US3773556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene stabilized with 2,6-di (1-methyl heptadecyl)-4-alkyl phenol
Assignee: Southwire Co LLC
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Filing: 1971-12-29
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Granted: 1973-11-20
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Expires: 1991-12-29
Abstract
Abstract This invention relates to a composition of matter consisting of vulcanizable polyethylene which is protected from oxidative deterioration over a period of time. More specifically this invention is directed to a composition of polyethylene crosslinked by a bisperoxide in the presence of an antioxidant such as 2,6-di(1-methyl heptadecyl)-4-alkyl phenol.
Inventors
- 👤 B Rowland
- 👤 S Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/14; H; H01; H01B; H01B3/00; H01B3/002; H01B3/006; H01B3/18; H01B3/30; H01B3/44; H01B3/441; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/296; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
17 words
A cured composition according to claim 1, having been cured at a teMperature in excess of 130*C.
Claim 2
Dependent Claim
21 words
A composition according to claim 1, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 3
Dependent Claim
17 words
A cured composition according to claim 3, having been cured at a temperature in excess of 130*C.
Claim 4
Dependent Claim
21 words
A composition according to claim 1, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 5
Dependent Claim
17 words
A cured composition according to claim 5, having been cured at a temperature in excess of 130*C.
Claim 6
Dependent Claim
12 words
The composition of claim 1, wherein the antioxidant is 2,6-di(1-methyl heptadecyl)-4-methyl phenol.
Claim 7
Dependent Claim
17 words
A cured composition according to claim 7, having been cured at a temperature in excess of 130*C.
Claim 8
Dependent Claim
21 words
A composition according to claim 7, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 9
Dependent Claim
17 words
A cured composition according to claim 9, having been cured at a temperature in excess of 130*C.
Claim 10
Dependent Claim
21 words
A composition according to claim 7, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 11
Dependent Claim
17 words
A cured composition according to claim 11, having been cured at a temperature in excess of 130*C.
Claim 12
Dependent Claim
12 words
The composition of claim 1, wherein the antioxidant is 2,6-di(1-methyl heptadecyl)-4-ethyl phenol.
Claim 13
Dependent Claim
17 words
A cured composition according to claim 13, having been cured at a temperature in excess of 130*C.
Claim 14
Dependent Claim
21 words
A composition according to claim 13, wherein, the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 15
Dependent Claim
17 words
A cured composition according to claim 15, having been cured at a temperature in excess of 130*C.
Claim 16
Dependent Claim
21 words
A composition according to claim 13, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 17
Dependent Claim
19 words
A cured composition of matter according to claim 17, having been cured at a temperature in excess of 130*C.
Claim 18
Dependent Claim
13 words
An electrical conductor having an insulation coating of the composition of claim 1.
Claim 19
Dependent Claim
49 words
A curable composition comprising: a. a member selected from the group consisting of polyethylene, blends of polyethylene and other polymers, copolymers of ethylene and other polymerizable materials; b. from about 0.1 percent to about 10 percent by weight of the polymerizable material present of a bisperoxide of the formula:
Claim 20
Dependent Claim
13 words
An electrical conductor having an insulation coating of the composition of claim 20.
Claim 21
Dependent Claim
27 words
The process which comprises admixing normally solid poylethylene; from about 0.1 percent to about 10 percent by weight of the polyethylene present of bisperoxide of the formula:
Claim 22
Dependent Claim
49 words
The process which comprises admixing a member selected from the group consisting of polyethylene, blends of polyethylene and other polymers, and copolymers of ethylene and other polymerizable materials, from about 0.1 percent to about 10 percent by weight of the polymerizable material present of a bisperoxide of the formula:
Claim 23
Dependent Claim
69 words
The method of making an electrical conductor having an insulation coating of the composition of claim 1 which comprises: a. extruding the composition, at a temperature of from about 170*F to about 340*F, onto an electrical conductor; b. curing the coated electrical conductor by passing through a continuous vulcanization tube having an operating temperature of from about 350*F to about 480*F; and c. cooling the cured, coated electrical conductor.
Claim 24
Dependent Claim
69 words
The method of making an electrical conductor having an insulation coating of the composition of claim 20, which comprises: a. extruding the composition, at a temperature of from about 170*F to about 340*F, onto an electrical conductor; b. curing the coated electrical conductor by passing through a continuous vulcanization tube having an operating temperature of from about 350*F to about 480*F; and c. cooling the cured, coated electrical conductor.
