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Patent US4324839A successfully refreshed from Google Patents.
US4324839A
Expired / Lapsed
US
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Silicone resin coating composition
Assignee: General Electric Co
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Filing: 1981-03-09
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Granted: 1982-04-13
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Expires: 2001-03-09
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 amount of a polysiloxane polyether copolymer added thereto.
Inventors
- 👤 Robert B. Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:37
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
136 words
A solid substrate having at least one surface coated with an improved 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, said composition having a pH of from 7.1 to about 7.8, wherein the improvement comprises the intimate admixture of a small amount effective to control flow of a polysiloxane polyether copolymer with said composition.
Claim 2
Dependent Claim
136 words
A solid substrate having at least one surface coated with an improved 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, said composition having a pH of from 7.1 to about 7.8, wherein the improvement comprises the intimate admixture of a small amount effective to control flow of a polysiloxane polyether copolymer with said composition.
Claim 3
Dependent Claim
81 words
A solid substrate having at least one surface coated with an improved aqueous coating composition as defined in claim 1 wherein said polysiloxane polyether copolymer has the structural formula: ##STR4## wherein R and R' are monovalent hydrocarbon radicals; R" is a lower alkyl radical, a has a value of at least 2; b has a value of from 2 to 3, inclusive, n has a value of from 2 to 4, inclusive, and x has a value of at least 5.
Claim 4
Dependent Claim
18 words
An article as defined in claim 2 wherein the solid substrate is comprised of a synthetic organic polymer.
Claim 5
Dependent Claim
14 words
An article as defined in claim 2 wherein said solid substrate is a metal.
Claim 6
Dependent Claim
20 words
An article as defined in claim 2 wherein said solid substrate is a synthetic organic polymer having a metallized surface.
Claim 7
Dependent Claim
13 words
An article as defined in claim 3 wherein the polymeric substrate is transparent.
Claim 8
Dependent Claim
13 words
An article as defined in claim 3 wherein said polymer is a polycarbonate.
Claim 9
Dependent Claim
12 words
An article as defined in claim 7 wherein said polycarbonate is transparent.
Claim 10
Dependent Claim
15 words
An article as defined in claim 7 wherein said polycarbonate is a transparent poly(bisphenol-A carbonate).
Claim 11
Dependent Claim
22 words
An article as defined in claim 1 wherein the aqueous coating composition has been cured on said surface of said solid substrate.
Claim 12
Dependent Claim
22 words
An article as defined in claim 2 wherein the aqueous coating composition has been cured on said surface of said solid substrate.
Claim 13
Dependent Claim
32 words
An article as defined in claim 1 wherein said surface of said solid substrate has been primed with a primer composition prior to having been coated with said improved aqueous coating composition.
Claim 14
Dependent Claim
16 words
An article as defined in claim 12 wherein said primer composition comprises a thermosetting acrylic emulsion.
Claim 15
Dependent Claim
35 words
An article as defined in claim 2 wherein said surface of said solid substrate has been primed with a primer composition prior to having been coated with the improved aqueous coating composition of claim 1.
Claim 16
Dependent Claim
16 words
An article as defined in claim 14 wherein said primer composition comprises a thermosetting acrylic emulsion.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |