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US 6,346,331 B2Granted
Composition for providing an abrasion resistant coating on a substrate
AssigneeSDC Coatings, Inc.
InventorsJanet L. Harvey, Tuan H. Ho, Allen M. Guest, Karl W. Terry, Mark S. Sollberger
Life of this patent
Estimating the term…
Abstract
Compositions having improved sability which, when applied to a variety of substrates and cured, form transparent coatings having superior abrasion resistant properties. The coating compositions are aqueous-organic solvent mixtures containing a mixture of hydrolysis products and partial condensates of an epoxy functional silane and a tetrafunctional silane and a multifunctional compound selected from the group consisting of multifunctional carboxylic acids, multifunctional anhydrides and combinations thereof.
Claims31
An article comprising:
- a substrate;
- and
- a substantially transparent abrasion-resistant coating formed on at least one surface of the substrate, the coating having a Bayer number of at least 5, the coating being formed by curing a coating composition comprising an aqueous-organic solvent mixture applied to the surface of the substrate and wherein the aqueous-organic solvent mixture consisting essentially of:
- from about 10 to about 99.9 weight percent, based on the total solids of the composition, of hydrolysis products and partial condensates of an epoxy functional silane and a tetrafunctional silane wherein the epoxy functional silane is present in a molar ratio to the tetrafunctional silane of from about 0.1:1 to about 5:1 and the solvent component of the aqueous solvent dispersion is compatible with the epoxy functional silane and the tetrafunctional silane;
- from about 0.1 to about 30 weight percent of a multifunctional compound, based on the total solids of the composition, wherein the multifunctional compound is selected from the group consisting of multifunctional carboxylic acids, multifunctional anhydrides and mixtures thereof;
- and
- an amount of water sufficient to hydrolyze the epoxy functional silane and the tetrafunctional silane.
4 more elements
An article comprising:
- a substrate;
- and
- a substantially transparent abrasion-resistant coating formed on at least one surface of the substrate, the coating having a Bayer number of at least 5, the coating being formed by curing a coating composition comprising an aqueous-organic solvent mixture applied to the surface of the substrate, the aqueous-organic solvent mixture consisting essentially of:
- hydrolysis products and partial condensates of an epoxy functional silane, a tetrafunctional silane and a multifunctional compound, wherein the multifunctional compound is selected from the group consisting of multifunctional carboxylic acids, multifunctional anhydrides and combinations thereof and wherein the epoxy functional silane is present in a molar ratio to the tetrafunctional silane of from 0.1:1 to about 5:1;
- and
- an amount of water sufficient to hydrolyze the epoxy functional silane and the tetrafunctional silane.
3 more elements
Dependencies are inferred from the claim text.