Base-catalyzed process for preparing hydrogen-containing...

Details Base-catalyzed process for preparing hydrogen-containing... Base-catalyzed process for preparing hydrogen-containing...

C - Chemistry, Metallurgy

08

G

C08G 77/12 (2006.01) C08G 77/08 (2006.01)

Patent

CA 2133166

The present invention relates to a process wherein a mixture containing (A) organosilicon compounds selected from (Al) organosilanes (A2) organosiloxanes with the proviso that component A has at least 0.01 - 4 mole of alkoxy groups per mole of silicon atoms and that at least a part of the organosilicon compounds of the component A comprises Si-bonded hydrogen, (B) at least 0.5 mole of water per mole of alkoxy groups in component A, and (C) optionally a water-miscible solvent, is reacted in the presence of (D) ammonia, a primary or secondary C1-C4-alkylamine or a compound which liberates ammonia or primary or secondary C1-C4-alkylamine on reaction with water to form organopolysiloxanes containing Si-bonded hydroyen.

La présente invention concerne un procédé dans lequel on fait réagir un mélange contenant (A) des composés organosiliciés choisis parmi (Al) les organosilanes, (A2) les organosiloxanes, à la condition que le constituant A comporte au moins 0,01 - 4 moles de groupes alcoxy par mole d'atomes de silicium et qu'au moins une partie des composés organosiliciés du constituant A comprend de l'hydrogène lié au Si, (B) au moins 0,5 mole d'eau par mole de groupes alcoxy dans le constituant A, et (C), facultativement, un solvant miscible dans l'eau, en présence (D) d'ammoniac, d'une alkylamine en C1-C4 primaire ou secondaire ou d'un composé qui libère de l'ammoniac ou une alkylamine en C1-C4 primaire ou secondaire par réaction avec de l'eau pour former des organopolysiloxanes contenant de l'hydrogène lié au Si.

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