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公开(公告)号：DE2829623A1
公开(公告)日：1980-01-24
申请号：DE2829623
申请日：1978-07-06
Applicant: BASF AG
Inventor： BACHL ROBERT DIPL CHEM DR , EHLERS EHLER ING GRAD , FRIELINGSDORF HANS DIPL ING DR , SCHWEIER GUENTHER DIPL CHEM DR
Abstract: Ziegler catalyst for the (co)polymerisation of 2-6 C alpha-monoolefins at 30-200 degrees C. and 0.1-200 bar consists of a Ti-contg. component (I) and a metal cpd. (II) of formula MAm-nXn (in which M is Al, Mg, and/or Zn. A is a 1-12C hydrocarbyl gp. X is Cl, Br, I and/or H. m is the valency of M. n is 0 to m-1), the Ti:M atomic ratio being 1:0.1-500. The novelty is that (I) is a solid phase prod. obtd. as follows. A finely-divided porous SiO2.aAl2O3 (III) (a = 0-2) with a particle dia. of 1-1000 mu m, pore vol. of 0.3-3 cm.3/g. and a surface area of 100-1000 m.2/g. is dispersed in a soln. (IV) contg. 100 (wt.) pts. alcohol Z-OH (in which Z is a satd. 1-8C hydrocarbyl gp.). 0.06-1 pts. (as Ti) of TiX'o (in which X' is Cl and/or Br) and 0.01-4 pts. (as Mg) of a Mg cpd. (V) of formula Mg6Alw(OH)xYy(B-OH)z (in which Y is Cl or Br. B is a satd. 1-8C hydrocarbyl gp. w is 0-3, x is 0-8, y = 12+3w-z and z is 0-36), which is soluble in Z-OH, to give a wt. ratio of (III):Ti in TiX'3 of 1:0.001-0.2 and of (III):Mg in (V) of 1:0.01-0.25. The dispersion is evapd. to dryness at 200 degrees C. and above the m.pt. of Z-OH. The solid intermediate obtd. is suspended in an acyl halide opt. dissolved in an organic solvent, to give a wt. ratio of Ti in the intermediate : R-CO-X of 1 : 0.01-100, giving a suspension of (I). Good mol. wt. control is attainable with less mol.wt. regulator than usual and the polymers have much better morphological properties (bulk density and flow). Polymerisation can be carried out (dis)continuously by the suspension, soln., or dry phase process.
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Patent Agency Ranking
公开(公告)号：DE3015702A1
公开(公告)日：1981-10-29
申请号：DE3015702
申请日：1980-04-24
Applicant: BASF AG
Inventor： BACHL ROBERT DIPL CHEM DR , KLAERNER PETER DIPL CHEM DR , SCHWEIER GUENTHER DIPL CHEM DR , EHLERS EHLER ING GRAD
Abstract: A process for the preparation of homopolymers and copolymers of alpha -monoolefins by polymerizing the monomer or monomers with a Ziegler catalyst system comprising (1) a titanium-containing catalyst component and (2) a relevant conventional organo-aluminum compound, (1.1) the catalyst component (1) having been prepared by (1.1.1) milling a titanium compound (I) of the formula TiCl3.z(AlCl3) or ClmTi(OB)4-m, where z is from 0 to 0.5, m is from 0 to 3 and B is alkyl, together with (1.1.2) a magnesium alcoholate (II) and, if desired, (1.1.3) a metal chloride (III) of the formula AlCl3, ZnCl2 or MnCl2, to form a milled product (IV), in which polymerization process a catalyst component (1) is employed, in the preparation of which (1.2) the milled product (IV) obtained according to (1.1) is brought together, in an additional step (1.2.1), with (1.2.2) an alkanol (V) and (1.2.3) a liquid alkane (VI), to form a suspension (VII), and thereafter (1.3), in a further additional step (1.3.1), there is added, to the suspension (VII) obtained according to (1.2), (1.3.2) a metal compound (VIII) of a certain type, the metal being aluminum, silicon or titanium, while preserving the suspension state, the product (IX), which results from stage (1.3) and is present as a solid phase in the suspension, constituting the titanium-containing catalyst component (1).
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