Stabilizer mixtures for plastics

Details Stabilizer mixtures for plastics Stabilizer mixtures for plastics

1987-10-09

1989-02-21

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, 524153, 25240024, 252404, C08K 552, C08K 515

Patent

active

048065803

ABSTRACT:
Stabilizer mixtures for stabilizing plastics comprising one part by weight of a chroman derivative (I) of the general formula ##STR1## where R= ##STR2## where Z=C.sub.7 -C.sub.30 -alkyl, --CH.sub.2 CH.sub.2 --S--[C.sub.1 -C.sub.30 -alkyl] or ##STR3## and from 5 to 14 parts by weight of an organic phosphite of the general formula (II) ##STR4## where R.sup.1, R.sup.2 and R.sup.3 are identical of different alkyl and/or aryl or of an organic phosphonite of the formula (III) ##STR5## where +is C(CH.sub.3).sub.3, a mixing ratio (a):(b) of from 1:6 to 1:10 being preferred.

REFERENCES:
patent: 4348308 (1982-09-01), Minagawa et al.
patent: 4404304 (1983-09-01), Horner et al.
patent: 4511685 (1985-04-01), Nissen et al.
patent: 4680327 (1987-07-01), Hettche et al.

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