摘要 |
The invention relates to a process for the preparation of monodisperse poly(meth)acrylate particles by the precipitation polymerisation process, where the monomers M, containing at least 60 % by weight of monomers of the formula I <IMAGE> in which R is hydrogen or methyl and R1 is an alkyl radical having 1 to 8 carbon atoms, an optionally substituted aryl radical or an aralkyl radical, are polymerised in a halogen-free solvent L comprising at least 70 and up to 100 % by weight of cyclohexane, in the presence of a block copolymer containing polystyrene BCP in amounts of 0.1 to 10 % by weight based on the monomers, and in the presence of a percarbonate as initiator in amounts of from 0.02 to 2 % by weight, based on the monomers. |
申请人 |
ROEHM GMBH, 64293 DARMSTADT, DE |
发明人 |
SIOL, WERNER, DR., 64297 DARMSTADT, DE;WOPKER, WILHELM, 64404 BICKENBACH, DE;FELGER, ERWIN, 64295 DARMSTADT, DE;PARUSEL, MARKUS, 64409 MESSEL, DE |