C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/77
C01B 21/098 (2006.01)
Patent
CA 1229968
-12- METHOD FOR PURIFYING CYCLIC DICHLOROPHOSPHAZENE TRIMER OF CATALYTIC IMPURITIES Abstract Of The Disclosure Cyclic dichlorophosphazene trimer which is substantially pure except for catalytic impurities is purified by treating the trimer in the liquid phase with P205 for 10-30 minutes at a temperature of 120-170°C. and atmospheric pressure, then subjecting the reaction mix to a single further purifica- tion step by sublimation, melt filtration, or distillation. The purified trimer will not polymerize in the absence of added catalyst at 300°C. or below.
493929
Graves Daniel F.
Snyder Dennis L.
Firestone Polymers Llc
Firestone Tire & Rubber Company (the)
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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