Oil-based ink for preparing printing plate by ink jet process an

Details Oil-based ink for preparing printing plate by ink jet process an Oil-based ink for preparing printing plate by ink jet process an

1998-01-16

2000-11-07

Jagannathan, Vasu

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

Synthetic resins

Processes of preparing a desired or intentional composition...

430 49, C09D 1102, C09D 1110, C03G 1328

Patent

active

061438065

ABSTRACT:
An oil-based ink for a printing plate by an ink jet process comprising spraying an oil-based ink comprising at least resin particles dispersed in a nonaqueous carrier liquid having an electric resistance of 10.sup.9 .OMEGA.cm or more and a dielectric constant of 3.5 or less on a water-resistant support having a lithographically printable hydrophilic surface to dropwise from a nozzle form an image, wherein the resin particles dispersed are polymer particles obtained by polymerization granulation of a solution comprising (i), (ii) and (iii): (i) at least one monofunctional monomer (A) which is soluble in a nonaqueous solvent at least miscible with the nonaqueous carrier liquid and becomes insoluble therein by polymerization; (ii) (ii-a) at least one monomer (B) represented having a specific substituent copolymerizable with the monomer (A), or (ii-b) at least one specific monofunctional macromonomer (MA) having a weight average molecular weight of 2.times.10.sup.4 or less; and (iii) at least one dispersion-stabilizing resin soluble in the nonaqueous solvent and having no graft group polymerizing with a monomer, and a method for preparing a printing plate by an ink jet process using the ink.

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Leach, R.H. and Pierce, R.J., The Printing Ink Manual, Blueprint, London (p. 63), 1993.

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