US4150193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated electrical conductors
Assignee: Union Carbide Corp
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Filing: 1977-12-19
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Granted: 1979-04-17
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Expires: 1997-12-19
Abstract
Abstract Vulcanizable semi-conducting compositions that can be used to provide strippable insulation shielding compositions for electrical conductors, and articles of manufacture wherein the crosslinked product of said vulcanizable compositions are directly bonded to a crosslinked polyolefin substrate.
Inventors
- 👤 Norman M. Burns, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:41
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/448; H01B1/00; H01B1/20; H01B1/24; H01B3/441; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
133 words
A vulcanizable semi-conductive insulation shielding composition consisting essentially of, based on the total weight of said composition, (A) about 40 to 90 weight percent of an ethylene-vinyl acetate copolymer containing from about 27 to 45 weight percent of vinyl acetate based on the total weight of said copolymer, (B) about 3 to about 15 weight percent of a low density low molecular weight polyethylene homopolymer having a number average molecular weight of about 2,000 to about 10,000, a density of about 0.85 up to about 0.93 grams per cubic centimeter and a melt index of 20 to 500 when measured according to ASTM D-1238 at 125° C., (C) about 8 to about 45 weight percent of carbon black, and (D) about 0.2 to about 5 weight percent of an organic peroxide crosslinking agent.
Claim 2
Dependent Claim
133 words
A vulcanizable semi-conductive insulation shielding composition consisting essentially of, based on the total weight of said composition, (A) about 40 to 90 weight percent of an ethylene-vinyl acetate copolymer containing from about 27 to 45 weight percent of vinyl acetate based on the total weight of said copolymer, (B) about 3 to about 15 weight percent of a low density low molecular weight polyethylene homopolymer having a number average molecular weight of about 2,000 to about 10,000, a density of about 0.85 up to about 0.93 grams per cubic centimeter and a melt index of 20 to 500 when measured according to ASTM D-1238 at 125° C., (C) about 8 to about 45 weight percent of carbon black, and (D) about 0.2 to about 5 weight percent of an organic peroxide crosslinking agent.
Claim 3
Dependent Claim
34 words
A vulcanizable composition as defined in claim 1, wherein the polyethylene homopolymer is present in an amount of about 5 to about 10 percent by weight based on the total weight of the composition.
Claim 4
Dependent Claim
31 words
A vulcanizable composition as defined in claim 1, wherein about 0.2 to about 1 percent by weight of an antioxidant based on the total weight of the composition is also present.
Claim 5
Dependent Claim
29 words
A vulcanizable composition as defined in claim 3, wherein said ethylene-vinyl acetate copolymer contains about 28 weight percent of vinyl acetate based upon the total weight of said copolymer.
Claim 6
Dependent Claim
46 words
A vulcanizable composition as defined in claim 4, wherein the polyethylene homopolymer has a density of about 0.88 g/cm 3 , a number average molecular weight of about 4000 and a melt index of 80 to 360 when measured according to ASTM D-1238 at 125° C.
Claim 7
Dependent Claim
34 words
A vulcanizable composition as defined in claim 5, wherein the polyethylene homopolymer is present in an amount of about 5 to about 10 percent by weight based on the total weight of the composition.
Claim 8
Dependent Claim
34 words
A vulcanizable composition as defined in claim 1, wherein the organic peroxide is present in an amount of from 0.6 to about 2 percent by weight based on the total weight of the composition.
Claim 9
Dependent Claim
67 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 1, said crosslinked product being directly bonded to a crosslinked polyolefin substrate, said crosslinked polyolefin having been derived from a polyolefin having a number average molecular weight of at least 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 10
Dependent Claim
16 words
A article of manufacture as defined in claim 8, wherein said polyolefin is a polyethylene homopolymer.
Claim 11
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 2, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 12
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 3, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 13
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 4, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 14
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 5, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 15
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 6, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 16
Dependent Claim
69 words
An article of manufacture comprising the crosslinked product of a vulcanizable semi-conductive composition as defined in claim 7, said crosslinked product being directly bonded to a crosslinked polyethylene substrate, said crosslinked polyethylene having been derived from a polyethylene homopolymer having a number average molecular weight of at least about 15,000 and a melt index of about 0.2 to about 20 when measured according to ASTM D-1238 at 190° C.
Claim 17
Dependent Claim
34 words
An article of manufacture as defined in claim 8, wherein said crosslinked polyolefin substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 18
Dependent Claim
34 words
An article of manufacture as defined in claim 9, wherein said crosslinked polyolefin substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 19
Dependent Claim
34 words
An article of manufacture as defined in claim 10, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 20
Dependent Claim
34 words
An article of manufacture as defined in claim 11, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 21
Dependent Claim
34 words
An article of manufacture as defined in claim 12, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 22
Dependent Claim
34 words
An article of manufacture as defined in claim 13, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 23
Dependent Claim
34 words
An article of manufacture as defined in claim 14, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
Claim 24
Dependent Claim
34 words
An article of manufacture as defined in claim 15, wherein said crosslinked polyethylene substrate is the primary insulation of an electrical conductor and said crosslinked product is the external semi-conductive shielding for said insulation.
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |