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US5011963A Expired / Lapsed US ⏱️ 0.0 years remaining

Terminal perfluoroalkylsilane compounds

Assignee: Shin-Etsu Chemical Co Ltd
•
Filing: 1989-02-09
•
Granted: 1991-04-30
•
Expires: 2009-02-09
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Abstract

Abstract A terminal perfluoroalkylsilane compound F(CF 2 ) m (CH 2 ) n Si(CH 3 ) p X 3-p (m+n=10 to 32 carbon atoms in fluoroalkyl group) is prepared by a hydrosilylation reaction of a terminal perfluoroalkene compounds F(CF 2 ) m (CH 2 ) 1+q CH═CH 2 (1+q+2=n) with the hydrodiensilane HSi(CH 3 ) p X 3 3-p . The F(CF 2 ) m (CH 2 ) 1+q CH═CH 2 are synthesized by a Grignard's reaction of a Grignard's reagent X 2 Mg(CH 2 ) q CH═CH 2 obtained from a terminal alkenyl halogen compound X 2 (CH 2 ) q CH═CH 2 with a terminal fluoroalkyl halogen compound F(CF 2 ) m (CH 2 ) 1 X 1 . The terminal perfluoroalkylsilane compound has a sufficient lubricating effect and is useful for a coating agent with long and continuous lubricity.

Inventors

  • 👤 Kazufumi Ogawa
  • 👤 Hideharu Tamura
  • 👤 Toshinobu Ishihara
  • 👤 Yasuhisa Tanaka
  • 👤 Mikio Endou

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 08:07
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/18; C07F7/1804

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 47 words
A terminal perfluoroalkylsilane compound having the general formula; F(CF.sub.2).sub.m (CH.sub.2).sub.n Si(CH.sub.3).sub.p X.sub.3-p wherein m, n, and p are each integers; m=1 to 8, m+n=13 to 32, and p=0 to 2; and X is a halogen atom selected from I, Br and Cl, or is an alkoxy group.
Claim 2
Dependent Claim 47 words
A terminal perfluoroalkylsilane compound having the general formula; F(CF.sub.2).sub.m (CH.sub.2).sub.n Si(CH.sub.3).sub.p X.sub.3-p wherein m, n, and p are each integers; m=1 to 8, m+n=13 to 32, and p=0 to 2; and X is a halogen atom selected from I, Br and Cl, or is an alkoxy group.
Claim 3
Dependent Claim 13 words
The terminal perfluoroalkylsilane compound of claim 1 wherein X is methoxy or ethoxy.
Claim 4
Dependent Claim 42 words
A ω-trifluoroalkylsilane compound having the general formula; CF.sub.3 (CH.sub.2).sub.n Si(CH.sub.3).sub.p X.sub.3-p wherein n and p are each integers; n=12 to 31 and p=0 to 2; and X is a halogen atom selected from I, Br and Cl, or is an alkoxy group.
Claim 5
Dependent Claim 42 words
A ω-trifluoroalkylsilane compound having the general formula; CF.sub.3 (CH.sub.2).sub.n Si(CH.sub.3).sub.p X.sub.3-p wherein n and p are each integers; n=12 to 31 and p=0 to 2; and X is a halogen atom selected from I, Br and Cl, or is an alkoxy group.
Claim 6
Dependent Claim 12 words
The ω-trifluoroalkylsilane compound of claim 3 wherein X is methoxy or ethoxy.

References Cited (Backward Citations)

US3188336A Cited
US3012006A Cited
US3015585A Cited
US3298997A Cited
DE2511187A1 Cited
US4384100A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-04-29 1994-10-29 1995-04-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-04-29 1998-10-29 1999-04-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-04-29 2002-10-29 2003-04-30 $7700.00 Window Closed / Lapsed

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