Sulfonate-functional coating compositions, methods of making the same, and articles therefrom
Assignee3M Innovative Properties Company
InventorsPaul B. Armstrong, Adam J. Meuler, Jon P. Nietfeld
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Abstract
Described herein is a coating composition comprising: (a) a zwitterionic compound comprising (i) sulfonate-functional groups and (ii) alkoxysilane groups and/or silanol-functional groups; (b) an acid-catalyzed hydrolysis product of an alkoxylsilane, wherein the acid-catalyzed hydrolysis product of an alkoxylsilane comprises at least one (i) (RO)(4-a)Si(OH)a where R is a monovalent hydrocarbon group and a is an integer from 1 to 4; or (ii) an alkanol silicate acid oligomer; (c) a water-miscible organic solvent; and (d) water, along with articles thereof and methods of making the same.
Claims15
A coating composition consisting of
- (a) a zwitterionic compound comprising (i) sulfonate-functional groups and (ii) alkoxysilane groups and/or silanol-functional groups;
- (b) an acid-catalyzed hydrolysis product of an alkoxysilane and a weak acid, wherein the acid-catalyzed hydrolysis product of an alkoxysilane comprises at least one (i)(RO)(4-a)Si(OH)a where R is a monovalent hydrocarbon group and a is an integer from 1 to 4;
- or (ii) an alkanol silicate acid oligomer;
- (c) a water-miscible organic solvent;
- (d) water, and optionally a surfactant.
An article comprising a substrate with a coating layer thereon, wherein the coating layer is preparable by combining the components consisting of:
- (a) a zwitterionic compound comprising (i) sulfonate-functional groups and (ii) alkoxysilane groups and/or silanol-functional groups;
- (b) an acid-catalyzed hydrolysis product of an alkoxysilane, wherein the acid-catalyzed hydrolysis product of an alkoxysilane is derived from an alkoxysilane and a weak acid and wherein the acid-catalyzed hydrolysis product of an alkoxysilane comprises at least one (i) (RO)(4-a)Si(OH)a where R is a monovalent hydrocarbon group and a is an integer from 1 to 4;
- or (ii) an alkanol silicate acid oligomer;
- (c) a water-miscible organic solvent;
- and (d) water.
A method comprising:
- contacting a coating composition consisting of (a) an acid-catalyzed hydrolysis product of an alkoxysilane with (b) a zwitterionic compound, wherein the zwitterionic compound comprises (i) sulfonate-functional groups and (ii) alkoxysilane groups and/or silanol-functional groups;
- (c) a water-miscible organic solvent;
- and (d) water to form a coating composition, wherein the acid-catalyzed hydrolysis product of an alkoxysilane is derived from an alkoxysilane and a weak acid.
Dependencies are inferred from the claim text.