Method of reducing activity of silicone polymers

Details Method of reducing activity of silicone polymers Method of reducing activity of silicone polymers

C - Chemistry, Metallurgy

08

G

402/18

C08G 77/32 (2006.01) C08G 77/06 (2006.01) C08G 77/34 (2006.01)

Patent

CA 1285691

METHOD OF REDUCING ACTIVITY OF SILICONE POLYMERS ABSTRACT A method of reducing the reaction between polydiorganosiloxane gum and reinforcing silica, which causes "creping", has been discovered. The method mixes crude polydiorganocyclosiloxane with a carbonate or bicarbonate salt of potassium or cesium, heats the mixture, then filters to remove the salt. The treated material can be further purified by stripping this filtered material to give a polydiorganocyclosiloxane having a hydroxyl content of less than 1 part per million of polydiorganocyclosiloxane.

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