US4091055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light transmitting polyvinylidene fluoride or vinylidene fluoride copolymer compositions
Assignee: Kureha Corp
•
Filing: 1976-05-19
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Granted: 1978-05-23
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Expires: 1996-05-19
Abstract
Abstract Light-transmitting compositions containing (1) 50-99% by weight of polyvinylidene fluoride or a vinylidene fluoride copolymer and (2) 1-50% by weight of a copolymer of a vinyl fluoride monomer and at least one acrylate monomer selected from the group consisting of alkyl acrylates and alkyl methacrylates wherein the alkyl group contains from one to four carbon atoms.
Inventors
- 👤 Kunizoh Kidoh
- 👤 Yoshio Kudo
- 👤 Fujio Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:37
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/14; C08L27/16; C08L33/00; C08L33/04; C08L33/06; Y; Y10; Y10S; Y10S260/00; Y10S260/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
72 words
A composition consisting essentially of (1) 50-99% by weight of polyvinylidene fluoride or a vinylidene fluoride copolymer and (2) 1-50% by weight of a copolymer of 6 to 60 percent by weight of a vinyl fluoride monomer and 94 to 40 percent be weight of at least one acrylate monomer selected from the group consisting of alkyl acrylates and alkyl methacrylates wherein the alkyl group contains from one to four carbon atoms.
Claim 2
Dependent Claim
72 words
A composition consisting essentially of (1) 50-99% by weight of polyvinylidene fluoride or a vinylidene fluoride copolymer and (2) 1-50% by weight of a copolymer of 6 to 60 percent by weight of a vinyl fluoride monomer and 94 to 40 percent be weight of at least one acrylate monomer selected from the group consisting of alkyl acrylates and alkyl methacrylates wherein the alkyl group contains from one to four carbon atoms.
Claim 3
Dependent Claim
35 words
The composition according to claim 1, wherein said vinylidene fluoride copolymer consists of 90 percent or more by weight of vinylidene fluoride and 10 percent or less by weight of the other fluorine-containing alkylene monomer.
Claim 4
Dependent Claim
23 words
The composition according to claim 2, wherein said fluorine-containing alkylene monomer is vinyl fluoride, monochloro-trifluoro-ethylene, trifluoro-ethylene, tetrafluoro-ethylene, fluorochlorovinylidene, dichloro-difluoro-ethylene, monochloro-difluoro-ethylene, hexafluoropropylene or pentafluoropropylene.
Claim 5
Dependent Claim
14 words
The composition according to claim 1, wherein said alkyl group is methyl or ethyl.
References Cited (Backward Citations)
US3253060A
Cited
US3524906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |