Patent US3877956A successfully refreshed from Google Patents.
US3877956A
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Stabilization of aqueous solutions from hydrolyzable organosilanes
Assignee: Wacker Chemie AG
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Filing: 1972-07-24
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Granted: 1975-04-15
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Expires: 1992-07-24
Abstract
Abstract Use of carboxylic acids to stabilize aqueous solutions prepared from hydrolyzable organosilanes in which the hydrolyzable groups are derived predominantly from polyvalent alcohols.
Inventors
- 👤 Siegfried Nitzsche
- 👤 Ewald Pirson
- 👤 Michael Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:38
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
20 words
AN AQUEOUS SOLUTION OBTAINED FROM A WATER SOLUBLE HYDROLYZABLE ORGANOSILANE SELECTED FROM THE CLASS CONSISTING OF SILANES OF THE FORMULA
Claim 2
Dependent Claim
20 words
AN AQUEOUS SOLUTION OBTAINED FROM A WATER SOLUBLE HYDROLYZABLE ORGANOSILANE SELECTED FROM THE CLASS CONSISTING OF SILANES OF THE FORMULA
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the monocarboxylic acid is acetic acid.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the monocarboxylic acid is propionic acid.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein the salt forming cation is selected from the group consisting of ammonia and sodium.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein the hydrolyzable organosilane is methyltris(beta-hydroxyethoxy)-silane.
Claim 7
Independent Claim
24 words
A method for stabilizing an aqueous solution obtained from a water-soluble hydrolyzable methyl silane selected from the class consisting of silanes of the formula
Claim 8
Independent Claim
24 words
A method for stabilizing an aqueous solution obtained from a water-soluble hydrolyzable methyl silane selected from the class consisting of silanes of the formula
Claim 9
Dependent Claim
10 words
The process of claim 6 wherein the silane is methyltris(beta-hydroxyethoxy)-silane.
References Cited (Backward Citations)
US2803610A
Cited
US3392130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |