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US4369331A
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US
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Ethylene polymer compositions stabilized against water treeing by an organic titanate; and the use thereof as insulation about electrical conductors
Assignee: Union Carbide Corp
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Filing: 1980-12-22
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Granted: 1983-01-18
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Expires: 2000-12-22
Abstract
Abstract The disclosure of this application is directed to a composition, devoid of added mineral filler, comprising an ethylene polymer and an organo titanate as a water treeing inhibitor. The compositions can be extruded about electrical conductors providing insulation thereon which is resistant to deterioration in the presence of moisture and an electrical field.
Inventors
- 👤 Michael J. Keogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:06
CPC Classifications
C; C08; C08F; C08F10/00; H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/2813; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A water treeing resistant, crosslinkable composition, devoid of added mineral filler, comprising an ethylene polymer, a heat stabilizer, an organic peroxide and a hydrolyzable organo titanate having the formula: Ti(OR).sub.4 wherein R is hydrogen or a hydrocarbon radical, with at least one R being a hydrocarbon radical, said hydrolyzable organo titanate being present in an amount sufficient to improve the water treeing resistance of said composition.
Claim 2
Dependent Claim
66 words
A water treeing resistant, crosslinkable composition, devoid of added mineral filler, comprising an ethylene polymer, a heat stabilizer, an organic peroxide and a hydrolyzable organo titanate having the formula: Ti(OR).sub.4 wherein R is hydrogen or a hydrocarbon radical, with at least one R being a hydrocarbon radical, said hydrolyzable organo titanate being present in an amount sufficient to improve the water treeing resistance of said composition.
Claim 3
Dependent Claim
25 words
A composition as defined in claim 1 wherein the organo titanate is present in an amount of about 0.5 to about 2 percent by weight.
Claim 4
Dependent Claim
14 words
A composition as defined in claim 1 wherein each R is a hydrocarbon radical.
Claim 5
Dependent Claim
12 words
A composition as defined in claim 3 wherein each R is alkyl.
Claim 6
Dependent Claim
15 words
A composition as defined in claim 3 wherein the organo titanate is isopropyl tri(lauryl-myristyl) titanate.
Claim 7
Dependent Claim
14 words
A composition as defined in claim 3 wherein the organo titanate is tetra-stearyl titanate.
Claim 8
Dependent Claim
15 words
A composition as defined in claim 3 wherein the organo titanate is tetrakis-(2-ethyl hexyl) titanate.
Claim 9
Dependent Claim
10 words
The crosslinked product of the composition defined in claim 1.
Claim 10
Dependent Claim
13 words
A composition as defined in claim 1 wherein the ethylene polymer is polyethylene.
Claim 11
Dependent Claim
14 words
A composition as defined in claim 1 wherein said heat stabilizer is 4,4'-thiobis(3-methyl-6-tert-butyl phenol).
Claim 12
Dependent Claim
32 words
A composition as defined in claim 1 wherein the organo titanate is present in an amount of about 0.1 to about 5 percent by weight based on the weight of said polymer.
Claim 13
Dependent Claim
15 words
An electrical conductor insulated with the cured product of the 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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |