US4608306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-treeing additives containing a polyolefin and a siloxane having aromatic organic groups
Assignee: Dow Silicones Corp
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Filing: 1984-06-19
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Granted: 1986-08-26
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Expires: 2004-06-19
Abstract
Abstract A composition comprising a polyolefin and an additive selected from cyclic siloxanes containing at least one aromatic group attached to silicon; linear siloxanes containing at least one aromatic group and a silanol content greater than 0.4 weight percent, and linear siloxanes containing at least one aromatic group and having a functional group convertible to a silanol content of greater than 0.4 weight percent by ambient hydrolysis conditions.
Inventors
- 👤 Gary A. Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:36
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/54; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L83/00; C08L83/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/296; Y10T428/2962
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
A composition consisting essentially of a polyolefin and 1.0 to 5.0 weight percent, based on the total weight of the polyolefin, of an additive selected from (i) cyclic siloxanes containing at least one aromatic group attached to silicon through a silicon-carbon bond; (ii) liner siloxanes having the general formula HO{C 6 H 5 (CH 3 )SiO} x H wherein x has a value of from 2 to 10, (iii) linear siloxanes having the general formula RO{C 6 H 5 (CH 3 )SiO} x R wherein x has a value of from 2 to 36 and R is selected from a group consisting of CH 3 O-- and ##STR3##
Claim 2
Dependent Claim
108 words
A composition consisting essentially of a polyolefin and 1.0 to 5.0 weight percent, based on the total weight of the polyolefin, of an additive selected from (i) cyclic siloxanes containing at least one aromatic group attached to silicon through a silicon-carbon bond; (ii) liner siloxanes having the general formula HO{C 6 H 5 (CH 3 )SiO} x H wherein x has a value of from 2 to 10, (iii) linear siloxanes having the general formula RO{C 6 H 5 (CH 3 )SiO} x R wherein x has a value of from 2 to 36 and R is selected from a group consisting of CH 3 O-- and ##STR3##
Claim 3
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the additive is the cyclic siloxane (C 6 H 5 (CH 3 )SiO) 3 .
Claim 4
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the additive is the cyclic siloxane (C 6 H 5 (CH 3 )SiO) 4 .
Claim 5
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the additive is the cyclic siloxane (C 6 H 5 (CH 3 )SiO) 5 .
Claim 6
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the additive is the cyclic siloxane (C 6 H 5 (CH 3 )SiO) 6 .
Claim 7
Dependent Claim
31 words
A composition as claimed in claim 1 wherein the additive is a linear siloxane having the general formula CH 3 O(C 6 H 5 (CH 3 )SiO) x CH 3 .
Claim 8
Dependent Claim
19 words
A composition as claimed in claim 1 wherein the additive is a linear siloxane having the general formula ##STR4##
Claim 9
Dependent Claim
21 words
An article which is an electrical cable in which the primary insulation layer is manufactured from the composition of claim 1.
Claim 10
Dependent Claim
21 words
An article which is an electrical cable in which the primary insulation layer is manufactured from the composition of claim 6.
Claim 11
Dependent Claim
21 words
An article which is an electrical cable in which the primary insulation layer is manufactured from the composition of claim 7.
References Cited (Backward Citations)
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Cited
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |