N -(substituted)-.alpha.-(3,5-dialkyl-4-hydroxyphenyl)-.alpha.,.

Details N -(substituted)-.alpha.-(3,5-dialkyl-4-hydroxyphenyl)-.alpha.,. N -(substituted)-.alpha.-(3,5-dialkyl-4-hydroxyphenyl)-.alpha.,.

1988-01-25

1988-10-25

Raymond, Richard L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

44 63, 252 515A, 544231, 544382, 544384, 544386, 544389, 544400, 544397, 544393, C07D24104, C08K 534

Patent

active

047804955

ABSTRACT:
N-(substituted)-1-(piperazinealkyl)-.alpha.-(3,5-dialkyl-4-hydroxyphenyl)-. alpha.,.alpha.-disubstited acetamides, are novel compounds prepared by a novel modification of the ketoform process. The compounds are useful as stabilizers for organic materials subject to degradation in an environment in which the materials are exposed to heat, oxidation and light, particularly ultraviolet light. The compounds are especially useful in combination with known secondary stabilizers.

REFERENCES:
patent: 4292409 (1981-09-01), Lai et al.
patent: 4547538 (1985-10-01), Lai et al.
patent: 4650870 (1987-03-01), Conetta et al.
Testa, et al., "Chemical Abstracts", vol. 65, 1966, col. 20083g.

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