Preparation process of organosilicon compounds and production of silicon carbide
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsMasayoshi Itoh, Ryo Takeuchi, Kenji Iwata
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Abstract
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.
Claims3
A process for the preparation of a silicon-containing polymer which comprises subjecting, to anionic coordination polymerization, a silicon compound represented by the following formula:
- ##STR43## wherein m is 0 or a positive integer of 1 to 20, n stands for 2 or 3, R.sub.1 means hydrogen, an alkyl group, an aryl group or a halogen, R.sub.2 denotes an alkylene or phenylene group, and R.sub.1 and R.sub.2 may contain one or more functional groups such as COOH, NH.sub.2, Cl and OH, the silicon-containing polymer containing recurring structural units represented by the following general formula:
- ##STR44## wherein m is 0 or a positive integer of 1 to 20, n stands for 2 or 3, R.sub.1 means hydrogen, an alkyl group, an aryl group or a halogen, R.sub.2 denotes an alkylene or phenylene group, and R.sub.1 and R.sub.2 may contain one or more functional groups such as COOH, NH.sub.2, Cl and/or OH.
A process for the preparation of a silicon-containing polymer containing recurring structural units represented by the following formula:
- ##STR45## wherein m is 0 or a positive integer of 1 to 20, n stands for 1, 2, or 3, R.sub.1 means hydrogen, an alkyl group, an aryl group or a halogen, R.sub.2 denotes an alkylene or phenylene group, and R.sub.1 and R.sub.2 may contain one or more functional groups such as COOH, NH.sub.2, Cl and OH, which comprises subjecting, to either radical polymerization or ionic polymerization, a silicon compound represented by the following formula:
- ##STR46## wherein m, n, R.sub.1 and R.sub.2 have the same meaning as defined above.
A process for the preparation of a silicon-containing polymer, which comprises subjecting, to radical copolymerization, a silicon compound represented by the following formula:
- ##STR47## wherein m is 0 or a positive integer of 1 to 20, n stands for 1, 2 or 3, R.sub.1 means hydrogen, an alkyl group, an aryl group or a halogen, R.sub.2 denotes an alkylene or phenylene group, and R.sub.1 and R.sub.2 may contain one or more functional groups such as COOH, NH.sub.2, Cl and OH, and an unsaturated hydrocarbon having at least one carbon-carbon double bond per molecule.
Dependencies are inferred from the claim text.