Water based selectable charge magnetic inks

Details Water based selectable charge magnetic inks Water based selectable charge magnetic inks

C - Chemistry, Metallurgy

09

D

31/134, 6/26

C09D 11/02 (2006.01) C09C 1/24 (2006.01) H01F 1/44 (2006.01) H01F 41/16 (2006.01)

Patent

CA 1107057

WATER BASED SELECTABLE CHARGE MAGNETIC INKS ABSTRACT OF THE DISCLOSURE Water based magnetic colloidal fluids, useable as inks, when prepared by coating chemically precipitated magnetite (Fe304) with an adsorption site providing coating agent including certain organic anions, such as sulfates, sulfonates or amino carboxilates, and then dispersing the coated product with non-ionic, anionic or cationic surfactants may exhibit selectably cationic, anionic or non-ionic charge responsiveness.

292605

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