Polyurethane foam-filled foams and method of producing same

Details Polyurethane foam-filled foams and method of producing same Polyurethane foam-filled foams and method of producing same

1983-05-23

1984-03-20

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 99, 521107, 521114, 521122, 521130, 521123, 521137, C08G 1814

Patent

active

044382219

ABSTRACT:
Polyurethane foam products comprising a foam filled with a foam and a large amount of solid material inert to the foam products are described. The foams are prepared by foaming a polyurethane foam-forming diisocyanate and polyol around pre-formed polyurethane foam chips having incorporated therein or therewith solid materials inert to the foam. The inert material can be a fire- or combustion-retardant material; a material such as graphite or the like to render the foam conductive; or a filler material to impart various other characteristics. The polyurethane foam-filled foams can be tailored to have excellent physical characteristics and are particularly suitable for furniture upholstery, cushioning applications including in mattresses, and where special properties are required.

REFERENCES:
patent: 3717597 (1973-02-01), Hesskamp et al.
patent: 3897372 (1975-07-01), Kehr et al.
patent: 4054706 (1977-10-01), Shapiro
patent: 4385131 (1983-05-01), Fracalossi et al.

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