水溶性アクリル樹脂塗料系における顔料分散-3-両性アクリル樹脂と顔料間の静電的相互作用による分散性の向上

概要

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Pigment dispersion in an amine-neutralized water soluble acrylic resin which has both basic and acidic functional groups was studied.<BR>As for the dispersion of carbon black pigment with negatively charged surface in the aqueous media, an excellent dispersibility of the pigment was obtained by the resin adsorption through electrostatic interaction between negative charge of the pigment and positive charge of the resin when the base strength of the resin was higher than that of the neutralizing amine.<BR>On the other hand, when the base strength of the amine was higher, no effect on the introduction of the basic functional group to the resin was observed.<BR>In the case of the pigment with positively charged surface, the foregoing method resulted in the increase in the yield value of the dispersed paste as the degree of dispersion increased.
色材協会の論文