| abstract |
PCT No. PCT/EP94/02975 Sec. 371 Date Mar. 13, 1996 Sec. 102(e) Date Mar. 13, 1996 PCT Filed Sep. 6, 1994 PCT Pub. No. WO95/07950 PCT Pub. Date Mar. 23, 1995The present invention relates to a process for the production of cyanine dyes with their methine chain showing group (M) and the charge compensation occuring by linked end groups through transformation of cationic cyanine dyes comprising group (D) with CH-acid compounds of the following formula (I) B1-CH2-B2 in an inert solvent, the substituents having the significance given in the description. |