Continuous hydroformylation of olefinically unsaturated compounds

Abstract From the Canadian patent

12 - 0.Z. 0050/38561, Abstract of the Disclosure: Olefinically unsaturated compounds are hydroformylated continuously the olefin, being passed into the lower region of the reactor under, from 1 to 40 bar and at from 50 to 140°C with the aid of a rhodium complex as a catalyst in a hydroformylation reactor having a liquid reaction zone which occupies about 60-85% of the reactor volume, the gaseous products and reactants being removed from the hydroformylation reactor the products being isolated and the major part of the remaining gas being recycled to the reactor by the cycle gas method, by a process in which from 20 to 80% by volume of the cycle gas is fed into the hydroformylation reactor …