Mitsui Toatsu Chemicals, Incorporated

Omsi Co., Ltd.

Masahiko Asano

Yoh Sano

Hitoshi Yagi

Akihiro Yamaguchi

Hiroshi Takayanagi

Shigeru Iimuro

Hiromi Nakano

Hirotoshi Katsuoka

Toshimiki Shimizu

Masumi Ookita

The oxalic acid aqueous solution filled in an electrolytic tank is electrolyzed with an electrolyzer to produce carbonic acid gas, while ultrasonic wave from an ultrasonic generator is applied to the produced carbonic acid gas bubbles, to form micro bubbles, which is dissolved in said oxalic acid aqueous solution, so as to easily produce carbonic acid gas solution with micro carbonic acid gas bubbles dissolved at a low cost; said carbonic acid gas solution can substitute carbonated spring.

Process for producing carbonic acid gas solution, an apparatus for the same and carbonated water

A first aqueous solution filled in an electrolytic cell () is electrolyzed by applying DC voltage between the electrodesandin said electrolytic cell, to form an oxidation field short of electrons in said aqueous solution; and then, a second aqueous solution with carboxylic acid dissolved in it is mixed into the first aqueous solution in oxidation field state, so that the first aqueous solution in oxidation field state obtains electrons and is deoxidized, and the carboxylic acid is oxidized, to produce carbonic acid gas in said aqueous solution. Therefore, the present invention can be used to produce carbonic acid gas solution at a low cost easily.

Process for producing carbon dioxide solution, production apparatus, and carbonated water

Melt moldable polyamide-imide resins are disclosed which have a glass transition temperature ranging from 120.degree. to 300.degree. C. and have molecule ends blocked with an unsubstituted aromatic group or an aromatic group having a substituent not reactive with amines, isocyanates, carboxylic acids and dicarboxylic acid anhydrides.

Polyamide-imide resins and production thereof

A preparation process of a phenol-based resin composition by conducting a crosslinking reaction of a specific silicone compound in the phenol-based resin in the presence of a specific emulsifier, crosslinking agent and catalyst and by the addition of water to disperse resulting silicone rubber as fine particles in the phenol-based resin. The phenol-based resin of the invention has no time-dependent variation in molding processability and molded products are stable and has no time-dependent change in impact resistance, flexural strength and thermal shock resistance (heat crack resistance), and hence the phenol-based resin composition is used for various molding materials and friction materials which require excellent mechanical strength, crack resistance, thermal shock resistance, stress relaxation resistance or abrasion resistance.

Preparation process of resin composition having phenolic hydroxyl groups

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Kanagawa, Japan

Masahiko Asano