Patent ID: 9481742
Filing Date: 2016-11-01
CPC Classification: B01J,C08F

Claim Text:
1. A continuous process for the manufacture of homopolymers or copolymers by free-radical polymerization of monomer A, C 3 -C 8 monoethylenically unsaturated mono- or dicarboxylic acid or of the anhydrides and salts thereof, and optionally, monomer B, water-soluble, ethylenically unsaturated monomers different from monomer A in an aqueous medium in the presence of at least one water-soluble initiator, the process comprises the following steps: i) optionally, continuously metering the solutions of the monomer A, and the optional monomer B, and a solution of the initiator into a mixing unit comprising at least one micro-mixer and mixing the reactants in the mixing unit, ii) conducting continuous free-radical polymerization in at least one tubular reactor segment at a temperature of from 180° C. to 300° C., wherein the tubular reactor has a specific surface area larger than 50 m