FREMGANGSMAATE VED POLYMERISERING ELLER KOPOLYMERISERING AV ETYLEN ELLER PROPYLEN ELLER KOPOLYMERISERING AV ETYLEN MED ET ALFA-OLEFIN OG/ELLER DIOLEFIN, SAMT KATALYSATORSYSTEM FOR UTFOERELSE AV FREMGANGSMAATEN

摘要

1452314 Magnesium dihalide supported polymerization catalysts MITSUI PETROCHEMICAL INDUSTRIES Ltd 6 Nov 1973 [10 Nov 1972 27 Dec 1972] 51523/73 Heading C3P Olefins are polymerized in the presence of a catalyst comprising (a) an organometalllic compound of a metal of Groups I to III and (b) the reaction product of (i) a magnesium dihalide adduct with an electron donor; (ii) a titanium or vanadium compound and (iii) a tetravalent silicon or tin compound containing at least one Si- or Sn-halogen bond. In examples ethylene, propylene, ethylene-propylene and ethylenebutadiene are polymerized in the presence of, typically, (a) Et 3 Al, Et 2 AlH, EtAlCl 2 and (n-C 6 H 13 ) 3 Al, and (b) (i) MgCl 2 .n-C 8 H 17 OH, EtOH, .5CH 3 COOC 4 H 9 , .H 2 O and .C 3 H 7 COOH, and MgBr 2 .EtOH, (ii) TiCl 4 , VCl 4 , and Ti(OEt). Cl 3 , and (iii) SiCl 4 , SiBr 4 , SnCl 4 , MeSnCl 3 and SiHCl 3 .