Patent ID: 6702889
Filing Date: 2004-03-09
Classification: C09D

Abstract:
A pigment dispersing liquid, comprisingwater; a pigment; a dispersing agent, wherein the dispersing agent is at least one member selected from the group consisting of a compound having a general formula (1a) and a compound having a general formula (1b): whereinR1 is a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an allyl group, an aralkyl group, a phenyl group, a substituted phenyl group or a naphthyl group; k is an integer of ranging from 0 to 7; A1 is oxyethylene, oxypropylene or a combination of oxyethylene and oxypropylene; A2 is oxyethylene, oxypropylene or a combination of oxyethylene and oxypropylene; i,j&gE;0 so that (i+j) ranges from 30 to 100; M1 is selected from the group consisting of H, Li, Na, K, and N+R2 R3 R4 R5, wherein each of R2, R3, R4 and R5 is H, methyl, ethyl, 2-hydroxyethyl or 3-hydroxypropyl; and p, q&gE;1 so that (p+q)=3; wherein if the compound of general formula (1b) is present, A1 and A2 cannot be simultaneously oxyethylene.