US4314043A
Expired / Lapsed
US
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Fluorine-containing elastomers
Assignee: AGC Inc
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Filing: 1980-08-01
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Granted: 1982-02-02
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Expires: 2000-08-01
Abstract
Abstract Fluorine-containing elastomers comprise the grafted copolymer havig rubber-like elasticity and having chemical linkages at the reactive sites of fluorine-containing polymeric segments and organopolysiloxane segments.
Inventors
- 👤 Gen Kojima
- 👤 Masayuki Tamura
- 👤 Michio Hisasue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/442; C08L; C08L83/00; C08L83/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
56 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages at the reactive sites of fluorine-containing polymeric segments and organopolysiloxane segments, wherein the fluorine-containing polymeric segments consist of two or more chemically different monomeric units at least one of which being a fluorine-containing olefinic unit, said siloxane segments containing amino groups reactive sites.
Claim 2
Dependent Claim
56 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages at the reactive sites of fluorine-containing polymeric segments and organopolysiloxane segments, wherein the fluorine-containing polymeric segments consist of two or more chemically different monomeric units at least one of which being a fluorine-containing olefinic unit, said siloxane segments containing amino groups reactive sites.
Claim 3
Dependent Claim
22 words
Fluorine-containing elastomers according to claim 1 wherein a number average degree of polymerization of fluorine-containing polymeric segments range from 50 to 10,000.
Claim 4
Dependent Claim
20 words
Fluorine-containing elastomers according to claim 1 wherein the average degree of polymerization of organopolysiloxane segments range from 50 to 50,000.
Claim 5
Dependent Claim
17 words
Fluorine-containing elastomers according to claim 1 wherein fluorine-containing polymeric segments comprise the copolymer of tetrafluoroethylene and propylene.
Claim 6
Dependent Claim
18 words
Fluorine-containing elastomers according to claim 1 wherein Fluorine-containing polymeric segments comprise the copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 7
Dependent Claim
18 words
Fluorine-containing elastomers according to claim 1 wherein Fluorine-containing polymeric segments comprise the copolymer of tetrafluoroethylene and perfluoroalkyl perfluorovinylether.
Claim 8
Dependent Claim
21 words
Fluorine-containing elastomers according to any of claim 1 or claim 3 wherein organopolysiloxane segments consist of the polymer of dimethyl siloxane.
Claim 9
Dependent Claim
28 words
Fluorine-containing elastomers according to claim 1 wherein 100 parts by weight of fluorine-containing polymeric segments are chemically grafted to 1 to 2000 parts by weight of organopolysiloxane segments.
Claim 10
Dependent Claim
52 words
Fluorine-containing elastomers according to claim 1 or claim 4 wherein fluorine-containing polymeric segments comprise the copolymer of tetrafluoroethylene and propylene, and glycidyl vinylether as reactive sites, and that organopolysiloxane is selected from the group consisting of either polymer of dimethyl siloxane or polymers of trifluoropropyl siloxane containing amino groups as reactive sites.
Claim 11
Dependent Claim
25 words
Fluorine-containing elastomers according to claim 9 wherein a side chain containing amino group in organopolysiloxane is selected from the group consisting of aminopropyl, N-aminoethylaminopropyl, N-cylohexylaminopropyl.
Claim 12
Dependent Claim
17 words
Fluorine-containing elastomers according to claim 1 or claim 3 wherein organopolysiloxane is the polymer of methyl trifluorpropylsiloxane.
Claim 13
Dependent Claim
33 words
Fluorine-containing elastomer according to claim 1 wherein both of fluorine-containing polymeric segments and organopolysiolxane segments contains reactive sites, and then the graft copolymer is obtained by the chemical reaction of the reactive sites.
Claim 14
Dependent Claim
81 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages at the reactive sites of fluorine-containing polymeric segments and organopolysiloxane segments, wherein the fluorine-containing polymeric segments consist of two or more chemically different monomeric units at least one of which being a fluorine-containing olefinic unit, said fluorine-containing polymeric segments containing epoxy, carboxyl or chloroethyl groups reactive sites and said siloxane segments containing amino or carboxyl groups reactive sites, with the proviso that the two chosen groups are coreactive.
Claim 15
Dependent Claim
81 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages at the reactive sites of fluorine-containing polymeric segments and organopolysiloxane segments, wherein the fluorine-containing polymeric segments consist of two or more chemically different monomeric units at least one of which being a fluorine-containing olefinic unit, said fluorine-containing polymeric segments containing epoxy, carboxyl or chloroethyl groups reactive sites and said siloxane segments containing amino or carboxyl groups reactive sites, with the proviso that the two chosen groups are coreactive.
Claim 16
Dependent Claim
68 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages of fluorine-containing polymeric segments and organopolysiloxane segments at reactive sites of said segments, wherein the fluorine-containing polymeric segments consist of two or more different units at least one of which being a fluorine-contaning olefinic unit, said fluorine-containing polymeric segments containing carboxyl or amino groups reactive sites and said siloxane segments containing epoxy groups reactive sites.
Claim 17
Dependent Claim
68 words
Fluorine-containing elastomers comprising a grafted copolymer having rubber-like elasticity and having chemical linkages of fluorine-containing polymeric segments and organopolysiloxane segments at reactive sites of said segments, wherein the fluorine-containing polymeric segments consist of two or more different units at least one of which being a fluorine-contaning olefinic unit, said fluorine-containing polymeric segments containing carboxyl or amino groups reactive sites and said siloxane segments containing epoxy groups reactive sites.
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) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |