Oximino- and Aminoxy-Silanes

Oximino- and aminoxy-silanes utilized as crosslinking agents in silicone sealants in which acidic reaction products are undesirable 

In the crosslinking of silicone sealants with acyloxysilanes, acids are formed as cleavage products. These are often, for different reasons, undesirable in technical applications. Therefore crosslinking agents with neutral cleavage products have acquired increasing importance. 

The industrially important methyltributanonoximino-silane is formed by reacting methyltrichlorosilane with 2-butanonoxime  

In reactions in solvent, the oxime acts both as a reaction partner and as a base. The oxime-hydrogen chloride-adduct can be isolated as a separate liquid phase. By reacting with 

Aminoxysilanes can be obtained by reacting hydroxyl-amines with chlorosilanes, whereby the hydrogen chloride formed is removed by non-reacting bases. 

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