ORGANOCOBALT COMPLEXES WITH TRIDENTATE SCHIFF'S BASES AS INITIATORS OF EMULSION POLYMERIZATION AND COPOLYMERIZATION OF DIENE AND VINYL MONOMERS Russian patent published in 2005 - IPC

FIELD: organometallic polymerization catalysts.

SUBSTANCE: invention relates to alkylcobalt(III) complexes with tridentate Schiff's bases wherein alkyl ligand contains functional group, notably hydroxyl, carboxyl, or amino group, in accordance with general formula:

(I),

in which W represents two-moiety unsaturated hydrocarbon bridge group expressed by formula =C(H)=C(CH₃)- (propene-1,2-diyl) or o-C₆H₄ (o-phenylene); X is OH, NH₂ or COONa; Y monovalent anion: Cl^-, Br^-, NO₃ ^- or ClO₄ ^-; and Z polymethylene bridge group (CH₂)_n, wherein n=3-11 when X = OH or NH₂ and n=2-11 when X = COONa. The complex are used as initiators of emulsion polymerization and copolymerization of diene and vinyl monomers to produce reactive bifunctional oligomers and polymers with terminal functions, which oligomers and polymers are suitable for further conjugation with corresponding reagents.

EFFECT: extended choice of specific polymerization catalysts.

3 tbl, 30 ex