Mixtures of polyalkylpiperidin-4-yl dicarboxylic acid esters as

Details Mixtures of polyalkylpiperidin-4-yl dicarboxylic acid esters as Mixtures of polyalkylpiperidin-4-yl dicarboxylic acid esters as

1997-05-22

1998-10-06

Kight, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

524102, C07D21136

Patent

active

058178210

ABSTRACT:
A mixture containing two different compounds of the formula (I) ##STR1## wherein n is an integer from 2 to 22 and R is hydrogen, C.sub.1 -C.sub.8 alkyl, --O.multidot., --OH, --NO, --CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.8 acyl or C.sub.7 -C.sub.9 phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl; the weight ratio of the two compounds being 1:20 to 20:1, is useful as stabilizer for organic materials against degradation induced by light, heat or oxidation.

REFERENCES:
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patent: 4419472 (1983-12-01), Berner et al.
patent: 4461898 (1984-07-01), Meier et al.
patent: 5028645 (1991-07-01), Gugumus et al.
patent: 5439959 (1995-08-01), Raspanti

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