Invention Grant
US07682773B2 Cyanine compound, optical recording material using the same and optical recording medium 失效
花青素化合物,使用其的光学记录材料和光学记录介质

  • Patent Title: Cyanine compound, optical recording material using the same and optical recording medium
  • Patent Title (中): 花青素化合物,使用其的光学记录材料和光学记录介质
  • Application No.: US11791487
    Application Date: 2005-10-13
  • Publication No.: US07682773B2
    Publication Date: 2010-03-23
  • Inventor: Mitsuhiro OkadaToru YanoKoichi Shigeno
  • Applicant: Mitsuhiro OkadaToru YanoKoichi Shigeno
  • Applicant Address: JP Tokyo
  • Assignee: Adeka Corporation
  • Current Assignee: Adeka Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Young & Thompson
  • Priority: JP2004-340485 20041125
  • International Application: PCT/JP2005/018852 WO 20051013
  • International Announcement: WO2006/057113 WO 20060601
  • Main IPC: G11B7/24
  • IPC: G11B7/24
Cyanine compound, optical recording material using the same and optical recording medium
Abstract:
The cyanine compound of the present invention is represented by general formula (I) below and suitable as an optical recording material used in a recording layer of optical recording media on which recording and play-back are conducted with laser beam. The cyanine compound of the present invention particularly exhibits appropriate thermal decomposition behavior to attain sensitivity compatible with high-speed recording. (In the formula, each of ring A and ring B represents an optionally substituted benzene or naphthalene ring; each of R1 and R2 independently represents a C1-4 alkyl group or an optionally substituted benzyl group; at least one of R1 and R2 is an optionally substituted benzyl group; X represents O, S, or NY; each of Y, Y1, and Y2 independently represents a hydrogen atom or a C1-30 organic group; Z represents a hydrogen atom, a halogen atom, or a cyano group; Anm- represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient to keep an electric charge neutral.)
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