US4063958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophobic compositions
Assignee: Wacker Chemie AG
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Filing: 1976-07-01
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Granted: 1977-12-20
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Expires: 1996-07-01
Abstract
Abstract The invention relates to hydrophobic compositions and to a method for preparing hydrophobic compositions by mixing an aqueous suspension of finely divided solids containing dissolved salts of metals with an aqueous solution of alkali metal organosiliconates to form substantially water insoluble metal organosiliconates.
Inventors
- 👤 Michael Roth
- 👤 Erhard Bosch
- 👤 Herbert Gluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/12; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K9/00; C08K9/04; C08K9/06; C09B; C09B67/00; C09B67/006; D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/46; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6436; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
A method for treating finely divided solids to impart hydrophobic properties thereto which comprises coating said finely divided solids with a substantially water insoluble metal organosiliconate by contacting an aqueous solution of finely divided solids containing a dissolved metal salt selected from the class consisting of beryllium, magnesium, calcium, strontium and barium with an aqueous solution of an alkali metal organosiliconate in which 1.0 to 2 equivalents of metal are present per equivalent of alkali metal in the alkali metal organosiliconate to form a coating thereon and thereafter separating the coated finely divided solids from the aqueous medium.
Claim 2
Independent Claim
98 words
A method for treating finely divided solids to impart hydrophobic properties thereto which comprises coating said finely divided solids with a substantially water insoluble metal organosiliconate by contacting an aqueous solution of finely divided solids containing a dissolved metal salt selected from the class consisting of beryllium, magnesium, calcium, strontium and barium with an aqueous solution of an alkali metal organosiliconate in which 1.0 to 2 equivalents of metal are present per equivalent of alkali metal in the alkali metal organosiliconate to form a coating thereon and thereafter separating the coated finely divided solids from the aqueous medium.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the metal salt is calcium chloride.
Claim 4
Dependent Claim
14 words
The coated finely divided solids which are obtained from the process of claim 1.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |