US4645799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable composition of elastomeric vinylidene fluoride copolymer
Assignee: AGC Inc
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Filing: 1985-10-17
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Granted: 1987-02-24
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Expires: 2005-10-17
Abstract
Abstract A curable composition comprising an elastomeric vinylidene fluoride copolymer, an organic peroxide and a vulcanization accelerator, characterized in that said copolymer contains unsaturated bonds introduced by reacting an untreated elastomeric vinylidene fluoride copolymer dispersed in an aqueous medium, with an aqueous alkaline solution containing an onium compound.
Inventors
- 👤 Hiroshi Wachi
- 👤 Seitoku Kaya
- 👤 Gen Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:28
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/26; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A curable composition comprising an elastomeric vinylidene fluoride copolymer, an organic peroxide and an accelerator selected from the group consisting of polyallyl, divinyl, polybutadiene and methacrylate compounds, characterized in that said copolymer contains unsaturated bonds introduced by reacting at 50°-120° C. an untreated elastomeric vinylidene fluoride coplymer dispersed in an aqueous medium, with an aqueous alkaline solution containing an onium compound selected from the group consisting of quaternary ammonium and quarternary phosphonium compounds.
Claim 2
Dependent Claim
73 words
A curable composition comprising an elastomeric vinylidene fluoride copolymer, an organic peroxide and an accelerator selected from the group consisting of polyallyl, divinyl, polybutadiene and methacrylate compounds, characterized in that said copolymer contains unsaturated bonds introduced by reacting at 50°-120° C. an untreated elastomeric vinylidene fluoride coplymer dispersed in an aqueous medium, with an aqueous alkaline solution containing an onium compound selected from the group consisting of quaternary ammonium and quarternary phosphonium compounds.
Claim 3
Dependent Claim
26 words
The composition according to claim 1, wherein the elastomeric vinylidene fluoride copolymer has a content of vinylidene fluoride units of from 2 to 90 mol %.
Claim 4
Dependent Claim
24 words
The composition according to claim 1, wherein the average particle size of the copolymer dispersed in the aqueous medium is at most 10 mm.
Claim 5
Dependent Claim
28 words
The composition according to claim 1, wherein the amount of the onium compound is at most 30 parts by weight per 100 parts by weight of the copolymer.
Claim 6
Dependent Claim
20 words
The composition according to claim 1, wherein the accelerator is selected from the group consisting of polyallyl compounds and 1,2-polybutadienes.
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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |