Protective coating for window glass
AssigneeDow Global Technologies LLC
InventorsKiran Baikerikar, Syed Z. Mahdi
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Abstract
The invention is a composition comprising: a) one or more film forming resins having at least one functional group capable of polymerization; b) one or more reactive diluents capable of reacting with the film forming resin; c) one or more silicon, titanium, zirconium, aluminum or metal containing compounds capable of promoting adhesion of the composition to glass; d) one or more fillers capable of imparting abrasion resistance to the composition when cured; and e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety. The composition of the invention is useful as a frit on the window of a vehicle.
Claims17
An article comprising glass or plastic having an abrasion resistant coating deposited thereon having a cured coating disposed on a portion of one or more surfaces of the glass or coated plastic wherein the coating exhibits a light transmission of about 1 percent or less and an universal hardness of about 100 N/mm2 or greater;
- wherein the cured coating is based on a composition comprising:
- a) one or more film forming resins having at least one functional group capable of polymerization;
- b) one or more reactive diluents capable of reacting with the film forming resin;
- c) one or more compounds capable of promoting adhesion of the composition to glass comprising a Michael addition product of a siloxane further containing one or more hydrogen containing functional moieties with a compound having two or more acrylate groups wherein the addition products have four or greater siloxy groups and at least one acrylate group;
- d) one or more fillers capable of imparting abrasion resistance to the composition when polymerized;
- and
- e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety.
A method for coating glass or abrasion resistant coated plastic window comprising applying a coating to the periphery of (a) glass or abrasion resistant coated plastic window and (b) exposing the coated window to conditions such that the coating cures:
- wherein the cured coating exhibits a light transmission of about 1 percent or less and an universal hardness of about 100 N/mm2 or greater;
- wherein the coating comprises:
- a) one or more film forming resins having at least one functional group capable of polymerization;
- b) one or more reactive diluents capable of reacting with the film forming resin;
- c) one or more compounds capable of promoting adhesion of the composition to glass comprising a Michael addition product of a siloxane further containing one or more hydrogen containing functional moieties with a compound having two or more acrylate groups wherein the addition products have four or greater siloxy groups and at least one acrylate group;
- d) one or more fillers capable of imparting abrasion resistance to the composition when polymerized;
- and
- e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety.
A method for bonding a window into a structure which comprises applying an adhesive having isocyanalc. siloxy or both isocyanate and siloxy functionality to the surface of a cured coating disposed on the periphery of the window;
- (i) contacting the window with a window frame of a structure wherein the adhesive is located between the window and the window frame and (ii) allowing the adhesive to cure;
- wherein the cured coating exhibits a light transmission of about 1 percent or less and an universal hardness of about 100 N/mm2 or greater;
- wherein the coating comprises:
- a) one or more film forming resins having at least one functional group capable of polymerization;
- b) one or more reactive diluents capable of reacting with the film forming resin;
- c) one or more compounds capable of promoiing adhesion of the composition to glass comprising Michael addition products;
- d) one or more fillers capable of imparling abrasion resistance lo the composition when polymerized;
- and
- e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety.
Dependencies are inferred from the claim text.