INFLUENCE OF MACROSCOPIC FACTORS ON THE COMPOSITION OF THE PRODUCTS OF COHYDROLYSIS OF TRIORGANOCHLOROSILANES

The composition of the products of heterogeneous cohydrolysis of trime thyl- and dimethylphenylchlorosilanes by excess aqueous ammonia (4-5% solution) is determined by the regime of heterofunctional condensation of the initial chlorosilanes with the products of their hydrolysis, t riorganosilanols. In a diffusion regime, hexaorganodisiloxanes are for med because of the limited possibility of removing silanols from the r eaction zone, while silanols are predominantly formed in a kinetic reg ime. The influence of the nature of the solvent and surfactant and the intensity of stirring of the reaction mixture on the composition of t he final products of hydrolytic cocondensation of triorganochlorosilan es is considered.