Process for the recovery of gaseous or vaporous monomers from reaction off-gases

A process for the recovery of polymerizable olefinically unsaturated monomers having at atmospheric pressure boiling points between -20.degree. C and +40.degree. C from reaction off-gases which contain from 10 to 50% by volume of these monomers, wherein the reaction off-gases are treated with olefinically unsaturated comonomers from the group consisting of styrene and monoolefinically unsaturated monocarboxylic acid esters of 4 to 8 carbon atoms, which comonomers are liquid at 50.degree. C at atmospheric pressure and with which, and/or in which, the olefinically unsaturated low boiling monomers are subsequently reacted.

A process for the recovery of polymerizable olefinically unsaturated monomers having at atmospheric pressure boiling points between -20.degree. C and +40.degree. C from reaction off-gases which contain from 10 to 50% by volume of these monomers, wherein the reaction off-gases are treated with inorganic inert solvents which are suitable media for carrying out a solution polymerization and which are liquid at 50.degree. C at atmosheric pressure and in which the olefinically unsaturated low boiling monomers are subsequently reacted.

A polymerization process in which low-boiling olefinically unsaturated monomer having a boiling point at atmospheric pressure between -20.degree. and 40.degree. C is copolymerized with an olefinically unsaturated comonomer in an inert material which is liquid at 50.degree. C, the comonomer and the inert liquid material boiling above 50.degree. C at atmospheric pressure, and in which a reaction off-gas is generated containing from 10 to 50% by volume of the low-boiling olefinically unsaturated monomer, wherein the reaction off-gas is treated with olefinically unsaturated comonomers from the group conisting of styrene and monoolefinically unsaturated monocarboxylic acid esters of 4 to 8 carbon atoms, and which boils above 50.degree. C, under conditions such that said comonomers are liquid and do not react with the low-boiling monomer, whereby low-boiling monomer is extracted from the eaction off-gas, and the reuslting liquid containing low-boiling monomer and comonomers is employed in the polymerization process for manufacture of further amounts of copolymer.

A polymerization process in which a low-boiling olefinically unsaturated monomer having a boiling point at atmospheric pressure between -20.degree. and 40.degree. C is copolymerized with an olefinically unsaturated comonomer in an inert material which is liquid at 50.degree. C, the comonomer and the inert liquid material boiling above 50.degree. C at atmospheric pressure, and in which a reaction off-gas is generated containing from 10 to 50% by volume of the low-boiling olefinically unsaturated monomer, wherein the reaction off-gas is treated with organic inert solvents which are suitable media for carrying out a solution polymerization and which boils above 50.degree. C, under conditions such that said solvents are liquid and do not react with the low-boiling monomer, whereby low-boiling monomer is extracted from the reaction off-gas, and the resulting liquid containing low-boiling monomer and solvent is employed in the polymerization process for manufacture of further amounts of copolymer.