Organic-pigment aqueous dispersion, method of producing the same, and colored coating composition and coated article using the same
AssigneeFUJIFILM Corporation
InventorsTadahisa Sato, Hideki Maeta, Jun Tanabe, Hirokazu Kyota
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Abstract
An organic-pigment aqueous dispersion, containing a pigment at a concentration of 6 to 30 mass %, and having a haze of 0.3 to 10%, as determined by enclosing the dispersion in a transparent glass cell of optical distance 0.2 mm and analyzing with integrating-sphere photoelectric photometry; and a colored coating composition using the same.
Claims14
An organic-pigment aqueous dispersion, comprising a pigment at a concentration of 6 to 30 mass %, and having a haze of 0.3 to 10%, as determined by enclosing the dispersion in a transparent glass cell of optical distance 0.2 mm and analyzing with integrating-sphere photoelectric photometry, wherein the aqueous dispersion contains at least one anionic surfactant that has a solubility of 5 mass % or more in an aprotic polar solvent, the at least one anionic surfactant being represented by formula (I), having a molecular weight of 400 to 2,000
- wherein R1 represents an alkyl group having 5 to 20 carbon atoms;
- R2 represents an alkyl, alkenyl, or alkynyl group having 3 to 10 carbon atoms;
- R3 represents —SO3M or —(CH2)n—COOM, in which M represents a sodium, potassium, or ammonium ion;
- and n is 1 or 2;
- and m is an integer of 1 to 20.
Dependencies are inferred from the claim text.