Easy-clean surface and method of making the same
Assignee3M Innovative Properties Company
InventorsJay S. Schlechte, Patrick J. Hager, Jeffrey R. Janssen, Paul D. Graham
Life of this patent
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Abstract
A method of providing an easy-clean, water-sheeting coating on a substrate includes: abrading a surface of a substrate using an abrasive article to provide an abraded surface having a surface roughness R?a#191 in a range of from 100 nm to 3500 nm, contacting a coatable composition with the abraded surface, and removing water from the coatable composition. The coatable composition comprises silica nanoparticles and has a pH of 7.5 or less. A kit including the abrasive article and the coatable composition is also disclosed.
Claims26
1-40. (canceled)
A method of providing an easy-clean, water-sheeting coating on a substrate, the method comprising steps:
- a) abrading at least a portion of a surface of a substrate using an abrasive article to provide an abraded surface having a surface roughness Ra in a range of from 10 nanometers to 3500 nanometers;
- b) contacting a coatable composition with at least a portion of the abraded surface, wherein the coatable composition comprises silica particles, and wherein the silica particles have an average particle size of 100 nm or less, wherein steps a) and b) are carried out simultaneously;
- and
- c) at least partially removing water from the coatable composition to provide the easy-clean, water-sheeting coating on the substrate.
A method of providing an easy-clean, water-sheeting coating on a substrate, the method comprising steps:
- a) abrading at least a portion of a surface of a substrate using an abrasive article to provide an abraded surface having a surface roughness Ra in a range of from 10 nanometers to 3500 nanometers;
- b) contacting a coatable composition with at least a portion of the abraded surface, wherein the coatable composition comprises silica particles, and wherein the silica particles have an average particle size of 100 nm or less, wherein the coatable composition is preparable by combining components:
- i) an aqueous dispersion comprising silica nanoparticles, wherein the aqueous dispersion of silica nanoparticles has a pH of less than 7.5, and wherein the silica nanoparticles have an average particle diameter of 40 nanometers or less;
- ii) alkoxysilane oligomer;
- and
- iii) silane coupling agent;
- and
- c) at least partially removing water from the coatable composition to provide the easy-clean, water-sheeting coating on the substrate.
A method of providing an easy-clean, water-sheeting coating on a substrate, the method comprising steps:
- a) abrading at least a portion of a surface of a substrate using an abrasive article to provide an abraded surface having a surface roughness Ra in a range of from 10 nanometers to 3500 nanometers;
- b) contacting a coatable composition with at least a portion of the abraded surface, wherein based on the total weight of components a) to e), the coatable composition comprises:
- a) 0.5 to 99 weight percent of water;
- b) 0.1 to 20 weight percent of silica nanoparticles having an average particle diameter of 40 nm or less;
- c) 0 to 20 weight percent of silica nanoparticles having an average particle diameter of 50 nm or more, wherein the sum of b) and c) is 0.1 to 20 weight percent;
- d) a sufficient amount of an acid having a pKa of <3.5 to reduce the pH to less than 5;
- and
- e) 0 to 20 percent by weight of a tetraalkoxysilane, relative to the sum of b) and c);
- and
- c) at least partially removing the water from the coatable composition to provide the easy-clean, water-sheeting coating on the substrate.
A kit comprising:
- an abrasive article comprising abrasive particles secured to a backing by a binder;
- and
- a coatable composition comprising silica particles, and wherein the silica particles have an average particle size of 100 nm or less.
Dependencies are inferred from the claim text.