| 摘要 |
Linear hydroxy endblocked linear polyorganosiloxanes, linear chloro-endblocked polyorganosiloxanes, and mixtures thereof, are redistributed in a process by contacting the linear polyorganosiloxanes, with a diorganodichlorosilane having the formula R'<SUB>2</SUB>SiCl<SUB>2</SUB>, wherein R' is an alkyl group containing 1-8 carbon atoms; in the presence of an aqueous hydrochloric acid catalyst; to form a redistributed mixture containing cyclic polyorganosiloxanes and chloro-endblocked polyorganosiloxanes. The process generates less amounts of undesired branched siloxane species than processes which utilize an alumina catalyst.
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