Fire retardant compositions

Details Fire retardant compositions Fire retardant compositions

1992-07-13

2000-10-10

Cooney, Jr., John M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521137, 521163, 521907, 524196, 524197, 528 76, 2521822, 252609, C08J 904

Patent

active

061302678

ABSTRACT:
The invention provides a fire retardant composition comprising a dispersion of a solid fire retardant such as melamine, ammonium polyphosphate or guanidine carbonate in a liquid organic polyisocyanate which contains dispersed polymer particles. The preferred content of solid fire retardant is from 10 to 100% by weight and the preferred content of polymer particles is from 2 to 30% by weight. The compositions of the invention are suitable for the preparation of flexible and rigid polyurethane foams.

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patent: 3726835 (1973-04-01), Bertozzi et al.
patent: 4093759 (1978-06-01), Otsuki et al.
patent: 4469653 (1984-09-01), Nissen et al.
patent: 4560708 (1985-12-01), Horn et al.
patent: 4622361 (1986-11-01), Gill et al.
patent: 4716182 (1987-12-01), Hess et al.
patent: 4786704 (1988-11-01), Hughes et al.
patent: 4910231 (1990-03-01), Pham et al.

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