Patent US4053445A successfully refreshed from Google Patents.
US4053445A
Expired / Lapsed
US
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Solutions of ethylene-chlorotrifluoroethylene copolymers
Assignee: Solvay Solexis Inc
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Filing: 1976-11-01
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Granted: 1977-10-11
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Expires: 1996-11-01
Abstract
Abstract Solutions of a copolymer of about 55 to 95 mol percent chlorotrifluoroethylene and about 45 to 5 mol percent ethylene in an organic solvent. The solutions may optionally contain an organic silane, preferably an aminosilane.
Inventors
- 👤 Stephen R. Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:51
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/54; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
26 words
A solution comprising a copolymer of about 55 to 95 mol percent chlorotrifluoroethylene and about 45 to 5 mol percent ethylene dissolved in an organic solvent.
Claim 2
Dependent Claim
26 words
A solution comprising a copolymer of about 55 to 95 mol percent chlorotrifluoroethylene and about 45 to 5 mol percent ethylene dissolved in an organic solvent.
Claim 3
Dependent Claim
25 words
The solution of claim 1 wherein said copolymer comprises from about 58 to 90 mol percent chlorotrifluoroethylene and about 42 to 10 mol percent ethylene.
Claim 4
Dependent Claim
25 words
The solution of claim 2 wherein said copolymer comprises from about 60 to 80 mol percent chlorotrifluoroethylene and about 40 to 20 mol percent ethylene.
Claim 5
Dependent Claim
30 words
The solution of claim 3 wherein said organic solvent is selected from the group consisting of perchloroethylene, methyl ethyl ketone, methyl isobutyl ketone, chlorobenzene, vinyl acetate, chloroform and mixtures thereof.
Claim 6
Dependent Claim
27 words
The solution of claim 1 wherein said organic solvent is selected from the group consisting of chlorinated hydrocarbons, ketones, esters, ethers, aldehydes, nitrogen-containing compounds and mixtures thereof.
Claim 7
Dependent Claim
23 words
The solution of claim 1 wherein said copolymer is present in said solvent in a concentration of about 0.1 to 40 weight percent.
Claim 8
Dependent Claim
63 words
The solution of claim 1 additionally comprising an organic silane compound having the general formula R(CH 2 ) n --SI(X 3 ), wherein X is a hydrolyzable group selected from OCH 3 and OC 2 H 4 OCH 3 , R is a functional organic radical selected from amino, vinyl, cyclic epoxy, aliphatic epoxy, methacryloxy and mercapto, and n is 0 to 10.
Claim 9
Dependent Claim
23 words
The solution of claim 7 comprising from about 0.1 to 10 weight percent of said silane based on the weight of said copolymer.
Claim 10
Dependent Claim
12 words
The solution of claim 7 wherein said silane is an amino silane.
Claim 11
Dependent Claim
25 words
The solution of claim 9 wherein said copolymer comprises from about 58 to 90 mol percent chlorotrifluoroethylene and about 42 to 10 mol percent ethylene.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |