US4514539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stain resistant polymeric insulating compositions
Assignee: BP Performance Polymers Inc
•
Filing: 1983-05-05
•
Granted: 1985-04-30
•
Expires: 2003-05-05
Abstract
Abstract The present invention comprises a stain resistant flame retardant insulating composition that is stain resistant under conditions of natural aging, heat aging, or exposure to gases such as hydrogen sulfide or methane. The inventive insulating composition remains substantially white in color under elevated heating and combustion temperature conditions. The stain resistant electrical insulating composition of the present invention is also flame retardant and has a polymer system comprising ethylene-vinyl acetate copolymer and polyethylene. The composition also utilizes a vinyl silane component as a coupling agent, peroxide cross-linking agents, fillers, and a three part stabilizing system.
Inventors
- 👤 George A. Hattrich
- 👤 Stephen J. Byron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:01
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/34; C08K5/00; C08K5/04; C08K5/14; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L23/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2962
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
81 words
A stain resistant flame retardant insulating composition comprising the following components: ______________________________________
Weight %
(Based upon 100
Resin Component parts of resin)
______________________________________
Ethylene-vinyl acetate copolymer
30-70
Polyethylene 30-70
______________________________________
Parts/100
Additives parts of resin
______________________________________
Filler selected from the group
80-150
consisting of aluminum
trihydrate, hydrated magnesia,
and hydrated calcium silicate
Tetrakis methane 0.5-4
Thiodiethylene hydrocinnamate
0.25-3
Distearothiodipropionate
0.5-4
Vinyl silane 0.5-5
Peroxide selected from the group
1-10
consisting of butylperoxydiisopropylene-
benzene, dicumyl peroxide, t-butylcumyl
peroxide, and mixtures thereof.
______________________________________
Claim 2
Dependent Claim
81 words
A stain resistant flame retardant insulating composition comprising the following components: ______________________________________
Weight %
(Based upon 100
Resin Component parts of resin)
______________________________________
Ethylene-vinyl acetate copolymer
30-70
Polyethylene 30-70
______________________________________
Parts/100
Additives parts of resin
______________________________________
Filler selected from the group
80-150
consisting of aluminum
trihydrate, hydrated magnesia,
and hydrated calcium silicate
Tetrakis methane 0.5-4
Thiodiethylene hydrocinnamate
0.25-3
Distearothiodipropionate
0.5-4
Vinyl silane 0.5-5
Peroxide selected from the group
1-10
consisting of butylperoxydiisopropylene-
benzene, dicumyl peroxide, t-butylcumyl
peroxide, and mixtures thereof.
______________________________________
Claim 3
Dependent Claim
22 words
The composition of claim 1, wherein the polymer system comprises about 60 weight % ethylene-vinyl acetate and about 40 weight % polyethylene.
Claim 4
Dependent Claim
11 words
The composition of claim 1, wherein the filler is aluminum trihydrate.
Claim 5
Dependent Claim
17 words
The composition of claim 1, wherein the polyethylene is in the form of the low density homopolymer.
Claim 6
Dependent Claim
19 words
The composition of claim 1, wherein the ethylene-vinyl acetate copolymer contains about 25 to 35 weight % vinyl acetate.
Claim 7
Dependent Claim
17 words
The composition of claim 5, wherein the ethylene-vinyl acetate copolymer contains about 28 weight % vinyl acetate.
Claim 8
Dependent Claim
24 words
The composition of claim 1, characterized by stain resistance to conditions of natural aging and heat aging at voltages varying up to 2000 volts.
Claim 9
Dependent Claim
30 words
The composition of claim 1, characterized by stain resistance to exposure of gases selected from the group consisting of hydrogen sulfide and methane, at voltages varying up to 2000 volts.
Claim 10
Dependent Claim
19 words
The composition of claim 1, having a color that remains substantially white under elevated heating and combustion temperature conditions.
Claim 11
Dependent Claim
43 words
A stain resistant, flame retardant insulating composition comprising the following components in parts by weight: ______________________________________
Component Parts By Weight
______________________________________
Ethylene-vinyl acetate
60
Polyethylene 40
Hydrated alumina 125
Tetrakis methane 1.5
Thiodiethylene hydrocinnamate
0.75
Distearothiodipropionate
1.5
Vinyl silane 1.75
Butylperoxydiisopropylbenzene
5.75
______________________________________
Claim 12
Dependent Claim
43 words
A stain resistant, flame retardant insulating composition comprising the following components in parts by weight: ______________________________________
Component Parts By Weight
______________________________________
Ethylene-vinyl acetate
60
Polyethylene 40
Hydrated alumina 125
Tetrakis methane 1.5
Thiodiethylene hydrocinnamate
0.75
Distearothiodipropionate
1.5
Vinyl silane 1.75
Butylperoxydiisopropylbenzene
5.75
______________________________________
Claim 13
Dependent Claim
17 words
The composition of claim 10, wherein the ethylene-vinyl acetate copolymer contains about 28 weight % vinyl acetate.
Claim 14
Dependent Claim
19 words
The composition of claim 10, having a color that remains substantially white under elevated heating and combustion temperature conditions.
Claim 15
Independent Claim
113 words
A method for making a stain resistant, flame retardant insulation composition comprising the following components: ______________________________________
Weight %
(Based upon 100
Resin Component parts of resin)
______________________________________
Ethylene-vinyl acetate copolymer
30-70
Polyethylene 30-70
______________________________________
Parts/
Additives 100 parts of resin
______________________________________
Filler selected from the group
80-150
consisting of aluminum
trihydrate, hydrated magnesia,
and hydrated calcium silicate
Tetrakis methane 0.5-4
Thiodiethylene hydrocinnamate
0.25-3
Distearothiodipropionate
0.5-4
Vinyl silane 0.5-5
Peroxide selected from the group
1-10,
consisting of butylperoxydiisopropylene-
benzene, dicumyl peroxide, t-butylcumyl
peroxide, and mixtures thereof
______________________________________ wherein the filler and silane component are intimately contacted by incorporating the silane with the polymer system, followed by addition of the filler and the remaining components.
Claim 16
Independent Claim
113 words
A method for making a stain resistant, flame retardant insulation composition comprising the following components: ______________________________________
Weight %
(Based upon 100
Resin Component parts of resin)
______________________________________
Ethylene-vinyl acetate copolymer
30-70
Polyethylene 30-70
______________________________________
Parts/
Additives 100 parts of resin
______________________________________
Filler selected from the group
80-150
consisting of aluminum
trihydrate, hydrated magnesia,
and hydrated calcium silicate
Tetrakis methane 0.5-4
Thiodiethylene hydrocinnamate
0.25-3
Distearothiodipropionate
0.5-4
Vinyl silane 0.5-5
Peroxide selected from the group
1-10,
consisting of butylperoxydiisopropylene-
benzene, dicumyl peroxide, t-butylcumyl
peroxide, and mixtures thereof
______________________________________ wherein the filler and silane component are intimately contacted by incorporating the silane with the polymer system, followed by addition of the filler and the remaining components.
Claim 17
Dependent Claim
24 words
The method of claim 13, wherein said insulating composition is used in the form of uniinsulation at voltages varying up to about 2000 volts.
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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) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |