Patent US4689362A successfully refreshed from Google Patents.
US4689362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized olefin polymer insulating compositions
Assignee: BASF Corp
•
Filing: 1986-07-02
•
Granted: 1987-08-25
•
Expires: 2006-07-02
Abstract
Abstract Insulating material for electric wire and cable which consists of an olefin polymer stabilized against electrical failure resulting from voltage stress by the presence therein of a polydialkylsiloxanepolyoxyalkylene block or graft copolymer, the electric wire coated with said insulating material and a method for stabilizing said insulation.
Inventors
- 👤 Martin Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:18
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L23/18; C08L23/20; C08L23/22
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
73 words
An electrical insulation composition consisting essentially of an olefin polymer and an effective voltage stabilizing amount of a polydialkylsiloxanepolyoxyalkylene polymer corresponding to the formulae: ##STR3## wherein a is 2-100, b is 1-100, x is 2-8, d is 2-4 and R is C 1 -C 6 alkyl; and ##STR4## where m is 2-100, n is 1-100, p is 2-4, z is 2-8, y is 2-4 and R 1 is C 1 -C 6 alkyl.
Claim 2
Dependent Claim
73 words
An electrical insulation composition consisting essentially of an olefin polymer and an effective voltage stabilizing amount of a polydialkylsiloxanepolyoxyalkylene polymer corresponding to the formulae: ##STR3## wherein a is 2-100, b is 1-100, x is 2-8, d is 2-4 and R is C 1 -C 6 alkyl; and ##STR4## where m is 2-100, n is 1-100, p is 2-4, z is 2-8, y is 2-4 and R 1 is C 1 -C 6 alkyl.
Claim 3
Dependent Claim
11 words
The composition of claim 1 containing a polymer of formula I.
Claim 4
Dependent Claim
11 words
The composition of claim 1 containing a polymer of formula II.
Claim 5
Dependent Claim
13 words
The composition of claim 2, wherein a is 6-24 and b is 8-30.
Claim 6
Dependent Claim
30 words
The composition of claim 4, wherein a is 15.sup.± 2, each b is 12.sup.± 2, each x is 3, each d is 2 and each R is CH 3 .
Claim 7
Dependent Claim
13 words
The composition of claim 3, wherein m is 3-12 and n is 6-30.
Claim 8
Dependent Claim
32 words
The composition of claim 6, wherein m is 6.sup.± 2, n is 13.sup.± 2, p is 3.sup.± 2, z is 3, y is 2 and each R 1 is CH 3 .
Claim 9
Dependent Claim
20 words
The composition of claim 1, wherein said siloxane polymer is present in a concentration ranging from about 0.1%-5.0%, by weight.
Claim 10
Dependent Claim
56 words
The composition of claim 1, wherein said olefin polymer is selected from the group consisting of low and high density polyethylene, polypropylene, polybutene, polyisobutylene, copolymers of ethylene and α-olefins, copolymers of ethylene and diene monomers, copolymers of ethylene and vinyl monomers, polyethylene/polyvinyl acetate blend, polyethylene/ethylene-propylene copolymer blend, polyethylene/polyhydroxyethyl acrylate blend and the crosslinked olefin variations thereof.
Claim 11
Dependent Claim
21 words
The composition of claim 9, wherein said olefin polymer is high density polyethylene, low density polyethylene or crosslinked low density polyethylene.
Claim 12
Dependent Claim
12 words
The composition of claim 9 which contains an organic peroxide crosslinking agent.
Claim 13
Dependent Claim
15 words
The composition of claim 1 which also contains a sterically hindered phenol or amine antioxidant.
Claim 14
Dependent Claim
13 words
Electric wire or cable insulated with the electrical insulation composition of claim 1.
Claim 15
Dependent Claim
26 words
A method of stabilizing an insulating olefin polymer against electrical failure which comprises incorporating therein an effective stabilizing amount of the polydialkylsiloxanepolyoxyalkylene polymer of claim 1.
References Cited (Backward Citations)
US2888419A
Cited
US2930083A
Cited
US3425983A
Cited
US3979356A
Cited
US3956420A
Cited
US4341675A
Cited
US4472556A
Cited
US4608306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |