Mitsubishi Petrochemical Company Limited

Kunimasa Takahashi

Haruo Shibatani

Takashi Kameda

Makoto Imanari

Hiroshi Iwane

Yoshihisa Watanabe

Makoto Takeda

Takashi Yokoi

Eiji Taniyama

Masato Yoshikawa

Yuji Ozawa

Teruo Teranishi

Manufacture of granulated self-sintering carbonaceous pulverulent body suitable for precise complicated molding in high speed productivity is conducted in the presence of a wetting agent and a binding agent in the water-pulverulent mixture by using spray drying machine in the atmosphere of the hot air kept at a temperature up to 200.degree. C. optionally in admixture with superheated steam kept at a temperature up to 200.degree. C.

Production of carbonaceous powders and their granulation

A graphitic or carbonaceous molding comprising graphite powder and a mesophase-containing pitch is obtained by suspending graphite powder in a tar, heating the suspension while blowing an inert gas therein to form the mesophase-containing pitch on the graphite particles to obtain carbonaceous precursors and molding/carbonizing or graphitizing the carbonaceous precursors.

Graphitic or carbonaceous moldings and processes for producing the same

A process for producing a mesophase pitch by heating a carbonaceous pitch at 350.degree. to 550.degree. C. wherein the heat treatment is conducted while supplying a hydrogen donor to the pitch. The mesophase pitch thus produced has an excellent spinnability.

Process for producing mesophase pitch

Mesophase pitch containing quinoline soluble mesophase is produced from a pitch having a specific aromatic hydrogen content with a short heat treatment time without conducting any special treatment such as extraction.

A process for producing an alkenyl-substituted aromatic compound which comprises catalytically reacting an alkyl-substituted aromatic compound in the vapor phase in the presence of molecular oxygen and a catalyst composed of palladium metal and a metal halide compound supported on an alumina carrier to convert it to the corresponding alkenyl-substituted aromatic compound, wherein said reaction is carried out in the presence of a catalyst composed of palladium metal and a metal halide compound supported on a carrier consisting substantially of .alpha.-alumina.

Process for producing alkenyl-substituted aromatic compounds and

A process for producing a halobiphenyl derivative represented by the following formula (I) comprises dehydrogenating a cyclohexylhalobenzene represented by the following formula (II) under such conditions that substantially no dehalogenation occurs. ##STR1## wherein X represents a halogen atom, and each of R.sup.1 and R.sup.2 independently represents a group represented by the formula ##STR2## wherein A represents carboxyl or an alkoxycarbonyl group and R represents a hydrogen atom or a lower alkyl group; an alkylcarbonyl; alkenyl; alkynyl; alkyl; aryl; arylcarbonyl; hydroxyalkyl; cyanoalkyl or cyanoalkenyl group.

Process for producing biphenyl derivatives

A process for preparing corresponding alkyl-substituted aromatic compounds by the gas phase catalytic dehydrogenation of vinylcycloalkenes in the presence of a dehydrogenation catalyst supported on a carrier, said catalytic dehydrogenation being carried out

Growing community of inventors

Ami, Japan

Kunimasa Takahashi