Masonry treating composition and method

A method of making a mixture containing an alkoxysilane, alkoxy functional oligomers and silanols comprising the steps of forming a solution by combining water with a hydrolyzable silane monomer in a proportion of 0.1 to 0.6 moles of water per mole of silane monomer;

• adding an acid catalyst to the solution and partially hydrolyzing the silane monomer to form silanols and alcohol;
• simultaneously partially condensing the silanols to form alkoxy functional oligomers;
• neutralizing the solution by adding a mild base to the solution;
• heating the solution to a temperature sufficient to remove the alcohol from the solution;
• separating the mild base and any products of neutralization from the solution;
• and isolating a product in the form of an anhydrous organic solvent free mixture of residual hydrolyzable silane monomer, silanols formed by hydrolysis of the silane monomer, lower alkoxy functional oligomers formed by condensation of the silanols, and higher alkoxy functional oligomers formed by condensation of the silanols, the hydrolyzable silane monomer being an organotrialkoxysilane or a mixture of organotrialkoxysilanes selected from the group consisting of alkyltrialkoxysilanes having C1 to C20 alkyl groups on silicon;
• aryltrialkoxysilanes;
• and arylalkyltrialkoxysilanes.