Patent ID: 6613815
Filing Date: 2003-09-02
Classification: C09D

Abstract:
An ink composition comprising water, a colorant, and an ABSCSâ€²Bâ€²Aâ€² or BASCSâ€²Aâ€²Bâ€² block copolymer wherein A and Aâ€² are blocks containing one or more ethylene oxide repeat monomer units, B and Bâ€² are blocks containing one or more propylene oxide repeat monomer units, C is a block comprising one or more repeat monomer units of an monoalkylsiloxane, an alkyl aryl siloxane, or a diarylsiloxane, S is an oplional spacer group between the A or B block and the C block, and S is an oplional spacer group between the C block and the Aâ€² or Bâ€² block, wherein the block copolymer is of the formula wherein R and Râ€² each, independently of the other, are hydrogen atoms, hydroxyl groups, alkyl groups, hydroxyl-substituted alkyl groups, or alkoxy groups, R1 and R2 each, independently of the other, is a hydrogen atom, an alkyl group, or an aryl group with the proviso that R1 and R2 cannot both simultaneously be alkyl groups, whether the same or different, z, i, l, and p are each integers representing the numbers of repeat alkylene oxide monomer units, wherein z, i, l, and p are each, independently of the other, from 1 to about 10,000, y is an integer representing the number of repeat siloxane monomer units and is from 1 to about 5,000, and j and k are each integers representing the number of repeat â€”(CH2)â€” units and are each, independently of the other, from 1 to about 10, wherein j+k&gE;1.