Mitsubishi Petrochemical Company Limited

Mitsumasa Kaitoh

Akiyoshi Ohnishi

Hideki Kurokawa

Shoichiro Mori

Hiroyuki Omori

Hiroshi Yui

Mitsutaka Miyabayashi

Makoto Takeda

Manabu Hayashi

Eiki Yasukawa

Kazuhito Miyoshi

Teruhiko Ishii

Kikuko Miyata

Compounds useful as a stabilizer for a variety of organic materials of an intermediate thereof, or as an intermediate of medicines or agricultural chemicals are disclosed, which are cyclohexylamine derivatives represented by the general formula [I]: ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an acyl group having 2 to 7 carbon atoms or an arylalkyl group having 7 to 10 carbon atoms; R.sup.2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sup.3 and R.sup.4 both represent a hydrogen atom, or one of R.sup.3 and R.sup.4 represents a hydrogen atom and the other represents a group --CH.sub.2 --R.sup.5, or R.sup.3 and R.sup.4 together form a group .dbd.CH--R.sup.5, in which R.sup.5 represents an unsubstituted or C.sub.1 -C.sub.4 alkyl substituted phenyl group, a 2-furyl group, a cyclohexyl group or a 2-tetrahydrofuryl group; X represents an alkylene group having 1 to 3 carbon atoms; and n denotes 1 or 2. When the compound is used as a stabilizer, it exhibits little bleedout and high photostabilizing effect.

Cyclohexylamine compounds useful as a stabilizer for organic materials

Disclosed is a piperidine derivatives of a formula: ##STR1## wherein R.sup.0 indicates a hydrogen atom or a group R--CO).sub.n where R is an alkyl, alkylene or arylene group capable of having 1 to 4 carboxylic group;

Piperidine derivatives as photostabilizer

Disclosed is a piperidine derivatives of a formula: ##STR1## wherein: R.sup.o indicates a hydrogen atom or a group R--CO).sub.n where R is an alkyl, alkylene or arylene group capable of having 1 to 4 carboxylic group;

Piperdine derivatives

Disclosed is an electrode for secondary battery, which comprises lithium or an alkali metal composed mainly of lithium doped as the active substance in a carrier composed of a mixture of a carbonaceous material satisfying the following conditions (A) and an organic polymer having ion conductivity of lithium. (A) a carbonaceous material with a hydrogen/carbon (H/C) atomic ratio of less than 0.15, a spacing (d.sub.002) of the (002) plane according to the X-ray wide angle diffraction method of 3.37 to 3.75 .ANG. and a crystallite size in the c-axis direction (Lc) of 5 .ANG. or more.

Electrode for secondary battery

A dibenzylidenesorbitol derivative having at least one nuclear substituent selected from an ester group represented by --COOR.sup.1 and an amido group represented by --CONR.sup.2 R.sup.3, wherein R.sup.1 represents a hydrocarbon group having 1 to 20 carbon atoms, and R.sup.2 and R.sup.3 are identical or different and each independently represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group.

Sorbitol derivatives

A process for preparing a pentaerythritol-tetrakis(3-alkylthio-propionate) represented by the general formula: ##STR1## wherein R represents an alkyl group having from 8 to 30 carbon atoms, is disclosed, comprising reacting an alkylmercaptan having from 8 to 30 carbon atoms with an acrylic ester or an acrylic amide to form a 3-alkylthio-propionic acid ester or a 3-alkylthio-propionic acid amide, hydrolyzing the ester or amide to form a 3-alkylthio-propionic acid, and then reacting this product with pentaerythritol. The desired product can easily be obtained at high purity and high yield by this process.

Process for preparing pentaerythritol-tetrakis(3-alkylthio-propionate)

Crude 2-methyleneglutaronitrile containing as impurities a metal halide, a trialkylamine, and the trimer or a higher polymer of acrylonitrile can be effectively purified by treating the crude 2-methyleneglutaronitrile with hydrochloric acid, sulfuric acid or nitric acid of a concentration of 1 to 30% by weight and then subjecting the treated methyleneglutaronitrile to vacuum distillation.

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Yokkaichi, Japan

Mitsumasa Kaitoh