Patent US4020214A successfully refreshed from Google Patents.
US4020214A
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Method of making an insulated electrical conductor using pressureless curing of filled ethylene containing polymeric compositions, and an insulated conductor formed thereby
Assignee: Vulkor Inc
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Filing: 1975-11-28
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Granted: 1977-04-26
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Expires: 1995-11-28
Abstract
Abstract A method for curing mineral filled, ethylene-containing polymeric compositions with heat and without applying high pressures, which produces relatively dense and substantially non-porous cured polymeric products. The method comprises the addition of an organic titanate to a curable, mineral filled polymeric composition, and heat curing the composition at approximately ambient atmospheric pressures.
Inventors
- 👤 Burton Thornley MacKenzie, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:10
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/057; C08K5/14; H01B3/308; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
A method of making an insulated electrical conductor having a cured, relatively dense and substantially non-porous insulation comprising polymerized ethylene and mineral filler, comprising the steps of: a. preparing a curable polymeric insulating composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer; peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in amount of about 15 to 200 parts per 100 parts of the ethylene-containing polymer; and at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts per 100 parts of mineral filler; b. forming the prepared curable polymeric insulating composition about a conductor; and c. heating the curable polymeric insulation composition formed about the conductor under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured insulation.
Claim 2
Independent Claim
186 words
A method of making an insulated electrical conductor having a cured, relatively dense and substantially non-porous insulation comprising polymerized ethylene and mineral filler, comprising the steps of: a. preparing a curable polymeric insulating composition by mixing the ingredients thereof in the given approximate relative parts by weight, comprising: an ethylene-containing polymer; peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in amount of about 15 to 200 parts per 100 parts of the ethylene-containing polymer; and at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts per 100 parts of mineral filler; b. forming the prepared curable polymeric insulating composition about a conductor; and c. heating the curable polymeric insulation composition formed about the conductor under substantially ambient atmospheric pressure conditions and thereby curing said polymeric composition to a relatively dense and substantially non-porous cured insulation.
Claim 3
Dependent Claim
40 words
The method of claim 1, wherein the ethylene-containing polymer is selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixture thereof.
Claim 4
Dependent Claim
17 words
The method of claim 2, wherein the ethylene-containing polymer comprises polyethylene, and the mineral filler comprises clay.
Claim 5
Independent Claim
219 words
A method of making an insulated electrical conductor having a cured, relatively dense and substantially non-porous insulation comprising polymerized ethylene and mineral filler, comprising the steps of: a. preparing a curable polymeric insulating composition by mixing the ingredients thereof in the given approximate relative parts by weight comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymer of ethylene and propylene with a diene, and mixture thereof; tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 25 to 150 parts per 100 parts of the ethylene-containing polymer; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 4 to 8 parts per 100 parts of mineral filler; b. forming the prepared curable polymeric insulating composition about a conductor; and, c. heating the curable polymeric insulation composition formed about the conductor under substantially ambient atmospheric pressure conditions and thereby curing said polymeric compositions to a relatively dense and substantially non-porous cured insulation.
Claim 6
Independent Claim
219 words
A method of making an insulated electrical conductor having a cured, relatively dense and substantially non-porous insulation comprising polymerized ethylene and mineral filler, comprising the steps of: a. preparing a curable polymeric insulating composition by mixing the ingredients thereof in the given approximate relative parts by weight comprising: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymer of ethylene and propylene with a diene, and mixture thereof; tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts per 100 parts of the ethylene-containing polymer; mineral filler in an amount of about 25 to 150 parts per 100 parts of the ethylene-containing polymer; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 4 to 8 parts per 100 parts of mineral filler; b. forming the prepared curable polymeric insulating composition about a conductor; and, c. heating the curable polymeric insulation composition formed about the conductor under substantially ambient atmospheric pressure conditions and thereby curing said polymeric compositions to a relatively dense and substantially non-porous cured insulation.
Claim 7
Dependent Claim
123 words
An electrical conductor having a relatively dense and substantially non-porous cured polymeric insulation thereon, comprising a conductor and a layer of insulation comprising the cured product in approximate parts by weight of: an ethylene-containing polymer in amount of 100 parts; mineral filler in an amount of about 15 to 200 parts; peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 8
Dependent Claim
123 words
An electrical conductor having a relatively dense and substantially non-porous cured polymeric insulation thereon, comprising a conductor and a layer of insulation comprising the cured product in approximate parts by weight of: an ethylene-containing polymer in amount of 100 parts; mineral filler in an amount of about 15 to 200 parts; peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 9
Dependent Claim
42 words
The electrical conductor having a relatively dense and substantially non-porous cured polymeric insulation of claim 5, wherein the organic titanate is present in an amount of about 2 to 4 parts by weight per 100 parts by weight of the mineral filler.
Claim 10
Dependent Claim
173 words
An electrical conductor having a relatively dense and substantially non-porous cured polymeric insulation thereon, comprising a conductor and a layer of insulation comprising the cured product in approximate parts by weight of: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof in an amount of 100 parts; at least one mineral filler selected from the group consisting of aluminum silicate, magnesium oxide, titanium dioxide, silica, and glass in amounts of about 15 to 200 parts; tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 11
Dependent Claim
173 words
An electrical conductor having a relatively dense and substantially non-porous cured polymeric insulation thereon, comprising a conductor and a layer of insulation comprising the cured product in approximate parts by weight of: an ethylene-containing polymer selected from the group consisting of polyethylene, copolymers of ethylene and vinyl acetate, copolymers of ethylene and propylene, and terpolymers of ethylene and propylene with a diene, and mixtures thereof in an amount of 100 parts; at least one mineral filler selected from the group consisting of aluminum silicate, magnesium oxide, titanium dioxide, silica, and glass in amounts of about 15 to 200 parts; tertiary organic peroxide curing agent in an amount of about 0.5 to 10 parts; and, at least one organic titanate selected from the group consisting of tetrakis (2-ethylhexyl) titanate, tetrabutyl titanate, and a mixed alkyl titanate comprising about 85 parts isopropyl C 3 by weight and about 15 parts stearyl C 18 by weight in an amount of about 2 to 10 parts by weight per 100 parts by weight of the mineral filler.
Claim 12
Dependent Claim
53 words
The electrical conductor having a relatively dense and substantially non-porous cured polymer insulation of claim 7, wherein the ethylene-containing polymer comprises polyethylene, the mineral filler comprises clay, and the organic titanate is present in an amount of about 2 to 4 parts by weight per 100 parts by weight of the mineral filler.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |