VERFAHREN ZUR HERSTELLUNG VON POLYDIORGANOSILOXANEN MIT HYDROXYARYLOXY-ENDGRUPPEN.

摘要

Polydiorganosiloxanes, (A), having alpha, omega-hydroxy-aryloxy end gps. are prepd. by reacting, alpha,omega-bisacyloxy and gp.-contg. polydiorganosiloxanes (B), with diphenols in molar ratio 1:2 to 1:20. Inorganic bases are opt. used in at least stoichiometric proportions w.r.t. moles of charged (B). Some of starting materials (B) are known (EP---3285 or EP---2892).