Primer compositions for injection molding

A process for forming an injection molded article, comprising:

• providing a photocurable primer composition comprising:
• 10 to 90 wt. % of one or more (meth)acrylate monomers;
• optionally, 1 to 10 wt. % of a cyanate ester component;
• 1 to 5 wt. % of a photoinitiator component selected from selected from the group consisting of 2,4,6 trimethylbenzoyldiphosphine oxide, 1-hydrocyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methyl-1-propanone, acetophenone and substituted acetophenones, benzoin and its alkyl esters, xanthone and substituted xanthones, diethoxy-acetophenone, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, diethoxyxanthone, chloro-thio-xanthone, N-methyl diethanol-amine-benzophenone, 1-benzoyl cyclohexanol, 2-benzyl-2-(dimethylamino)-1-[4-(4-morpholinyl)phenyl]-1-butanone;
• amino ketones, benzildimethyl-ketals, bis acyl phosphine oxide and benzophenones;
• about 15 to 35 wt. % of a rubber component comprising the combination of a core shell rubber having a mean diameter in the range of about 100 to about 300 nm, a polyvinyl butyral component having a molecular weight of less than about 120,000 Mw and optionally a (meth)acrylate carrier, wherein the core shell rubber and polyvinyl butyral component are present at a weight ratio of 1 to 1 to 2 to 1;
• and
• optionally 0.25 to about 5 wt. % of an amine component which is an aromatic amine component or a cycloaliphatic diamine component;
• providing an article;
• coating at least a portion of a surface of the article with the photocurable primer composition;
• partially but not fully curing the coating to a tack free surface by exposure to UV radiation, visible radiation or both UV radiation and visible radiation;
• providing an injection molding equipment having an open injection molding cavity;
• transferring the coated article into the open injection molding cavity;
• closing the injection molding cavity;
• injecting a molten thermoplastic resin selected from polycarbonate, glass filled polycarbonate, polyacrylamide and polycarbonate/acrylonitrile butadiene styrene alloy into the closed molding cavity and around the coated article;
• allowing the thermoplastic resin to solidify on the coated article to form the injection molded article;
• opening the injection molding cavity;
• and
• removing the injection molded article.