US3943087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof self extinguishing composition
Assignee: KM Kabelmetal AG
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Filing: 1971-01-25
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Granted: 1976-03-09
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Expires: 1991-01-25
Abstract
Abstract A polymeric composition having a polymer content which tends to evolve deleterious acid compounds upon being subjected to elevated temperatures; 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
2026-10-31 23:57
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
A fireproof self extinguishing composition, comprising: a polymer which evolves hydrogen chloride at temperatures encountered in a fire; a plasticizing amount of a non-flammable plasticizer; and 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 composition is subjected to said temperatures.
Claim 2
Dependent Claim
111 words
A fireproof self extinguishing composition, comprising: a polymer which evolves hydrogen chloride at temperatures encountered in a fire; a plasticizing amount of a non-flammable plasticizer; and 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 composition is subjected to said temperatures.
Claim 3
Dependent Claim
13 words
The composition as defined in claim 1 wherein said material is barium carbonate.
Claim 4
Dependent Claim
12 words
The composition as in claim 1 wherein said material is sodium carbonate.
Claim 5
Dependent Claim
12 words
The composition as in claim 1 wherein said material is potassium carbonate.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein the material is calcium carbonate.
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein the polymer is polychloroprene.
Claim 8
Dependent Claim
11 words
The composition of claim 4 wherein the polymer is polyvinyl chloride.
Claim 9
Dependent Claim
14 words
The composition of claim 4 wherein the nonflammable plasticizer is an aromatic phosphate plasticizer.
Claim 10
Dependent Claim
11 words
The composition of claim 8 wherein the material is calcium carbonate.
Claim 11
Dependent Claim
11 words
The composition of claim 9 wherein the polymer is polyvinyl chloride.
Claim 12
Dependent Claim
10 words
The composition of claim 9 wherein the polymer is polychloroprene.
Claim 13
Dependent Claim
30 words
The composition of claim 1 wherein the plasticizer is present in an amount from about 30 parts to about 80 parts per 100 parts of the polymer, all by weight.
References Cited (Backward Citations)
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Cited
US2687394A
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US2674546A
Cited
US3053802A
Cited
US3084135A
Cited
US3147232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |