Patent US4668406A successfully refreshed from Google Patents.
US4668406A
Expired / Lapsed
US
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Fluorochemical biuret compositions and fibrous substrates treated therewith
Assignee: 3M Co
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Filing: 1984-04-02
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Granted: 1987-05-26
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Expires: 2004-04-02
Abstract
Abstract Fluorochemical biurets containing one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, the radicals and moieties bonded together by hetero atom-containing or organic linking groups are provided. These fluorochemical biurets are useful in the form of aqueous dispersions or emulsions or organic solutions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.
Inventors
- 👤 John C. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:56
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/46; C07C275/58; C07C275/62; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172; Y10T442/2189; Y10T442/2221; Y10T442/2246; Y10T442/2262; Y10T442/227
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
Fluorochemical biuret compositions comprising fluorochemical biuret compounds of mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR32## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that the fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety or that said fluorochemical biuret compounds contain at least three biuret moieties.
Claim 2
Dependent Claim
109 words
Fluorochemical biuret compositions comprising fluorochemical biuret compounds of mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR32## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that the fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety or that said fluorochemical biuret compounds contain at least three biuret moieties.
Claim 3
Dependent Claim
51 words
A fluorochemical composition comprising a blend of the composition of claim 1 and a fluoroaliphatic radical-containing poly(oxyalkylene) having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated carbon atoms and one or more poly(oxyalkylene) moieties, said radicals and moieties bonded together by hetero atom-containing or organic linking groups.
Claim 4
Dependent Claim
18 words
A fiber finish comprising an organic solution or aqueous emulsion of the fluorochemical biuret composition of claim 1.
Claim 5
Dependent Claim
97 words
Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR33## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety.
Claim 6
Dependent Claim
97 words
Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR33## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain one or more organic radicals having at least one acid or amino moiety or are salts formed from the compounds containing said acid or amino moiety.
Claim 7
Dependent Claim
76 words
Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR34## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain at least three biuret moieities.
Claim 8
Dependent Claim
76 words
Fluorochemical biuret compositions comprising fluorochemical biuret compound or mixtures of fluorochemical biuret compounds, each biuret compound having one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, ##STR34## said radicals bonded to the biuret moieties by hetero atom-containing or organic linking groups, which linking groups are free of active hydrogen atoms, with the proviso that said fluorochemical biuret compounds contain at least three biuret moieities.
References Cited (Backward Citations)
US3398182A
Cited
US3329661A
Cited
US3462296A
Cited
US3574791A
Cited
US3728151A
Cited
US3458571A
Cited
US4165338A
Cited
US3916053A
Cited
US3896251A
Cited
US4024178A
Cited
US4013627A
Cited
US4029585A
Cited
US4215205A
Cited
US4144367A
Cited
US4190545A
Cited
US4264484A
Cited
US4293713A
Cited
US4325857A
Cited
US4401780A
Cited
US4426476A
Cited
EP0103752A2
Cited
US4504401A
Cited
US4477643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |