Patent ID: 7968658
Filing Date: 2011-06-28
Classification: B01J,B29B,C08F

Abstract:
1. A process for producing a polymer by spray polymerization of a monomer composition comprising a) at least one water soluble ethylenically unsaturated monomer, the solubility of the monomer a) in water being not less than 1 g/100 g of water, b) at least one initiator, c) water, and d) at least one hydrophobic, inert liquid d), the solubility of the liquid d) in water being less than 5 g/100 g of water and the liquid d) comprising no polymerizable groups, wherein an aqueous phase is dispersed in the liquid d) and the reaction is carried out in a reactor at 70° C. to 250° C. in the presence of a carrier gas which is preheated to the reaction temperature upstream of the reactor.