Catalytic process for the preparation of phosphazene polymers

Details Catalytic process for the preparation of phosphazene polymers Catalytic process for the preparation of phosphazene polymers

1978-04-10

1979-06-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 304N, 260 326N, 260 336R, 260 37N, 260829, 260DIG24, 423300, 521 89, 521 94, 521180, C08J 906

Patent

active

041574257

ABSTRACT:
A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a compound having the formula M(OR').sub.x where M is an alkali metal or alkaline earth metal, x is equal to the valence of the metal and R' is C.sub.1 to C.sub.10 linear or branched alkyl, C.sub.1 to C.sub.10 substituted linear or branched alkyl, the substituent selected from the group consisting of nitro, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 alkoxy, C.sub.6 to C.sub.10 aryl and C.sub.6 to C.sub.10 aryloxy, or N.sub.3 P.sub.3 Cl.sub.z (OR').sub.6-z wherein R' is as defined above and z equals 0 to 5.

REFERENCES:
patent: 3370020 (1968-02-01), Allcock et al.
patent: 3917802 (1975-11-01), Allcock et al.
patent: 4076658 (1978-02-01), Dieck et al.

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