US3878146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cured epoxy resin compositions useful in the protection of electrical cables
Assignee: Hexcel Corp
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Filing: 1973-06-04
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Granted: 1975-04-15
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Expires: 1993-06-04
Abstract
Abstract A composition designed for pumping into flooded electrical cables to displace water. It contains a liquid epoxy resin having a viscosity of about 1.2-250 poises (ASTM D445), and an epoxide equivalent of about 150-198 (ASTM A16552) and an amine type hardener. An oxidized vegetable oil is incorporated to maintain substantially permanent flexibility in the composition after curing. A phthalate or phosphate ester provides reduced initial viscosity to permit pumping of the composition into the cables. A cyclic alcohol such as cyclohexanol provides a non-separating condition and particularly prevents bleed-out of the plasticizer.
Inventors
- 👤 John R Charlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:24
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; C08G59/5013; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08L; C08L63/00; H01B3/00; H01B3/18; H01B3/30; H01B3/40; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A CURED FLEXIBLE EPOXY RESIN COMPOSITION USEFUL IN THE PROTECTION OF ELECTRICAL CABLES SUBJECT TO FLOODING COMPRISING: AN AMINE CURED EPOXY RESIN DERIVED FROM AN EPOXY RESIN HAVING A VISCOSITY BETWEEN ABOUT 1.2-250 POISES (ASTM D445) AND AN EPOXIDE EQUIVALENT OF ABOUT 150-198 (ASTM A1 6552), WHEREIN SAID AMINE IS LINSEED OIL DIAMINE OR A LONG CHAIN, AMINE TERMINATED POLYAMIDE RESIN OBTAINED BY THE TREATMENT OF DIMERIZED LINOLEIC ACID WITH A POLYAMINE; AN OXIDIZED VEGETABLE OIL HAVING AN IODINE VALUE OF LESS THAN ABOUT 170; A PHTHALATE PLASTICIZER FOR SAID EPOXY RESIN IN FROM 10-200 PHR BASED ON SAID EPOXY RESIN; AND FROM 10-200 PHR OF CYCLOHEXANOL, BENZYL ALCOHOL OR PHENYL ETHYL ALCOHOL.
Claim 2
Dependent Claim
113 words
A CURED FLEXIBLE EPOXY RESIN COMPOSITION USEFUL IN THE PROTECTION OF ELECTRICAL CABLES SUBJECT TO FLOODING COMPRISING: AN AMINE CURED EPOXY RESIN DERIVED FROM AN EPOXY RESIN HAVING A VISCOSITY BETWEEN ABOUT 1.2-250 POISES (ASTM D445) AND AN EPOXIDE EQUIVALENT OF ABOUT 150-198 (ASTM A1 6552), WHEREIN SAID AMINE IS LINSEED OIL DIAMINE OR A LONG CHAIN, AMINE TERMINATED POLYAMIDE RESIN OBTAINED BY THE TREATMENT OF DIMERIZED LINOLEIC ACID WITH A POLYAMINE; AN OXIDIZED VEGETABLE OIL HAVING AN IODINE VALUE OF LESS THAN ABOUT 170; A PHTHALATE PLASTICIZER FOR SAID EPOXY RESIN IN FROM 10-200 PHR BASED ON SAID EPOXY RESIN; AND FROM 10-200 PHR OF CYCLOHEXANOL, BENZYL ALCOHOL OR PHENYL ETHYL ALCOHOL.
Claim 3
Dependent Claim
18 words
A composition in accordance with claim 1 wherein said epoxy resin has a viscosity of about 1.6-160 poises.
Claim 4
Dependent Claim
16 words
A composition in accordance with claim 1 wherein said oxidized vegetable oil is oxidized linseed oil.
Claim 5
Dependent Claim
16 words
A composition in accordance with claim 1 wherein said oxidized vegetable oil is oxidized oiticica oil.
Claim 6
Dependent Claim
16 words
A composition in accordance with claim 1 wherein said oxidized vegetable oil is oxidized castor oil.
Claim 7
Dependent Claim
15 words
A composition in accordance with claim 1 wherein said vegetable oil is oxidized soybean oil.
Claim 8
Dependent Claim
12 words
A composition in accordance with claim 1 wherein cyclic alcohol is cyclohexanol.
Claim 9
Dependent Claim
53 words
A composition in accordance with claim 1 wherein said composition includes, in relative amounts, 100 parts of liquid epoxy resin of viscosity 1.6-160 poises, 100-200 phr of oxidized linseed oil having an iodine number of about 110-150, and said ester plasticizer is a phthalate ester present in an amount of about 25-75 phr.
Claim 10
Dependent Claim
24 words
A composition in accordance with claim 8 wherein said cyclic alcohol is cyclohexanol, and said phthalate ester and alcohol each comprise about 30-35 phr.
Claim 11
Dependent Claim
16 words
A composition in accordance with claim 9 wherein said oxidized linseed oil comprises about 125 phr.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |