US4259226A
Expired / Lapsed
US
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Solution of fluorinated polymer having carboxylic acid salt groups in polar hydroxylic solvent
Assignee: AGC Inc
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Filing: 1979-01-25
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Granted: 1981-03-31
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Expires: 1999-01-25
Abstract
Abstract A solution of a fluorinated polymer having groups having the formula --COOM wherein M represents an alkali metal atom or a metal atom in group II a or II b of the periodic table or ammonium group or an amine group in a highly polar organic solvent.
Inventors
- 👤 Manabu Suhara
- 👤 Kiyotaka Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:24
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08F; C08F8/00; C08F8/44; C08J3/11; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
A solution of fluorinated polymer having less than 750 of an equivalent value of carboxylic acid groups of the formula --COOM wherein M represents an alkali metal atom or a metal atom in Group IIa or IIb of the periodic table or an ammonium group or an amine group, in a highly polar organic solvent consisting of monoalcohols or polyhydric alcohols.
Claim 2
Dependent Claim
61 words
A solution of fluorinated polymer having less than 750 of an equivalent value of carboxylic acid groups of the formula --COOM wherein M represents an alkali metal atom or a metal atom in Group IIa or IIb of the periodic table or an ammonium group or an amine group, in a highly polar organic solvent consisting of monoalcohols or polyhydric alcohols.
Claim 3
Dependent Claim
27 words
A solution according to claim 1 wherein the fluorinated polymer is a copolymer of a fluorinated olefin and a fluorinated vinyl monomer having carboxylic acid salt groups.
Claim 4
Dependent Claim
17 words
A solution according to claim 1, or 2 wherein the fluorinated polymer is a cation exchange resin.
Claim 5
Dependent Claim
18 words
A solution according to claim 1 wherein the organic solvent has a boiling point lower than 120° C.
Claim 6
Dependent Claim
19 words
A solution according to claim 1 wherein the organic solvent is a C 1 -C 4 alcohol or glycol.
Claim 7
Dependent Claim
20 words
A solution according to claim 1 which has 0.1 to 50 wt. % of a concentration of the fluorinated polymer.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |