Invention Grant
US07709181B2 Cyanine compound and optical recording materials 失效
花青化合物和光学记录材料

  • Patent Title: Cyanine compound and optical recording materials
  • Patent Title (中): 花青化合物和光学记录材料
  • Application No.: US11664607
    Application Date: 2005-09-21
  • Publication No.: US07709181B2
    Publication Date: 2010-05-04
  • Inventor: Koichi ShigenoToru Yano
  • Applicant: Koichi ShigenoToru Yano
  • Applicant Address: JP Tokyo
  • Assignee: Adeka Corporation
  • Current Assignee: Adeka Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Young & Thompson
  • Priority: JP2004-295111 20041007
  • International Application: PCT/JP2005/017375 WO 20050921
  • International Announcement: WO2006/038464 WO 20060413
  • Main IPC: G11B7/24
  • IPC: G11B7/24
Cyanine compound and optical recording materials
Abstract:
Cyanine compounds represented by the general formula (I) which exhibit decomposition behavior suitable for the optical recording material to be used in optical recording layers of optical recording media for high-speed recording: (I) wherein A and B are each an optionally substituted benzene or naphthalene ring; X is O, S, Se, CR3R4, or NY; at least either of R1 and R2 is a group represented by the general formula (II) or (III) and when only either is a group represented thereby, the other is an organic group having 1 to 30 carbon atoms; R3 and R4 are each an organic group having 1 to 30 carbon atoms; Y is hydrogen or an organic group having 1 to 30 carbon atoms; at least either of Y1 and Y2 is a group represented by the general formula (IV) and when only either is a group represented thereby, the other is hydrogen or an organic group having 1 to 30 carbon atoms; Z is hydrogen, halogeno, or cyano; Anm− is an m-valent anion; m is an integer of 1 or 2; and p is a coefficient capable of keeping the electric charge neutral.
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