| 摘要 |
<p>A crystalline titanium chloride (probably predominantly TiCl3) cocrystallized with AlCl3 is produced by heating at 80 DEG -200 DEG C. a slurry of one mole TiCl4 and 0,1-0,35 atom Al powder in an aromatic hydrocarbon or chlorinated aromatic hydrocarbon. The product may be isolated, dry ball-milled and then activated with an organometallic compound, e.g. an alkyl Al compound prior to use as a catalyst for polymerizing a C3-20 a -olefin such as propylene. Other specified monomers are butene-1, 3-methylbutene-1, heptene-1, dodecene-1 and styrene. The polymerization reaction may be terminated with a C1-8 alcohol such as isopropyl or n-butyl alcohol, preferably in combination with a chelating agent such as acetylacetone or diacetyl, and the polymer filtered and washed with alcohol or an acid, e.g. hydrochloric acid. Specified organometallic compounds are Et3Al, Pr3Al, i-Bu3Al and Et2AlCl. Specification 857,181 is referred to.ALSO:A crystalline titanium chloride (probably predominantly TiCl3) cocrystallised with AlCl3 is produced by heating at 80-200 DEG C. a slurry of one mole TiCl4 and 0.1-0.35 atom Al powder in an aromatic hydrocarbon or chlorinated aromatic hydrocarbon. The product may be isolated, dry ball-milled and then activated with an organometallic compound e.g. an alkyl Al compound prior to use as a catalyst for polymerizing a C3-C20 a -olefin such as propylene. Specified organometallic compounds are Et3Al, Pr3Al, i-Bu3Al and Et2AlCl. Specification 857,181 is referred to.</p> |
