US4673620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric thermoplastic low voltage insulation on conductive substrate
Assignee: Advanced Elastomer Systems LP
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Filing: 1986-09-24
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Granted: 1987-06-16
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Expires: 2006-09-24
Abstract
Abstract Nonvulcanized, thermoplastic elastomeric compositions useful in high quality, low voltage insulation. The compositions comprise polyolefin plastics blended with a copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, olefinic elastomer and mineral filler and/or carbon black filler, and, optionally, hydrocarbon oil. Preferably the filler is alumina trihydrate which results in a flame-retardant insulation useful in building and communication wire.
Inventors
- 👤 Cindy B. Shulman
- 👤 Lawrence Spenadel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:32
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/04; C08K5/09; C08K5/54; C08K5/541; C08K5/5425; C08K9/00; C08K9/04; C08K9/06; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L23/10; C08L23/16; C08L91/00; C08L2201/00; C08L2201/02; C08L2205/00; C08L2205/03; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/296; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T428/31938
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
In an insulated, electrically conductive substrate the improvement comprising the use, as the insulation, of a nonvulcanized, thermoplastic elastomeric blend composition comprising (a) polypropylene reactor copolymer, polybutylene, or mixtures thereof, and (b) copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, and (c) olefinic elastomer, and (d) a mineral filler or carbon black filler or mixtures thereof, and, optionally, a hydrocarbon process oil, wherein said olefinic elastomer is selected from the group consisting of ethylene copolymer elastomers and ethylene terpolymer elastomers containing between about 50 and about 70 weight percent ethylene, polyisobutylene, isobutylene-isoprene copolymers elastomers and halogenated isobutylene-isoprene copolymer elastomers.
Claim 2
Dependent Claim
103 words
In an insulated, electrically conductive substrate the improvement comprising the use, as the insulation, of a nonvulcanized, thermoplastic elastomeric blend composition comprising (a) polypropylene reactor copolymer, polybutylene, or mixtures thereof, and (b) copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, and (c) olefinic elastomer, and (d) a mineral filler or carbon black filler or mixtures thereof, and, optionally, a hydrocarbon process oil, wherein said olefinic elastomer is selected from the group consisting of ethylene copolymer elastomers and ethylene terpolymer elastomers containing between about 50 and about 70 weight percent ethylene, polyisobutylene, isobutylene-isoprene copolymers elastomers and halogenated isobutylene-isoprene copolymer elastomers.
Claim 3
Dependent Claim
17 words
The insulation of claim 1 wherein said ethylene copolymer elastomer comprises a copolymer of ethylene and propylene.
Claim 4
Dependent Claim
20 words
The insulation of claim 2 wherein said ethylene terpolymer elastomer comprises a terpolymer of ethylene, propylene and a nonconjugated diene.
Claim 5
Dependent Claim
26 words
The insulation of claim 1 wherein said unsaturated ester of a lower carboxylic acid is selected from the group consisting of vinyl esters and alkyl acrylates.
Claim 6
Dependent Claim
12 words
The insulation of claim 4 wherein said vinyl ester comprises vinyl acetate.
Claim 7
Dependent Claim
21 words
The insulation of claim 4 wherein said alkyl acrylate is selected from the group consisting of methyl acrylate and ethyl acrylate.
Claim 8
Dependent Claim
21 words
The insulation of claim 1 wherein said hydrocarbon oil is selected from the group consisting of paraffinic, naphthenic and aromatic oils.
Claim 9
Dependent Claim
20 words
The insulation of claim 1 wherein said polypropylene reactor copolymer includes ehtylene from about 1 to about 20 weight percent.
Claim 10
Dependent Claim
28 words
The insulation of claim 1 wherein said mineral filler is further treated, either before or after incorporation in said insulation, with an effective amount of a coupling agent.
Claim 11
Dependent Claim
21 words
The insulation of claim 1 including from about 10 to about 40 weight percent of said polypropylene or propylene reactor copolymer.
Claim 12
Dependent Claim
19 words
The insulation of claim 1 including from about 10 to about 35 weight percent of said copolymer of ethylene.
Claim 13
Dependent Claim
16 words
The insulation of claim 1 including from about 10 to about 35 weight percent olefinic elastomer.
Claim 14
Dependent Claim
14 words
The insulation of claim 1 including from about 15 to about 75 percent filler.
Claim 15
Dependent Claim
19 words
The insulated, electrically conductive substrate of claim 1 selected from the group consisting of building wire and communication wire.
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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |