Synthetic resin stabilizer comprising an organic phosphite and a

Details Synthetic resin stabilizer comprising an organic phosphite and a Synthetic resin stabilizer comprising an organic phosphite and a

1976-10-06

1978-08-15

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252404, 260 457R, 260 4595D, 260 488R, 260 4595R, 260860, 260 4585S, C08K 552

Patent

active

041071360

ABSTRACT:
Stabilizer compositions are provided whose ingredients interact synergistically to improve the resistance to deterioration on heating of a variety of synthetic resin compositions. The interacting ingredients are (a) an organic phosphite having linked to phosphorus through oxygen at least two alkyl groups having from 6 to 20 carbon atoms and at least one organic group selected from polycyclic polyhydric phenol groups and pentaerythrityl 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 the stabilizer compositions disclosed, including olefin polymers, polyamides, acrylic polymers, and vinyl halide polymers.

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