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2. 发明专利

JPS5624450A MANUFACTURE OF CATIONIC DYE 失效
公开(公告)号：JPS5624450A
公开(公告)日：1981-03-09
申请号：JP10523380
申请日：1980-08-01
申请人： BAYER AG
发明人： ROODERITSUHI RAUE , HAINTSU GIIZETSUKE
IPC分类号： C09B26/02 , C09B26/04 , C09B44/00
摘要： To prepare dyestuffs of the general formula in which R1 and R2 represent methyl or ethyl, n represents 0 or 1, B represents the divalent radical of a 5-membered or 6-membered heterocyclic ring system and X- represents an anion, and wherein the ring a can be substituted by C1- to C4-alkyl radicals, C1- to C4-alkoxy radicals or halogen, compounds of the formula wherein R1, B and n have the meaning indicated above, m represents 0 or 1 and the ring a can be substituted by C1- to C4-alkyl, C1- to C4-alkoxy or halogen, or of the formula in which B and R1 have the abovementioned meaning and the ring a can be substituted by C1- to C4-alkyl, C1- to C4-alkoxy or halogen, are reacted with arylsulphonic acid esters of the formula wherein R represents hydrogen, C1- to C4-alkyl or halogen and R2 represents methyl or ethyl, in the presence of water and acid-binding agents at temperatures of 20 DEG -70 DEG C., and, if appropriate, the arylsulphonate anion is replaced by another anion customary in dyestuff chemistry.

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