Process for preparing multifunctional cyclic organosiloxanes

摘要

Multifunctional, cyclic organosiloxane of formula (I) is new: m = 3-6; n = 2-10; R = 1-8 C alkyl and/or 6-14 C aryl; and (A) X = halogen with a = 1-3; or X = OR' or OH with a = 1-2 and R' = 1-8 C alkyl; or (B) X = (OSiR2)pÄ(CH2)nSiYaR3-aÜ with a = 1-3; p = 0-10; and Y = halogen, OR' or OH; or (C) X = (OSiR2)pÄ(CH2)nSiR3-aÄ(CH2)nSiYaR3-aÜaÜ with a = 1-3; p = 0-10; and Y = halogen, OR' or OH. Also claimed are: (i) a method of preparing multifunctional, cyclic organosiloxanes (I); (ii) a method of preparing multifunctional, cyclic organosiloxanes of formula (Ia); and (iii) use of multifunctional, cyclic organopolysiloxane for the production or modification of surface coating agents and as crosslinking agents in condensation cure of organopolysiloxane compositions.