Kao Corporation

Naoki Nojiri

Keiichi Fukuda

Tomohito Kitsuki

Munehisa Okutsu

Takeshi Ihara

Noboru Nagatani

Keiichiro Tomioka

Masahiro Umehara

Hideaki Kubo

Yuko Yago

Masanori Takai

Kazutomo Osaki

Jun Shida

Ryuji Hasegawa

Keishi Shimokawa

Hidetake Nakamura

Toru Nishioka

Shinobu Hiramatsu

Kohei Nakanishi

Takafumi Uematsu

Tomoya Wada

Keisuke Nakao

Takuya Imaki

Takako Kawano

A particle diameter of a raw material to be pulverized can be decreased within a short time period. A vibration mill includes a container having therein a columnar space with a central axis of the columnar space being almost horizontal while the container is held so as to be vibratable in a direction of within a plane that is almost perpendicular to the central axis, a cylindrical medium disposed in the container so as to be vibratable, and a plurality of pulverizing media disposed inside the cylindrical medium so as to be vibratable. The ratio of an inner diameter of the cylindrical medium in contact with the pulverizing medium to an outer diameter of the pulverizing medium is 2.1 or more. The integrated value of volumes of the pulverizing media relative to a space volume inside the cylindrical medium in contact with the pulverizing medium is more than 25%.

Method for manufacturing pulverized material and vibrating pulverizer

The present invention relates to a process for producing a decrystallized cellulose having a reduced cellulose I-type crystallinity from a cellulose-containing raw material in an efficient manner with an excellent productivity. In accordance with the present invention, there is provided a process for producing a decrystallized cellulose from a raw material comprising at least 20% by weight, based on the weight of the raw material excluding water contained therein, of a cellulose having a cellulose I-type crystallinity of more than 33% as calculated from the following formula:Cellulose-type Crystallinity (%)=[()/]&#xd7;100wherein Iis a diffraction intensity of a lattice plane (002 plane) as measured at a diffraction angle 2&#x3b8; of 22.6&#xb0; in X-ray diffraction analysis; and Iis a diffraction intensity of an amorphous moiety as measured at a diffraction angle 2&#x3b8; of 18.5&#xb0; in X-ray diffraction analysis, the process including the step of treating the cellulose-containing raw material using a media-type mill to reduce the cellulose I-type crystallinity of the cellulose to 33% or less, wherein the cellulose-containing raw material has a bulk density of from 100 to 500 kg/m.

Process for producing noncrystalline cellulose

A cosmetic composition having excellent application feeling and transparency while maintaining covering power which includes (a) composite particles obtained by allowing at least two kinds of particles having different shapes and particle diameters to contact with at least one polymer compound selected from the group consisting of fluorinated polymer compounds, silicone polymer compounds, and mixture thereof, in the presence of supercritical carbon dioxide, and (b) a cosmetic component.

Cosmetic composition

To provide a method for purification of the ionic polymer compound comprising efficiently removing low-molecular impurities, for example, ionic remaining monomers, which are charged identically to the ionic polymer compound from the ionic polymer compound in a shorter period of time. A method for purification of an ionic polymer compound, characterized by removing low-molecular impurities, such as ionic remaining monomers, by the use of an ultrafiltration membrane and/or a reverse osmosis membrane from an aqueous solution containing the ionic polymer compound and low-molecular impurities which are charged identically to the ionic polymer compound, under conditions that a concentration of the ionic polymer compound is from 7 to 20% by weight, and that an amount of charges of the ionic polymer compound in the aqueous solution is 0.30 gram-equivalent/liter or more.

Method for the purification of ionic polymers

Growing community of inventors

Wakayama, Japan

Naoki Nojiri