Amides of 2,4,6-trialkyl-3-hydroxyphenylalkanoic acids

Details Amides of 2,4,6-trialkyl-3-hydroxyphenylalkanoic acids Amides of 2,4,6-trialkyl-3-hydroxyphenylalkanoic acids

1978-03-16

1980-02-05

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 459NC, C07C10326, C07C10378

Patent

active

041872460

ABSTRACT:
Ester and amides having the formula ##STR1## wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is hydrogen, alkyl, cycloalkyl, alkylene, phenyl, phenyl substituted by alkyl groups, alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene or a polyvalent cyclic or acyclic hydrocarbon radical, R.sup.4 is hydrogen, lower alkyl, cycloalkyl, R.sup.5 is hydrogen, alkyl, phenyl, phenyl substituted by alkyl groups, alkylene, a polyvalent cyclic or acyclic hydrocarbon radical or alkyleneoxyalkylene, A is lower alkylene, m is 1 to 4 and n is 1 to 6.
The compounds are useful as stabilizers of organic materials, especially polyolefins, which deteriorate upon exposure to light and heat.

REFERENCES:
patent: 3022268 (1962-02-01), Armitage et al.
patent: 3247240 (1966-04-01), Meier et al.
patent: 3510508 (1970-05-01), Blachere et al.
patent: 3677965 (1972-07-01), Dexter et al.
patent: 4025487 (1977-05-01), Dexter et al.
patent: 4100191 (1978-07-01), Fischer et al.
patent: 4101550 (1978-07-01), Spivack

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