AQUEOUS CARBON BLACK DISPERSION SOLUTION, PREPARATION METHOD AND USE THEREOF

    公开(公告)号:JP2001072914A

    公开(公告)日:2001-03-21

    申请号:JP2000217872

    申请日:2000-07-18

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To obtain a dispersion solution which does not give a stain after sprayed on the substrate as well as good in storage stability by compounding carbon black, a cationic surfactant and a nonionic surfactant with water at a specific ratio. SOLUTION: 1 to 45 mass % of carbon black, 1 to 40 mass % of a cationic surfactant and 0.5 to 10 mass % of a nonionic surfactant are compounded. For the carbon black, a pigment, a pigment carbon black having an average particle size of 8 to 80 nm as the primary particles and the DBP value of 40 to 200 mg/100 g, which is prepared using a furnace method, gas black method, channel method or lamp black method, can be used. The carbon black is dispersed in water together with a wetting agent, which may be dispersed by use of a purl mill, an ultrasonic apparatus or Ultra-Turrax according to circumstances. Alternatively, it is further centrifuged or filtered. The pH of the dispersion solution is preferably 1 to 4.

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