Hydrocarbon soluble sulfonic or sulfamic acids as charge...

Details Hydrocarbon soluble sulfonic or sulfamic acids as charge... Hydrocarbon soluble sulfonic or sulfamic acids as charge...

G - Physics

03

G

G03G 9/135 (2006.01)

Patent

CA 2042097

DX-0024 HYDROCARBON SOLUBLE SULFONIC OR SULFAMIC ACIDS AS CHARGE ADJUVANTS FOR POSITIVE ELECTROSTATIC LIQUID DEVELOPERS ABSTRACT OF THE INVENTION A positive charged electrostatic liquid developer consisting essentially of (A) a nonpolar liquid having a Kauri-butanol value of less than 30, present in a major amount, (B) thermoplastic resin particles having an average by area particle size of less than 10 µm, (C) a charge director compound, and (D) at least one sulfonic or sulfamic acid compound of the formulae: (1) R-SO3H, and (2) R-NH-SO3H wherein R is alkyl of 1 to 30 carbon atoms, aryl of 6 to 30 carbon atoms, substituted alkyl of 1 to 30 carbon atoms, or substituted aryl of 6 to 30 carbon atoms which is soluble in an amount of at least 0.5% based on the weight of component (C) in a mixture of components (A) and (C). The liquid developer is useful in copying, color proofing, digital color proofing, making lithographic printing plates, and resists. 32

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