Sumitomo Chemical Company, Limited

Miyuki Oikawa

Masami Fukao

Isao Kurimoto

Takayuki Higashii

Hideki Ushio

Shinichi Yachigo

Manji Sasaki

Naoki Inui

Hideo Nagasaki

Chinehito Ebina

Yukihiro Honda

The present invention provides a process for producing a cycloalkanone oxime by conducting a continuous ammoximation reaction in the presence of a titanosilicate catalyst with supplying a cycloalkanone, hydrogen peroxide, ammonia and an organic solvent into the reaction system, wherein the reaction temperature is from 90&#xb0; C. to 120&#xb0; C. and the supplying amount of the organic solvent is not more than 2 times by weight of that of the cycloalkanone.

Process for producing cycloalkanone oximes

A process for producing an oxime is provided, wherein the process comprises the step of reacting a ketone, hydrogen peroxide and ammonia in the presence of a crystalline titanosilicate having MWW structure under the condition that the ammonia concentration in the liquid portion of the reaction mixture is about 1% by weight or more. By the process, an ammoximation reaction of the ketone can be carried out with a high conversion of the ketone and a high selectivity to the oxime corresponding to the ketone, thereby producing the oxime with a high yield.

Process for producing oxime

In producing cyclohexanone oxime by a method comprising the step of reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of titanium silicate, a brand-new titanium silicate and a recycled titanium silicate which has been recovered from a production method of cyclohexanone oxime are used. In accordance with the present invention, cyclohexanone is subjected to ammoximation by hydrogen peroxide and ammonia with suppressing the degradation- of titanium silicate as a catalyst, to produce cyclohexanone oxime with a high yield.

Method for producing cyclohexanone oxime

There are disclosed imine compounds of formula (7) and (11), and processes for preparing the same:

Process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid, and salt thereof

A cyclohexanone oxime is produced in a method comprising the step of reacting a cyclohexanone with a hydrogen peroxide and an ammonia in the presence of a titanium silicate and a silicon compound other than the titanium silicate. In the method, the reaction is conducted with suppressing the inactivation of the titanium silicate as a catalyst, to produce the cyclohexanone oxime with a high yield.

Process for producing optically active 3,3,3-Trifluoro-2-Hydroxy-2-Methylpropionic acid, and salt thereof

There are disclosed a process for producing the optically active cyclic amino acid ester derivative of the formula (I):

Optically active cyclic amino acid ester derivatives and processes for producing the same

A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.

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Niihama, Japan

Miyuki Oikawa