Intumescent flexible polyurethane foam having incorporated into

Details Intumescent flexible polyurethane foam having incorporated into Intumescent flexible polyurethane foam having incorporated into

1979-09-19

1981-06-23

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521106, 521107, 521132, 521158, C08G 1814

Patent

active

042751691

ABSTRACT:
Flexible polyurethane foam having reduced tendency to form burning embers and which produces a char when it is ignited and burned is provided by incorporating into the reaction mixture before foaming an aldehyde or an aldehyde generator.
In a preferred embodiment, flexible polyurethane foam of increased flame retardance is provided by also incorporating a flame retardant into the reaction mixture before foaming.

REFERENCES:
patent: 2912435 (1959-11-01), Scholz
patent: 3080256 (1963-03-01), Bundy
patent: 3179626 (1965-04-01), Beitchman
patent: 3451953 (1969-06-01), Sambeth et al.
patent: 3681273 (1972-08-01), Kelly
patent: 3689440 (1972-09-01), Glaesmann
patent: 3803063 (1974-04-01), Krentz
patent: 3808159 (1974-04-01), Matalon
patent: 4139501 (1979-02-01), Rudner et al.
patent: 4160075 (1979-07-01), Golser

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