US4431701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone rubber covered electrical conductor
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1981-09-14
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Granted: 1984-02-14
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Expires: 2001-09-14
Abstract
Abstract A silicone rubber covered electrical conductor is described which has good insulative resistance and is easily stripped for termination. The silicone rubber used as the insulation comprises an organopolysiloxane, a silica filler, zinc oxide or a zinc salt of a fatty acid, and orthochlorobenzoyl peroxide.
Inventors
- 👤 Mitsuo Hamada
- 👤 Sadami Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:26
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C; C08; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/04; C08K5/09; C08K5/14; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/296; Y10T428/2962
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A silicone rubber covered electrical conductor consisting essentially of a metallic conductor covered with a stripable silicone rubber which is made from a composition comprising (1) 100 parts by weight of organopolysiloxane having an average unit formula ##EQU3## wherein R is a monovalent radical selected from the group consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals, and cyanoalkyl radicals, and a is 1.90 to 2.002; (2) 5 to 100 parts by weight of a silica filler in powdered form; (3) 0.05 to 20 parts by weight of zinc oxide; and (4) 0.1 to 5 parts by weight of orthochlorobenzoyl peroxide.
Claim 2
Dependent Claim
101 words
A silicone rubber covered electrical conductor consisting essentially of a metallic conductor covered with a stripable silicone rubber which is made from a composition comprising (1) 100 parts by weight of organopolysiloxane having an average unit formula ##EQU3## wherein R is a monovalent radical selected from the group consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals, and cyanoalkyl radicals, and a is 1.90 to 2.002; (2) 5 to 100 parts by weight of a silica filler in powdered form; (3) 0.05 to 20 parts by weight of zinc oxide; and (4) 0.1 to 5 parts by weight of orthochlorobenzoyl peroxide.
Claim 3
Dependent Claim
14 words
The conductor of claim 1 in which the composition contains fume silica as (2).
Claim 4
Dependent Claim
22 words
The conductor of claim 1 in which the composition contains a polydiorganosiloxane having a portion of the R groups being vinyl groups.
Claim 5
Dependent Claim
22 words
The conductor of claim 2 in which the composition contains from 20 to 60 parts by weight of fume silica as (2).
Claim 6
Dependent Claim
20 words
The conductor of claim 3 in which the composition contains from 0.05 to 5 parts by weight of zinc oxide.
Claim 7
Dependent Claim
68 words
The conductor of claim 1 in which the metallic conductor is selected from copper, tin-plated copper, or aluminum; the organopolysiloxane is a polydiorganosiloxane gum having dimethylsiloxane units and methylvinylsiloxane units; (2) is from 20 to 60 parts by weight of fumed silica filler; (3) is from 0.05 to 5 parts by weight of zinc oxide; and (4) is from 0.5 to 5 parts by weight of orthochlorobenzoyl peroxide.
References Cited (Backward Citations)
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US3162722A
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US3566009A
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US3588318A
Cited
US4145505A
Cited
US4243542A
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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) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |