Patent US3962373A successfully refreshed from Google Patents.
US3962373A
Expired / Lapsed
US
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Compositions of 3,3,3-trifluoro-2-trifluoromethyl propene/vinylidene fluoride copolymer and polytetrafluoroethylene
Assignee: Solvay Solexis Inc
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Filing: 1974-10-21
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Granted: 1976-06-08
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Expires: 1994-10-21
Abstract
Abstract Composition comprising a blend of from about 25 to 99% by weight of a copolymer of 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride and correspondingly from about 75 to 1% by weight of a low molecular weight, particulate polytetrafluoroethylene resin having a maximum particle size of about 15 microns and a melt index, as hereinafter defined, in the range of about 0.5 to 20.
Inventors
- 👤 Frank Petrucelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:23
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L27/18; Y; Y10; Y10S; Y10S525/00; Y10S525/934; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
A blended composition in powder form comprising from about 25 to about 99 weight percent of a copolymer of 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride and from about 75 to about 1 weight percent of a low molecular weight, particulate polytetrafluoroethylene resin having a maximum particle size of about 15μ and a melt index of about 0.5 to 20.
Claim 2
Dependent Claim
58 words
A blended composition in powder form comprising from about 25 to about 99 weight percent of a copolymer of 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride and from about 75 to about 1 weight percent of a low molecular weight, particulate polytetrafluoroethylene resin having a maximum particle size of about 15μ and a melt index of about 0.5 to 20.
Claim 3
Dependent Claim
27 words
The composition of claim 1 comprising about 40 to about 99 weight percent of said copolymer and about 60 to about 1 weight percent of said polytetrafluoroethylene.
Claim 4
Dependent Claim
27 words
The composition of claim 2 comprising about 80 to about 95 weight percent of said copolymer and about 25 to about 5 weight percent of said polytetrafluoroethylene.
Claim 5
Dependent Claim
26 words
The composition of claim 1 comprising about 25 to about 95 weight percent of said copolymer and about 75 to 5 weight percent of said polytetrafluoroethylene.
Claim 6
Dependent Claim
27 words
The composition of claim 4 comprising about 40 to about 60 weight percent of said copolymer and about 60 to about 40 weight percent of said polytetrafluoroethylene.
Claim 7
Dependent Claim
33 words
The composition of claim 1 wherein said copolymer contains from about 1 to about 55 mol percent of 3,3,3-trifluoro-2-trifluoromethyl propene and correspondingly from about 99 to about 45 mol percent of vinylidene fluoride.
Claim 8
Dependent Claim
12 words
The composition of claim 5 wherein said composition includes a stabilizing agent.
Claim 9
Dependent Claim
18 words
The composition of claim 1 wherein said melt index is in the range of about 1 to 5.
Claim 10
Dependent Claim
10 words
A coated article coated with the composition of claim 1.
Claim 11
Dependent Claim
12 words
The coated article of claim 9 wherein the substrate is a metal.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |