Solid stabilizer composition for organic polymers, and process f

Details Solid stabilizer composition for organic polymers, and process f Solid stabilizer composition for organic polymers, and process f

1988-02-11

1990-09-18

Morgan, Kriellion

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524126, 524147, 524151, 524291, 523223, 25240024, 252404, C08K 549, C08K 553, C08K 5513, C08K 509

Patent

active

049579568

ABSTRACT:
A solid stabilizer composition for organic polymers is formed by a solid, continuous phase and by a dispersed phase in said continuous phase, wherein the continuous phase is constituted by amorphous tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionyloxymethyl]-metha ne and the dispersed phase is constituted by an either amorphous or crystalline organic phosphite, in the form of particles with a particle size of from 10 .mu.m to 2 mm, with the weight ratio of said continuous phase to said dispersed phase being comprised within the range of from 9:1 to 1:9.
The processes for preparing said solid stabilizer composition and its use in the stabilization of organic polymers are disclosed.

REFERENCES:
patent: 3984460 (1976-10-01), Spivack
patent: 4187212 (1980-02-01), Zinke et al.
patent: 4360617 (1982-11-01), Muller et al.

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