US4824911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends and molded articles comprising methacrylate polymers and vinylidene fluoride - hexafluoropropylene copolymer
Assignee: Mobil Oil AS
•
Filing: 1987-08-21
•
Granted: 1989-04-25
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Expires: 2007-08-21
Abstract
Abstract Blending a minor proportion of a copolymer of vinylidene fluoride and hexafluoropropylene with a major proportion of a methacrylate polymer such as polymethylmethacrylate improves the toughness of the methacrylate polymer and gives compositions suitable for molded articles.
Inventors
- 👤 Shaw-Chang Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:18
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L27/00; C08L27/02; C08L27/12; C08L27/16; Y; Y10; Y10S; Y10S525/00; Y10S525/931
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A blend comprising (a) 60 to 95 weight percent of a solid methacrylate polymer in which the predominant component is methyl methacrylate, ethyl methacrylate or a mixture thereof; and (b) 5 to 40 weight percent of a solid fluorocarbon copolymer of 60 to 90 weight percent vinylidene fluoride and 10 to 40 weight percent hexafluoropropylene, wherein said blend of solid polymers is free of glass microspheres and is suitable for preparing molded articles.
Claim 2
Dependent Claim
73 words
A blend comprising (a) 60 to 95 weight percent of a solid methacrylate polymer in which the predominant component is methyl methacrylate, ethyl methacrylate or a mixture thereof; and (b) 5 to 40 weight percent of a solid fluorocarbon copolymer of 60 to 90 weight percent vinylidene fluoride and 10 to 40 weight percent hexafluoropropylene, wherein said blend of solid polymers is free of glass microspheres and is suitable for preparing molded articles.
Claim 3
Dependent Claim
12 words
The blend of claim 1 in which said methacrylate polymer comprises polymethylmethacrylate.
Claim 4
Dependent Claim
16 words
The blend of claim 1 in which said methacrylate polymer is a copolymer of methyl methacrylate.
Claim 5
Dependent Claim
12 words
The blend of claim 1 in the form of a molded article.
Claim 6
Dependent Claim
12 words
The blend of claim 2 in the form of a molded article.
Claim 7
Dependent Claim
12 words
The blend of claim 3 in the form of a molded article.
Claim 8
Dependent Claim
14 words
The molded article of claim 4 which has been cured with a curing agent.
References Cited (Backward Citations)
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |