US4154892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cables having a sheathing comprising a plasticized vinylchloride polymer
Assignee: ENICHEM POLIMERI SpA ITALIAN Co
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Filing: 1977-08-12
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Granted: 1979-05-15
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Expires: 1997-08-12
Abstract
Abstract Plasticized polymeric compositions based on vinyl chloride polymers and particularly useful as sheathings for electric cables and for similar applications are disclosed. The compositions contain very small amounts, from 0.05 to 3.0 parts, preferably from 0.05 to 1.0 part by weight of SiO2, very small amounts, from 0.0005 to 1.0 preferably from 0.001 to 0.5 part by weight of a phenol-type antioxidant, and optionally but not necessarily small amounts, from 0.5 to 4.0 parts, preferably from 0.05 to 2.0 parts, by weight of oxides and/or hydroxides of magnesium, aluminum, zinc and alkaline earth metals.
Inventors
- 👤 Flaviano Glatti
- 👤 Gastone Slongo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:50
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; C; C08; C08K; C08K13/00; C08K13/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
189 words
Electric cables having, as sheathing, a plasticized polymeric composition the essential constituent of which is a vinylchloride polymer and which also consists of: (a) from 0.05 to 3.0 parts of silica having an average particle size less than 0.01 micron and a surface area larger than 200 m 2 /g; and (b) from 0.0005 to 1.0 part of a phenolic antioxidant for the vinylchloride polymer and selected from the group consisting of derivatives of alkylated phenols, bis-phenols and polyphenols; said compositions also containing the following constituents in parts per 100 parts of the vinylchloride polymer: (c) from 20 to 100 parts of a plasticizer for the vinylchloride polymer; (d) from 0.1 to 10 parts of heat and light stabilizers for the vinylchloride polymer; (e) from 0 to 10 parts of a costabilizer for the vinylchloride polymer; (f) from 0 to 1.0 parts of ultra-violet ray absorbers and/or optical blueing agents for the vinyl-chloride polymer; (g) from 0 to 4.0 parts of a lubricant for the vinyl-chloride polymer; (h) from 0 to 10 parts of TiO 2 and/or carbon black; and (i) from 0 to 100 parts of mineral fillers.
Claim 2
Dependent Claim
189 words
Electric cables having, as sheathing, a plasticized polymeric composition the essential constituent of which is a vinylchloride polymer and which also consists of: (a) from 0.05 to 3.0 parts of silica having an average particle size less than 0.01 micron and a surface area larger than 200 m 2 /g; and (b) from 0.0005 to 1.0 part of a phenolic antioxidant for the vinylchloride polymer and selected from the group consisting of derivatives of alkylated phenols, bis-phenols and polyphenols; said compositions also containing the following constituents in parts per 100 parts of the vinylchloride polymer: (c) from 20 to 100 parts of a plasticizer for the vinylchloride polymer; (d) from 0.1 to 10 parts of heat and light stabilizers for the vinylchloride polymer; (e) from 0 to 10 parts of a costabilizer for the vinylchloride polymer; (f) from 0 to 1.0 parts of ultra-violet ray absorbers and/or optical blueing agents for the vinyl-chloride polymer; (g) from 0 to 4.0 parts of a lubricant for the vinyl-chloride polymer; (h) from 0 to 10 parts of TiO 2 and/or carbon black; and (i) from 0 to 100 parts of mineral fillers.
Claim 3
Dependent Claim
25 words
Electric cables according to claim 1, the sheathing of which contains from 0.05 to 1.0 parts of silica per 100 parts of the vinylchloride polymer.
Claim 4
Dependent Claim
51 words
Electric cables according to claim 1, and the sheathing of which contains from 0.05 to 4.0 parts, per 100 parts of the vinylchloride polymer, of oxides and/or hydroxides of magnesium, aluminum, zinc and alkaline earth metals, in the form of powders having an average particle size of less than 10.0 microns.
Claim 5
Dependent Claim
14 words
Electric cables according to claim 1, and the sheathing of which contains calcium oxide.
Claim 6
Dependent Claim
14 words
Electric cables according to claim 1, and the sheathing of which contains magnesium oxide.
Claim 7
Dependent Claim
14 words
Electric cables according to claim 1, and the sheathing of which contains zinc oxide.
Claim 8
Dependent Claim
30 words
Electric cables according to claim 1, and the sheathing of which contains, per 100 parts of the vinylchloride polymer, from 0.05 to 1.5 parts of calcium, magnesium or zinc oxide.
Claim 9
Dependent Claim
28 words
Electric cables according to claim 1, and the sheathing of which contains, per 100 parts of the vinylchloride polymer, from 0.001 to 0.5 part of a phenolic antioxidant.
References Cited (Backward Citations)
US2426413A
Cited
US3930419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |