Solid stabilizer composition for organic polymers, and...

Details Solid stabilizer composition for organic polymers, and... Solid stabilizer composition for organic polymers, and...

C - Chemistry, Metallurgy

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C08K 5/521 (2006.01) C08K 5/134 (2006.01) C08K 5/524 (2006.01) C08K 5/527 (2006.01) C08K 5/5393 (2006.01)

Patent

CA 1306861

ABSTRACT OF THE DISCLOSURE: 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)-propionyloxymmethyl]- methane 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 um 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.

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