Aqueous pigment dispersion
AssigneeKao Corporation
InventorsTomohiko Nagano, Hiroto Soma, Shu Nagashima
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Abstract
A pigment water dispersion including pigment-containing polyester resin particles. An alcohol component as a raw material monomer of the polyester resin satisfies the following conditions 1 and 2. Condition 1: a content of a compound (I) represented by the following formula (I) in the alcohol component is not more than 7 mol %, wherein OR1 and R2O are each independently an oxyalkylene group comprising not less than 1 and not more than 4 carbon atoms, and x and y are each independently a positive number of not less than 0. Condition 2: a content of a compound (II) comprising two secondary hydroxy groups except for the compound (I) in the alcohol component is not less than 45 mol %.
Claims20
A pigment water dispersion comprising pigment-containing polyester resin particles, wherein:
- an alcohol component as a raw material monomer of the polyester resin satisfies the following conditions 1 and 2,
- Condition 1:
- a content of a compound (I) represented by the following formula (I) in the alcohol component is not more than 7 mol %,
- wherein OR1 and R2O are each independently an oxyalkylene group comprising not less than 1 and not more than 4 carbon atoms, and x and y are each independently a positive number of not less than 0;
- and
- Condition 2:
- a content of a compound (II) comprising two secondary hydroxy groups except for the compound (I) in the alcohol component is not less than 45 mol %.
Dependencies are inferred from the claim text.