US4434103A
Expired / Lapsed
US
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Substituted silicon-oxygen-aluminum oligomers and preparation thereof
Assignee: General Electric Co
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Filing: 1981-09-18
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Granted: 1984-02-28
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Expires: 2001-09-18
Abstract
Abstract A method is provided for applying aluminosilicate coatings onto a variety of substrates, for example, metals, metal alloys and ceramics. Certain organic solvent-soluble, organic substituted, silicon-oxygen-aluminum oligomers and method for preparing them also are provided.
Inventors
- 👤 Leonard V. Interrante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:33
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C04B41/45; C04B41/50; C04B41/5025; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A method for making organic solvent soluble aluminum-oxygen-silicon oligomers useful for providing an aluminosilicate coating on a ceramic, metal or metal alloy substrate which comprises (A) hydrolyzing a chelated aluminum alkoxide of the formula, ##STR10## with water using M moles of chelated aluminum alkoxide, where M has a value of 2 to 5, per M-1 moles of water, to produce low molecular weight alkoxy-terminated aluminum-oxygen oligomer, (B) coreacting the low molecular weight alkoxy terminated aluminum oxygen oligomer of (A) with a sufficient amount of a difunctional organosilane of the formula, ##STR11## to provide at least one X radical per alkoxy radical of the chelated aluminum oxide oligomer of (A), and (C) effecting the separation of volatiles from the resulting mixture, where Y is a monovalent C.sub.(1-13) hydrocarbon radical, R is selected from polyvalent organic radicals, R 1 and R 2 are selected from monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals selected from the group consisting of cyanoethyl and trifluoropropyl, and X is an acyloxy, hydroxy or halogen radical.
Claim 2
Independent Claim
169 words
A method for making organic solvent soluble aluminum-oxygen-silicon oligomers useful for providing an aluminosilicate coating on a ceramic, metal or metal alloy substrate which comprises (A) hydrolyzing a chelated aluminum alkoxide of the formula, ##STR10## with water using M moles of chelated aluminum alkoxide, where M has a value of 2 to 5, per M-1 moles of water, to produce low molecular weight alkoxy-terminated aluminum-oxygen oligomer, (B) coreacting the low molecular weight alkoxy terminated aluminum oxygen oligomer of (A) with a sufficient amount of a difunctional organosilane of the formula, ##STR11## to provide at least one X radical per alkoxy radical of the chelated aluminum oxide oligomer of (A), and (C) effecting the separation of volatiles from the resulting mixture, where Y is a monovalent C.sub.(1-13) hydrocarbon radical, R is selected from polyvalent organic radicals, R 1 and R 2 are selected from monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals selected from the group consisting of cyanoethyl and trifluoropropyl, and X is an acyloxy, hydroxy or halogen radical.
Claim 3
Dependent Claim
13 words
A method in accordance with claim 1, where the difunctional organosilane is dimethyldiacetoxysilane.
Claim 4
Dependent Claim
37 words
An aluminum-oxygen-silicon oligomer made in accordance with the method of claim 1 having the formula, ##STR12## where a has an average value of 2 to 4 inclusive, and b has a value equal to at least one.
Claim 5
Dependent Claim
82 words
An aluminum-oxygen-silicon oligomer made by the methods of claim 1 having the formula, ##STR13## where Y is a monovalent C.sub.(1-13) hydrocarbon radical, R is selected from divalent organic radicals, R 1 and R 2 are selected from monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals selected from the group consisting of cyanoethyl and trifluoropropyl, X is an acyloxy, hydroxy or halogen radical, a has an average value of 2 to 4 inclusive, and b has a value equal to at least one.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |