C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 9/10 (2006.01) C09B 67/08 (2006.01) C09C 3/10 (2006.01) C09D 11/02 (2006.01) G03G 9/08 (2006.01) G03G 9/083 (2006.01) G03G 9/09 (2006.01) G03G 9/12 (2006.01) G03G 9/135 (2006.01) G11B 5/706 (2006.01) G11B 5/712 (2006.01) H01F 41/16 (2006.01)
Patent
CA 2134650
Encapsulated particles, such as magnetic particles, colored pigments, or carbon black, with high chemical affinity for ink vehicles. The encapsulated particles are suitable for printing inks, as well as for magnetic recording systems, such as audio and video tapes and magnetic storage disks. The encapsulated particles comprise particles having a coating on their surface formed from an ionomer or an oil, such as soya oil, or a mixture of ionomers and oil, and optionally a thixotropic agent, and/or a binder resin. The method for making such encapsulated particles avoids the use of volatile organic solvents and provides printing inks and coating compositions which also avoid the use of volatile organic solvents. Inks may be readily formulated, without the need for any complicated and expensive flushing process, by simply dispersing the encapsulated coloured pigment or carbon black in the desired vehicle.
Kirby Eades Gale Baker
Marconi Data Systems Inc.
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