Verfahren zur Herstellung von radikalisch vernetzbaren Copolymerisaten

摘要

A process for the preparation of free-radical-crosslinkable copolymers by polymer-analogous reaction of A) a copolymer (A) comprising a1) from 20 to 85 mol % of a monomer (a1) containing the methacrylic acid structural unit and a2) from 15 to 80 mol % of another free-radical-polymerising monomer (a2), where a3) from 5 to 50 mol % of the total amount of the monomers (a1) and (a2) are monomers (a3) carrying functional groups which are capable of a condensation or addition reaction, with B) an olefinically unsaturated monomer (B) carrying a functional group which is complementary to that of the monomers (a3), characterised in that the polymer-analogous reaction is carried out at from 90 to 150 DEG C and at a mean residence time of from 3 to 20 minutes in highly concentrated solution or in bulk. The free-radical-crosslinkable copolymers which can be prepared by this process are used as binders for powder coatings (paints).