US4010139A
Expired / Lapsed
US
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Self-extinguishing polyolefinic compositions
Assignee: Montedison Fibre SpA
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Filing: 1975-10-24
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Granted: 1977-03-01
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Expires: 1995-10-24
Abstract
Abstract The present invention relates to new polyolefinic compositions suited for producing self-extinguishing articles.
Inventors
- 👤 Guido Bertelli
- 👤 Pierpaolo Roma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:55
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/01; C08K3/016; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/28; C08K3/30; C08K5/00; C08K5/02; C08K5/04; C08K5/09; C08K5/56; C08L101/00; C08L23/00; C08L23/02; C08L23/10; C08L2203/00; C08L2203/18; C08L57/00; C08L57/06; C08L57/08; C08L91/00; C08L91/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
Polyolefinic compositions suited for the manufacture of self-extinguishing articles, comprising: 1. a polyolefin selected from the group consisting of homopolymers and copolymers of ethylene, alpha olefins and styrene; and 2. a mixture of: a. a bismuth compound selected from the group consisting of basic bismuth carbonate and triphenyl-bismuthine; and b. a partially halogenated compound, thermically unstable, which on heating decomposes with the formation of the corresponding hydrogen halide; component (a) being present in such an amount as to have a bismuth content in the composition lower than 5% by weight, while component (b) is present in an amount comprised between 1% and 10% by weight of the composition.
Claim 2
Dependent Claim
108 words
Polyolefinic compositions suited for the manufacture of self-extinguishing articles, comprising: 1. a polyolefin selected from the group consisting of homopolymers and copolymers of ethylene, alpha olefins and styrene; and 2. a mixture of: a. a bismuth compound selected from the group consisting of basic bismuth carbonate and triphenyl-bismuthine; and b. a partially halogenated compound, thermically unstable, which on heating decomposes with the formation of the corresponding hydrogen halide; component (a) being present in such an amount as to have a bismuth content in the composition lower than 5% by weight, while component (b) is present in an amount comprised between 1% and 10% by weight of the composition.
Claim 3
Dependent Claim
15 words
Compositions according to claim 1 in which the polyolefin is isotactic or predominantly isotactic polypropylene.
Claim 4
Dependent Claim
13 words
Compositions according to or anyone claim 1 in which the polyolefin is polystyrene.
Claim 5
Dependent Claim
20 words
Manufactured articles, such as granules, pipes and other molded articles, obtained starting from the polyolefinic compositions according to claim 1.
Claim 6
Dependent Claim
97 words
Polyolefin compositions suited for the manufacture of self-extinguishing articles comprising: 1. a polyolefin selected from the group consisting of homopolymers and copolymers of ethylene, alpha olefins and styrene; and 2. the reaction product between: a. basic bismuth carbonate; and, b. a partially halogenated compound thermally unstable, which on heating decomposes with formation of the corresponding hydrogen halide; component (a) being present in such an amount as to have a bismuth content in the composition lower than 5% by weight, while component (b) is present in an amount comprised between 1% and 10% by weight of the composition.
Claim 7
Dependent Claim
97 words
Polyolefin compositions suited for the manufacture of self-extinguishing articles comprising: 1. a polyolefin selected from the group consisting of homopolymers and copolymers of ethylene, alpha olefins and styrene; and 2. the reaction product between: a. basic bismuth carbonate; and, b. a partially halogenated compound thermally unstable, which on heating decomposes with formation of the corresponding hydrogen halide; component (a) being present in such an amount as to have a bismuth content in the composition lower than 5% by weight, while component (b) is present in an amount comprised between 1% and 10% by weight of the composition.
Claim 8
Dependent Claim
15 words
Compositions according to claim 5 in which the polyolefin is isotactic or predominantly isotactic polypropylene.
Claim 9
Dependent Claim
11 words
Compositions according to claim 5 in which the polyolefin is polystyrene.
Claim 10
Dependent Claim
20 words
Manufactured articles, such as granules, pipes and other molded articles, obtained starting from the polyolefinic compositions according to claim 5.
Claim 11
Dependent Claim
31 words
Compositions according to claim 1 in which component (a) is present in such an amount as to provide a bismuth content in the composition of between 0.5 and 3% by weight.
Claim 12
Dependent Claim
31 words
Compositions according to claim 5 in which component (a) is present in such an amount as to provide a bismuth content in the composition of between 0.5 and 3% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |