Synthetic resin stabilizer comprising a 2,2,6,6-tetramethylpiper

Details Synthetic resin stabilizer comprising a 2,2,6,6-tetramethylpiper Synthetic resin stabilizer comprising a 2,2,6,6-tetramethylpiper

1977-02-18

1978-11-07

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252403, 260 457R, 260 4595C, C08K 534

Patent

active

041245644

ABSTRACT:
Stabilizer compositions are provided whose ingredients interact synergistically to improve the resistance to deterioration on light exposure and heating of synthetic resin compositions. The interacting ingredients are (a) a carboxylic acid ester of a 2,2,6,6-tetramethylpiperidine-4-alcohol having 15 to 75 carbon atoms and 1 to 4 ester groups, and (b) at least one carbonate ester of an ortho-substituted polyhydric phenol having in the molecule one to three benzenoid rings, two to three phenolic hydroxyl groups, and in each benzenoid ring one to two alkyl, cycloalkyl, or aralkyl groups of which at least one is positioned ortho to a phenolic hydroxyl group.
Synthetic resin compositions are provided that are stabilized with thestabilizer compositions disclosed, including olefin polymers, polyamides, acrylic polymers, and vinyl halide polymers.

REFERENCES:
patent: 2999841 (1961-09-01), Csendes
patent: 3223677 (1965-12-01), Matzner
patent: 3244650 (1966-04-01), Hecker et al.
patent: 3510507 (1970-05-01), Bown et al.
patent: 3840494 (1974-10-01), Murayama et al.
patent: 3899464 (1975-08-01), Murayama et al.
patent: 4021432 (1977-05-01), Holt et al.
Polymer Engineering and Science--Jul. 1966, pp. 231-239.
Chemical Abstracts 84 (1976) 5945f.

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