Tintable coatings and articles having such coatings

Details Tintable coatings and articles having such coatings Tintable coatings and articles having such coatings

1979-05-11

1980-07-08

Hoffman, James R.

Stock material or miscellaneous articles

Composite

Of polycarbonate

260 292M, 260375B, 427164, 428413, 428447, C08L 8304, B32B 2708, B32B 2730, B32B 2728

Patent

active

042118239

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.

REFERENCES:
patent: 2645629 (1953-07-01), Nitzsche
patent: 3971747 (1976-07-01), Bank et al.
patent: 3986997 (1976-10-01), Clark
patent: 4006271 (1977-02-01), French et al.
patent: 4026826 (1977-05-01), Yoshida et al.
patent: 4027073 (1977-05-01), Clark
patent: 4049867 (1977-09-01), Ito et al.
patent: 4082719 (1978-04-01), Liles et al.

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