Ppg Industries, Inc.

Mildred L McKinley

James E Poole

Leland H Carlblom

David C Kapp

Russell E Boston

Jess A Kozma

Disclosed herein is a coating composition for coloring transparent containers such as glass bottles, the composition comprising a combination of a film-former such as an acrylic resin, a metal-free polymeric dye reactive with the resin, an adhesion promoter (and optionally an ultraviolet light absorber). Also disclosed are a method of coating containers with such a composition and the resulting product.

Coatings and method for coloring light-transmitting containers

Disclosed herein is a combination of a film-former, a metal-free, reactive colorant, ultraviolet light absorber and an adhesion promoter in an effective combination to substantially block transmission of light through a container in order to reduce lightstruck phenomenon.

Coatings for the protection of products in light-transmitting containers

Disclosed is a coating composition which crosslinks upon exposure to ultraviolet radiation to produce a transparent coating. The coating composition comprises: (A) from 4 to 10 percent of an oxalanilide ultraviolet light (UV) stabilizer dissolved in the coating composition, the UV stabilizer corresponding to the formula ##STR1## in which R is C.sub.6-22 alkyl or C.sub.6-22 alkoxy, R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-8 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 alkylthio, phenoxy or phenylthio, provided that R.sub.1 and R.sub.2 may not both be selected from alkylthio, phenoxy and phenylthio, and R.sub.3 is hydrogen or C.sub.1-8 alkyl; (B) from 20 to 80 percent of a radiation sensitive monomer having at least two addition polymerizable unsaturated bonds; (C) from 0.1 to 5.0 percent of a photopolymerization initiator; and (D) from 80 to 20 percent of an acrylic addition polymer having at least one amino group and having a number average molecular weight of about 8,000-70,000, the addition polymer being derived from a mixture of copolymerizable ethylenically unsaturated monomers containing a monomeric ethylenically unsaturated amine. The percentages of components (A), (B), (C) and (D) are by weight based on nonvolatile components (i.e., solids) of the coating composition.

UV curable coatings containing oxalanilide stabilizers, method of

A metallized plastic substrate having directly adhered to the metallized surface thereof, a transparent, cross-linked film from a coating composition comprises: (A) from 4 to 10 percent of an oxalanilide ultraviolet light (UV) stabilizer dissolved in the coating composition, the UV stabilizer corresonding to the formula ##STR1## in which R is C.sub.6-22 alkyl or C.sub.6-22 alkoxy, R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-8 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 alkylthio, phenoxy or phenylthio, provided that R.sub.1 and R.sub.2 may not both be selected from alkylthio, phenoxy and phenylthio, and R.sub.3 is hydrogen or C.sub.1-8 alkyl; (B) from 20 to 80 percent of a radiation sensitive monomer having at least two addition polymerizable unsaturated bonds; (C) from 0.1 to 5.0 percent of a photopolymerization initiator; and (D) from 80 to 20 percent of an acrylic addition polymer having at least one amino group and having a number average molecular weight of about 8,000-70,000, the addition polymer being derived from a mixture of copolymerizable ethylenically unsaturated monomers containing a monomeric ethylenically unsaturated amine. The percentages of components (A), (B), (C) and (D) are by weight based on nonvolatile components (i.e., solids) of the coating composition.

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Pittsburgh, PA, United States of America

Mildred L McKinley