Kao Corporation

Hiromasa Matsumoto

Katsumi Kita

Mitsuru Uno

Shunsuke Watanabe

Kazushi Oshino

Yasuyuki Fujii

Hisakazu Furugaki

Makio Tetsu

Eiko Tamura

Hidetake Nakamura

Fumiko Sazanami

Yoshitaka Kitsunai

Sumie Matsuoka

Manabu Hosoya

The present invention is a method for producing a vesicle composition having an aqueous phase as a continuous phase, the method including a step of dissolving an oil phase containing component (A) a branched fatty acid having a predetermined structure; component (B) a tertiary amine having a predetermined structure; and component (C) an organic acid having 1 to 10 carbon atoms at a temperature that is equal to or higher than a melting point of the oil phase, and a step of carrying out mixing while adding the aqueous phase to the oil phase which is dissolved.

Method for producing a vesicle composition

A toothpaste filled in a container which has two chambers and is capable of simultaneously discharging two different compositions filled respectively in the two chambers when the main body of the container is pressed, wherein a ratio of a storage modulus G' of Composition (A) filled in one chamber to a storage modulus G&#x2032; of Composition (B) filled in the other chamber falls within a range of from 0.6 to 1.4. By controlling the ratio, it is possible to stably discharge from the container storing these two compositions separately predetermined amounts of these two compositions which will otherwise cause a time-dependent change if they are pre-mixed thereby failing to attain the purpose of their addition.

Toothpaste

Ether compounds, which are useful as solvents, cosmetics, detergents, lubricants, emulsifiers and so on, are produced by reacting (a) a hydroxy compound with a carbonyl compound of (b) a carbonyl compound under hydrogen atmosphere in the presence of a catalyst with ease and at a low cost. The reaction is carried out while removing out produced water by using a dehydrating agent during the reaction; by distilling off the water by azeotropic dehydration and the like; or by blowing gases such as hydrogen gas to flow through the reaction system.

Process for producing ether compound

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Tokyo, Japan

Hiromasa Matsumoto