Patent ID: 6749675
Filing Date: 2004-06-15
Classification: C09D

Abstract:
An aqueous ink composition comprising at least:a colorant; water; 0.005 to 10 wt. %, based on the whole weight of the ink composition, of at least one acetylene alcohol compound represented by the following formula (1): wherein R1, R2 and R3 each independently represents a hydrogen atom, an alkyl group which may be branched, or an alkylphenyl group; and a surface active substance capable of causing the acetylene alcohol compound of formula (1) to dissolve in water, wherein the surface active substance comprises at least one compound selected from compounds represented by the following formulas (21a), (21b), (21c), (21d), (21e) and (21f): wherein R11 to R15 each independently represents a C1-15 alkyl group which may be branched, subscripts n1, m1, h1, k1, j1, a, b and c each independently stands for a numeral of 1 to 30, and M1 and M2 each independently represents a hydrogen atom, an alkali metal or a base such as ammonium.