Mitsui Toatsu Chemicals, Incorporated

Masayoshi Itoh

Kenji Iwata

Ryo Takeuchi

Tomohiro Abe

Hiroharu Miyagawa

Kaoru Inoue

Mineo Kobayashi

Noriyuki Yanagawa

Kyogo Koizumi

Kazumi Mizutani

Motoo Kawamata

Masanori Osawa

Masami Murakami

Masahiro Kono

Tetsura Utsumi

Toshihiro Toyoda

Keiichi Ikeda

Disclosed herein is a process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.

Production process of silicon carbide from organosilicon compounds

A process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst. A process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes. A process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.

Preparation process of organo silicon compounds and production process

Disclosed herein are a novel process for the preparation of alkylsilanes and alkenyl silanes by hydrosilylation of their corresponding silanes and unsaturated hydrocarbons in the presence or absence of a catalyst, a process for the preparation of polyalkenylsilanes (some of which are novel high molecular compounds) by the anionic coordination polymerization, radical polymerization or ionic polymerization of the alkenylsilanes, and a process for the production of silicon carbide by using these polyalkenylsilanes as prepolymers.

Preparation process of organosilicon compounds and production of silicon

A process for preparing an organic silicon compound is here disclosed which comprises the step of reacting a halogenated hydrocarbon selected from the group consisting ##STR1## wherein each of X.sup.1 to X.sup.16 is selected from the group consisting of hydrogen, an alkyl group, alkenyl group, phenyl group, naphthyl group, alkoxy group, acyl group, alkylamino group and dialkylamino group having 1 to 20 carbon atoms which are unsubstituted or substituted and a halogen atom; and each of at least one of X.sup.1 to X.sup.4, at least one of X.sup.8 to X.sup.10 and at least one of X.sup.11 to X.sup.16 is a halogen atom, with a silane selected from the group consisting of SiH.sub.4, Si.sub.2 H.sub.6 and Si.sub.3 H.sub.8.

Process for preparing organic silicon compound

A process for producing silanes represented by the general formula SI.sub.n H.sub.2n+2 wherein n is 1 or 2, which comprises (a) preparing a silicon-magnesium alloy containing at least one element selected from the goup consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component element; (b) reacting the alloy containing the third component element with an acid in an ammonia solvent; and (c) thus, varying the ratio of Si.sub.2 H.sub.6 formed to SiH.sub.4 formed.

Process for producing silanes

A process for disproportionating silanes, which comprises contacting a silane having at least one Si--H bond represented by the general formula

Process for disproportionating silanes

A process for producing silicon hydrides represented by the general formula Si.sub.n H.sub.2n+2 wherein n is a positive integer of 1 to 6, which comprises reacting a silicon-containing alloy with an aqueous solution of an acid in the presence of at least one inert organic solvent having a boiling range of from -60.degree. C. to 250.degree. C.

Process for producing silicon hydrides

Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.

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Yokohama, Japan

Masayoshi Itoh