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US5079320A
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Cross-linkable fluorinated copolymer, process for its manufacture and its application in protective coatings
Assignee: Arkema France SA
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Filing: 1990-11-09
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Granted: 1992-01-07
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Expires: 2010-11-09
Abstract
Abstract A cross-linkable copolymer formed by polymerizing in solution vinylidene fluoride, tetrafluoroethylene, an allyl ether, and a vinyl ether and protective coating prepared utilizing such copolymer.
Inventors
- 👤 Patrick Kappler
- 👤 Jean-Luc Perillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:47
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; C08; C08F; C08F214/00; C08F214/18; C08F214/22; C08F214/225; C08F214/227; C08F214/26; C08F214/265; C08F214/267; C09D127/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
A cross-linkable copolymer containing the copolymerization radicals of a fluorinated monomer, a hydroxylated allyl ether and a vinyl ether, wherein: (a) the fluorinated monomer radicals originate from the association of vinylidene fluoride and tetrafluoroethylene, (b) the allyl ether radicals originate from a compound of the formula: ##STR4## wherein R is CH 2 OH; R 1 being: H or CH 3 ; R 2 is ##STR5## with "p" being a number selected from 0 to 3, X being (CH 2 )q--O with "q" a number selected from 1 to 3, and R 5 and R 6 , (which can be identical or different) being: CH 2 OH, CH 2 --CH 2 --OH, CH 3 , C 2 H 5 ; R 3 and R 4 being H or OH, but not simultaneously H; and "n" and "m", (which can be identical or different) being numbers selected from 0 to 2; and (c) the vinyl ether radical originate from a compound of the formula: CH 2 ═CH--O--R 7 , wherein R 7 is a linear or branched alkyl radical containing 2 to 8 carbon atoms or a cyclic radical.
Claim 2
Dependent Claim
187 words
A cross-linkable copolymer containing the copolymerization radicals of a fluorinated monomer, a hydroxylated allyl ether and a vinyl ether, wherein: (a) the fluorinated monomer radicals originate from the association of vinylidene fluoride and tetrafluoroethylene, (b) the allyl ether radicals originate from a compound of the formula: ##STR4## wherein R is CH 2 OH; R 1 being: H or CH 3 ; R 2 is ##STR5## with "p" being a number selected from 0 to 3, X being (CH 2 )q--O with "q" a number selected from 1 to 3, and R 5 and R 6 , (which can be identical or different) being: CH 2 OH, CH 2 --CH 2 --OH, CH 3 , C 2 H 5 ; R 3 and R 4 being H or OH, but not simultaneously H; and "n" and "m", (which can be identical or different) being numbers selected from 0 to 2; and (c) the vinyl ether radical originate from a compound of the formula: CH 2 ═CH--O--R 7 , wherein R 7 is a linear or branched alkyl radical containing 2 to 8 carbon atoms or a cyclic radical.
Claim 3
Dependent Claim
36 words
The cross-linkable copolymer of claim 1, wherein the association for 100 moles of the two fluorinated monomers is constituted of: (i) 75 to 25 moles of vinylidene fluoride, and (ii) 75 to 25 moles of tetrafluoroethylene.
Claim 4
Dependent Claim
66 words
The cross-linkable copolymer of claim 2, wherein it comprises radicals originating from: (i) 75 to 25 moles of vinylidene fluoride, (ii) 75 to 25 moles of tetrafluoroethylene, (iii) 4 to 15 moles of allyl ether per 100 moles of the total of the two fluorinated monomers, and (iv) 3 to 35 moles of vinyl ether per 100 moles of the total of the two fluorinated monomers.
Claim 5
Dependent Claim
30 words
The cross-linkable copolymer of claim 3, wherein its intrinsic viscosity in dimethylformamide at 25° C. at a concentration of 1 g/dL is within the range from 0.06 to 0.9 dL/g.
Claim 6
Dependent Claim
55 words
The cross-linkable copolymer of claim 4, wherein it contains radicals from a third fluorinated monomer, which does not contain chlorine in its molecule, in an amount such that, calculated on a monomer basis, it does not represent more than 15 moles per 100 moles of the total of the two monomers, vinylidene fluoride and tetrafluoroethylene.
Claim 7
Dependent Claim
12 words
The cross-linkable copolymer of claim 5, wherein the third monomer is hexafluoropropene.
Claim 8
Dependent Claim
17 words
The cross-linkable copolymer of claims 1 to 6, wherein it is in solution in an organic solvent.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |