Stabilization of vinyl resins

Details Stabilization of vinyl resins Stabilization of vinyl resins

1978-10-12

1980-06-24

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23XA, 260 4585A, 260 4595H, 426106, 426129, 426415, C08K 534

Patent

active

042094399

ABSTRACT:
Synthetic resin compositions based on vinyl polymers or copolymers are stabilized against degradation by both heat and light by the incorporation therein of a 1,4-dihydropyridine derivative represented by the general formula: ##STR1## wherein R represents a straight or branched-chain saturated or unsaturated alkyl radical containing from 9 to 22 carbon atoms. The stabilizer can be present in an amount of from 0.01 to 0.5 percent by weight, based on the vinyl resin. The vinyl resin may be, for example, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer or a vinyl chloride-vinylidene chloride copolymer. The stabilized vinyl resins can be used in the manufacture of food packaging materials and containers and also of flooring tiles and recording discs.
Some of the dihydropyridine derivatives are novel compounds.

REFERENCES:
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patent: 4048171 (1977-09-01), Bossert et al.
patent: 4057530 (1977-11-01), Pigerol et al.
patent: 4096112 (1978-06-01), Pigerol et al.

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