Patent US3853811A successfully refreshed from Google Patents.
US3853811A
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US
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Flame resistant ethylene-chlorotrifluoroethylene copolymer compositions
Assignee: Solvay Solexis Inc
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Filing: 1973-05-07
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Granted: 1974-12-10
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Expires: 1993-05-07
Abstract
Abstract A flame resistant ethylene-chlorotrifluoroethylene copolymer composition comprising the copolymer and a flame retardant compound selected from the group consisting of tin oxides, tin phosphates, stannous oxalate and mixtures thereof. Preferred flame retardant compounds include stannic oxide hydrate, stannous phosphate (tribasic), stannous oxalate and stannous pyrophosphate.
Inventors
- 👤 S Chandrasekaran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
A COMPOSITION COMPRISING A COPOLYMER OF ETHYLENE AND CHLOROTRIFLUOROETHYLENE, SAID COPOLYMER CONTAINING BETWEEN ABOUT 40 TO ABOUT 60 MOL PERCENT ETHYLENE UNITS AND CORRESPONDINGLY BETWEEN ABOUT 60 AND ABOUT 40 MOL PERCENT OF CHLOROTRIFLUOROETHYLENE UNITS, AND AN EFFECTIVE AMOUNT OF A FLAME RETARDANT ADDITIVE SELECTED FROM THE GROUP CONSISTING OF TIN OXIDES, TIN PHOSPHATES, STANNOUS OXALATE AND MIXTURES THEREOF.
Claim 2
Dependent Claim
59 words
A COMPOSITION COMPRISING A COPOLYMER OF ETHYLENE AND CHLOROTRIFLUOROETHYLENE, SAID COPOLYMER CONTAINING BETWEEN ABOUT 40 TO ABOUT 60 MOL PERCENT ETHYLENE UNITS AND CORRESPONDINGLY BETWEEN ABOUT 60 AND ABOUT 40 MOL PERCENT OF CHLOROTRIFLUOROETHYLENE UNITS, AND AN EFFECTIVE AMOUNT OF A FLAME RETARDANT ADDITIVE SELECTED FROM THE GROUP CONSISTING OF TIN OXIDES, TIN PHOSPHATES, STANNOUS OXALATE AND MIXTURES THEREOF.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein said copolymer contains between about 45 to about 55 mol percent of ethylene units and correspondingly between about 55 and about 45 mol percent of chlorotrifluoroethylene units.
Claim 4
Dependent Claim
27 words
The composition of claim 1 wherein said flame retardant additive is present in an amount between about 0.1 to about 20 percent by weight of the copolymer.
Claim 5
Dependent Claim
26 words
The composition of claim 3 wherein said flame retardant additive is present in an amount between about 5 to about 15% by weight of the copolymer.
Claim 6
Dependent Claim
14 words
The composition of claim 1 wherein saId flame retardant additive is stannic oxide hydrate.
Claim 7
Dependent Claim
14 words
The composition of claim 1 wherein said flame retardant additive is tribasic stannous phosphate.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein said flame retardant additive is stannous oxalate.
Claim 9
Dependent Claim
13 words
The composition of claim 1 wherein said flame retardant additive is stannous pyrophosphate.
Claim 10
Dependent Claim
46 words
The composition of claim 2 including a stabilizer system comprising a mixture of a phsophite of an organic polyhydric phenol, a salt of a carboxylic acid and a metal of Group II of the Periodic Table and an ester or alkali metal salt of thiodipropionic acid.
References Cited (Backward Citations)
US3211768A
Cited
US3501446A
Cited
US3412125A
Cited
US3418267A
Cited
US3644859A
Cited
US3745145A
Cited
US3723383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |