Patent US3878167A successfully refreshed from Google Patents.
US3878167A
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Flame and smoke retardant vinyl chloride and vinylidene chloride polymer compositions
Assignee: Goodrich Corp
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Filing: 1974-02-01
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Granted: 1975-04-15
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Expires: 1994-02-01
Abstract
Abstract Flame and smoke retardant vinyl chloride and vinylidene chloride polymer compositions are obtained by including therein a compound selected from the group consisting of Si3N4, MoS2 and mixtures thereof.
Inventors
- 👤 William J Kroenke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:19
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08K3/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
A FLAME AND SMOKE RETARDANT COMPOSITION COMPRISING (1) A VINYL CHLORIDE OR VINYLIDENE CHLORIDE POLYMER AND (2) SI3N4, SAID SI3N4 BEING PRESENT IN AN AMOUNT OF FROM ABOUT 0.5 TO ABOUT 10 WEIGHT PARTS PER 100 WEIGHT PARTS OF POLYMER AND HAVING AN AVERAGE PARTICLE SIZE OF FROM ABOUT 100 MICRONS TO ABOUT 0.5 MICRON.
Claim 2
Dependent Claim
55 words
A FLAME AND SMOKE RETARDANT COMPOSITION COMPRISING (1) A VINYL CHLORIDE OR VINYLIDENE CHLORIDE POLYMER AND (2) SI3N4, SAID SI3N4 BEING PRESENT IN AN AMOUNT OF FROM ABOUT 0.5 TO ABOUT 10 WEIGHT PARTS PER 100 WEIGHT PARTS OF POLYMER AND HAVING AN AVERAGE PARTICLE SIZE OF FROM ABOUT 100 MICRONS TO ABOUT 0.5 MICRON.
Claim 3
Dependent Claim
35 words
A composition of claim 1 wherein said polymer contains copolymerized therewith up to about 50 percent by weight of at least one other vinylidene monomer containing at least one terminal CH2 C< group per molecule.
Claim 4
Dependent Claim
23 words
A composition of claim 2 wherein said polymer contains copolymerized therewith up to about 20 percent by weight of said other vinylidene monomer.
Claim 5
Dependent Claim
52 words
A composition of claim 3 wherein said vinylidene monomer is selected from the group consisting of 1-olefins having from two to 12 carbon atoms, vinyl esters, Alpha , Beta -olefinically unsaturated carboxylic acids and esters thereof, amides of Alpha , Beta -olefinically unsaturated carboxylic acids, and esters of fumaric and maleic acid.
Claim 6
Dependent Claim
22 words
A composition of claim 4 wherein said Si3N4 has an average particle size of from about 40 microns to about 0.5 micron.
References Cited (Backward Citations)
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Cited
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US2971908A
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US3264135A
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Cited
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |