Patent ID: 7604692
Filing Date: 2009-10-20
Classification: C09D,Y10T

Abstract:
1. An ink composition for ink jet recording, comprising a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water-soluble 1,2-alkanediol, a poor water-soluble 1,2-alkanediol, and a poor water-soluble alkanediol having a hydroxyl group at both ends of its main chain, and the alkanediol satisfies a requirement on a weight basis of A:(B+C)=2:1 to 2:3 wherein A represents the content of the water-soluble 1,2-alkanediol in the alkanediol; B represents the content of the poor water-soluble 1,2-alkanediol in the alkanediol; and C represents the content of the poor water-soluble alkanediol having a hydroxyl group at both ends of its main chain in the alkanediol.