微生物由来新規分散剤およびその誘導体の分散評価

抄録

New microbial dispersants, CF2399 and CF2403, were discovered in a culture broth of fungi. In this study, we examined the adsorption of CF2399 and CF2403 to Titanium oxide (TiO₂) particles, and synthesized the derivatives of CF2399 and evaluated them as a dispersant using the Copper (II) phthalocyanine pigment. Several examinations showed that the adsorption of CF2403 onto the particles is stronger than CF2399. Through the adsorption isotherm of CF2403 onto the inorganic pigment, we inferred that CF2403 has two adsorption systems of single-or double-layer due to their existent rates. The hydrophobic derivatives of CF2399 have higher activity of dispersion to the organic pigment than CF2399. We ascertained that the addition of hydrophobic group caused an increase in the adsorption rate to the hydrophobic pigment.