Process for the preparation of organosilicon polymer
AssigneeToshiba Silicone Co., Ltd.
InventorsShigeru Wakamatsu, Keiji Kabeta, Takafumi Imai
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AssigneeToshiba Silicone Co., Ltd.
InventorsShigeru Wakamatsu, Keiji Kabeta, Takafumi Imai
Estimating the term…
A process for the preparation of an organosilicon polymer, which comprises reacting one equivalent of a bis(alkoxysilyl) compound represented by the following general formula: R.sup.1 R.sup.2 R.sup.3 Si--(A).sub.p --SiR.sup.1 R.sup.2 R.sup.3 wherein R.sup.1, R.sup.2 and R.sup.3 each represents the same or different substituted or unsubstituted monovalent hydrocarbon group or an alkoxy group, with the proviso that at least one of R.sup.1, R.sup.2 and R.sup.3 is an alkoxy group; A represents a divalent aromatic group, a divalent conjugated or nonconjugated unsaturated aliphatic group, or a divalent saturated aliphatic group; and p represents an integer of 1 or more, with one or more equivalents of an alkoxydisilane represented by the following general formula: (OR.sup.4).sub.6-n Si.sub.2 (R.sup.5).sub.n wherein R.sup.4 and R.sup.5 each represent the same or different substituted or unsubstituted monovalent hydrocarbon group; and n represents an integer of from 0 to 5, in the presence of an alkali metal alkoxide represented by the following general formula: MOR.sup.6 wherein M represents an alkali metal; and R.sup.6 represents a substituted or unsubstituted monovalent hydrocarbon group.
A process for the preparation of an organosilicon polymer, which comprises reacting one equivalent of a bis(alkoxysilyl) compound represented by the following general formula (I):
Dependencies are inferred from the claim text.