C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/200, 204/49,
C09D 133/06 (2006.01) C08F 265/04 (2006.01) C08J 7/04 (2006.01) C08K 5/00 (2006.01) C09D 4/06 (2006.01) C09D 7/12 (2006.01)
Patent
CA 1319458
ABSTRACT OF THE DISCLOSURE 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 Image in which R is C6-22 alkyl or C6-22 alkoxy, R1 and R2 are independently hydrogen, C1-8 alkyl, C1-12 alkoxy, C1-12 alkylthio, phenoxy or phenylthio, provided that R1 and R2 may not both be selected from alkylthio, phenoxy and phenylthio, and R3 is hydrogen or C1-8 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 component (A), (B), (C) and (D) are by weight based on nonvolatile components (i.e., solids) of the coating composition. Also disclosed is a method of coating comprising (I) applying to the metallized surface of a metallized, plastic substrate a film of the coating composition of the invention and (II) curing the film by exposing it to ultraviolet radiation. Also disclosed is a metallized plastic substrate having directly adhered to the metallized surface thereof, a transparent, crosslinked film produced by the method of the invention.
593464
Mckinley Mildred Lisa
Poole James Edward
Borden Ladner Gervais Llp
Ppg Industries Inc.
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