US 4,211,823 A · Tintable coatings and articles having such coatings

Abstract

A tintable coating composition is provided. It includes (A)(1) hydrolysates of silane compounds containing at least one epoxy group and not less than two alkoxy groups which are directly bonded to Si atom in the molecule, and, if necessary, (2) compounds containing silanol and/or siloxane groups in the molecule, and/or epoxy compounds; (B) fine silica particles having an average diameter of from about 1 to about 100 m.mu.; and (C) an aluminum chelate compound having the general formula AlX.sub.n Y.sub.3-n, where X is OL (and L represents a lower alkyl group), Y represents one or more ligands produced from a compound selected from the group consisting of M.sup.1 COCH.sub.2 COM.sup.2 and M.sup.3 COCH.sub.2 COOM.sup.4 where all of M.sup.1, M.sup.2, M.sup.3 and M.sup.4 are lower alkyl groups, and wherein n is an integer comprising 0, 1 or 2. This invention also concerns an article, preferably plastic, coated with said coating composition and having a hard and tintable, scratch-resistant film, which is formed by heating and curing.

Claims19

Dependent claims

A coating composition comprising components A, B, C and D wherein

Component A is:
A hydrolysate of a silane compound containing an epoxy group and not less than two alkoxy groups which are directly bonded to an Si atom in the molecule;
Component B comprises fine particles of silica which particles have an average diameter of about 1 to 100 m.mu., and wherein
Component C comprises an aluminum chelate compound having the formula AlX.sub.n Y.sub.3-n wherein X is OL (wherein L is a lower alkyl group), Y is at least one ligand produced from the group consisting of:
(1) M'COCH.sub.2 COM.sup.2 and (2) M.sup.3 COCH.sub.2 COOM.sup.4
wherein (M', M.sup.2, M.sup.3 and M.sup.4 are lower alkyl groups) and n is 0, 1 or 2, and wherein
Component D comprises a solvent comprising more than about 1 weight percent water, the amount of Component B being about 1 to 500 parts by weight per 100 parts by weight of Component A, and the amount of Component C being about 0.01 to 50 parts by weight per 100 parts by weight of Component A.

4 more elements

A coating composition comprising components A, B, C and D wherein

Component A comprises
(1) A hydrolysate of a silane compound containing an epoxy group and not less than two alkoxy groups which are directly bonded to an Si atom in the molecule, and
(2) at least one compound selected from the group consisting of:
(2.1) A compound containing a silanol and/or siloxane group in the molecule and
(2.2) an epoxy compound, and wherein Component B comprises fine particles of silica which particles have an average diameter of about 1 to 100 m.mu., and wherein Component C comprises an aluminum chelate compound having the formula AlX.sub.n Y.sub.3-n wherein X is OL (wherein L is a lower alkyl group), Y is at least one ligand produced from the group consisting of:
(1) M'COCH.sub.2 COM.sup.2 and (2) M.sup.3 COCH.sub.2 COOM.sup.4 wherein M', M.sup.2, M.sup.3 and M.sup.4 are lower alkyl groups and n is 0, 1 or 2, and wherein Component D comprises a solvent comprising more than about 1 weight percent water, the amount of Component B being about 1 to 500 parts by weight of Component A, the amount of Component C being about 0.01 to 50 parts by weight per 100 parts by weight of Component A, the calculated weight percent of (1) in Component A in film being more than about 10, and the calculated weight percent of the sum of (1) and (2.2) in Component A in film being more than about 30.

3 more elements

Dependencies are inferred from the claim text.

Tintable coatings and articles having such coatings

Life of this patent

Tintable coatings and articles having such coatings

Life of this patent

Abstract

Claims19