PROCESS FOR THE PRODUCTION OF CONCENTRATED SOLUTIONS
1378944 Solutions of dyes CIBA-GEIGY AG 14 Feb 1972 [15 Feb 1971] 6796/72 Heading C4P [Also in Division D1] Solutions of water-soluble anionic and cationic dyes are concentrated by cooling to a temperature below 0 C., the ice formed thereby being crushed and removed from the concentrated solution o...
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