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US4588781A
Expired / Lapsed
US
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Fluorine-containing copolymer and composition containing the same
Assignee: Daikin Industries Ltd
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Filing: 1985-04-12
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Granted: 1986-05-13
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Expires: 2005-04-12
Abstract
Abstract A fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and 0 to 25% by mole of a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency.
Inventors
- 👤 Akira Ohmori
- 👤 Nobuyuki Tomihashi
- 👤 Yoshiki Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:35
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08F; C08F214/00; C08F214/18; C08F214/24; C08F214/242; C08F216/00; C08F216/12; C08F216/14; C08F216/1408; C08L27/00; C08L27/02; C08L27/12; C09; C09D; C09D127/00; C09D127/02; C09D127/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A composition suitable for forming which comprises (1) a fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino, and (2) a methyl methacrylate polymer comprising predominantly methyl methacrylate, wherein the content of chlorotrifluoroethylene is from 40 to 60% by mole, the content of 2,2,3,3-tetrafluoropropyl vinyl ether is from 25 to 50% by mole, and the content of the vinyl ether having said functional group is from 0.5 to 25% by mole.
Claim 2
Dependent Claim
87 words
A composition suitable for forming which comprises (1) a fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino, and (2) a methyl methacrylate polymer comprising predominantly methyl methacrylate, wherein the content of chlorotrifluoroethylene is from 40 to 60% by mole, the content of 2,2,3,3-tetrafluoropropyl vinyl ether is from 25 to 50% by mole, and the content of the vinyl ether having said functional group is from 0.5 to 25% by mole.
Claim 3
Dependent Claim
58 words
The composition of claim 1, wherein the fluorine-containing copolymer comprises 40 to 60% by mole of chlorotrifluoroethylene, 25 to 50% by mole of 2,2,3,3-tetrafluoropropyl vinyl ether and 0.5 to 25% by mole of the vinyl ether having the functional group, and the methyl methacrylate polymer is a methyl methacrylate copolymer containing functional groups, the resulting composition being curable.
Claim 4
Dependent Claim
23 words
The composition of claim 2, wherein the ratio the fluorine-containing copolymer to the methyl methacrylate copolymer is from 1/9 to 9/1 by weight.
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) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |