Flame retardant composition for polyurethane comprising bromohyd

Details Flame retardant composition for polyurethane comprising bromohyd Flame retardant composition for polyurethane comprising bromohyd

1978-03-21

1980-03-18

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521108, 528 49, 528 51, 528 85, C08G 1814

Patent

active

041940687

ABSTRACT:
Liquid flame-retardants for polyurethane compositions are disclosed. The liquid flame-retardants contain a mixture of a bromohydrin of pentaerythritol, a polyhydric alcohol, and a sufficient amount of a flame-retardant organo-phosphorus compound to render the mixture a substantially solids-free liquid at 25.degree. C., one atmosphere pressure. Illustrative of these flame-retardants is a solution of 2,2-bis(bromomethyl)-1,3-propanediol, a cyclic phosphonate ester of the formula ##STR1## where x=0 or 1, and a poly(oxypropylene) adduct of glycerol having an average molecular weight of about 300.

REFERENCES:
patent: 3738953 (1973-06-01), Angora et al.
patent: 3773696 (1973-11-01), Papa et al.
patent: 3789091 (1974-01-01), Anderson et al.
patent: 3933693 (1976-01-01), Priest et al.
patent: 4052346 (1977-10-01), Rudner et al.

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