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EP0675128A1
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Method for preparation of stable water-borne silane compositions
Assignee: Sivento Inc
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Filing: 1994-03-31
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Granted: —
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Expires: 2014-03-31
Abstract
Abstract A method for forming stable, water-borne silane compositions comprising combining a solution stabilizing agent with a water insoluble silane, adding a second agent to remove alkoxy groups from the water insoluble silane, and removing alcohol which is produced during the previous steps. The molar ratio of the solution stabilizing agent to the water insoluble silane is at least about 2.5 to 1.
Inventors
- 👤 James R. Steinmetz
- 👤 Barry C. Arkles
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 04:59
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874; C08G77/22; C08G77/26; C08G77/30
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
77 words
A method for forming stable, water-borne silane compositions comprising: (a) combining a solution stabilizing agent with a water insoluble silane which contains alkoxy groups; (b) adding a second agent to cause removal of alkoxy groups from the water insoluble silane; and (c) removing from the mixture alcohol compounds produced during step (b); wherein the solution stabilizing agent and the second agent are present in sufficient quantity to react all the alkoxy groups of the water insoluble silane.
Claim 2
Dependent Claim
23 words
The method of claim 1 further comprising adding water to form an aqueous solution during the time when or after alcohol is removed.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the solution stabilizing agent is selected from the group consisting of water soluble silane and organic moieties which contain hydroxyl groups.
Claim 4
Dependent Claim
22 words
The method of claim 3 wherein the water soluble silane is selected from the group consisting of aminofunctional silane and phosphatofunctional silane.
Claim 5
Dependent Claim
22 words
The method of claim 3 wherein the water soluble silane is selected from the group consisting of aminopropyltriethoxysilane, trimethoxysilylpropyldiethylenetriamine and N-(2-aminoethyl)-3 aminopropyltrimethoxysilane.
Claim 6
Dependent Claim
13 words
The method of claim 4 or 5 wherein the second agent is water.
Claim 7
Dependent Claim
26 words
The method of claim 6 wherein the molar ratio of the water soluble silane, the water insoluble silane and water is about 1.0:0.4:11 to about 1.0:0.4:148.
Claim 8
Dependent Claim
12 words
The method of claim 6 further comprising adding water during alcohol removal.
Claim 9
Dependent Claim
26 words
The method of claim 3 wherein the organic moiety containing hydroxyl groups is selected from the group consisting of diethylene glycol, polyethylene glycol and dipropylene glycol.
Claim 10
Dependent Claim
13 words
The method of claim 9 wherein the second agent is a transesterification catalyst.
Claim 11
Dependent Claim
21 words
The method of claim 10 wherein the transesterification catalyst is selected from the group consisting of alkyl titanates and tin compounds.
Claim 12
Dependent Claim
26 words
The method of claim 10 wherein the molar ratio of the organic moiety containing hydroxyl groups to the water insoluble silane is about 3.0:1.0 to 6.0:1.0.
Claim 13
Dependent Claim
12 words
The method of claim 12 further comprising adding water after alcohol removal.
Claim 14
Independent Claim
90 words
A method for forming silane compositions which are stable in aqueous solutions, comprising the steps of: (a) reacting a water soluble silane, a water insoluble silane and water to form a product having active silanol groups; and (b) removing alcohol formed as a result of the reaction of step (a); where the water soluble silane, the water insoluble silane and water which are reacted in step (a) are present in a molar ratio of between about 1.0:0.3:11 to about 1.0:0.4:148 to ensure that the water insoluble silane is completely hydrolyzed.
Claim 15
Dependent Claim
15 words
The method of claim 14 wherein water is added to the solution during alcohol removal.
Claim 16
Dependent Claim
22 words
The method of claim 14 wherein the water soluble silane is chosen from the group consisting of aminofunctional silane and phosphatofunctional silane.
Claim 17
Dependent Claim
21 words
The method of claim 14 wherein the water soluble silane is selected from the group consisting of aminopropyltriethoxysilane, trimethoxysilylpropyldiethylenetriamine and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.
Claim 18
Dependent Claim
29 words
The method of claim 14 wherein the water insoluble silane has an organo group selected from the group consisting of amine, epoxy, mercapto, methacrylate, vinyl, alkyl and combinations thereof.
Claim 19
Dependent Claim
29 words
The method of claim 14 wherein the water soluble silane is aminopropyltriethoxysilane and the water insoluble silane is selected from the group consisting of methyltriethoxysilane, vinyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and 3-methacryloxypropyltrimethoxysilane.
Claim 20
Dependent Claim
11 words
The method of claim 14 wherein an antifoam additive is added.
Claim 21
Independent Claim
84 words
A method for forming silane compositions which are stable in aqueous solutions, comprising the steps of: (a) reacting an organic moiety which contains hydroxyl groups and a water insoluble silane in the presence of an effective amount of a transesterification catalyst; and (b) removing alcohol formed as a result of the reaction of step (a); where the organic moiety which contains hydroxyl groups and the water insoluble silane which are reacted in step (a) are in a molar ratio of at least about 1.5:1.0.
Claim 22
Dependent Claim
16 words
The method of claim 21 wherein water is added to the reaction product after alcohol removal.
Claim 23
Dependent Claim
27 words
The method of claim 21 wherein the organic moiety which contains hydroxyl groups is selected from the group consisting of diethylene glycol, polyethylene glycol and dipropylene glycol.
Claim 24
Dependent Claim
22 words
The method of claim 21 wherein the water insoluble silane is selected from the group consisting of methyltriethoxysilane, vinyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and 3-methacryloxypropyltrimethoxysilane.
Claim 25
Dependent Claim
21 words
The method of claim 21 wherein the transesterification catalyst is selected from the group consisting of alkyl titanates and tin compounds.
References Cited (Backward Citations)
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