US5034278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree resistant compositions
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1989-06-14
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Granted: 1991-07-23
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Expires: 2009-06-14
Abstract
Abstract 1. A composition comprising: (a) a homopolymer of ethylene having a density in the range of about 0.915 to about 0.925 gram per cubic centimeter and a melt index in the range of 0.1 to about 5 grams per 10 minutes or a copolymer of ethylene and one or more alpha-olefins, each having 3 to 8 carbon atoms, said copolymer having a density in the range of about 0.880 to about 0.915 grams per cubic centimeter and a melt index in the range of about 0.1 to about 10 grams per 10 minutes; and p1 (b) a polysiloxane having the formula: ##STR1## wherein: R=alkyl having 1 to 4 carbon atoms, acyl having 1 to 4 carbon atoms, or trimethyl silyl, and each R is alike or different R'=alkyleneoxy having 3 to 11 carbon atoms R"=hydrogen or alkylhydroxy having 3 carbon atoms and 2 hydroxyl groups. x=about 2 to about 20 y=about 2 to about 20, and the hydroxyl content of the composition is at least about 0.15 percent by weight based on the total weight of the composition.
Inventors
- 👤 Robert J. Turbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415; C08K5/5419; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C08L2203/00; C08L2203/20; C08L2203/202; C08L2312/00; C08L83/00; C08L83/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
176 words
A composition comprising: (a) a homopolymer of ethylene having a density in the range of about 0.915 to about 0.925 gram per cubic centimeter and a melt index in the range of 0.1 to about 5 grams per 10 minutes or a copolymer of ethylene and one or more alpha-olefins, each having 3 to 8 carbon atoms, said copolymer having a density in the range of about 0.880 to about 0.915 gram per cubic centimeter and a melt index in the range of about 0.1 to about 10 grams per 10 minutes; and (b) a polysiloxane having the formula: ##STR4## wherein: R=alkyl having 1 to 4 carbon atoms, acyl having 1 to 4 carbon atoms, or trimethyl silyl, and each R is alike or different R'=alkyleneoxy having 3 to 11 carbon atoms R"=hydrogen or alkylhydroxy having 3 carbon atoms and 2 hydroxyl groups x=about 2 to about 20 y=about 2 to about 20, and the hydroxyl content of the composition is at least about 0.15 percent by weight based on the total weight of the composition.
Claim 2
Dependent Claim
176 words
A composition comprising: (a) a homopolymer of ethylene having a density in the range of about 0.915 to about 0.925 gram per cubic centimeter and a melt index in the range of 0.1 to about 5 grams per 10 minutes or a copolymer of ethylene and one or more alpha-olefins, each having 3 to 8 carbon atoms, said copolymer having a density in the range of about 0.880 to about 0.915 gram per cubic centimeter and a melt index in the range of about 0.1 to about 10 grams per 10 minutes; and (b) a polysiloxane having the formula: ##STR4## wherein: R=alkyl having 1 to 4 carbon atoms, acyl having 1 to 4 carbon atoms, or trimethyl silyl, and each R is alike or different R'=alkyleneoxy having 3 to 11 carbon atoms R"=hydrogen or alkylhydroxy having 3 carbon atoms and 2 hydroxyl groups x=about 2 to about 20 y=about 2 to about 20, and the hydroxyl content of the composition is at least about 0.15 percent by weight based on the total weight of the composition.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein the polysiloxane is present in an amount of about 0.01 to about 3 parts polysiloxane per 100 parts by weight of polymer.
Claim 4
Dependent Claim
21 words
The composition of claim 2 wherein the polysiloxane is present in an amount of at least about 1.0 part by weight.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein component (a) is a homopolymer of ethylene.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein component (a) is a copolymer of ethylene and one or more alpha-olefins.
Claim 7
Dependent Claim
14 words
The composition of claim 1 and at least one antioxidant and an organic peroxide.
Claim 8
Dependent Claim
9 words
The composition of claim 6 and a metal carboxylate.
Claim 9
Dependent Claim
10 words
The composition of claim 1 wherein R=trimethyl silyl x=5 Y=5
Claim 10
Dependent Claim
10 words
The composition of claim 1 wherein: R=trimethyl silyl x=10 y=10
Claim 11
Dependent Claim
12 words
The composition of claim 1 wherein the homopolymer or copolymer are crosslinked.
Claim 12
Dependent Claim
12 words
The composition of claim 6 wherein the homopolymer or copolymer are crosslinked.
Claim 13
Dependent Claim
24 words
An electrical conductor coated with, or having extruded thereabout, the composition of claim 1 wherein the homopolymer or copolymer are in a crosslinked state.
Claim 14
Dependent Claim
14 words
An electrical conductor coated with, or having extruded thereabout, the composition of claim 6.
Claim 15
Dependent Claim
31 words
A cable comprising a metal core conductor and at least one layer surrounding the core comprising the composition of claim 1 wherein the homopolymer or copolymer are in a crosslinked state.
Claim 16
Dependent Claim
15 words
The conductor of claim 13 wherein the homopolymer or copolymer are in a crosslinked state.
Claim 17
Dependent Claim
25 words
The composition of claim 1 wherein the hydroxyl content of the composition is in the range of about 0.15 to about 0.3 percent by weight.
Claim 18
Dependent Claim
25 words
The composition of claim 1 wherein R'R" is CH 2 CH 2 CH 2 OH or C 3 H 6 OCH 2 CH(OH)CH 2 OH.
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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) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |