Patent US4143030A successfully refreshed from Google Patents.
US4143030A
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Smoke retardant vinyl chloride and vinylidene chloride polymer compositions
Assignee: Geon Co
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Filing: 1977-02-22
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Granted: 1979-03-06
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Expires: 1997-02-22
Abstract
Abstract Vinyl chloride and vinylidene chloride polymer compositions containing alumina trihydrate and bismuth-subcarbonate, produce decreased amounts of smoke on burning.
Inventors
- 👤 Joachim E. Hartitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
59 words
A smoke retardant composition comprising (a) a vinyl chloride or vinylidene chloride polymer, (b) from about 5 to about 150 weight parts of Al 2 O 3 .3H 2 O per 100 weight parts of polymer, and (c) from about 0.25 to about 20 weight parts of Bi 2 O 2 CO 3 per 100 weight parts of polymer.
Claim 2
Dependent Claim
59 words
A smoke retardant composition comprising (a) a vinyl chloride or vinylidene chloride polymer, (b) from about 5 to about 150 weight parts of Al 2 O 3 .3H 2 O per 100 weight parts of polymer, and (c) from about 0.25 to about 20 weight parts of Bi 2 O 2 CO 3 per 100 weight parts of polymer.
Claim 3
Dependent Claim
27 words
A composition of claim 1 wherein said Al 2 O 3 .3H 2 O has an average particle size of from about 0.1 to about 200 microns.
Claim 4
Dependent Claim
26 words
A composition of claim 2 wherein said Bi 2 O 2 CO 3 has an average particle size of from about 0.1 to about 200 microns.
Claim 5
Dependent Claim
27 words
A composition of claim 3 wherein said Al 2 O 3 .3H 2 O has an average particle size of from about 1 to about 5 microns.
Claim 6
Dependent Claim
33 words
A composition of claim 4 wherein the level of Al 2 O 3 .3H 2 O is from about 20 weight parts to about 60 weight parts per 100 weight parts of polymer.
Claim 7
Dependent Claim
32 words
A composition of claim 5 wherein the level of Bi 2 O 2 CO 3 is from about 2 weight parts to about 10 weight parts per 100 weight parts of polymer.
Claim 8
Dependent Claim
25 words
A composition of claim 6 wherein said polymer contains copolymerized therewith up to about 50% by weight of at least one other olefinically unsaturated monomer.
Claim 9
Dependent Claim
48 words
A composition of claim 7 wherein said other monomer is selected from the group consisting of 1-olefins containing from 2 to 12 carbon atoms, vinyl esters, α, β-olefinically unsaturated carboxylic acids and esters thereof, amides of α, β-olefinically unsaturated carboxylic acids, and esters of fumaric and maleic acid.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |