| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing an optical recording medium the warping of which is restrained, at a low cost with high productivity, by forming a light transmission layer excellent in abrasion resistance and light transmissivity by a spin coating method and to provide the optical recording medium having the light transmission layer excellent in abrasion resistance and light transmissivity regardless of low tensile elastic modulus. <P>SOLUTION: The optical recording medium has a supporting substrate, the light transmission layer softer than the supporting substrate and an information layer formed between the supporting substrate and the light transmission layer at the least. A resin composition is applied on the information layer by the spin coating method to form a coating film and the coating film is cured by irradiating the coating film with an ultraviolet light or an electron beam to form the light transmission layer. The resin composition contains as main components (A) a radical-curing urethane(meth)acrylate which is obtained by reacting (a-1) a compound having three or more isocyanate groups binding to an aliphatic carbon atom per one molecule thereof and (a-2) a polycaprolacton-modified hydroxyethyl(meth)acrylate and (B) a radical-curing monomer having a viscosity of 400 mPa-s or less at 25°C. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
