Preparation of sodium oligoorganosiliconates

Sodium oligoorganosiliconates are aqueous-alcoholic solutions of the following composition  

R=CH3 or C2H5 R-CH3, C2H5, H, OH or a fragment of the molecule of the product of the partial hydrolytic condensation of organochlorosilanes. 

The structure of sodium oligoorganosiliconates first of all depends on the type of the original raw stock. 

Alkyltrichlorosilanes are etherified when the weight ratio of alkyltri-chlorosilane and ethyl alcohol is 1 (3.05-K3.1) the etherification is accompanied by gradual replacement of chlorine atoms in alkyltrichlorosilane with ethoxyl groups  

If alcohol is lacking, the reaction can form only chloroethers, e.g. 

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