US4100089A
Expired / Lapsed
US
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High-voltage insulating material comprising anti-tracking and erosion inhibiting compounds with insulating polymers
Assignee: Raychem Corp
•
Filing: 1976-01-16
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Granted: 1978-07-11
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Expires: 1996-01-16
Abstract
Abstract An improved high voltage insulating material comprising one or more polymers and an anti-tracking and erosion inhibiting composition comprising a hydrate of alumina and one or more compounds selected from the groups consisting of nickel phosphate, phosphinic acid or a derivative thereof, phosphonous acid or a derivative thereof, and phosphonic acid or a derivative thereof. The composition functions to prevent failure by tracking and to substantially retard failure by erosion.
Inventors
- 👤 II Travers Kregg Cammack
- 👤 David Dolph Nyberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:33
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/2813; H01B3/00; H01B3/18
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
108 words
A high-voltage electrically insulating material comprising at least one polymer and a composition comprising an additive effective in reducing tracking and a compound selected from the group consisting of nickel phosphate, a compound of Formula I, a compound of Formula II, a compound of Formula III and mixtures thereof; ##STR3## wherein each X is independently selected from oxygen or sulfur and wherein R 1 through R 6 can be the same or different and are independently selected from hydrogen or an organic group bound to P or X by carbon and wherein R 3 , R 5 and R 6 can independently be a metallic or ammonium cation.
Claim 2
Dependent Claim
108 words
A high-voltage electrically insulating material comprising at least one polymer and a composition comprising an additive effective in reducing tracking and a compound selected from the group consisting of nickel phosphate, a compound of Formula I, a compound of Formula II, a compound of Formula III and mixtures thereof; ##STR3## wherein each X is independently selected from oxygen or sulfur and wherein R 1 through R 6 can be the same or different and are independently selected from hydrogen or an organic group bound to P or X by carbon and wherein R 3 , R 5 and R 6 can independently be a metallic or ammonium cation.
Claim 3
Dependent Claim
14 words
The material of claim 1 wherein the anti-tracking additive is a hydrate of alumina.
Claim 4
Dependent Claim
11 words
The material of claim 2 wherein the hydrate is alumina trihydrate.
Claim 5
Dependent Claim
23 words
The material of claim 1 wherein said compound comprises at least 0.1% by weight of the total weight of the electrically insulating material.
Claim 6
Dependent Claim
20 words
The material of claim 4 wherein the compound comprises up to about 5% by weight of the electrically insulating material.
Claim 7
Dependent Claim
19 words
The material of claim 5 wherein the compound comprises 0.35 to 1.5% by weight of the electrically insulating material.
Claim 8
Dependent Claim
20 words
The material of claim 1 wherein the composition comprises at least about 15% by weight of the electrically insulating material.
Claim 9
Dependent Claim
20 words
The material of claim 7 wherein the composition comprises up to about 75% by weight of the electrically insulating material.
Claim 10
Dependent Claim
20 words
The material of claim 8 wherein the composition comprises 20-45% by weight of the weight of the electrically insulating material.
Claim 11
Dependent Claim
11 words
The material of claim 1 wherein the compound is nickel phosphate.
Claim 12
Dependent Claim
14 words
The material of claim 1 wherein the compound is the compound of Formula I.
Claim 13
Dependent Claim
9 words
The material of claim 11 wherein X is oxygen.
Claim 14
Dependent Claim
15 words
The material of claim 12 wherein the compound of Formula I is sodium benzene phosphinate.
Claim 15
Dependent Claim
9 words
The material of claim 11 wherein x is sulfur.
Claim 16
Dependent Claim
15 words
The material of claim 14 wherein the compound of Formula I is cobalt (II) dicyclohexyldithiophosphinate.
Claim 17
Dependent Claim
14 words
The material of claim 1 wherein the compound is the compound of Formula III.
Claim 18
Dependent Claim
9 words
The material of claim 16 wherein X is oxygen.
Claim 19
Dependent Claim
13 words
The material of claim 17 wherein the compound is nickel bis[O-ethyl (3,5-di-t-butyl-4-hydroxybenzyl) phosphonate].
Claim 20
Dependent Claim
10 words
The material of claim 17 wherein the compound is O,O-di-n-octadecyl-(3,5-di-t-butyl-4-hydroxybenzyl)phosphonate.
Claim 21
Dependent Claim
12 words
The material of claim 17 wherein the compound is diethyl benzyl phosphonate.
Claim 22
Dependent Claim
12 words
The material of claim 17 wherein the compound is diamyl amyl phosphonate.
Claim 23
Dependent Claim
12 words
The material of claim 17 wherein the compound is diethyl ethyl phosphonate.
Claim 24
Dependent Claim
12 words
The material of claim 17 wherein the compound is diethyl phenyl phosphonate.
Claim 25
Dependent Claim
14 words
The material of claim 17 wherein the compound is aluminum tri[ O-ethyl benzyl phosphonate].
Claim 26
Dependent Claim
12 words
The material of claim 17 wherein the compound is phenyl phosphonic acid.
Claim 27
Dependent Claim
9 words
The material of claim 16 wherein x is sulfur.
Claim 28
Dependent Claim
14 words
The material of claim 1 wherein the compound is the compound of Formula II.
Claim 29
Dependent Claim
9 words
The material of claim 27 wherein X is oxygen.
Claim 30
Dependent Claim
9 words
The material of claim 27 wherein X is sulfur.
Claim 31
Dependent Claim
109 words
A high-voltage electrically insulating material comprising a heat recoverable polymeric material and a composition comprising an additive effective in reducing tracking and a compound selected from the group consisting of nickel phosphate, a compound of Formula I, a compound of Formula II, a compound of Formula III and mixtures thereof; ##STR4## wherein each X is independently selected from oxygen or sulfur and wherein R 1 through R 6 can be the same or different and are independently selected from hydrogen or an organic group bound to P or X by carbon and wherein R 3 , R 5 and R 6 can independently be a metallic or ammonium cation.
Claim 32
Dependent Claim
109 words
A high-voltage electrically insulating material comprising a heat recoverable polymeric material and a composition comprising an additive effective in reducing tracking and a compound selected from the group consisting of nickel phosphate, a compound of Formula I, a compound of Formula II, a compound of Formula III and mixtures thereof; ##STR4## wherein each X is independently selected from oxygen or sulfur and wherein R 1 through R 6 can be the same or different and are independently selected from hydrogen or an organic group bound to P or X by carbon and wherein R 3 , R 5 and R 6 can independently be a metallic or ammonium cation.
Claim 33
Dependent Claim
11 words
The material of claim 30, wherein the hydrate is alumina trihydrate.
Claim 34
Dependent Claim
19 words
The material of claim 30, wherein the compound comprises 0.35 to 1.5% by weight of the electrically insulating material.
Claim 35
Dependent Claim
20 words
The material of claim 30, wherein the composition comprises at least about 15% by weight of the electrically insulating material.
Claim 36
Dependent Claim
14 words
The material of claim 30, wherein the compound is the compound of Formula I.
Claim 37
Dependent Claim
14 words
The material of claim 30, wherein the compound is the compound of Formula III.
Claim 38
Dependent Claim
14 words
The material of claim 30, wherein the compound is the compound of Formula II.
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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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |