Piperidine compositions for light stabilization

Details Piperidine compositions for light stabilization Piperidine compositions for light stabilization

1981-11-16

1983-12-06

Bond, Robert T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

546188, 546222, 546242, C08K 534, C07D40112, C07D40106

Patent

active

044194722

ABSTRACT:
The invention relates to ester mixtures of polyalkylpiperidine derivatives of the formulae I and II ##STR1## in which R.sub.1 is hydrogen or methyl, R.sub.2 is hydrogen, C.sub.1-12 alkyl, C.sub.3-8 alkenyl, C.sub.7-11 aralkyl, cyanomethyl or C.sub.2-4 acyl, R.sub.3 is C.sub.1-18 alkylene, C.sub.2-18 oxaalkylene, Chd 2-18 thiaalkylene, C.sub.2-18 azaalkylene or C.sub.2-8 alkenylene and R.sub.4 is C.sub.1-4 alkyl. These mixtures are suitable as stabilizers for plastics.

REFERENCES:
patent: 4021432 (1977-05-01), Holt et al.
patent: 4141883 (1979-02-01), Soma et al.
patent: 4238613 (1980-12-01), Rasberger et al.

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