Sumitomo Chemical Company, Limited

Naoto Meki

Tomotoshi Imahase

Hiroaki Fujimoto

Hirotaka Takano

Kazue Nishida

Kenichi Mikitani

Yoriko Ogasawara

Hirosi Kisida

Kimitoshi Umeda

Akira Shuto

Masahiro Tamaki

Kazuo Kimura

Masaru Ishino

Yukio Oguri

Tamon Uematsu

Masayo Sugano

Tetsuya Suzuta

Tsuguhiro Katoh

Tomoyuki Kusaba

Tomohiro Teramae

Kazue Shinsugi

Masahiro Iamaki

Takashi DeGuchi

Propylene oxide is recovered through the use of an additive in a distillation solution, resulting in suppressed side reactions and reduced loss of product. Propylene oxide is produced by oxidizing ethylbenzene in a liquid phase with molecular oxygen to a obtain a reaction liquid containing ethylbenzene hydroperoxide; distilling the reaction liquid to obtain a concentrated solution of ethylbenzene hydroperoxide; further mixing and reacting the concentrated solution with propylene to obtain a mixed solution containing propylene oxide; and distilling the mixed solution to separate and recover propylene oxide. At least one compound selected from aliphatic saturated alcohols having 2 to 4 carbon atoms, allyl alcohol, saturated aliphatic hydrocarbons having 6 or 7 carbon atoms, benzene, ethers, ketones, nitriles, amines, pyridines, diamines, and aminoalcohols is added to the mixed distillation solution in an amount of 0.01-100 parts by weight per 100 parts by weight of propylene oxide.

Process for recovering propylene oxide

The present invention relates to a heterocyclic compound represented by the formula, ##STR1## wherein R.sub.1 is a hydrogen atom, or an alkyl or phenyl group; R.sub.2 is a hydrogen atom, or an alkyl or haloalkyl group; R.sub.3 is a hydrogen atom, or an alkyl or phenyl group, each of R.sub.4 and R.sub.5, which may be the same or different, is a hydrogen atom or an alkyl group; each of Y's, which may be the same or different, is a hydrogen or halogen atom, or an alkyl, haloalkyl, alkoxyl or haloalkoxyl group; R.sub.6 is an alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, haloalkynyl, alkoxyalkyl, alkylthioalkyl or cycloalkyl group, or ##STR2## (in which each of V's, which may be the same or different, is a hydrogen or halogen atom, or an alkyl, haloalkyl, alkoxyl or haloalkoxyl group); Z is an oxygen or sulfur atom; and each of m and n is an integer of 1 to 5 and the production method of same. Said compound is useful as an insecticidal, acaricidal and fungicidal agents.

Pyrazole oxime derivatives, compositions and use

The present invention relates to certain novel amide compound represented by the formula of ##STR1## wherein A is an oxazole and, X, R.sup.1, R.sup.2, R.sup.3, R.sup.4, Y, the ring B, R.sup.5, R.sup.6, l and m are the same as defined in the present specification, its production and an insecticidal and/or acaricidal composition containing it as an active ingredient.

Amide compound and its production and use

The present invention relates to certain novel amide compound represented by the formula of ##STR1## wherein A, X, Y, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and l are the same as defined in the present specification, an insecticidal and/or acaricidal composition containing it as an active ingredient, and a method for exterminating insects and/or acarids which comprises applying it as an active ingredient.

There are disclosed intermediate compounds of the formula, ##STR1## wherein the substitutents of R.sub.1 to R.sub.7 and R.sub.9 have the same meanings as described in the text, for producing a insecticidal and acaricidal pyrazole compound represented by the formula, ##STR2## wherein the substituents of R.sub.1 ' to R.sub.8 and the symbol Z have the specified meanings as described in the text.

Intermediate compounds for an insecticidal and acaricidal pyrazole

There are disclosed a pyrazole compound represented by the formula ##STR1## wherein the substituents of R.sub.1 to R.sub.7 and the symbol Z have the specified meanings as described in the text, an insecticidal, acaricidal and fungicidal composition containing the same, use of said composition for control of insects, acarids and fungi and a method of preparing said compound, and its intermediate.

Hydroxylamine ethers

There are disclosed a pyrazole compound represented by the formula, ##STR1## wherein the substituents of R.sub.1 to R.sub.8 and the symbol Z have the specified meanings as described in the text, an insecticidal and acaricidal composition containing the same, use of said composition for control of insects and mites and a method of preparing said compound, and its intermediate.

Pyrazole compounds, insecticidal and acaricidal compositions and use

There are disclosed a pyrazole compound represented by the formula, ##STR1## wherein the substituents of R.sub.1 to R.sub.7 and the sumbol Z have the specified meanings as described in the text, an insecticidal, acaricidal and fungicidal composition containing the same, use of said composition for control of insects, acarids and fungi and a method of preparing said compound, and its intermediate.

Pyrazole compounds and use thereof

An amide compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are, the same or different, each a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group and R.sup.3 is a 2-furyl group, a 3-furyl group, a 2-thienyl group or a 3-thienyl group, which is useful as an agricultural fungicide.

Amide derivatives, and their production and agricultural fungicides

A heterocyclic compound of the formula: ##STR1## wherein A is an oxygen atom or a sulfur atom;

Growing community of inventors

Kobe, Japan

Naoto Meki