Nove oxonol compound and process for producing the compound
申请人:Mikoshiba Hisashi
公开号:US20060142597A1
公开(公告)日:2006-06-29
A compound represented by the formula (I) defined herein and a compound represented by the formula (II) defined herein, and a process for producing the compound represented by the formula (I) which comprises reacting the compound represented by the formula (III) defined herein with the compound represented by the formula (IV) defined herein.
Organic dye for recording layer and high density optical recording medium using the same
申请人:Industrial Technology Research Institute
公开号:US07888518B2
公开(公告)日:2011-02-15
A preparation method of a dye incorporated in a recording layer for a high density optical recording medium, having the following general chemical structural formula (I):
is provided.
提供了一种用于高密度光学记录介质中记录层中包含染料的制备方法,该染料具有以下一般化学结构式(I):
Optical information-recording medium, novel oxonol compound and method of recording information
申请人:Akiba Masaharu
公开号:US20070020562A1
公开(公告)日:2007-01-25
An optical information-recording medium which contains a dye having at least two chromophores bonded to each other without any conjugated bond intervening between those chromophores.
一种光学信息记录介质,其中含有至少两个色团相互结合而没有任何共轭键介入的染料。
Method for Producing 1,3-Dioxolan-4,6-Dione Compound
申请人:Sato Shingo
公开号:US20080015365A1
公开(公告)日:2008-01-17
A method for producing a 1,3-dioxolan-4,6-dione compound from a ketone compound and a malonic acid, the method comprising: precipitating a 1,3-dioxolan-4,6-dione compound as a crystal from a mixed solvent comprising a first organic solvent having a dielectric constant of 10 or more and a water, so as to form a precipitated 1,3-dioxolan-4,6-dione compound; and isolating the precipitated 1,3-dioxolan-4,6-dione compound by a solid-liquid separation.
Novel Oxonol Dye Compounds and Optical Information Recording Medium
申请人:Mikoshiba Hisashi
公开号:US20080090174A1
公开(公告)日:2008-04-17
An optical recording medium comprising a substrate having thereon a recording layer containing at least two kinds of dye A and dye B, wherein dye A and dye B satisfy the following conditions (1) and (2): (1) the starting temperature of decomposition is from 150 to 250° C., (2) refractive index n(A) and extinction coefficient k(A) of dye A at the wavelength of recording laser ray, and refractive index n(B) and extinction coefficient k(B) of dye B at the same wavelength satisfy the following expressions:
n
(
B
)/
n
(
A
)>0.7
k
(
B
)/
k
(
A
)>10.