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Fluorine-containing aminosulfonate

Assignee: Kawamura Institute of Chemical Research
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Filing: 1981-09-11
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Granted: 1984-02-14
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Expires: 2001-09-11
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Abstract

Abstract A fluorine-containing aminosulfonate of the general formula Rf-Ql-N(R1)-Q2-N(R2)-Q3-SO3M wherein Rf represents a perfluorinated aliphatic group having 3 to 16 carbon atoms; Q1 represents -CH2-h in which h represents an integer of 1 to 6, -CH2CH2Z-i in which Z represents -O- or -S-, and i represents an integer of 1 to 4, <IMAGE> or a combination of these; Q2 and Q3 are identical or different and each represents -CH2-j in which j represents an integer of 1 to 6, <IMAGE> in which R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or <IMAGE> M represents a hydrogen atom, an alkali metal atom, an alkaline earth methal atom, or -N(H)m(R4)n in which R4 represents an alkyl group having 1 to 3 carbon atoms, and m and n represent 0 or an integer of 1 to 4 provided that m+n=4; R1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; and R2 represents a hydrogen atom, an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms, -Q3SO3M in which Q3 and M are as defined, or -CH2-kCOOM in which M is as defined and k represents an integer of 1 to 4.

Inventors

  • 👤 Yutaka Hashimoto
  • 👤 Masayuki Kamei
  • 👤 Toshihiko Umaba
  • 👤 Tadashi Ito

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 10:36
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/26; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/905; Y10S516/909; Y10S516/91

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 10 words
A fluorine-containing aminosulfonate selected from the group consisting of ##STR29##
Claim 2
Dependent Claim 10 words
A fluorine-containing aminosulfonate selected from the group consisting of ##STR29##
Claim 3
Dependent Claim 7 words
The fluorine-containing aminosulfonate of the formula ##STR30##
Claim 4
Dependent Claim 7 words
The fluorine-containing aminosulfonate of the formula ##STR30##
Claim 5
Dependent Claim 8 words
The fluorine-containing aminosulfonate which has the formula ##STR31##
Claim 6
Dependent Claim 8 words
The fluorine-containing aminosulfonate which has the formula ##STR31##

References Cited (Backward Citations)

US2243437A Cited
US4001285A Cited
US3911056A Cited
US4014926A Cited
US4138345A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-02-13 1987-08-15 1988-02-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-02-13 1991-08-15 1992-02-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-02-13 1995-08-15 1996-02-14 $7700.00 Window Closed / Lapsed

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