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Patent US4154617A successfully refreshed from Google Patents.
US4154617A
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US
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Silicon coating compositions and method of production
Assignee: Grow Chemical Corp
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Filing: 1976-11-29
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Granted: 1979-05-15
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Expires: 1996-11-29
Abstract
Abstract Described is a method for producing inorganic silicon containing compositions of improved stability and hardness comprising the steps of:
Inventors
- 👤 William R. Keithler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:30
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/02; C09D5/00; C09D5/08; C09D5/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A process for producing a silicon coating composition of improved stability and hardness comprising the steps: 1. providing a mixture of a tetra alkoxy silicate, wherein the alkoxy groups contain from one to ten carbon atoms or a partial hydrolysate thereof in a solvent which is miscible with water; 2. adding a weak acid to said mixture and maintaining an acidic pH; 3. partially hydrolyzing the mixture by adding water thereto; and 4. adding a strong acid to said mixture to further hydrolyze the mixture.
Claim 2
Dependent Claim
85 words
A process for producing a silicon coating composition of improved stability and hardness comprising the steps: 1. providing a mixture of a tetra alkoxy silicate, wherein the alkoxy groups contain from one to ten carbon atoms or a partial hydrolysate thereof in a solvent which is miscible with water; 2. adding a weak acid to said mixture and maintaining an acidic pH; 3. partially hydrolyzing the mixture by adding water thereto; and 4. adding a strong acid to said mixture to further hydrolyze the mixture.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the weak acid is an organic carboxylic acid having up to 12 carbon atoms.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the strong acid is a mineral acid.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein the amount of water added is less than the stoichiometric amount of water necessary to completely hydrolyze the silicon reactant.
Claim 6
Dependent Claim
23 words
The method of claim 4 wherein the amount of water added is up to 0.95 of the stoichiometric amount required for complete hydrolysis.
Claim 7
Dependent Claim
92 words
A stabilized silicon containing coating composition comprising a water miscible solvent and a hydrolyzed silicate which hydrolysis product is prepared by a two step process, the first step comprising adding a weak acid to a mixture of organo silicon containing composition in a solvent thereof and maintaining the pH acidic; partially hydrolyzing the mixture, and adding a strong acid to said mixture to further hydrolyze said mixture, wherein the organo silicon material is a tetra alkoxy silicate or a partial hydrolysate wherein the alkoxy group contains from one to ten carbon atoms.
Claim 8
Dependent Claim
92 words
A stabilized silicon containing coating composition comprising a water miscible solvent and a hydrolyzed silicate which hydrolysis product is prepared by a two step process, the first step comprising adding a weak acid to a mixture of organo silicon containing composition in a solvent thereof and maintaining the pH acidic; partially hydrolyzing the mixture, and adding a strong acid to said mixture to further hydrolyze said mixture, wherein the organo silicon material is a tetra alkoxy silicate or a partial hydrolysate wherein the alkoxy group contains from one to ten carbon atoms.
Claim 9
Dependent Claim
10 words
The coating composition of claim 6 further containing metallic oxides.
Claim 10
Dependent Claim
10 words
The coating composition of claim 6 further containing glass flakes.
Claim 11
Dependent Claim
10 words
The coating composition of claim 8 further containing particulate zinc.
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) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |