Substituted carboxylic acids as adjuvants for positive...

Details Substituted carboxylic acids as adjuvants for positive... Substituted carboxylic acids as adjuvants for positive...

G - Physics

03

G

96/56

G03G 9/125 (2006.01) G03G 9/135 (2006.01)

Patent

CA 2025127

48 SUBSTITUTED CARBOXYLIC ACIDS AS ADJUVANTS FOR POSITIVE ELECTROSTATIC LIQUID DEVELOPERS ABSTRACT OF THE INVENTION A positive-working electrostatic liquid developer consisting essentially of (A) a nonpolar liquid having a Kauri-butanol value of less than 30, present in major amount, (B) thermoplastic resin particles, less than 10 µm average by area particle size, (C) a nonpolar liquid soluble ionic or zwitterionic charge director compound, and (D) a substituted carboxylic acid or salt adjuvant as defined. Component (D) can be present in liquid (A) or dispersed in the resin particles. The process of preparation of the electrostatic liquid developer is described. The liquid developers are useful in copying, color proofing including digital color proofing, lithographic printing plates and resists.

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