| 摘要 |
PURPOSE:To easily obtain titled agent with assurance through an inversion process, high in stability and great in its sizing effect, by using, as dispersant, a combination of specific surfactant with water-soluble acid. CONSTITUTION:(A) A molten rosin material is admixed with (B) an acidic dispersant aq. solution (pref. a pH 2.5-3.5) containing (i) 2-10wt% based on the component (A) of a surfactant of formula (R is 8-24C hydrophobic hydrocarbon; M is monovalent cation; n is 5-25) and (ii) 5-10wt% based on said surfactant, of a water-soluble acid (e.g. hydrochloric acid, nitric acid) to form a homogeneous dispersion followed by adding, while stirring, warm water to effect phase inversion, thus obtaining the objective agent. |
