| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new squalium compound useful such as for an optical recording medium and an optical recording medium containing the squalium compound. <P>SOLUTION: The squalium compound is shown by general formula (1) (wherein R<SB>1</SB>and R<SB>2</SB>each represents H, a halogen, a hydroxy group and an alkoxy group, R<SB>2</SB>to R<SB>5</SB>and R<SB>8</SB>to R<SB>11</SB>each represents H, a halogen, a hydroxy group and an alkyl group, R<SB>6</SB>and R<SB>7</SB>each represent H, an alkyl group and an aromatic ring, and R<SB>13</SB>represents an alkylene group) and the optical recording medium contains these compounds in a recording layer. The squalium compound shown by general formula (1) has a maximum absorption peak wave length near 405 nm and has a suitable molar absorptivity, and is useful as an organic compound dye for the optical recording medium using a blue laser light. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
