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US 4,376,180 AGranted
Ethylene polymers stabilized against water-treeing by N-phenyl substituted amino silanes; and the use of these compositions as insulation about electrical conductors
AssigneeUnion Carbide Corporation
InventorsRobert J. Turbett, Arnold C. Ashcraft, Herbert E. Petty
Life of this patent
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Abstract
Compositions, devoid of fillers, comprising an ethylene polymer and an N-phenyl substituted amino silane, which can be extruded about electrical conductors to provide insulation thereon which is resistant to the formation of water trees.
Claims14
A composition, devoid of fillers, comprising an ethylene polymer and an N-phenyl substituted amino silane having the formula:
- ##STR3## wherein:
- R is a monovalent hydrocarbon radical;
- x is 0 to 1 inclusive;
- R.sup.1 is hydrogen or a monovalent hydrocarbon radical;
- R.sup.2 is a divalent hydrocarbon radical;
- R.sup.3 is a monovalent hydrocarbon radical or an oxy substituted hydrocarbon radical;
- R.sup.4 is a monovalent hydrocarbon radical having at least 8 carbon atoms and R.sup.5 is a monovalent hydrocarbon radical;
- wherein said N-phenyl substituted amino silane is present in an amount sufficient to improve the water-treeing resistance of said composition.
5 more elements
A method of improving the water-treeing resistance of an ethylene polymer which comprises adding thereto in an amount of about 0.1 to about 3 percent by weight, an N-phenyl substituted amino silane having the formula:
- ##STR7## wherein:
- R is a monovalent hydrocarbon radical, x has a value of 0 to 1 inclusive;
- R.sup.1 is hydrogen or a monovalent hydrocarbon radical;
- R.sup.2 is a divalent hydrocarbon radical;
- R.sup.3 is a monovalent hydrocarbon radical or oxy substituted hydrocarbon radical;
- R.sup.4 is a monovalent hydrocarbon radical having at least 8 carbon atoms, and R.sup.5 is a monovalent hydrocarbon radical.
3 more elements
Dependencies are inferred from the claim text.