Flame-retarding composition for polymers, preparation process an

Details Flame-retarding composition for polymers, preparation process an Flame-retarding composition for polymers, preparation process an

1998-07-02

2000-09-05

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

252606, 252609, 544195, 544410, C08K 534, C09K 2100, C07D25100

Patent

active

061144215

ABSTRACT:
Flame-retarding composition for polymers, copolymers and mixed polymers comprising piperazine diacid pyrophosphate, piperazine acid phosphate, melamine acid phosphate, melamine and possibly though not necessarily, an alkaline phosphate. Process for the preparation of said flame-retarding composition, consisting in reacting a mixture comprising phosphoric anhydride, piperazine and melamine with water in controlled conditions, either with mass reaction or suspension reaction with a suitable solvent/dispersing agent.

REFERENCES:
patent: 3635970 (1972-01-01), Fessler et al.
patent: 3810850 (1974-05-01), Rowton
patent: 4599375 (1986-07-01), Berte et al.
patent: 5225464 (1993-07-01), Hill

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