Flame retardant high impact poly paramethylstyrene compositions

Details Flame retardant high impact poly paramethylstyrene compositions Flame retardant high impact poly paramethylstyrene compositions

1982-08-31

1986-03-25

Hoke, Veronica P.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C08K 506

Patent

active

045784167

ABSTRACT:
The present invention provides a non-foamed flame-retardant article of polymeric composition comprising at least 20% by weight of a monomer mixture comprising 0-0.1% by weight o-methylstyrene 0-15% by weight m-methylstryene and at least 85% by weight p-methylstyrene; 0-80% by weight of a different ethylenic unsaturated monomer; and a sufficient amount of flame-retardants wherein the amount of flame-retardants is substantially less than would be needed had the p-methylstryene been replaced with styrene analogs. The flame retardancy may be achieved by the addition of antimony compounds and halide flame retardants. High impact resistance is achieved by the incorporation of a rubber polymer into the polymeric composition.

REFERENCES:
patent: 3134747 (1964-05-01), Amos et al.
patent: 3372141 (1968-03-01), Dickerson et al.
patent: 3441524 (1969-04-01), Burger et al.
patent: 3809729 (1974-05-01), Reinhard
Chemical Week-Feb. 17, 1982, pp. 42-46.

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