US4584343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable fluorine-containing copolymers, surface-coatings based on these copolymers, and the use thereof
Assignee: Hoechst AG
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Filing: 1984-12-27
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Granted: 1986-04-22
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Expires: 2004-12-27
Abstract
Abstract Crosslinkable fluorine-containing copolymers comprising copolymerized units of (a) a vinyl ester of a heavily branched carboxylic acid, (b) a vinyl ester of a short-chain carboxylic acid and (c) of a fluoroolefin, the vinyl ester groups of component (b) having been converted into OH groups by solvolysis of the copolymer. The copolymers are suitable for coating purposes of any type, in particular as binders in surface-coating systems for industrial surface-coatings.
Inventors
- 👤 Gernot Lohr
- 👤 Josef Mondt
- 👤 Hans Graff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:41
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F214/00; C08F214/18; C08F214/186; C08F8/00; C08F8/12; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
A crosslinkable fluorine-containing copolymer, comprising (a) 20 to 80 mol % of copolymerized units of a vinyl ester of the formula ##STR3## in which R 1 , R 2 and R 3 are branched or straight-chain alkyl radicals or cycloakyl radicals and at most one of these radicals is hydrogen, the total acyl radical of the vinyl ester having at least 9 and at most 28 carbon atoms, (b) 5 to 50 mol % of copolymerized units of a vinyl ester of the formula CH.sub.2 ═Ch--O--CO--R.sup.4 in which R 4 is a straight-chain alkyl radical having 1 to 3 carbon atoms, wherein 90 to 100% of the copolymerized units of said vinyl ester of component (b) are present in the OH form obtained by conversion of the ester groups of said copolymerized vinyl ester units of component (b) into OH groups by solvolysis subsequently to the copolymerization of components (a), (b) and (c), and (c) copolymerized units of a fluoroolefin in a quantity which makes the sum of the components a+b+c up to 100, but with the proviso that at least 10 mol % of copolymerized units of this fluoroolefin are present in the copolymer.
Claim 2
Dependent Claim
195 words
A crosslinkable fluorine-containing copolymer, comprising (a) 20 to 80 mol % of copolymerized units of a vinyl ester of the formula ##STR3## in which R 1 , R 2 and R 3 are branched or straight-chain alkyl radicals or cycloakyl radicals and at most one of these radicals is hydrogen, the total acyl radical of the vinyl ester having at least 9 and at most 28 carbon atoms, (b) 5 to 50 mol % of copolymerized units of a vinyl ester of the formula CH.sub.2 ═Ch--O--CO--R.sup.4 in which R 4 is a straight-chain alkyl radical having 1 to 3 carbon atoms, wherein 90 to 100% of the copolymerized units of said vinyl ester of component (b) are present in the OH form obtained by conversion of the ester groups of said copolymerized vinyl ester units of component (b) into OH groups by solvolysis subsequently to the copolymerization of components (a), (b) and (c), and (c) copolymerized units of a fluoroolefin in a quantity which makes the sum of the components a+b+c up to 100, but with the proviso that at least 10 mol % of copolymerized units of this fluoroolefin are present in the copolymer.
Claim 3
Dependent Claim
116 words
A crosslinkable fluorine-containing copolymer as claimed in claim 1, comprising (a) 20 to 60 mol % of copolymerized units of a vinyl ester of component (a) of claim 1, (b) 5 to 30 mol % of copolymerized units of a vinyl ester of component (b) of claim 1, 90 to 100% of the total number of copolymerized units of this vinyl ester of component (b) being present in the OH form obtained by solvolysis, and (c) copolymerized units of a fluoroolefin in a quantity which makes the sum of the components a+b+c up to 100, but with the proviso that at least 25 mol % of copolymerized units of this fluoroolefin are present in the copolymer.
Claim 4
Dependent Claim
53 words
A crosslinkable fluorine-containing copolymer as claimed in claim 1, wherein the vinyl ester of component (a) contains an acyl radical having 9 to 11 carbon atoms, at most one of the radicals R 1 , R 2 and R 3 being hydrogen and at least one of these radicals being a methyl radical.
Claim 5
Dependent Claim
17 words
A crosslinkable fluorine-containing copolymer as claimed in claim 1, wherein the fluoroolefin of component (c) is tetrafluoroethylene.
References Cited (Backward Citations)
US3100199A
Cited
US3651003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |