Fire retardant copolymer of triallyl phosphate and a bis (hydroc

Details Fire retardant copolymer of triallyl phosphate and a bis (hydroc Fire retardant copolymer of triallyl phosphate and a bis (hydroc

1976-12-06

1978-12-12

Ivy, C. Warren

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

521137, 526275, C08F 3620, C08F 3622, C08F23620

Patent

active

041297105

ABSTRACT:
A fire retardant additive for a polyurethane foam comprising a copolymer of:
(1) an allyl group containing compound having the formula (CH.sub.2 .dbd.CHCH.sub.2 O).sub.2 P(O)A, where A is either OR or R, R being a vinyl group, an allyl group, a C.sub.1 -C.sub.10 alkyl group or an aryl group;
(2) at least one bis(hydrocarbyl)vinylphosphonate having the structure: ##STR1## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl, C.sub.1 -C.sub.18 alkyl, and ##STR2## wherein R and R' are hydrocarbyl and substituted hydrocarbyl groups which can be the same, different or conjoint; and
(3) at least one optional third comonomer selected from the group consisting of the vinyl and vinylidene halides, the alpha olefins, vinyl esters of carboxylic acids, C.sub.1 -C.sub.20 alkyl esters of acrylic and methacrylic acid, ethylenically unsaturated dicarboxylic acids, the corresponding anhydrides thereof and the C.sub.1 -C.sub.20 mono and dialkyl esters thereof, amides of ethylenically unsaturated carboxylic acids and the N-methylol and diacetone derivatives thereof, vinyl aryl compounds, C.sub.1 -C.sub.20 alkyl vinyl ethers, aliphatic dienes and glycidyl esters of acrylic and methacrylic acid.
When these copolymers are added to a polyurethane foam formulation at about 20-30 parts per hundred based upon the weight of polyol, a flame retardant polyurethane foam having good physical properties results therefrom.

REFERENCES:
patent: 3208943 (1965-09-01), Kirby
patent: 3243417 (1966-03-01), Kirby
patent: 3726839 (1973-04-01), Jin
patent: 3842048 (1974-10-01), Jin

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