Studies on Correlations between Adhesion Tension of Solvents to Pigments and Solubility Parameters
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概要
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In order to clarify the details of interactions between pigments, resins and solvents, the correlations between adhesion tension of solvents to pigments and solubility parameters of solvents were examined. And then the studies of correlations between the finding and pigment stabilities in paints gave the results summarized below.<BR>1. A distinctive correlation was found to exist between hydrogen-bonding parameter (δ<SUB>n</SUB>) of solvents and adhesion tensions of solvents to pigments. That is to say, the δ<SUB>n</SUB>, of solvents giving the maximum adhesion tension varies with pigments, which were found to be divided into three groups.<BR>2. Pigments having a low level of adhesion tensions for solvents were difficult to disperse, sufficient pigment dispersion being unobtainable with any type of vehicles.<BR>3. Pigments which had a large adhesion tension value for solvents having a large δ<SUB>n</SUB> were easily dispersed in a butylated melamine-formaldehyde vehicle, and pigments which had a large adhesion tension value for solvents having a small ah, were easily dispersed in maleic resin vehicle.<BR>Pigments which had a large adhesion tension value for solvents having a large and a small aft were easily dispersed in both resin vehicles.
- Japan Society of Colour Materialの論文