Is superior in retention stability by the production manner and that manner of the water constituent for the ink jet which are produced includes the constituent and the said constituent which for the ink jet using the recording ink null

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an inkjet aqueous composition excellent in storage stability, to provide an inkjet aqueous composition produced thereby, and to provide an inkjet recording fluid containing the composition.;SOLUTION: The method comprises dispersing a pigment in water by using a dispersant being an organic polymer (A) compound consisting of recurring units represented by formula (1) and having a Tg of 50°C or higher, an acid value of 100-300 KOHmg/g, and a weight-average molecular weight of 2,000-30,000 and adding to the resultant dispersion an organic polymer compound (B) consisting of recurring units represented by formula (2) and having a Tg of 50°C or higher, an acid value of 50-200 KOHmg/g, and a weight-average molecular weight of 10,000-300,000. The inkjet composition is produced thereby, and the inkjet recording fluid contains the composition.;COPYRIGHT: (C)2004,JPO