METHOD OF PRODUCING TERTIARY AMINE GROUP-CONTAINING (METH)ACRYLATE COPOLYMER BY FREE-RADICAL SOLUTION POLYMERISATION Russian patent published in 2015 - IPC C08F220/18 C08F220/34 C08F2/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a tertiary amine group-containing (meth)acrylate copolymer by free-radical solution polymerisation of a mixture of monomers, containing: a) 30-70 wt % alkyl ether of acrylic acid or methacrylic acid with 1-4 carbon atoms in alkyl groups, b) 70-30 wt % alkyl ether of acrylic acid or methacrylic acid with a tertiary amine group in the alkyl radical and c) 0-10 wt % other copolymerisable vinyl monomers. The mixture of monomers is mixed with one or more polymerisation initiators, optionally one or more chain-terminating agents and one or more solvents, and a polymerising mixture is obtained. The mixture is polymerised at 30-120°C for 2-24 hours to form a styrene polymer which degassed by distillation or extrusion to obtain a copolymer.

EFFECT: obtaining a copolymer with molecular weight (M_w) of 25000-75000 g/mol, polydispersity of 2,1-2,9 and residual solvent content of less than 1000 ppm.

7 cl, 4 tbl