Patent US4282333A successfully refreshed from Google Patents.
US4282333A
Expired / Lapsed
US
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Polyolefin series resin composition for water-tree retardant electric insulation
Assignee: Furukawa Electric Co Ltd
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Filing: 1980-01-23
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Granted: 1981-08-04
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Expires: 2000-01-23
Abstract
Abstract A polyolefin series resin composition for water-tree retardant electric insulation which comprises a polyolefin series resin and an organic isocyanate compound having at least one isocyanate radical in the molecule, or said polyolefin series resin, said organic isocyanate compound and an organic peroxide.
Inventors
- 👤 Shin-ichi Irie
- 👤 Kenji Uesugi
- 👤 Hitoshi Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:06
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B7/00; H01B7/17; H01B7/28; H01B7/2813; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
30 words
A polyolefin series resin composition for water-tree retardant electric insulation which comprises a polyolefin series resin and an organic isocyanate compound having at least one isocyanate radical in the molecule.
Claim 2
Dependent Claim
30 words
A polyolefin series resin composition for water-tree retardant electric insulation which comprises a polyolefin series resin and an organic isocyanate compound having at least one isocyanate radical in the molecule.
Claim 3
Dependent Claim
20 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 1, which further comprises an organic peroxide.
Claim 4
Dependent Claim
42 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 1 or 2, wherein the organic isocyanate compound is added in an amount of 0.1 to 10.0 parts by weight to 100 parts by weight of polyolefin series resin.
Claim 5
Dependent Claim
39 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 2, wherein the organic peroxide is added in an amount of 0.5 to 5.0 parts by weight to 100 parts by weight of polyolefin series resin.
Claim 6
Dependent Claim
52 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 1, wherein the polyolefin series resin is one selected from the group consisting of polyethylene in the broad sense, chlorinated polyethylene, ethylene-vinyl acetate copolymer and ethylene-propylene copolymer and a mixture of at least two resins selected from said group.
Claim 7
Dependent Claim
37 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 1, wherein the polyolefin series resin is one selected from the group consisting of high density polyethylene, medium density polyethylene and low density polyethylene.
Claim 8
Dependent Claim
50 words
The polyolefin series resin composition for water-tree retardant electric insulation according to any one of claims 1, 2, 4, 5 or 6 wherein the organic isocyanate compound is an organic polyisocyanate compound expressed by the general formula: R--(NCO)n where: R=an aromatic or aliphatic residue n=an integer of 2 to 4.
Claim 9
Dependent Claim
39 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 2, wherein the organic peroxide is one selected from the group consisting of di-t-butyl peroxide; t-butyl cumyl-peroxide; dicumyl perioxide; 2,5-dimethyl-2,5-di-(t-butylperoxy) hexane; 2,5-dimethyl-2,5-di-(t-peroxy) hexane-3; and 1,3-bis-(t-butylperoxyisopropyl) benzene.
Claim 10
Dependent Claim
23 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 1 or 2, which further comprises a high temperature antioxidant.
Claim 11
Dependent Claim
26 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 9, wherein the high temperature antioxidant is a steric hindered type phenol compound.
Claim 12
Dependent Claim
47 words
The polyolefin series resin composition for water-tree retardant electric insulation according to any one of claims 4, 5, 6 or 8, wherein the organic isocyanate compound is added in an amount of 0.1 to 10.0 parts by weight to 100 parts by weight of polyolefin series resin.
Claim 13
Dependent Claim
40 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 7, wherein the organic isocyanate compound is added in an amount of 0.1 to 10.0 parts by weight to 100 parts by weight of polyolefin series resin.
Claim 14
Dependent Claim
40 words
The polyolefin series resin composition for water-tree retardant electric insulation according to claim 9, wherein the organic isocyanate compound is added in an amount of 0.1 to 10.0 parts by weight to 100 parts by weight of polyolefin series resin.
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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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |