US4008368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductor having inhibited polymer compositions
Assignee: KM Kabelmetal AG
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Filing: 1975-12-03
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Granted: 1977-02-15
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Expires: 1995-12-03
Abstract
Abstract A polymeric composition having a polymer content which tends to evolve deleterious acid compounds upon being subjected to elevated temperatues; the composition including selected particle matter which is present in an amount to combine with or otherwise neutralize essentially the entire evolved deleterious compound when the composition is subjected to elevated temperatures; the composition with or without plasticizers being useful as insulation or jacketings for electric wire and cable, as well as diverse molded or extruded products, including disposable items such as packaging or the like.
Inventors
- 👤 Ottmar Leuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
In an article, comprising an electrical conductor, an insulator and a jacket, the improvement comprising, at least one of said jacket and insulator being formed from a member selected from the group consisting of polyvinyl chloride and polychloroprene, said member being plasticized with a plasticizing amount of a non-flammable plasticizer, said member containing a material selected from the group consisting of the carbonates of calcium, barium, magnesium, strontium, sodium, potassium, lithium and mixtures thereof, said material having an average particle size which does not exceed 250 millimicrons and being present in an amount which is at least sufficient to combine with essentially the entire amount of hydrogen chloride which is evolved at temperatures which occur in a fire to thereby prevent evolution into the surrounding atmosphere of the hydrogen chloride when the article is subjected to said temperatures.
Claim 2
Dependent Claim
138 words
In an article, comprising an electrical conductor, an insulator and a jacket, the improvement comprising, at least one of said jacket and insulator being formed from a member selected from the group consisting of polyvinyl chloride and polychloroprene, said member being plasticized with a plasticizing amount of a non-flammable plasticizer, said member containing a material selected from the group consisting of the carbonates of calcium, barium, magnesium, strontium, sodium, potassium, lithium and mixtures thereof, said material having an average particle size which does not exceed 250 millimicrons and being present in an amount which is at least sufficient to combine with essentially the entire amount of hydrogen chloride which is evolved at temperatures which occur in a fire to thereby prevent evolution into the surrounding atmosphere of the hydrogen chloride when the article is subjected to said temperatures.
Claim 3
Dependent Claim
11 words
The article of claim 1 wherein said member is polyvinyl chloride.
Claim 4
Dependent Claim
11 words
The article of claim 2 wherein said material is calcium carbonate.
Claim 5
Dependent Claim
14 words
The article of claim 3 wherein the non-flammable plasticizer is an aromatic phosphate plasticizer.
Claim 6
Dependent Claim
30 words
The article of claim 4 wherein the plasticizer is present in an amount from about 5 parts to about 80 parts per hundred parts of the polymer, all by weight.
Claim 7
Dependent Claim
10 words
The article of claim 1 wherein said member is polychloroprene.
Claim 8
Dependent Claim
11 words
The article of claim 6 wherein said material is calcium carbonate.
Claim 9
Dependent Claim
14 words
The article of claim 7 wherein the non-flammable plasticizer is an aromatic phosphate plasticizer.
Claim 10
Dependent Claim
30 words
The article of claim 8 wherein the plasticizer is present in an amount from about 30 parts to about 80 parts per hundred parts of the polymer, all by weight.
Claim 11
Dependent Claim
13 words
The article of claim 5 wherein the jacket is formed from said member.
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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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |