US4133936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant ethylene-propylene rubber and insulated conductor product thereof
Assignee: Vulkor Inc
•
Filing: 1977-11-04
•
Granted: 1979-01-09
•
Expires: 1997-11-04
Abstract
Abstract A crosslink curable ethylene-propylene rubber composition with improved resistance to heat, the cured rubber composition and electrical conductors insulated with said cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, talc and carbon black in particular proportions.
Inventors
- 👤 Joseph E. Vostovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:09
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/292; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/14; C08K5/54; C08K5/541; C08K5/5425; C08L; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/32; C08L23/34; C08L61/00; C08L61/20; C08L91/00; C08L2201/00; C08L2201/08; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296; Y10T428/2962
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
An electrical conductor insulated with a cured ethylene-propylene rubber having improved resistance to heat and apt electrical and physical properties, consisting essentially of a metal conductor having thereon an insulating composition of the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-propylene rubber
100
Chlorosulfonated polyethylene
3 - 10
Zinc Oxide 15 - 30
Talc 75 - 200
Vinyl silane 1- 3
Carbon black 10 - 30
Antimony oxide 0 - 10
Antioxidant 0.5 - 6
Peroxide curing agent 2 - 8
Curing Coagent 0 - 3
______________________________________
Claim 2
Dependent Claim
90 words
An electrical conductor insulated with a cured ethylene-propylene rubber having improved resistance to heat and apt electrical and physical properties, consisting essentially of a metal conductor having thereon an insulating composition of the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-propylene rubber
100
Chlorosulfonated polyethylene
3 - 10
Zinc Oxide 15 - 30
Talc 75 - 200
Vinyl silane 1- 3
Carbon black 10 - 30
Antimony oxide 0 - 10
Antioxidant 0.5 - 6
Peroxide curing agent 2 - 8
Curing Coagent 0 - 3
______________________________________
Claim 3
Dependent Claim
58 words
The insulated electrical conductor of claim 1, wherein the insulating composition is the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-Propylene Rubber
100
Chlorosulfonated Polyethylene
5
Zinc Oxide 20
Talc 179
Vinyl Silane 3
Carbon Black 20
Antimony Trioxide 5
Antioxidant 4
Processing Lubricant Oil 54
Peroxide Curing Agent 4.19
Curing Coagent 2 .
______________________________________
Claim 4
Dependent Claim
111 words
An electrical conductor insulated with a cured ethylene-propylene rubber having improved resistance to heat and apt electrical and physical properties, consisting essentially of a metal conductor having thereon an insulating composition of the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-Propylene-Diene Terpolymer
100
Chlorosulfonated Polyethylene
3 - 10
Zinc Oxide 15 - 30
Talc 75 - 200
Vinyl Silane 1 - 3
Carbon Black 10 - 30
Antimony Trioxide 0 - 10
Zinc Salt of 2-mercaptobenzimidazole
0.25 - 3
Polymerized 1,2-dihydro-2,2,4-
trimethylquinoline 0.75 - 3
Diisodecyl Phthalate 0 - 2
Processing Lubricant Oil
0 - 100
Dicumyl Peroxide 2 - 8
Trimethylol Propane Trimethacrylate
0 - 3.
______________________________________
Claim 5
Dependent Claim
111 words
An electrical conductor insulated with a cured ethylene-propylene rubber having improved resistance to heat and apt electrical and physical properties, consisting essentially of a metal conductor having thereon an insulating composition of the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-Propylene-Diene Terpolymer
100
Chlorosulfonated Polyethylene
3 - 10
Zinc Oxide 15 - 30
Talc 75 - 200
Vinyl Silane 1 - 3
Carbon Black 10 - 30
Antimony Trioxide 0 - 10
Zinc Salt of 2-mercaptobenzimidazole
0.25 - 3
Polymerized 1,2-dihydro-2,2,4-
trimethylquinoline 0.75 - 3
Diisodecyl Phthalate 0 - 2
Processing Lubricant Oil
0 - 100
Dicumyl Peroxide 2 - 8
Trimethylol Propane Trimethacrylate
0 - 3.
______________________________________
Claim 6
Dependent Claim
66 words
The insulated electrical conductor of claim 3, wherein the insulating composition is the crosslink cured product, in approximate parts by weight, of: ______________________________________
Ethylene-Propylene-Diene Terpolymer
100
Chlorosulfonated Polyethylene
5
Zinc Oxide 20
Talc 179
Vinyl Silane 3
Carbon Black 20
Antimony Trioxide 5
Zinc Salt of 2-mercaptobenzimidazole
2
Polymerized 1,2-dihydro-2,2,4-Trimethylquinoline
2
Diisodecyl Phthalate 0.5
Processing Lubricant Oil 54
Dicumyl Peroxide 4.19
Trimethylol Propane Trimethacrylate
2
______________________________________
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |