C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/643
C08F 4/64 (2006.01) C08F 10/06 (2006.01)
Patent
CA 1290092
Abstract of the Disclosure: Polymers of propene are pre- pared using a Ziegler-Natta catalyst system consisting of (1) a titanium component which is based on a finely divi- ded, shape-imparting silica gel and contains titanium, magnesium, chlorine and a benzenecarboxylic acid deriva- tive, (2) an aluminum component and (3) a silane compon- ent. In the process, a titanium component (1) is employed which is obtained by (1.1) first preparing (I) a carrier from (Ia) a silica gel which has a relatively high moisture content, (Ib) an organomagnesium compound and (Ic) a gaseous chlorinating agent by a method in which (1.1.1) first (Ia) is reacted with (Ib), (1.1.2) then (Ic) is passed into the mixture obtained in (1.1.1), and (I) is isolated, (1.2) thereafter a solid-phase intermediate is prepared from (I), (II) an alkanol, (III) titanium tetrachloride and (IV) a phthalic acid deriva- tive by a procedure in which (1.2.1) first (I) is reacted with (II), (1.2.2) then (III) is introduced into the mix- ture resulting from (1.2.1), with the proviso that (IV) is also introduced during (1.2.1) and/or (1.2.2), (1.3) then the solid-phase product resulting from (1.2) is extracted with titanium tetrachloride or a titanium tetrachloride/hydrocarbon mixture, and (1.4) finally the solid-phase product resulting from (1.3) is washed with a liquid hydrocarbon.
575164
Hemmerich Rainer
Kerth Juergen
Zolk Ralf
Novolen Technology Holdings C.v.
Robic
LandOfFree
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