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US4968828A
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Fluorine-Containing organosilicon compound
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1989-10-20
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Granted: 1990-11-06
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Expires: 2009-10-20
Abstract
Abstract A fluorine-containing organosilicon compound represented by the following general formula: <IMAGE> wherein Rf represents a perfluoroalkyl group or a perfluoroalkyl ether group, and m and n are each an integer of 0 or 1. This fluorine-containing organic silicon compound is useful as a modifier for improving properties of various materials, such as heat resistance, chemical resistance and surface properties.
Inventors
- 👤 Yasushi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:24
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
35 words
A fluorine-containing organosilicon compound represented by the following general formula (I): wherein R f represents a perfluoroalkyl group or a perfluoroalkyl ether group, and m and n are each an integer of 0 or 1.
Claim 2
Dependent Claim
35 words
A fluorine-containing organosilicon compound represented by the following general formula (I): wherein R f represents a perfluoroalkyl group or a perfluoroalkyl ether group, and m and n are each an integer of 0 or 1.
Claim 3
Dependent Claim
26 words
The fluorine-containing organosilicon compound according to claim 1, wherein R f in the general formula (I) is a perfluoroalkyl group having 4 to 10 carbon atoms.
Claim 4
Dependent Claim
35 words
The fluorine-containing organosilicon compound according to claim 2 which is represented by the following general formula (Ia) ##STR17## wherein, p is an integer of 4 to 10, and n is the same as defined above.
Claim 5
Dependent Claim
32 words
The fluorine-containing organosilicon compound according to claim 1, wherein R, in the general formula (I) is represented by the following formula (II): ##STR18## where s is an integer of 1 to 4.
Claim 6
Dependent Claim
28 words
A fluorine-containing organosilicon compound according to claim 4 which is represented by the following general formula (Ib): ##STR19## wherein s and n are the same as defined above.
References Cited (Backward Citations)
US3334123A
Cited
US3331813A
Cited
US3422131A
Cited
US4227172A
Cited
USRE31324E
Cited
US4489201A
Cited
US4927950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |