US4622364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine-containing copolymer and composition containing the same
Assignee: Daikin Industries Ltd
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Filing: 1986-01-09
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Granted: 1986-11-11
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Expires: 2006-01-09
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 group, glycidyl group and amino group. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination use with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency. The fluorine-containing copolymer is preferably an alternating copolymer comprising chlorotrifluoroethylene and 2,2,3,3-tetrafluoropropyl vinyl ether.
Inventors
- 👤 Akira Ohmori
- 👤 Nobuyuki Tomihashi
- 👤 Yoshiki Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
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: 3
Claim 1
Independent Claim
27 words
A composition suitable for forming which comprises (1) an alternating copolymer comprising chlorotrifluoroethylene and 2,2,3,3-tetrafluoropropyl vinyl ether; and (2) a methyl methacrylate polymer comprising predominantly methyl methacrylate.
Claim 2
Dependent Claim
27 words
A composition suitable for forming which comprises (1) an alternating copolymer comprising chlorotrifluoroethylene and 2,2,3,3-tetrafluoropropyl vinyl ether; and (2) a methyl methacrylate polymer comprising predominantly methyl methacrylate.
Claim 3
Dependent Claim
24 words
The composition of claim 1, wherein the ratio of the alternating copolymer to the methyl methacrylate polymer 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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |