| 摘要 |
A process for the preparation of organopolysiloxanes which contain at least one unit of the formula(R1O)3-mRmSiO+E,fra 1/2+EE (I)in which R is identical or different and is a hydrogen atom or monovalent, optionally substituted hydrocarbon radical, R1 is identical or different and is a monovalent, optionally substituted hydrocarbon radical having 1 to 8 carbon atoms and m is 0, 1 or 2, which comprises, in a 1st step, reacting organosilicon compounds (1) which contain at least one Si-bonded hydroxyl group with at least one silane (2) of the formula(R1O)4-mSiRm(II)and/or partial hydrolysates thereof, in which R, R1 and m have the above mentioned meaning, in the presence of a fluoride salt (3), and, optionally, in a 2nd step, when the reaction has ended, adding component (4) which can bond fluoride ions.
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