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US 4,305,868 AGranted
Phenolic esteramide antioxidants
AssigneeUniroyal, Inc.
InventorsEdward L. Wheeler, Elmar H. Jancis, Richard A. Gencarelli, Franklin H. Barrows
Life of this patent
Estimating the term…
Abstract
Novel phenolically substituted esterbisamides as antioxidants useful for the protection of organic materials such as synthetic and natural rubbers, plastics and petroleum products against oxidative degradation.
Claims5
A phenolic esteramide selected from the group consisting of:
- ##STR3## wherein A is C.sub.2 to C.sub.12 alkylene or C.sub.2 to C.sub.5 alkylene substituted with one or two groups having the formula (aa):
- ##STR4## or A is C.sub.4 to C.sub.8 cycloalkylene or A is (CH.sub.2).sub.b --CH-- O wherein b is 0 or 1 and O represents C.sub.3 to C.sub.6 cycloalkyl;
- B is C.sub.1 to C.sub.10 alkylene, phenylene, C.sub.4 to C.sub.12 oxydialkylene or C.sub.4 to C.sub.12 thiodialkylene;
- R.sub.2 is C.sub.1 to C.sub.12 alkyl, C.sub.6 to C.sub.10 aryl, or phenyl substituted with halogen, C.sub.1 to C.sub.12 alkyl, C.sub.1 to C.sub.12 alkoxy, nitro or hydroxy, m has a value of 0, 1 or 2 and n is an integer from 1 to 12.
1 more element
Dependencies are inferred from the claim text.