US4267213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonato-organosilanol compounds and aqueous solutions thereof
Assignee: 3M Co
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Filing: 1979-10-10
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Granted: 1981-05-12
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Expires: 1999-10-10
Abstract
Abstract Sulfonato-organosilanol compounds and aqueous solutions and compositions thereof are provided which have at least one sulfonato-organic substituent therein. The weight percentage of oxygen in the compounds is at least about 30% and the weight percentage of silicon in the compounds is not greater than about 15%, these percentages being taken with reference to the water-free acid form of the compounds. Hydrophilic siliceous surfaces and processes for imparting hydrophilicity to such surfaces are also provided.
Inventors
- 👤 Boyd R. Beck
- 👤 Frank T. Sher
- 👤 George V. D. Tiers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:09
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836; C03; C03C; C03C17/00; C03C17/28; C03C17/30; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C04B41/4927; C04B41/4938; C04B41/4944; C04B41/495; C04B41/4961; C04B41/4966; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3081; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/90; C04B2111/00; C04B2111/00439
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
A process for imparting hydrophilicity to a substrate having a siliceous surface said process comprising the steps of: (a) contacting said surface with an aqueous solution comprising a sulfonato-organosilanol compound having at least one sulfonato-organic substituent, wherein the weight percentage of oxygen in said compound is at least about 30%, and the weight percentage of silicon in said compound is not greater than about 15%, said percentages being taken with reference to the water-free acid form of said compound, and (b) drying said solution on said surface.
Claim 2
Dependent Claim
87 words
A process for imparting hydrophilicity to a substrate having a siliceous surface said process comprising the steps of: (a) contacting said surface with an aqueous solution comprising a sulfonato-organosilanol compound having at least one sulfonato-organic substituent, wherein the weight percentage of oxygen in said compound is at least about 30%, and the weight percentage of silicon in said compound is not greater than about 15%, said percentages being taken with reference to the water-free acid form of said compound, and (b) drying said solution on said surface.
Claim 3
Dependent Claim
35 words
A process in accordance with claim 1 wherein there is further included the step of treating said substrate with an abrasive material immediately prior to or simultaneously with contacting said surface with said aqueous solution.
Claim 4
Dependent Claim
17 words
A process in accordance with claim 2, wherein said surface is selected from glass and glazed ceramics.
Claim 5
Dependent Claim
29 words
A process in accordance with claim 1 wherein said surface comprises polymeric and non-polymeric materials having thereon a layer of --SiO x -- wherein x is 1 to 2.
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) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |