Polymerization of Hexaethylcyclotrisiloxane During the Synthesis of Carbofunctional Oligo(diethylsiloxane diols)статья
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Дата последнего поиска статьи во внешних источниках: 1 апреля 2017 г.
Аннотация:Oligo(diethylsiloxane diols) carrying β-oxyethoxymethyl terminal groups are synthesized for the
first time by the cationic polymerization of hexaethylcyclotrisiloxane in the presence of bis(β-oxyethoxymethyl)tetramethyldisiloxane with the use of sulfuric acid or the cationite KU23 as a catalyst. It is shown that, along with oligo(diethylsiloxane diols), the products of rearrangement of diethylsiloxane chains, such as octaethylcyclotetrasiloxane and higher cycles, are formed. The reaction of dipotassium salts of oligo(diethyl siloxane diols) with chlorosilanes of the formula ClSi(CH3)2CH2O(CH2)2OCOCH3 yields acetoxyterminated oligomers that contain octaethylcyclotetrasiloxane and higher cycles as well.