US5229461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene fluoride copolymer and composition containing the same
Assignee: Daikin Industries Ltd
•
Filing: 1991-05-21
•
Granted: 1993-07-20
•
Expires: 2011-05-21
Abstract
Abstract A vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR1## 1 to 30% by mole of units having the formula (III): ##STR2## 1 to 30% by mole of units having the formula (IV): ##STR3## and a composition comprising the copolymer as the main component. Since the copolymer is excellent in solvent solubility, it can be dissolved in a widely used solvent for coatings and it is not required to treat the film at a high temperature after coating. Moreover, the obtained film is excellent in adhesion to a substrate, glossiness, weatherability, stain resistance and corrosion resistance.
Inventors
- 👤 Hideya Saitoh
- 👤 Yoshiki Shimizu
- 👤 Masayuki Oka
- 👤 Akira Chida
- 👤 Atsushi Sakakura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
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
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR12## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR13## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1to 30% by mole of units having the formula (IV): ##STR14## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
97 words
A vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR12## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR13## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1to 30% by mole of units having the formula (IV): ##STR14## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
25 words
The copolymer of claim 1, which further contains not more than 30% by mole of units other than the units (I), (II), (III) and (IV).
Claim 4
Dependent Claim
25 words
The copolymer of claim 1, wherein the adjacent carbon atom to carbonyl group in said units having the formula (IV) is a quaternary carbon atom.
Claim 5
Dependent Claim
23 words
The copolymer of claim 1, wherein said units having the formula (IV) are units derived from vinyl acetate, vinyl propionate or vinyl butyrate.
Claim 6
Dependent Claim
115 words
A curable composition comprising (A) a vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR15## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR16## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1 to 30% by mole of units having the formula (IV): ##STR17## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms, and a curing agent reactive with hydroxyl group in said copolymer (A).
Claim 7
Dependent Claim
115 words
A curable composition comprising (A) a vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR15## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR16## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1 to 30% by mole of units having the formula (IV): ##STR17## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms, and a curing agent reactive with hydroxyl group in said copolymer (A).
Claim 8
Dependent Claim
108 words
A coating composition comprising (A) a vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR18## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR19## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1 to 30% by mole of units having the formula (IV): ##STR20## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms, and (B) an acrylic resin.
Claim 9
Dependent Claim
108 words
A coating composition comprising (A) a vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I): --CH.sub.2 --CF.sub.2 -- (I) 1 to 30% by mole of units having the formula (II): ##STR18## wherein X is fluorine atom, chlorine atom, hydrogen atom or trifluoromethyl group, 1to 30% by mole of units having the formula (III): ##STR19## wherein R 1 is an alkylene group having 2 to 10 carbon atoms, and 1 to 30% by mole of units having the formula (IV): ##STR20## wherein R 2 is an aromatic group or an alkyl group having 1 to 10 carbon atoms, and (B) an acrylic resin.
Claim 10
Dependent Claim
28 words
The composition of claim 6, wherein said copolymer (A) further contains not more than 30% by mole of units other than the units (I), (II), (III) and (IV).
Claim 11
Dependent Claim
11 words
The composition of claim 6, which further contains a curing agent.
Claim 12
Dependent Claim
36 words
The composition of claim 6, wherein said acrylic resin (B) is a polymer of at least one alkyl esters of acrylic acid and alkyl esters of methacrylic acid, said alkyl having 1 to 10 carbon atoms.
Claim 13
Dependent Claim
32 words
The composition of claim 6, wherein said acrylic resin is a polymer of an acrylic ester or methacrylic ester having a curable functional group at the side chain and/or the polymer ends.
References Cited (Backward Citations)
US4028431A
Cited
US4197380A
Cited
US4345057A
Cited
JPS59102962A
Cited
US4612351A
Cited
US4575533A
Cited
US4631326A
Cited
EP0328157A1
Cited
JPS61275311A
Cited
EP0190654A2
Cited
US4731417A
Cited
US4617351A
Cited
US4935467A
Cited
US4954589A
Cited
US5008340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |