US4268598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing powder composition containing fluoroaliphatic sulfonamido surface active agent
Assignee: 3M Co
•
Filing: 1979-10-15
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Granted: 1981-05-19
•
Expires: 1999-10-15
Abstract
Abstract A developing powder composition is provided that comprises a mixture of from about 99.5 to 95% by weight of toner powder particles and correpondingly from about 0.5 to 5% by weight of a fluoroaliphatic sulfonamido surface active material.
Inventors
- 👤 Ronald P. Leseman
- 👤 George A. Kurhajec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G9/09766
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
125 words
A developing powder composition that comprises a mixture of from about 99.75 to 95% by weight of toner powder particles and correspondingly from about 0.25 to 5% by weight of a fluoroaliphatic sulfonamido surface active material of the formula [R.sub.f Q].sub.m A wherein R f is a fluoroaliphatic radical; Q is a divalent sulfonamido-containing group through which R f and A are joined together; A is a terminal group selected from the group aryl, alkenylene, ##STR22## wherein R 4 is an oxalkylene group having from 1 to 10 carbon atoms, an ester group, or sulfate group; M 1 and M 2 are selected from hydrogen, alkyl having from 1 to 6 carbon atoms and salt-forming cations; and m is equal to the valence of A.
Claim 2
Dependent Claim
125 words
A developing powder composition that comprises a mixture of from about 99.75 to 95% by weight of toner powder particles and correspondingly from about 0.25 to 5% by weight of a fluoroaliphatic sulfonamido surface active material of the formula [R.sub.f Q].sub.m A wherein R f is a fluoroaliphatic radical; Q is a divalent sulfonamido-containing group through which R f and A are joined together; A is a terminal group selected from the group aryl, alkenylene, ##STR22## wherein R 4 is an oxalkylene group having from 1 to 10 carbon atoms, an ester group, or sulfate group; M 1 and M 2 are selected from hydrogen, alkyl having from 1 to 6 carbon atoms and salt-forming cations; and m is equal to the valence of A.
Claim 3
Dependent Claim
40 words
A developing powder composition according to claim 1 wherein said surface active material has the formula ##STR23## wherein R 1 is a lower alkyl group containing from 1 to 8 carbon atoms; and R 2 is a divalent hydrocarbyl group.
Claim 4
Dependent Claim
44 words
A developing powder composition according to claim 2 wherein said R 2 is selected from the group alkylene containing from 1 to 16 carbon atoms, ##STR24## and --R 3 O--, wherein R 3 is an alkylene group containing from 1 to 10 carbon atoms.
Claim 5
Dependent Claim
23 words
A developing powder composition according to claim 3 wherein said R 2 is an alkylene group containing from 1 to 16 carbon atoms.
Claim 6
Dependent Claim
36 words
A developing powder composition according to claim 4 wherein A is ##STR25## wherein M 1 and M 2 are each selected from hydrogen, alkyl groups containing from 1 to 6 carbon atoms, and salt forming cations.
Claim 7
Dependent Claim
12 words
A developing powder composition according to claim 5 of the formula ##STR26##
Claim 8
Dependent Claim
32 words
A developing powder composition according to claim 4 wherein A is ##STR27## wherein M 1 is selected from hydrogen, alkyl groups containing from 1 to 6 carbon atoms, and salt forming cations.
Claim 9
Dependent Claim
12 words
A developing powder composition according to claim 7 of the formula ##STR28##
Claim 10
Dependent Claim
28 words
A developing powder composition according to claim 4 wherein A is --R 4 H wherein R 4 is an oxalkylene group having from 1 to 10 carbon atoms.
Claim 11
Dependent Claim
12 words
A developing powder composition according to claim 9 of the formula ##STR29##
Claim 12
Dependent Claim
13 words
A developing powder composition according to claim 3 wherein R 2 is ##STR30##
Claim 13
Dependent Claim
12 words
A developing powder composition according to claim 11 of the formula ##STR31##
Claim 14
Dependent Claim
13 words
A developing powder composition according to claim 3 wherein R 2 is ##STR32##
Claim 15
Dependent Claim
12 words
A developing powder composition according to claim 13 of the formula ##STR33##
Claim 16
Dependent Claim
15 words
A developing powder composition according to claim 3 wherein R 2 is --R 3 O--.
Claim 17
Dependent Claim
32 words
A developing powder composition according to claim 15 wherein A is ##STR34## wherein M 1 is selected from hydrogen, alkyl groups containing from 1 to 6 carbon atoms and salt forming cations.
Claim 18
Dependent Claim
12 words
A developing powder composition according to claim 16 of the formula ##STR35##
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |