Poly(dialkylaminoaryloxyphosphazene) polymers and foams

Details Poly(dialkylaminoaryloxyphosphazene) polymers and foams Poly(dialkylaminoaryloxyphosphazene) polymers and foams

1976-08-16

1977-10-25

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25FP, 260 252R, 260 304N, 260 326N, 260 336R, 260 37N, 260 47R, 260 47P, 260DIG24, C08G 7902

Patent

active

040555232

ABSTRACT:
Poly(aryloxyphosphazene) polymers and foams thereof having di(C.sub.1 -C.sub.10)alkylaminophenoxy groups are described. The polymers consist of the units which occur in a nonregular fashion and are represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are C.sub.1 -C.sub.10 linear or branched alkyl radical. Copolymeric dialkylaminoaryloxy-aryloxyphosphazenes are disclosed represented by units of the general formula: ##STR2## wherein R.sub.1 and R.sub.2 are defined above and R represents hydrogen, halogen, C.sub.1 -C.sub.10 linear or branched alkyl radical, or C.sub.1 -C.sub.4 linear or branched alkoxy radical substituted on any sterically permissible position on the other phenoxy group. The radical NR.sub.1 R.sub.2 is substituted in the meta or para position on the phenoxy radical. The polymers are elastomers, have desirable tensile strengths and may be used to form flexible or semi-rigid films, sheets, and foams. The polymers are extremely fire retardant and produce low smoke loads when heated in an open flame. They readily form salts with mineral acids that are water soluble.

REFERENCES:
patent: 2866773 (1958-12-01), Redfarn
patent: 3313774 (1967-04-01), Rice et al.
patent: 3370020 (1968-02-01), Allcock et al.

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