Patent US4770902A successfully refreshed from Google Patents.
US4770902A
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Method for covering an electrical conducting means
Assignee: Millennium Petrochemicals Inc
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Filing: 1985-10-21
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Granted: 1988-09-13
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Expires: 2005-10-21
Abstract
Abstract A method for covering electrical conducting means is disclosed. In this method an ethylene polymer composition comprising a linear ethylene polymer having a density of at least 0.94 and a crosslinking effective amount of an acetylenic diperoxide compound having a one hour half-life decomposition temperature of more than 135 DEG C. is utilized to cover the electrical conducting means.
Inventors
- 👤 Anthony Barlow
- 👤 Melvin F. Maringer
- 👤 Fred K. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:25
CPC Classifications
C; C08; C08F; C08F8/00; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
74 words
A method for covering an electrical conducting means comprising covering an electrical conducting means with an ethylene polymer composition, said composition consisting essentially of a linear ethylene polymer, said polymer containing at least about 90% by weight of ethylene and having a desity of at least about 0.94, a crosslinking effective amount of an acetylenic diperoxide compound having a one hour half-life decomposition temperature of more than 135° C. and a monomeric crosslinking coagent.
Claim 2
Independent Claim
74 words
A method for covering an electrical conducting means comprising covering an electrical conducting means with an ethylene polymer composition, said composition consisting essentially of a linear ethylene polymer, said polymer containing at least about 90% by weight of ethylene and having a desity of at least about 0.94, a crosslinking effective amount of an acetylenic diperoxide compound having a one hour half-life decomposition temperature of more than 135° C. and a monomeric crosslinking coagent.
Claim 3
Dependent Claim
44 words
A method in accordance with claim 1 wherein said acetylenic diperoxide compound is selected from the group consisting of hexynes having the formula ##STR4## octyles having the formula ##STR5## and octynes having the formula ##STR6## wherein R" is tertiary alkyl, alkyl carbonate or benzoate.
Claim 4
Dependent Claim
14 words
A method in accordance with claim 1 wherein said linear ethylene polymer is polyethylene.
Claim 5
Dependent Claim
50 words
A method in accordance with claim 1 wherein said linear ethylene polymer is a copolymer of ethylene and an alpha-olefin containing 3 to 8 carbon atoms, said ethylene present in said copolymer in a concentration of at least 90 percent by weight based on the total weight of the copolymer.
Claim 6
Dependent Claim
13 words
A method in accordance with claim 2 wherein said diperoxy compound is 2,5-dimethyl-2,5-di(t-butylperoxy)-hexyne-3.
Claim 7
Dependent Claim
14 words
A method in accordance with claim 1 wherein said composition includes an ultraviolet inhibitor.
Claim 8
Dependent Claim
14 words
A method in accordance with claim 6 where said ultraviolet inhibitor is carbon black.
Claim 9
Dependent Claim
15 words
A method in accordance with claim 1 wherein said monomeric crosslinking coagent is triallyl cyanurate.
Claim 10
Dependent Claim
16 words
A method in accordance with claim 1 wherein said composition includes a pigment or color additive.
Claim 11
Dependent Claim
14 words
A method in accordance with claim 1 wherein said composition includes a heat stabilizer.
Claim 12
Dependent Claim
15 words
A method in accordance with claim 1 wherein said composition includes a flame retardant compound.
Claim 13
Dependent Claim
19 words
A method in accordance with claim 11 wherein said flame retardant is an organic, heat-labile chlorine or bromine compound.
Claim 14
Dependent Claim
13 words
A method in accordance with claim 12 wherein said composition includes antimony trioxide.
Claim 15
Independent Claim
36 words
A method for covering an electrical conducting means comprising covering an electrical conducting means with a polyethylene composition, said composition consisting essentially of polyethylene having the density of at least about 0.94, 2,5-dimethyl-2,5-di(t-butylperoxy)-hexyne-3 and triallyl cyanurate.
Claim 16
Independent Claim
36 words
A method for covering an electrical conducting means comprising covering an electrical conducting means with a polyethylene composition, said composition consisting essentially of polyethylene having the density of at least about 0.94, 2,5-dimethyl-2,5-di(t-butylperoxy)-hexyne-3 and triallyl cyanurate.
Claim 17
Dependent Claim
16 words
A method in accordance with claim 14 wherein said composition additionally consists essentially of carbon black.
Claim 18
Dependent Claim
19 words
A method in accordance with claim 14 wherein said composition additionally consists essentially of a pigment or color additive.
Claim 19
Dependent Claim
17 words
A method in accordance with claim 14 wherein said composition additionally consists essentially of a heat stabilizer.
Claim 20
Dependent Claim
21 words
A method in accordance with claim 14 wherein said composition additionally consists essentially of an organic, heat-labile chlorine or bromine compound.
Claim 21
Dependent Claim
16 words
A method in accordance with claim 18 wherein said composition additionally consists essentially of antimony trioxide.
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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) | 1991-09-13 | 1992-03-14 | 1992-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-13 | 1996-03-14 | 1996-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-13 | 2000-03-14 | 2000-09-13 | $7700.00 | Window Closed / Lapsed |