ALKOXYSILANE PRODUCTION PROCESS Russian patent published in 2008 - IPC C07F7/04 

FIELD: synthesis of organosilicon compounds.

SUBSTANCE: invention relates to production of alkoxysilanes of general formula R_nSi(OR¹)_4-n, wherein R and R¹ are lower alkyls and n = 0 or 1, which can be used in manufacture of silane-linking agents, organosilicon varnishes, resins, and the like. Invention proposes production of alkoxysilanes via etherification of chlorosilane at 0-30°C followed by two-step desorption of hydrogen chloride. First-step desorption is carried out at 40-80°C. Second-step desorption is carried out in reactor-desorber, which is tubular apparatus constituted by seven in series connected heating jacket-equipped sections, wherein alcohol is fed to sections 2-5 in amount 25-30% of the weight of reaction mass while maintaining temperature 70°C in the first section rising to 150°C in the last section. From hydrogen chloride released in etherification and desorption stages, acid alcohol can be condensed and then recycled to process.

EFFECT: increased productivity of process and stabilized quality of product.

2 cl, 3 ex