Method for the preparation of organopolysiloxane.

摘要

There is disclosed a novel method for the preparation of an organopolysiloxane which has two or three diorganohydrogensiloxy groups at one and only one end of the molecular chain terminal. The method of the invention is particularly useful in that it produces high yields of the desired organopolysiloxane. The method comprises causing a condensation reaction between (A) a hydrogen or lithium terminated polysiloxane and (B) an organopolysiloxane having two or three diorganohydrogensiloxy groups et one terminal of the molecular chain and a halogen at the other terminal of the molecular chain.