386 (1979-03-01), Consoli et al.
patent: 4167612 (1979-09-01), Tucker et al.

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