Aqueous pigment dispersion and aqueous pigment ink for...

Details Aqueous pigment dispersion and aqueous pigment ink for... Aqueous pigment dispersion and aqueous pigment ink for...

2011-08-30

2011-08-30

Choi, Ling-Siu (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S500000, C524S059000

Reexamination Certificate

active

08008391

ABSTRACT:
An aqueous pigment dispersion capable of easily preparing an aqueous pigment ink for inkjet recording, from which is obtained a colored image which is excellent in scratch fastness and excellent in properties on any recording media such as color development on plain papers and gloss on dedicated papers, is provided. An aqueous pigment dispersion containing carbon black or an organic pigment (P), a (meth)acrylic copolymer (A), a polyoxyethylene/polyoxypropylene block copolymer (B) represented by the following general formula (1), a polyether based polyurethane (C), a basic material and water, wherein a mass ratio of the total of nonvolatile contents of (A), (B) and (C) to (P), (A+B+C)/P, is from 0.3 to 1.6; and a mass ratio of A/(A+B+C) is from 0.05 to 0.45, is provided.in-line-formulae description="In-line Formulae" end="lead"?HO—(C2H4O)a—(C3H6O)b—(C2H4O)c—H  (General Formula 1)in-line-formulae description="In-line Formulae" end="tail"?

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International Search Report dated Dec. 9, 2008, issued on PCT/JP2008/070448.

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