Patent ID: 6525158
Filing Date: 2003-02-25
Classification: C08J,C08K,C08L,Y02W

Abstract:
A stabilizer mixture, suitable for the stabilization of a mixture of recycled plastics obtained from domestic, commercial and industrial waste or from recycled material collections, which mixture of plastics is polyolefin with minor amounts of polystyrene, polyester and poly(vinyl chloride), which comprises per 100 parts (by weight)(A) as component a) 5-50 parts of the pentaerythrityl ester of &bgr;-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, as component b) 5-50 parts of tris-(2,4-di-tert-butylphenyl)phosphite and as component c) 5-90 parts of calcium oxide; (B) as component a) 5-50 parts of the octadecyl ester of &bgr;-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, as component b) 5-50 parts of tris-(2,4-di-tert-butylphenyl)phosphite and as component c) 5-90 parts of calcium oxide; (C) as component a) 5-50 parts of 2,2â€²-ethyliden-bis-(4,6-di-tert-butylphenol), as component b) 5-50 parts of tris-(2,4-di-tert-butylphenyl)phosphite and as component c) 5-90 parts of calcium oxide; (D) as component a) 10-30 parts of the octadecyl ester of &bgr;-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, as component b) 10-30 parts of tris-(2,4-di-tert-butylphenyl)phosphite and as component c) 30-70 parts of calcium oxide; or (E) as component a) 5-30 parts of the octadecyl ester of &bgr;-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, as component b) 5-30 parts of tris-(2,4-di-tert-butylphenyl)phosphite, as component c) 5-40 parts of calcium oxide, as well as 10-50 parts of calcium stearate.