Nippon Shokubai Co., Ltd.

Dai-ichi Kogyo Seiyaku Co., Ltd.

Other

Taketo Toba

Fumihide Tamura

Kazuo Takei

Hiroyuki Ikeuchi

Michiyuki Kono

Manabu Kikuta

Toshiaki Matsunaga

Masahito Nishiura

Shigetaka Takamiya

Hiromoto Katsuyama

Koichiro Saeki

Keiichiro Mizuta

Taisuke Kasahara

Toshiaki Kuriyama

Satoshi Ishida

Toshifumi Nishida

Ritsuo Kitada

Yuji Hagiwara

Masashi Yukitake

Kazuhiko Murata

Takao Nishihata

Takao Yokohashi

Hiroshi Tanaka

Masaki Tezuka

Takanori Ochi

Kazunobu Ohata

The present invention provides a method of producing a tetracyanoborate-containing ionic compound in a milder condition more efficiently and less expensively than conventional methods, and a tetracyanoborate-containing ionic compound having a reduced content of impure components. An ionic compound of the present invention is represented by the following general formula (I), has a content of fluorine atom-containing impurities of 3 mol % or less per 100 mol % of the ionic compound, and a method for producing an ionic compound represented by the general formula (I) of the present invention comprises a step of reacting starting materials containing a cyanide and a boron compound. (In the formula, Ktdenotes an organic cation [Kt]or an inorganic cation [Ke]; and m denotes an integer of 1 to 3.)

Ionic compound, method for producing the same, and ion-conductive material comprising the same

To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the container at a rate not lower than prescribed. Minor volatiles are efficiently removed from the resin in an evaporation tank having a stirring blade. For protecting the dried resin from water, a dry gas is introduced into and air is purged from an empty packaging container whereafter the resin is charged into the container is sealed. By controlling solvent content and visocity of the resin and loading it into a temperature-controlled transportation container and/or unloading it out of the transportation container by the use of a pump, good subsquent processability of the resin and prevention of deterioration thereof are ensured.

Method for drying nonionic alkylene oxide-type water-soluble resin, method for packaging it, and method for transporting it

The present invention provides a production process, in which, when an ethylene oxide copolymer is obtained, conditions for obtaining this copolymer having a desirable molecular weight with ease and good reproducibility are provided. The production process for an ethylene oxide copolymer, according to the present invention, comprises the step of carrying out polymerization of a monomer mixture under stirring in a solvent, thereby obtaining the ethylene oxide copolymer, wherein the monomer mixture includes ethylene oxide and a substituted oxirane compound of a structural formula (1) as essential raw materials; with the production process being characterized in that the stirring is carried out by a stirring power of not less than 0.6 kW/m.

Production process for ethylene oxide copolymer

The present invention provides a novel production process for an ethylene oxide resin, in which, when the ethylene oxide resin is obtained, it is arranged that the resin should contain no antistatic agent, and further its water content is also easily controlled in not more than a definite amount, and the thermal damage of the above resin is prevented, and besides, the reduction of the cost can also be actualized. The production process for an ethylene oxide resin, according to the present invention, comprises the step of carrying out devolatilization of a solvent from a polymerization reaction liquid containing the solvent, thereby obtaining the ethylene oxide resin; with the production process being characterized by arranging that: after the devolatilization, the resin should have a solvent concentration of 0.01 to 30 weight % and a water content of not more than 200 ppm, and the resin should contain no antistatic agent.

Production process for ethylene oxide resin

This invention provides a production process by which a polymer having a hydroxyl group at both terminals can be easily obtained with a cheap price and good efficiency from a wide field of vinyl-based monomers including polar ones. In this process, a polymerization reaction of a vinyl-based monomer (a) is performed by using hydrogen peroxide (b) and, on this occasion, either one or both of a hydrogen peroxide-decomposing accelerator (c) and an amphiphilic compound (d) are further used and any component other than the (a), (b), (c) and (d) is not substantially used.

Process for producing polymer having hydroxyl group at both terminals

This invention provides a process by which a polymer having a hydroxyl group at both terminals can be easily obtained with a cheap price and good efficiency from a wide field of vinyl-based monomers including polar ones. The process is arranged in such a manner that the polymerization of a vinyl-based monomer (a) is performed in the presence of an alcohol (b) having no addition-polymerization reactivity by using an initiator (c) consisting essentially of a peroxide and, on this occasion, at least one of catalysts (d) selected from a group consisting of an organic sulfonic acid compound having no addition-polymerization reactivity and an inorganic acid is further used and a reactor does not substantially contain any component other than the (a), (b), (c) and (d).

Process for producing polymer

Process for producing polymer having hydroxyl groups at both terminals

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Takarazuka, Japan

Taketo Toba