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US 4,309,336 AGranted
Polymeric compositions containing antioxidants
AssigneeThe B. F. Goodrich Company
InventorsJohn T. Lai, Valerie B. Whitehead
Life of this patent
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Abstract
Composition of matter comprising a polymeric material containing xylene-bis(decahydroquinoxalin-2-one) antioxidant, a mixture thereof, or a synergistic mixture thereof with a hindered phenol antioxidant.
Claims9
Composition of matter comprising an organic material subject to attack by oxygen and an effective amount of antioxidant composition comprising an organic compound defined by the following structural formula:
- where R.sup.1 and R.sup.2 are independently selected from hydrogen;
- alkyl and haloalkyl groups of 1 to 12 carbon atoms;
- cyanoalkyl, aminoalkyl, and iminoalkyl groups of 2 to 12 carbon atoms;
- cycloalkyl and hydroxycycloalkyl groups of 4 to 14 carbon atoms;
- aryl and aralkyl groups of 6 to 14 carbon atoms;
- R.sup.1 and R.sup.2 taken together form a cyclic structure selected from cycloalkyl and cycloalkenylene groups containing 4 to 14 carbon atoms;
- R.sup.3 groups are independently selected from hydrogen, alkyl and hydroxyalkyl groups of 1 to 12 carbon atoms, cyanoalkyl groups of 2 to 12 carbon atoms, aminoalkyl groups of 1 to 12 carbon atoms, alkenyl groups of 2 to 14 carbon atoms, and aryl and aralkyl groups of 6 to 14 carbon atoms;
- and R.sup.4 groups are independently selected from hydrogen, alkyl and haloalkyl groups of 1 to 12 carbon atoms, cyanoalkyl groups of 2 to 12 carbon atoms, aminoalkyl groups of 2 to 12 carbon atoms, alkenyl groups of 2 to 14 carbon atoms, and aryl and
5 more elements
Dependencies are inferred from the claim text.