Non-aqueous dispersing agent and liquid developing agent for ele

Details Non-aqueous dispersing agent and liquid developing agent for ele Non-aqueous dispersing agent and liquid developing agent for ele

1990-09-28

1992-02-04

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430114, G03G 9135

Patent

active

050859668

ABSTRACT:
A non-aqueous dispersing agent comprising a graft copolymer is characterized in that monomer(s) to constitute the graft portion(s) of the graft copolymer is (are) at least one or more macromonomers each having a terminal polymerizable functional group and that the graft copolymer is substantially soluble in a high electric-resistance non-aqueous solvent having a dielectric constant of 3 or less and a volume specific resistance of 10.sup.9 .OMEGA.cm of more. The dispersing agent may sufficiently disperse any of a colorant of pigment or dye, a fixing resin-coated colorant or a fixing resin itself by wet-dispersion, and it has an excellent storage stability. The agent is therefore useful in a liquid developer for electrostatic photography or in a liquid developer for preparing printing plates.

REFERENCES:
patent: 4618557 (1986-10-01), Dau et al.
patent: 4840865 (1989-06-01), Kato et al.
patent: 4983486 (1991-01-01), Kato et al.

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