Antioxidant system for polyolefins

Details Antioxidant system for polyolefins Antioxidant system for polyolefins

1995-02-22

1997-01-14

Morgan, Kriellion S.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524110, 524317, 524386, 524389, 252404, 252407, C08K 505, C08K 510, C08K 515

Patent

active

055940552

ABSTRACT:
A phosph(on)ite free antioxidant system based on an .alpha.-tocopherol formulation and a compound selected from tetrakis[methylene(3,5-di-tert.-4-hydroxyhydrocinnamate]methane or octadecyl 3,5-di-tert.-4-hydroxyhydrocinnamate is disclosed. This system can replace phenolic/phosphite combinations as the primary system, or simply replace the phosphite portion, to achieve certain optimum performance requirements. In either case, the problems associated with phosph(on)ites can be eliminated or minimized.

REFERENCES:
patent: 4532165 (1985-07-01), Hashimoto et al.
patent: 4680327 (1987-07-01), Hettche et al.
patent: 5308549 (1994-05-01), Laermer et al .
Academic Press Dictionary of Science and Technology, Edited by Christopher Morris, Academic Press, pp. 939 and 2142 (1992).

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