SURFACE-HYDROPHOBICIZED CELLULOSE NANOFIBERS FOR OILY THICKENER, OILY THICKENER COMPOSITION CONTAINING SAME, COSMETICS AND HYDROPHOBICIZED CELLULOSE NANOFIBER COMPLEX FOR OILY THICKENER CONTAINING SAME, OILY THICKENER COMPOSITION CONTAINING SAME, AND COSMETICS CONTAINING SAME

摘要

[Problem] To provide an oily thickener which has a high thickening effect on oily components, such as silicone oil, nonpolar organic compounds, and low-polar organic compounds, and is easy to handle. [Solution] Surface-hydrophobicized cellulose nanofibers for an oily thickener according to the present invention have an average thickness of 3-200 nm, and an average length of 0.1 μm or more, wherein an aqueous dispersion containing 1 wt% of the cellulose nanofibers has a viscosity value of 700-2100 mPa·s, hydroxy groups in cellobiose units thereof are substituted with a vinyl ester and/or an organic acid vinyl ester, and the degree of the substitution is 0.2-0.8.