发明名称 |
Squarylium-metal chelate compounds and optical recording media |
摘要 |
Squarylium-metal chelate compounds as recording materials for optical recording media, and optical recording media using these compounds, which have excellent recording properties, light resistance and storage stability. The squarylium-metal chelate compound is represented by following Structural Formulas (1) and (2): <CHEM> <CHEM> In the formula (1), M represents a metal atom capable of coordinating; "a", "b" and "c" each represents a squarylium dye ligand of formula (2), where "a" is different from "b"; and "c" may be the same as or different from "a" or "b"; and "m" represents 0 or 1. In the formula (2), R1 and R2 are the same or different and each represents an alkyl group, aralkyl group, aryl group or heterocyclic group, each of which may be substituted; and X represents an aryl group which may be substituted, a heterocyclic group which may be substituted, or Z3=CH-, wherein Z3 represents a heterocyclic group which may be substituted.
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申请公布号 |
EP1449890(A1) |
申请公布日期 |
2004.08.25 |
申请号 |
EP20040003167 |
申请日期 |
2004.02.12 |
申请人 |
RICOH COMPANY, LTD.;KYOWA HAKKO CHEMICAL CO., LTD.;KYOWA YUKA KK |
发明人 |
YASHIRO, TOHRU;ISHIMI, TOMOMI;MIKAMI, TATSUO;SHIMIZU, IKUO;KINUGASA, MOTOHARU;TOYODA, HIROSHI |
分类号 |
B41M5/26;C07D403/08;C09B23/00;C09B57/00;C09B57/10;G11B7/244;G11B7/249;(IPC1-7):C09B57/00;G11B7/24;B41M5/00 |
主分类号 |
B41M5/26 |
代理机构 |
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