Process for reproducibly preparing uniform dry ink...

Details Process for reproducibly preparing uniform dry ink... Process for reproducibly preparing uniform dry ink...

C - Chemistry, Metallurgy

09

D

400/1350, 31/154

C09D 11/08 (2006.01) C09D 11/02 (2006.01) C09D 11/10 (2006.01) G03G 9/09 (2006.01)

Patent

CA 1204892

PROCESS FOR REPRODUCIBLY PREPARING UNIFORM DRY INK COMPOSITIONS COMPRISING WATER-SOLUBLE CATIONIC DYESTUFFS Abstract of the Disclosure The present invention concerns our discovery that a water-soluble cationic dye and binder composition may be dissolved in a solvent, and, optionally, a magnetic material may be uniformly dispersed within said solvent solution. The resulting solution or mixture is agitated with a hot water solution comprising an ionizable salt whereby there is essentially no partitioning of the cationic dyestuff into the aqueous phase. During the intermixing step, the solvent is driven off, thereby providing a solid mixture of ink which may be pulverized and used in a wide variety of printing processes.

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