Water-based ink
AssigneeKao Corporation
InventorsRyuma Mizushima, Isao Tsuru, Koji Azuma, Takehiro Tsutsumi
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Abstract
A water-based ink comprising an aqueous dispersion of polymer particles made of a water-insoluble vinyl polymer containing a colorant, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising a specific monomer A such as a monomer A1 represented by the formula (I): 1 wherein R1 is hydrogen or methyl, R2 is hydrogen, alkyl or alkylphenyl, and n is 1 to 30; a monomer having a salt-forming group; and a monomer copolymerizable with the monomer A and the monomer having a salt-forming group. The water-based ink can be suitably used as a water-based ink for inkjet recording and the like.
Claims7
A water-based ink comprising an aqueous dispersion of polymer particles made of a water-insoluble vinyl polymer containing a colorant, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising:
- (A) at least one monomer A selected from the group consisting of a monomer A1 represented by the formula (I):
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- wherein R1 is hydrogen atom or methyl group, R2 is hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an alkylphenyl group having 1 to 9 carbon atoms, and n is a number of 1 to 30,
- a monomer A2 represented by the formula (II):
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- wherein R1, R2 and n are as defined above, and m is a number of 1 to 30, wherein oxyethylene group and oxypropylene group are added in a block or random form, and
- a monomer A3 represented by the formula (III):
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- wherein R1, R2, m and n are as defined above, and oxyethylene group and oxypropylene group are added in a block or random form;
- (B) a monomer having a salt-forming group;
- and
- (C) a monomer copolymerizable with (A) the monomer A and (B) the monomer having a salt-forming group.
Dependencies are inferred from the claim text.