文章基本信息
- 标题：カラー写真画像の退色に関する研究第2報 マゼンタ・ピラゾロン・アゾメチン色素溶液の亜硫酸イオンによる退色反応機構の定性的検討
- 本地全文：下载
- 作者：宮川 俊夫 ; 渡辺 信 ; 石川 成直 等
- 期刊名称：日本写真学会誌
- 印刷版ISSN：0369-5662
- 电子版ISSN：1884-5932
- 出版年度：1974
- 卷号：37
- 期号：3
- 页码：117-124
- DOI：10.11454/photogrst1964.37.117
- 出版社：The Society of Photographic Science and Technolgy of Japan
- 摘要：
A magenta pyrazolone azomethine dye was prepared by oxidative coupling of p -diethylaminoaniline with 1-phenyl-3-methyl-5-pyrazolone. The dye was bleached in buffered EtOH-H2O solution containing excess sodium sulphite. The reaction rate of the dye bleaching was observed in the range of pH 5-10, several ten minutes, at 85°C, in N2 gas. Regeneration ratio of the dye was about 100% by addition of HCHO, while it was only 3-5% in the case of K2S2O8 adding. The reaction scheme was concluded as follows: the main reaction dye+SO32-+H+→H·dye·SO3-complex (1) the side reaction dye+SO32-+H2O→leuco dye+SO42- (2)
