Claims
- 1. An aqueous coating solution comprising:
- (a) a water soluble organosilance oligomer prepared by dissolving in water an alkoxy silane comprising an alkoxy shane addition product at least two reactants wherein:
- (i) the first reactant is at least one 3-glycidoxypropylalkoxysilane and
- (ii) the second reactant is at least one second hydroxylalkyl amine,
- wherein the alkoxy silane addition product has the formula: ##STR4## wherein at least one of R.sup.1 or R.sup.2 is a hydroxyalkyl group having 2-8 carbon atoms, and R.sup.1 and R.sup.2 can each be different or the same;
- R.sup.3 is an alkoxy group having 1-4 carbon atoms; and
- R.sup.4 and R.sup.5 can each be an alkyl group having 1-4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, and
- (iii) optionally, a third reactant, wherein the reactant is an alkoxysilane different than 3-glycidoxypropylalkoxysilane; and
- (b) a colloidal dispersion having a pH greater than 7.
- 2. The aqueous coating solution according to claim 1 wherein the colloidal dispersion comprises colloidal silica.
- 3. The aqueous coating solution according to claim 1 wherein the addition product further comprises a fourth reactant, wherein the fourth reactant comprises one or more secondary amines different than the secondary hydroxyalkyl amine of the second reactant,
- 4. The aqueous coating according to claim 1 further comprising a third component, wherein the third component (c) is a surfactant.
- 5. The aqueous coating solution according to claim 1 wherein the alkoxysilane is selected from the group consisting of methyltrimethoxy silane, dimethyldiahyoxy silane, methacryloypropyl trimethoxy silane and addition products of dialkylamine and glycidoxyltrimethoxysilane.
Parent Case Info
This is a division of application Ser. No. 08/138,810 filed Oct. 19, 1993 now U.S. Pat. No. 5,464,900.
US Referenced Citations (28)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0301827A2 |
Feb 1989 |
EPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
138810 |
Oct 1993 |
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