C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 77/46 (2006.01) C08G 65/28 (2006.01) C09D 183/12 (2006.01) C09J 175/04 (2006.01) C09J 183/12 (2006.01) C10M 107/50 (2006.01)
Patent
CA 2617399
A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.
Chung James Y.j.
Dormish Jeffrey F.
Haider Karl W.
Hortelano Edwin R.
Starcher Rick V.
Bayer Materialscience Llc
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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