Optical recording medium, metal complex compound and organic dye compound

A technology of optical recording media and metal complexes, which is applied in the direction of nickel organic compounds, azo dye complex metal compounds, optical recording carriers, etc., can solve the problems of low reflectivity, inability to record and read, etc., and achieve high The effect of sensitivity

Inactive Publication Date: 2008-03-26
CMC MAGNETICS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a recording medium suitable for optical recording and reading with laser light with a relatively long wavelength has the following problems. read

Method used

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  • Optical recording medium, metal complex compound and organic dye compound
  • Optical recording medium, metal complex compound and organic dye compound
  • Optical recording medium, metal complex compound and organic dye compound

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0234] (a-1)

[0235] With 22.63g (0.2 mol) of ethyl cyanoacetate represented by the following structural formula [1], 3-oxobutyric acid ethyl ester represented by the structural formula [2] of 26.03g (0.2 mol) and 14.63g (0.2 mol) The n-butylamine represented by the structural formula [3] of ) was dissolved in 20ml of ethanol, and after dripping 6ml of piperidine, half reflux was carried out under stirring conditions for 26 hours. After the reaction solution was cooled, it was stirred in 200 ml of 10% hydrochloric acid aqueous solution, and then a solid was precipitated. After the precipitated solid was filtered and washed with water, it was suspended in 100 ml of hexane solution, filtered after stirring for about 30 minutes, and the filtrate was heated and dried in vacuum to obtain 11.3 g (yield 27.4%) of the following compound [4 ] (1-n-butyl-3-cyano-4-methyl-6-hydroxy-2-pyridone).

[0236] Chemical formula 28

[0237]

[0238] Chemical formula 29

[0239]

[0240...

manufacture example

[0266] Suspend 18.61 g of the following citrazinic acid [7] in 500 ml of ethanol, drip 27 ml of concentrated sulfuric acid at room temperature under stirring, and then reflux for 4 hours. After the reaction solution was cooled, it was put into 1000 ml of water to precipitate solid. The precipitate was filtered, washed with water, and dried in vacuum to synthesize 14.88 g of the following compound [8] (67.7% yield).

[0267] Chemical formula 33

[0268]

[0269] Chemical formula 34

[0270]

[0271] Then, 3.5g (0.025mol) of 3-amino-5-tert-butylisoxazole represented by the following structural formula [9] was stirred and dissolved in 25ml of acetic acid, 8.3ml of propionic acid, and 1ml of concentrated sulfuric acid solution, and cooled to 0~ 5°C. 8.85g of 43% nitrosyl sulfuric acid was dropped therein to keep the temperature below 10°C for diazotization to prepare a diazonium solution.

[0272] Chemical formula 35

[0273]

[0274] On the other hand, in another co...

Embodiment 3～ Embodiment 16

[0291] Next, metal complex (60) to metal complex (73) were synthesized by the same method as the above-mentioned synthesis method, and a coating film was formed in the same manner as in Example 1, and the absorption spectrum of the coating film was measured. The maximum absorption wavelength (λmax) in solution (chloroform), the molar absorptivity, and the maximum absorption wavelength (λmax) of the coating film of these compounds were measured (octafluoro-n-pentanol was used as the coating solvent).

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Abstract

To provide an optical recording medium having a recording layer improved in light stability that is capable of recording and regeneration of high-density optical information by short-wavelength laser beams. There is provided an optical recording medium comprising a recording layer containing an organic dye compound wherein the recording layer contains a metal complex compound composed of any of pyridone azo compounds of the following general formulae [I] to [III] having a 6-hydroxy-2-pyridone structure as a coupler component and having an isoxazole, 1,2,4-triazole or pyrazole structure as a diazo component and, coordinating therewith, an ion of bivalent metal, such as nickel, cobalt, iron, zinc, copper or manganese. [I] [II] [III] In the general formulae [I] to [III], each of R1 to R10 independently is a hydrogen atom or a monovalent functional group.

Description

technical field [0001] The present invention relates to an optical recording medium and the like, and more specifically, to an optical recording medium and the like having excellent light resistance against blue laser light. Background technique [0002] Now, various optical recording media such as CD-R / RW, DVD-R / RW, and MO can store large-capacity information and are easy to access randomly (random access), so they are used as external media in information processing devices such as computers. Storage devices are widely known and popularized. Among them, organic dye-based optical recording media provided with a recording layer containing an organic dye compound, typified by CD-R or DVD-R, are considered to be advantageous in terms of low cost and ease of manufacture. [0003] On the other hand, due to the increase in the amount of information to be processed, it is desired to increase the recording density of the medium. In recent years, it is being advocated that the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/26G11B7/244
CPCG11B7/2467G11B7/2531C09B45/18G11B7/2463G11B7/2532G11B7/2542G11B7/2536G11B7/259G11B7/248G11B7/2535C09B45/20C09B45/14G11B7/2548G11B7/2534G11B2007/25417G11B7/2492C09B29/3634C07F15/04G11B7/244
Inventor 宫泽隆司黑濑裕
Owner CMC MAGNETICS CORPORATION
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