Flexible polyurethane foam having a low flame spread index

Details Flexible polyurethane foam having a low flame spread index Flexible polyurethane foam having a low flame spread index

1979-08-14

1980-11-04

Cockeram, H. S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428310, 428311, 521 51, 521131, 521906, B32B 520, C08G 1814, B32B 2740

Patent

active

042320852

ABSTRACT:
A flexible polyurethane foam having a low flame spread index is produced by combining polyol (preponderantly diol and/or triol) with polyisocyanate (preponderantly diisocyanate) in the presence of a foaming catalyst and a blowing agent. By combining at least 75% by weight of pentabromoethyl benzene, based upon the weight of the polyol, a flame spread index less than 150 can be achieved for the resulting foam in the ASTM test E-162-76. Significantly, polyurethane foams having a flame spread index less than 25 have been produced with this invention.

REFERENCES:
patent: 3259593 (1966-07-01), Eichhorn
patent: 3574164 (1971-04-01), Cyba
patent: 3705127 (1972-12-01), Cyba
patent: 3716516 (1973-02-01), Dombrow
patent: 4147678 (1979-04-01), Mao et al.
Schmidt, Trans. J. Plastics Inst. Dec. 1965, pp. 247-255.

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