ACTINIC RADIATION CURABLE MATERIALS

摘要

1481131 Coatings cured by actinic radiation NATIONAL STARCH & CHEMICAL CORP 20 March 1975 [22 March 1974] 11763/75. Heading B2E [Also in Division C3] Substrates are coated with 1) an actinic radiation-curable condensation product formed from:- a) 1.0 to 50.0 mole % of at least one hydroxyl ester of anα, # ethylenically unsaturated carboxylic acid, wherein the alkyl moiety contains 2-20 carbons and the acid moiety 3-4 carbons; b) 1.0-50.0 mole % of at least one polymerisable free-radical initiator activatable by actinic radiation and selected from halogenated alicyclic anhydrides (C5-15) and halogenated aromatic anhydrides, said anhydrides being devoid of groups which will inhibit pre-radical polymerisation, at least one non-halogenated cyclic anhydride in an amount up to 49.0 mole %; and at least one epoxide selected from epoxyalkyl acrylate and methacrylates and alkylene oxides in an amount up to 49.0 mole %, said mole percentages totalling 100% optionally in admixture with 2) up to an equimolar amount of at least one non- chemically bonded, copolymerisable acrylic diluent selected from acrylic and methacrylic acids; the hydroxyalkyl esters of said acids (alkyl C2-20); the glycidyl ester derivatives of said acid; the ethylene glycol and polyethylene glycol diester derivatives of said acids; the polyhydric alcohol ester derivatives of said acids; the non-gemalkandiol ester derivatives of said acids (alkyl C2-20); and the cycloalkyl ester derivatives of said acids (cycloalkyl C5-14). The coating material may be sprayed onto the substrate or applied by air knife, trailing blade, knife coater, reverse roll or gravure coating techniques. The substrate may be paper, cloth, paperboard, metal, glass, foamed plastics, rubber, regenerated cellulose, wood and plastics, e.g. polyethylene terephthalate, polystyrene, rubber hydrochloride, polyvinyl chloride and polyvinylidene chloride. The specific Examples describe the coating of glass slides, and their subsequent exposure to ultraviolet radiation, with products formed from a) 2-hydroxyethyl acrylate together with a tetrachlorophthalic anhydride, succinic anhydride andglycidyl methacrylate (I); tetrachloro phthalic anhydride, succinic anhydride, glycidyl methacrylate and epichlorohydrin (II); tetrabromophthalic anhydride, maleic anhydride and glycidyl methacrylate (III); tetrabromophthalic anhydride, succinic anhydride and glycidyl methacrylate (IV); 1, 4, 5, 6, 7, 7 hexachloro-5-norbornene-2, 3-dicarboxylic anhydride, maleic anhydride and glycidyl methacrylate (VI); tetrachlorophthalic anhydride maleic anhydride and glycidyl methacrylate (VII-X) tetrachlorophthalic anhydride, phthalic anhydride and glycidyl methacrylate (XI); and ,tetrachlorophthalic anhydride, maleic anhydride and glycidyl acrylate (XII. and b) hydroxypropyl methacrylate, tetrachlorophthalic anhydride, maleic anhydride and glycidyl methacrylate.