Stabilizer system for non yellowing polymer composition

Details Stabilizer system for non yellowing polymer composition Stabilizer system for non yellowing polymer composition

1995-01-09

1996-02-20

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 91, 524 94, 524101, 524198, 524301, 524302, 524305, 252401, 252406, C08K 53492, C08K 53475, C09K 1516

Patent

active

054929482

ABSTRACT:
A stabilizer system for the suppression of yellowing in styrenic polymers, consisting essentially of a benzotriazole such as 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)benzotriazole, a hydroxybenzocyanurate such as tris-(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate and a condensation product of a N,N'-(2,2,6,6-tetramethylpiperidyl)-alkylenediamine and a 6-amino-2,4-dichloro-1,3,5-s-triazine such as the condensation product of N,N'-(2,2,6,6-tetramethylpiperidyl)hexamethylenediamine and 6-morpholino-2,4-dichloro-1,3,5-s-triazine. Additionally a dialkyl thiodipropionate and a zinc dialkyldithiocarbamate may be included in the stabilizer system.

REFERENCES:
patent: 3531483 (1970-09-01), Gilles
patent: 4331586 (1982-05-01), Hardy
patent: 4464496 (1984-08-01), Nemzek et al.
patent: 5004770 (1991-04-01), Cortolano et al.

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