Claim 25
Dependent Claim
31 words
A curable composition of matter comprising: a. normally solid polyethylene; b. from about 0.1 percent to about 10 percent by weight of the polyethylene present of a bisperoxide of the formula:
Claim 26
Dependent Claim
17 words
A cured composition according to claim 26 having been cured at a temperature in excess of 130*C.
Claim 27
Dependent Claim
21 words
A composition according to claim 26 wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 28
Dependent Claim
17 words
A cured composition according to claim 28, having been cured at a temperature in excess of 130*C.
Claim 29
Dependent Claim
19 words
A composition according to claim 26, wherein the bisperoxide is Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 30
Dependent Claim
17 words
A cured composition according to claim 30, having been cured at a temperature in excess of 130*C.
Claim 31
Dependent Claim
12 words
The composition of claim 26, wherein the antioxidant is 2,6-di(1-methyl heptadecyl)-4-methyl phenol.
Claim 32
Dependent Claim
17 words
A cured composition according to claim 32, having been cured at a temperature in excess of 130*C.
Claim 33
Dependent Claim
21 words
A composition according to claim 32, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 34
Dependent Claim
17 words
A cured composition according to claim 34, having been cured at a temperature in excess of 130*C.
Claim 35
Dependent Claim
21 words
A composition according to claim 32, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 36
Dependent Claim
17 words
A cured composition according to claim 36, having been cured at a temperature in excess of 130*C.
Claim 37
Dependent Claim
12 words
The composition of claim 26, wherein the antioxidant is 2,6-di(1-methyl heptadecyl)-4-ethyl phenol.
Claim 38
Dependent Claim
17 words
A cured composition according to claim 38, having been cured at a temperature in excess of 130*C.
Claim 39
Dependent Claim
21 words
A composition according to claim 38, wherein, the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-t-butyl bisperoxide.
Claim 40
Dependent Claim
17 words
A cured composition according to claim 40, having been cured at a temperature in excess of 130*C.
Claim 41
Dependent Claim
21 words
A cOmposition according to claim 38, wherein the bisperoxide is Alpha , Alpha , Alpha '', Alpha ''-tetramethyl isophthalyl di-cumyl bisperoxide.
Claim 42
Dependent Claim
19 words
A cured composition of matter according to claim 42, having been cured at a temperature in excess of 130*C.
Claim 43
Dependent Claim
13 words
An electrical conductor having an insulation coating of the composition of claim 26.
Claim 44
Dependent Claim
49 words
A curable composition comprising: a. a member selected from the group consisting of polyethylene, blends of polyethylene and other polymers, copolymers of ethylene and other polymerizable materials; b. from about 0.01 percent to about 10 percent by weight of the polymerizable material present of a bisperoxide of the formula:
Claim 45
Dependent Claim
13 words
An electrical conductor having an insulation coating of the composition of claim 45.
Claim 46
Dependent Claim
27 words
The process which comprises admixing normally solid polyethylene; from about 0.1 percent to about 10 percent by weight of the polyethylene present of bisperoxide of the forumla:
Claim 47
Dependent Claim
49 words
The process which comprises admixing a member selected from the group consisting of polyethylene, blends of polyethylene and other polymers, and copolymers of ethylene and other polymerizable materials; from about 0.10 percent to about 10 percent by weight of the polymerizable material present of a bisperoxide of the formula:
Claim 48
Dependent Claim
69 words
The method of making an electrical conductor having an insulation coating of the composition of claim 26, which comprises; a. extruding the composition, at a temperature of from about 170*F to about 340*F, onto an electrical conductor; b. curing the coated electrical conductor by passing through a continuous vulcanization tube having an operating temperature of from about 350*F to about 480*F; and c. cooling the cured, coated electrical conductor.
Claim 49
Dependent Claim
69 words
The method of making an electrical conductor having an insulation coating of the composition of claim 45, which comprises: a. extruding the composition, at a temperature of from about 170*F to about 340*F, onto an electrical conductor; b. curing the coated electrical conductor by passing through a continuous vulcanization tube having an operating temperature of from about 350*F to about 480*F; and c. cooling the cured, coated electrical conductor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |