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US4376180A
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Ethylene polymers stabilized against water-treeing by N-phenyl substituted amino silanes; and the use of these compositions as insulation about electrical conductors
Assignee: Union Carbide Corp
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Filing: 1981-09-30
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Granted: 1983-03-08
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Expires: 2001-09-30
Abstract
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.
Inventors
- 👤 Robert J. Turbett
- 👤 Arnold C. Ashcraft
- 👤 Herbert E. Petty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/2813; C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
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 1 is hydrogen or a monovalent hydrocarbon radical; R 2 is a divalent hydrocarbon radical; R 3 is a monovalent hydrocarbon radical or an oxy substituted hydrocarbon radical; R 4 is a monovalent hydrocarbon radical having at least 8 carbon atoms and R 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.
Claim 2
Dependent Claim
102 words
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 1 is hydrogen or a monovalent hydrocarbon radical; R 2 is a divalent hydrocarbon radical; R 3 is a monovalent hydrocarbon radical or an oxy substituted hydrocarbon radical; R 4 is a monovalent hydrocarbon radical having at least 8 carbon atoms and R 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.
Claim 3
Dependent Claim
75 words
A composition, as defined in claim 1, comprising an ethylene polymer and an N-phenyl substituted amino silane having the formula: ##STR4## wherein: R 1 is hydrogen or alkyl having one to 6 carbon atoms; R 2 is alkylene or alkylidene having 2 to 4 carbon atoms, R 3 is alkyl, alkoxy, aryl or cycloaliphatic; R 4 is alkyl of 8 to 18 carbon atoms; and R 5 is alkyl of one to 18 carbon atoms.
Claim 4
Dependent Claim
34 words
A composition as defined in claim 2 wherein the N-phenyl substituted amino silane is present in an amount of about 0.1 to about 3 percent by weight based on the weight of the composition.
Claim 5
Dependent Claim
34 words
A composition as defined in claim 2 wherein the N-phenyl substituted amino silane is present in an amount of about 0.2 to about 2 percent by weight based on the weight of the composition.
Claim 6
Dependent Claim
13 words
A composition as defined in claim 2 wherein the ethylene polymer is polyethylene.
Claim 7
Dependent Claim
18 words
A composition as defined in claim 2 wherein the ethylene polymer is a copolymer of ethylene and butene.
Claim 8
Dependent Claim
12 words
A composition as defined in claim 2 which contains a crosslinking agent.
Claim 9
Dependent Claim
14 words
A composition as defined in claim 7 wherein the crosslinking agent is di-α-cumyl peroxide.
Claim 10
Dependent Claim
11 words
A composition as defined in claim 8 which contains sym-tetramethyltetravinyl cyclotetrasiloxane.
Claim 11
Dependent Claim
15 words
The crosslinked product of the composition defined in claim 7, claim 8, or claim 9.
Claim 12
Dependent Claim
17 words
A composition as defined in claim 2 wherein the N-phenyl substituted amino silane has the formula: ##STR5##
Claim 13
Dependent Claim
21 words
A composition as defined in claim 2 containing a mixture of N-phenyl substituted amino silanes having, on average, a formula: ##STR6##
Claim 14
Independent Claim
101 words
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 1 is hydrogen or a monovalent hydrocarbon radical; R 2 is a divalent hydrocarbon radical; R 3 is a monovalent hydrocarbon radical or oxy substituted hydrocarbon radical; R 4 is a monovalent hydrocarbon radical having at least 8 carbon atoms, and R 5 is a monovalent hydrocarbon radical.
Claim 15
Independent Claim
101 words
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 1 is hydrogen or a monovalent hydrocarbon radical; R 2 is a divalent hydrocarbon radical; R 3 is a monovalent hydrocarbon radical or oxy substituted hydrocarbon radical; R 4 is a monovalent hydrocarbon radical having at least 8 carbon atoms, and R 5 is a monovalent hydrocarbon radical.
Claim 16
Dependent Claim
16 words
An electrical conductor having as insulation thereon the composition or crosslinked composition defined in claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |