Thick liquid for preparing surface conditioner, and surface conditioner

Abstract

The subject of this disclosure is to provide a concentrated liquid for preparing a surface modifier with excellent dispersion stability. One embodiment of solving the above-mentioned subject is a concentrated liquid for preparing a surface modifier containing zinc phosphate particles and a dispersant stabilizer. The zinc phosphate particles have a D50 of 3 μm or less, and the content of zinc phosphate particles relative to the total mass of the concentrated liquid is 3% by mass or more and 60% by mass or less. The dispersant stabilizer includes layered clay minerals and sulfur-containing compounds, and the content of layered clay minerals relative to the total mass of the concentrated liquid is 0.1% by mass or more and 20% by mass or less. The layered clay minerals are natural lithium bentonite and / or synthetic lithium bentonite.