US4298655A
Expired / Lapsed
US
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Aqueous silicone resin coating composition and solid substrate coated therewith
Assignee: General Electric Co
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Filing: 1980-07-28
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Granted: 1981-11-03
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Expires: 2000-07-28
Abstract
Abstract An improved silicone resin coating composition is provided, the composition comprising a dispersion of colloidal silica in an aliphatic alcohol-water solution of the partial condensate of a silanol with a small stabilizing amount of a β-dicarbonyl compound added thereto.
Inventors
- 👤 William D. Kray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:03
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
110 words
In an aqueous coating composition comprising a dispersion of colloidal silica in an aliphatic alcohol-water solution of the partial condensate of a silanol of the formula RSi(OH) 3 , wherein R is selected from the group consisting of alkyl having from 1 to 3 carbon atoms and aryl, at least 70 weight percent of the silanol being CH 3 Si(OH) 3 , said composition containing 10 to 50 weight percent solids, said solids consisting essentially of 10 to 70 weight percent colloidal silica and 30 to 90 weight percent of the partial condensate, the improvement comprising the intimate admixture of a small stabilizing of a β-dicarbonyl compound with said composition.
Claim 2
Dependent Claim
110 words
In an aqueous coating composition comprising a dispersion of colloidal silica in an aliphatic alcohol-water solution of the partial condensate of a silanol of the formula RSi(OH) 3 , wherein R is selected from the group consisting of alkyl having from 1 to 3 carbon atoms and aryl, at least 70 weight percent of the silanol being CH 3 Si(OH) 3 , said composition containing 10 to 50 weight percent solids, said solids consisting essentially of 10 to 70 weight percent colloidal silica and 30 to 90 weight percent of the partial condensate, the improvement comprising the intimate admixture of a small stabilizing of a β-dicarbonyl compound with said composition.
Claim 3
Dependent Claim
82 words
An aqueous coating as defined in claim 1 wherein said composition has a pH of from 7.1 to about 7.8 and said β-dicarbonyl compound has the structural formula: ##STR4## wherein R 1 is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms; R 2 is, independently, a monovalent hydrocarbon radical having from 1 to 18 carbon atoms or hydrogen; and R 3 is a monovalent radical selected from hydrocarbon or aliplhatic hydrocarbonoxy each having from 1 to 18 carbon atoms.
Claim 4
Dependent Claim
24 words
An aqueous coating composition as defined in claim 2 wherein R 1 is methyl, R 3 is methyl, and R 2 are each hydrogen.
Claim 5
Dependent Claim
20 words
An aqueous coating composition as defined in claim 2 wherein the aliphatic alcohol is a mixture of methanol and isobutanol.
Claim 6
Dependent Claim
20 words
An aqueous coating composition as defined in claim 2 wherein said partial condensate is of CH 3 Si(OH) 3 .
Claim 7
Dependent Claim
19 words
An aqueous coating composition as defined in claim 2 wherein the pH is from about 7.2 to about 7.8.
Claim 8
Dependent Claim
38 words
An aqueous coating composition as defined in claim 2 wherein the composition contains from about 18 to about 25 weight percent solids consisting essentially of 25-45 weight percent colloidal silica and 55-75 weight percent of the partial condensate.
Claim 9
Dependent Claim
34 words
An aqueous coating composition as defined in claim 1 wherein said β-dicarbonyl compound is present in an amount of from about 2.5 to about 15% by weight of the total solids of the composition.
Claim 10
Dependent Claim
54 words
An aqueous coating composition as defined in claim 3 wherein the composition contains about 20% solids, the partial condensate is of CH 3 Si(OH) 3 , the aliphatic alcohol is a mixture of methanol and isobutanol and said β-dicarbonyl compound is present in an amount of about 4% by weight of the solids content.
Claim 11
Dependent Claim
17 words
A solid substrate having at least one surface coated with the aqueous coating composition of claim 1.
Claim 12
Dependent Claim
17 words
A solid substrate having at least one surface coated with the aqueous coating composition of claim 2.
Claim 13
Dependent Claim
18 words
An article as defined in claim 11 wherein the solid substrate is comprised of a synthetic organic polymer.
Claim 14
Dependent Claim
13 words
An article as defined in claim 12 wherein the polymeric substrate is transparent.
Claim 15
Dependent Claim
13 words
An article as defined in claim 12 wherein said polymer is a polycarbonate.
Claim 16
Dependent Claim
12 words
An article as defined in claim 14 wherein said polycarbonate is transparent.
Claim 17
Dependent Claim
15 words
An article as defined in claim 14 wherein said polycarbonate is a transparent poly(bisphenol-A carbonate).
Claim 18
Dependent Claim
22 words
An article as defined in claim 10 wherein the aqueous coating composition has been cured on said surface of said solid substrate.
Claim 19
Dependent Claim
22 words
An article as defined in claim 11 wherein the aqueous coating composition has been cured on said surface of said solid substrate.
References Cited (Backward Citations)
US3546305A
Cited
US3708225A
Cited
US3887580A
Cited
US3976497A
Cited
US3986997A
Cited
US4177315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |