POLYMERIZATION PROCESS

摘要

1455764α-Olefin/multiolefin reaction mixture copolymerization GOODYEAR TIRE & RUBBER CO 3 July 1974 [27 July 1973] 29487/74 Heading C3P [Also in Division C5] Alphaolefin copolymers are obtained by (a) forming an acyclic multiolefin reaction mixture by bringing an alphaolefin into contact with a cyclomonoolefin or a nonconjugated cyclomultiolefin in the presence of an olefin cross-metathasis catalyst and, without catalyst removal, (b) copolymerizing the resulting mixture with further alpha-olefin in the presence of a coordination catalyst comprising a Group IVb or Vb transition metal compound and an organometallic compound. The multiolefins in the reaction mixture from hexene-1 and cyclooctene are typically of the formulae and where n is typically 1, 2 or 3. Suitable catalysts for the initial reaction (a) are mixtures of organometallic compounds, tungsten or molybdenum compounds and, usually, oxygen or an oxygen or sulphurcontaining compound. The examples refer to (a) the production of multiolefin reaction products by reacting hexene-1, pentene-1 or propylene with cyclooctene, cyclopentene, 1,5-cyclooctadiene or 1-methyl-1,5-octadiene in the presence of WCl 6 or WF 6 /EtAlCl 2 or Bu 4 Sn/ EtOH or Et 2 O followed by (b) addition of pentene-1, hexene-1 or an ethylene/propylene mixture in major amounts to the reaction products and copolymerization therewith in the presence of Et 3 Al/Et 3 Al-TiCl 4 -VCl 4 reaction product, Et 2 AlCl/alpha TiCl 3 or Et 3 Al 2 Cl 3 / VOCl 3 . The copolymers may be sulphur cured.