Patent ID: 6046293
Filing Date: 2000-04-04
Classification: C08G

Abstract:
A method of making an alternating siloxane copolymer comprising (A) reacting (i) a non-aqueous organic solvent solution as a liquid phase containing a dihaloorganosilane or an .alpha.,.omega.-dihaloorganosiloxane, at or near an interface formed by the nonaqueous organic solvent solution, and (ii) a solvent-free, immiscible, non-aqueous, solid phase containing an alkali metal silanolate of the formula R.sub.x Si(OM).sub.4-x or an alkali metal siloxanolate of the formula MO(R.sub.2 SiO).sub.n M, wherein R is an alkyl radical of 1-6 carbon atoms, an aryl radical, an alkenyl radical, or an alkylamino radical; x is 0-3; n is 2-20; M is an alkali metal in Group IA of the Periodic Table; and (B) recovering the alternating siloxane copolymer.