[EN] PROCESS FOR SYNTHESIZING ALKENYL DISILOXANE<br/>[FR] PROCÉDÉ DE SYNTHÈSE D'ALCÉNYL DISILOXANE
申请人:DOW SILICONES CORP
公开号:WO2021119443A1
公开(公告)日:2021-06-17
Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with a bis-hydrido terminated alkyl disiloxane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the bis-hydrido terminated alkyl disiloxane is about 1:10 to about 10:1. The alkenyl halosilane and bis-hydrido terminated alkyl disiloxane are mixed at about 20 °C to about 45 °C. In an example, no organic solvent is present. The reaction product is separated and washed with saturated NaHCO3 solution (e.g., sodium bicarbonate).
[EN] PROCESSES FOR SYNTHESIZING UNSYMMETRICAL DISILOXANES<br/>[FR] PROCÉDÉS DE SYNTHÈSE DE DISILOXANES ASYMÉTRIQUES
申请人:DOW SILICONES CORP
公开号:WO2021119437A1
公开(公告)日:2021-06-17
Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20 °C to about 45 °C. The reaction product is separated and washed with saturated alkali carbonate solution.