ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Radical Reactions Initiated by Chelate Complexes of Transition Metals. IV. System Bidentate Ligand—Salt of the Transition Metal— Halogen-Containing Compound as Initiator of Vinyl Chloride Polymerization

J. Bartoň, Z. Maňásek, and M. Lazár

Institute of Polymers, Slovak Academy of Sciences, Bratislava 9

Abstract:  The vinyl chloride polymerization initiated by the system of bidentate organic ligand with donor atoms oxygen —nitrogen, nitrogen—nitrogen and oxygen —oxygen in the presence of the salt of the transition metal and halogen- containing compound has been studied. Out of the series of bidentate ligands investigated the derivatives of aminoalcohols are found to be most effective for the vinyl chloride polymerization. The influence of individual metal salts on the rate of vinyl chloride polymerization in the initiation system l-amino-2-propanol —carbon tetrachloride decreases in the order Cu(II) >> Mn(II), Fe(III), Pb(II), Ni(II), Cr(III), Co(II), Zn(II) > Fe(II). Out of the halogen-containing compounds the halogen alkane derivatives polysubstituted on a single carbon, particularly carbon tetrachloride and hexachloroethane are of a most effective influence on the vinyl chloride polymerization in the system l-amino-2-propanol —salt of a transition metal. For the dependence of polymerization rate R_p on the concentration of l-amino-2-propanol and copper(II) acetate the equation R_p = k [aminoalcohol]^1.85 [Cu acetate]^0.51 was obtained.

Full paper in Portable Document Format: 254a292.pdf

Chemical Papers 25 (4) 292–299 (1971)