C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 7/08 (2006.01) C07F 7/21 (2006.01) C08G 77/08 (2006.01) C08G 77/10 (2006.01)
Patent
CA 2054357
The instant invention is a catalyzed process for the redistribution of linear, chloride or hydroxy end-terminated polyorganosiloxanes or cyclic polyorgano-siloxanes. Effective catalysts for the described process are alumina, silica-alumina, activated carbon, zeolite and acid clay. The catalyzed redistribution process can be incorporated as an element of a three-stage process. The three-stage process allows control of the yield of cyclic polyorganosiloxanes.
Bourgoin Jodi Ann
Freeburne Steven Kerry
Halm Roland Lee
Naasz Brian Michael
Niswonger David Scott
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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