Process for the production of ethers of hydroxymet

专利名称：Process for the production of ethers of

hydroxymethyl polymethyl siloxanes

发明人：SIMMLER WALTER申请号：US35155964申请日：19640312公开号：US3297735A公开日：19670110

摘要：Methyl(organo-oxymethyl)siloxanes are produced by a process which comprisesreacting at a temperature above 50 DEG C. an aliphatic or aromatic hydroxy-compoundwith a bromine-substituted methylpolysiloxane of the general formula:- wherein X standsfor a radical R or the radical Br-CH2-and each R stands for methyl or a recurring

structural unit of the general formula:- (the siloxane groups recurring as often as desireduntil the linear or branched chains terminate in R=CH3), and a tertiary nitrogen base,using for each gram-atom of bromine at least 1 gram-equivalent each of the hydroxy-compound and the nitrogen base, and conducting the reaction in such a manner that thenitrogen base is available to the bromine compound only in the presence of the hydroxy-compound. The hydroxy-compounds specified are monohydric or polyhydric alcohols,monohydric or polyhydric phenols, ether alcohols, polyalkylene glycols, polyalkyleneglycol monoalkyl ethers, glycol monoesters and esters of aliphatic or aromatichydroxycarboxylic acids. Many examples are given. The products of the invention areuseful as heat resistant surface-active agents and as intermediates for modifying oils,elastomers and resins of organopolysiloxanes.

申请人：FARBENFABRIKEN BAYER AKTIENGESELLSCHAFT

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