Electrodeposition coating method of photocuring composition
AssigneeKansai Paint Co., Ltd.
InventorTomoo Kokawa
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Abstract
Electrodeposition coating method of photocuring composition to form excellent and uniform coating films on the surfaces of electroconductive articles, which comprises the steps of: immersing said electroconductive article into an electrodeposition coating bath which contains, as the principal components, water soluble or water dispersible film forming polymerizable unsaturated resin, water insoluble photopolymerization initiator, and a polyfunctional unsaturated compound insoluble in water; forming electrodeposition coating film on the surface of the article by supplying electric current to the article as an anode; and irradiating actinic rays to the coating film on the article to cause the curing of the coating film by photopolymerization.
Claims11
An electrodeposition coating method of photocuring composition which comprises the steps of:
- immersing an electroconductive article into an electrodeposition coating bath which comprises, as the principal ingredients, (a) water soluble or water dispersible film forming polymerizable unsaturated resin having an acid value of 30 to 240, an unsaturation equivalent of about 250 to 2000 and a number average molecular weight of about 1000 to 6000, (b) water insoluble photopolymerization initiator, (c) a polyfunctional unsaturated compound insoluble in water, and (d) water;
- forming electrodeposition coating film on the surface of the electroconductive article by supplying electric current to the article as an anode;
- and
- applying actinic rays to the coating film on the article to cause the curing of the coating film by photopolymerization.
Dependencies are inferred from the claim text.