| 摘要 |
PURPOSE:To enable a thin layer to be formed without deteriorating hiding power by incorporating a mixture of an unsatd. org. compd. having 2-3 double bonds in one molecule, an unsatd. org. compd. having one double bond and one epoxy group in one molecule, and an inorg colorless white pigment each in a specified proportion. CONSTITUTION:The unsatd. org. compd. A having 2 C=C double bonds in one molecules, and the unsatd. org. compd. B having 3 double bonds. in one molecule, and in addition to both, the unsatd. org. compd. C having one C=C double bond and an epoxy group in one molecule, such as acrylate contg. an epoxy group represented by the formula shown on the right, X being 1-8C alkylene or hydroxy alkylene are mixed. As the inorg. white pigment D, ones used for the hiding agent of a photographic printing paper is used. A weight ratio of the unsatd. compds. A, B, and C to the white pigment D, [(A+B+C)/D], is controlled to 3/1-1/9. The surface of a paper is coated with a coating fluid contg. these components, and the obtained compsn. is hardened by polymerizing it by irradiating electron beams. |
