Cellulose dispersion

A process for producing a cellulose dispersion, which comprises dissolving a cellulose in an aqueous inorganic acid solution to prepare a cellulose solution, reprecipitating the cellulose solution in water or a coagulating agent containing not less than 50% by weight of water to prepare a cellulose suspension, subjecting the cellulose in the suspension to acid hydrolysis treatment, and subsequently removing the acid from the suspension.

A process for producing a cellulose dispersion, which comprises dissolving a cellulose in an aqueous inorganic acid solution to prepare a cellulose solution, reprecipitating the cellulose solution in water or a coagulating agent containing not less than 50% by weight of water to prepare a cellulose suspension, subsequently preparing a dehydrated cake of the cellulose from the suspension, thereafter introducing the dehydrated cake into water at not less than 50° C. to subject the cellulose to acid hydrolysis treatment and then removing the acid from the suspension.

A cellulose particulate which is composed of a cellulose having crystal forms of cellulose I and cellulose II, wherein a crystallinity of cellulose I is not more than 0.1 and a crystallinity of cellulose II is not more than 0.4, and which has an average particle diameter of 0.2 to 20 μm, a ratio of long diameter (L) to short diameter (D) as observed through a scanning electron microscope (L/D) of not more than 1.2 and a coefficient of aggregation of 1.0 to 3.0, provided that the coefficient of aggregation=(average particle diameter calculated from the volume reduced distribution obtained by a laser diffraction-scattering type particle size distribution measuring apparatus)/(average particle diameter of volume reduction by a scanning electron microscope).