Patent ID: 7022786

Claim:
A process for the emulsion polymerization or emulsion copolymerization of ethylene or other 1-olefins and, optionally, other non-1-olefins in the presence of a complex of formula I: where the variables are defined as follows: M is an element of Groups 6 to 10 of the Periodic Table of the Elements, Nu 1 is selected from the group consisting of O, S and Se; Nu 2 , Nu 3 are selected from the group consisting of N and P, A 1 is N or C—R 7 or Si—R 7 , A 2 is N or C—R 8 or Si—R 8 , R 1 to R 9 are selected from the group consisting of (i) hydrogen, (ii) substituted or unsubstituted C 1 –C 8 -alkyl, (iii) substituted or unsubstituted C 2 –C 8 -alkenyl having from one to 4 isolated or conjugated double bonds, (iv) substituted or unsubstituted C 3 –C 12 -cycloalkyl, (v) C 7 –C 13 -aralkyl, (vi) C 6 –C 14 -aryl that is unsubstituted or monosubstituted or polysubstituted by identical or different substituents selected from the group consisting of substituted or unsubstituted C 1 –C 8 -alkyl, C 3 –C 12 -cycloalkyl, C 7 –C 13 -aralkyl, C 6 –C 14 -aryl, halogen, substituted or unsubstituted C 1 –C 6 -alkoxy, C 6 –C 14 -aryloxy, SiR 10 R 11 R 12 and O—SiR 10 R 11 R 12 ; and (vii) five- and six-membered nitrogen-containing heteroaryl radicals, unsubstituted or monosubstituted or polysubstituted by identical or different substituents selected from the group consisting of substituted or unsubstituted C 1 –C 8 -alkyl, C 3 –C 12 -cycloalkyl, C 7 –C 13 -aralkyl, C 6 –C 14 -aryl, halogen, C 1 –C 6 -alkoxy, C 6 –C 14 -aryloxy, SiR 10 R 11 R 12 and O—SiR 10 R 11 R 2 , where adjacent radicals R 1 to R 9 are optionally joined to one another to form a 5- to 12-membered ring; L 1 is an uncharged organic or inorganic ligand, L 2 is an organic or inorganic anionic ligand, where L 1 and L 2 may be joined to one another by one or more covalent bonds, and z is an integer from 1 to 3, and where R 10 to R 12 are identical or different and are selected from among the group consisting of hydrogen, C 1 –C 8 -alkyl, C 3 –C 12 -cycloalkyl, C 7 –C 13 -aralkyl and C 6 –C 14 -aryl.