US4069190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant ethylene-propylene rubber and insulated conductor product thereof
Assignee: Vulkor Inc
•
Filing: 1975-05-12
•
Granted: 1978-01-17
•
Expires: 1995-05-12
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 Edward Vostovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
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: 12
Claim 1
Independent Claim
67 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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- 6
Antioxidant 0.5- 6
Peroxide Curing Agent
2- 8
Curing Coagent 0- 3.
______________________________________
Claim 2
Dependent Claim
67 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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- 6
Antioxidant 0.5- 6
Peroxide Curing Agent
2- 8
Curing Coagent 0- 3.
______________________________________
Claim 3
Dependent Claim
12 words
The crosslink cured product of the ethylene-propylene rubber composition of claim 1.
Claim 4
Dependent Claim
62 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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 5
Dependent Claim
62 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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 6
Dependent Claim
12 words
The crosslink cured product of the ethylene-propylene rubber composition of claim 3.
Claim 7
Dependent Claim
71 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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
Process Lubricant Oil 54
Dicumyl Peroxide 4.19
Trimethylol Propane Trimethacrylate
2
______________________________________
Claim 8
Dependent Claim
71 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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
Process Lubricant Oil 54
Dicumyl Peroxide 4.19
Trimethylol Propane Trimethacrylate
2
______________________________________
Claim 9
Dependent Claim
12 words
The crosslink cured product of the ethylene-propylene rubber composition of claim 5.
Claim 10
Dependent Claim
95 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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
0.25 - 3
Diisodecyl Phthalate 0 - 2
Processing Lubricant Oil 0 - 100
Dicumyl Peroxide 2 - 8
Trimethylol Propane Trimethacrylate
0 - 3
______________________________________
Claim 11
Dependent Claim
95 words
A curable ethylene-propylene rubber composition having improved resistance to heat and apt electrical and physical properties, consisting essentially of the combination 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
0.25 - 3
Diisodecyl Phthalate 0 - 2
Processing Lubricant Oil 0 - 100
Dicumyl Peroxide 2 - 8
Trimethylol Propane Trimethacrylate
0 - 3
______________________________________
Claim 12
Dependent Claim
12 words
The crosslink cured product of the ethylene-propylene rubber composition of claim 7.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |