发明授权
- 专利标题: Process for the preparation of bis-(amino-phenyl)-disulphides
- 专利标题(中): 双(氨基 - 苯基) - 二硫化物的制备方法
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申请号: US238348申请日: 1981-02-26
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公开(公告)号: US4375562A公开(公告)日: 1983-03-01
- 发明人: Heinz U. Blank , Theodor Pfister , Rolf Putter
- 申请人: Heinz U. Blank , Theodor Pfister , Rolf Putter
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3009846 19800314
- 主分类号: C07C319/24
- IPC分类号: C07C319/24 ; C07C67/00 ; C07C313/00 ; C07C323/33 ; C07C93/14
摘要:
Process for the preparation of a bis-(amino-phenyl)-disulphide of the formula ##STR1## in which R represents hydrogen or halogen,which comprises contacting an amino-thiophenol of the formula ##STR2## or a salt thereof in which R has the abovementioned meaningwith sulphur or a sulphur-donating substance in an aqueous dispersion at a temperature of 10.degree. to 120.degree. C. and a pH value of 3 to 9.
公开/授权文献
- US5428552A Data compaction techniques for generation of a complex image 公开/授权日:1995-06-27
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