Method for preparing ink concentrates

Details Method for preparing ink concentrates Method for preparing ink concentrates

1996-01-16

1999-07-06

McCamish, Marion

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524313, 106 27R, 106 28R, 260DIG38, C09D 1110

Patent

active

059198389

ABSTRACT:
Methods for preparing an ink concentrate are disclosed. To prepare the ink concentrate, a varnish that includes at least one dispersing polymer is added to the pigment particles, such as an aqueous slurry or an organic-solvent-treated aqueous slurry of the pigment particles. The blend of varnish and pigment particles then is heated to a temperature effective to melt the dispersing polymer. Upon cooling, the dispersing polymer solidifies at the surface of the pigment particles to thereby physically attach and bond to and preferably encapsulate the pigment particles and form an ink concentrate. The ink concentrate thus formed will have improved color properties as compared to conventional ink concentrates.

REFERENCES:
patent: 4327011 (1982-04-01), Ripley et al.
patent: 4755563 (1988-07-01), West

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