Copolymer light stabilizers having at least one 2,2,6,6-tetraalk

Details Copolymer light stabilizers having at least one 2,2,6,6-tetraalk Copolymer light stabilizers having at least one 2,2,6,6-tetraalk

1982-05-20

1985-02-12

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524326, 524336, 524342, 524395, 525203, 5253276, 525375, 526263, 546 19, 546190, C08K 515, C08K 545, C08F 800, C08F22222

Patent

active

044992203

ABSTRACT:
Copolymer light stabilizers are provided having at least one 2,2,6,6-tetraalkyl piperidyl group in the molecule and a molecular weight within the range from about 1000 to about 20,000, that are copolymers of a maleic or fumaric acid ester containing a 2,2,6,6-tetraalkyl piperidyl group in the alcohol group of the formula: ##STR1## wherein ##STR2## R.sub.2 is alkyl or R.sub.1 ; X is ##STR3## R.sub.6 is lower alkyl; R.sub.3 is hydrogen or alkyl;

REFERENCES:
patent: 4308362 (1981-12-01), Niezer et al.
patent: 4311820 (1982-01-01), Nikles

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