Patent ID: 7750096
Filing Date: 2010-07-06
Classification: C08F

Abstract:
1. A process for the preparation of an aqueous polymer dispersion comprising reacting at least one olefin in the presence of at least one polymerization catalyst and one emulsifier in an aqueous medium, wherein the polymerization catalyst is produced in an in situ reaction by reacting the ligand compound 2,6-dichloro-para-benzoquinone (Ia) and/or 2,3,6-trichloro-para-benzoquinone (Ib) with a phosphine compound PR or with a diphosphine compound R and with a metal compound of the formula M(L where: M is a transition metal of groups 7 to 10 of the Periodic Table of the Elements, L R L z is from 0 to 4, and the polymerization of the at least one olefin is effected in an aqueous medium which comprises at least 50% by volume of water.