Process for the continuous production of liquid silicone...

Details Process for the continuous production of liquid silicone... Process for the continuous production of liquid silicone...

C - Chemistry, Metallurgy

08

L

C08L 83/04 (2006.01) C08K 9/06 (2006.01)

Patent

CA 2095572

Dp/bo/4E-w Process for the continuous production of liquid silicone rubbers ABSTRACT A Process for the continuous production of crosslinking silicone rubbers based on crosslinkable diorganopolysiloxane is disclosed wherein the process comprises a) mixing diorganopolysiloxane with at least one filler and at least one coating agent, b) in-situ coating of the filler subject to continuous separation by distillation of excess coating agent before or during the coating reaction and recycling of the condensates thereof, c) degassing the mixture from step b) and, optionally, re-dilution with diorganopoly- siloxanes, and d) mixing the mixture from step c) with a crosslinking agent or catalyst, wherein the average total residence-time of the diorganopolysiloxane in steps a) to c) amounts to more than 15 minutes. Le A 27 982-Foreign Countries

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