COATING AGENT FOR PAPER BASE MATERIALS OR PLASTIC BASE MATERIALS, AND PAPER BASE MATERIAL, PLASTIC BASE MAERIAL, CONTAINER AND PACKAGING MATERIAL, EACH HAVING COATING LAYER OF SAID COATING AGENT

摘要

The present invention provides a coating agent for paper base materials or plastic base materials, said coating agent being characterized by containing (A) a binder resin, (B) a photocatalyst and (C) an aqueous medium, while being also characterized in that: the photocatalyst (B) contains a divalent copper compound and titanium oxide containing crystalline rutile titanium oxide; the crystalline rutile titanium oxide has a full width at half maximum of 0.65 degree or less for the strongest diffraction peak corresponding to the rutile titanium oxide in an X-ray diffraction pattern plotting the diffraction line intensities relative to the diffraction angle 2θ with use of a Cu-Kα ray; the content of the crystalline rutile titanium oxide is 50% by mole or more and the content of anatase titanium oxide is less than 50% by mole in the titanium oxide in the photocatalyst; and from 0.5% by mass to 80% by mass of the photocatalyst (B) is contained relative to the total solid content of the coating agent.