Patent US3663282A successfully refreshed from Google Patents.
US3663282A
Expired / Lapsed
US
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Coating compositions for alkali surfaces
Assignee: General Electric Co
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Filing: 1970-07-01
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Granted: 1972-05-16
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Expires: 1990-07-01
Abstract
Abstract A primer composition for protecting polysiloxane polymers from alkali material comprising 1.0-10.0 percent by weight of (RO)nSiO(4 n/2; 15.0-40.0 percent by weight of (R''O)4Si; 1.010.0% by weight of Ti(OR2)4 or Ti(OR2)x; 1.0-5.0 percent by weight of AND 35-72 PERCENT BY WEIGHT OF A SOLVENT WHEREIN R, R'', R2, R3, R4, and R5 are monovalent hydrocarbon radicals, x is at least 5 and the value of n may vary from 2.25 to 2.67.
Inventors
- 👤 Ronald L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:27
CPC Classifications
C; C09; C09D; C09D183/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
28 words
The composition as set forth in claim 1 wherein the solvent is selected from the class consisting of toluene, xylene, acetone, benzene, lower aliphatic alcohols and mineral spirits.
Claim 2
Dependent Claim
25 words
The composition as set forth in claim 1 wherein the radicals R and R'' are selected from the group consisting of methyl, ethyl and isopropyl.
Claim 3
Dependent Claim
12 words
The composition as set forth in claim 3 wherein R2 represents butyl.
Claim 4
Dependent Claim
19 words
The composition as set forth in claim 1 wherein there is present 2.0-3.0 percent by weight of cerium neodeconoate.
Claim 5
Dependent Claim
19 words
The composition as set forth in claim 5 wherein there is present 20.0-30.0 percent by weight of ethylortho silicate.
Claim 6
Dependent Claim
30 words
The composition as set forth in claim 6 wherein there is present 5.0 to 8.0 percent by weight of the compound selected from the class consisting of Ti(OR2)4 and Ti(OR2)x.
Claim 7
Dependent Claim
19 words
The composition as set forth in claim 1 wherein there is present 1.5-3.0 percent by weight of (RO)nSiO(4 n)/2.
Claim 8
Dependent Claim
154 words
A process for protecting polysiloxane polymers from alkali surfaces comprising coating said alkali surfaces with a composition having therein 1.0-10.0 percent by weight of (RO)nSiO(4 n)/2; 15.0-40.0 percent by weight (R''O)4Si; 1.0-10.0 percent by weight of a compound selected from the group consisting of Ti(OR2)4 and Ti(OR2)x; 1.0-5.0 percent by weight of and 35.0-72.0 percent by weight of an inert solvent wherein R, R'', and R2 represent a radical selected from the group consisting of alkyl; mononuclear and binuclear aryl; halogen-substituted mononuclear and binuclear aryl; nitro-substituted mononuclear and binuclear aryl; alkoxy-substituted mononuclear and binuclear aryl; alkenyl; haloalkyl; nitroalkyl; alkoxyalkyl and polyalkoxyalkyl; cycloalkyl, and alkyl, halogen, alkoxy and nitro-substituted cycloalkyl and cyanoalkyl; and aralkyl of up to 12 carbon atoms; R3, R4, and R5 are selected from the group consisting of alkyl of not more than six carbon atoms; x has a value of at least 5 and n may vary between 2.25 and 2.67.
Claim 9
Dependent Claim
28 words
The process as set forth in claim 9 wherein the solvent is selected from the class consisting of toluene, xylene, benzene, acetone, lower aliphatic alcohols, and mineral spirits.
Claim 10
Dependent Claim
24 words
The process as set forth in claim 9 wherein the radicals R, R'' are selected from the group consisting of methyl, ethyl, and isopropyl.
Claim 11
Dependent Claim
12 words
The process as set forth in claim 11 wherein R2 represents butyl.
Claim 12
Dependent Claim
19 words
The process as set forth in claim 12 wherein there is preseNt 2.0-3.0 percent by weight of cerium neodeconoate.
Claim 13
Dependent Claim
19 words
The process as set forth in claim 13 wherein there is present 20.0-30.0 percent by weight of ethylortho silicate.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |