Patent ID: 6040358
Filing Date: 2000-03-21
Classification: C09D,Y10S

Abstract:
An ink jet ink comprising:(a) an aqueous carrier medium;(b) an aqueous carrier medium insoluble colorant(c) a polymer dispersant; and(d) a linear polymer additive selected from the group consisting of:(i) water soluble, elastomeric ABA block polymers wherein the B block comprises an elastomeric polymer having a Tg of <0.degree. C. and a degree of polymerization of >10, and wherein the A block comprises a non-elastomeric acrylic or methacrylic polymer having a Tg >10.degree. C. and a degree of polymerization of <20; and(ii) water-dispersible .beta.-diketone polymers wherein the linear polymer additive is present in the amount of 0.5 to 20% by weight.