Global Patent Index - EP 0885231 A4

EP 0885231 A4 2000-02-09 - SYNTHESIS OF TITANOCENES

Title (en)

SYNTHESIS OF TITANOCENES

Title (de)

TITANOCENSYNTHESE

Title (fr)

SYNTHESE DE TITANOCENES

Publication

EP 0885231 A4 (EN)

Application

EP 96942783 A

Priority

  • CA 2243661 A
  • US 9618666 W

Abstract (en)

[origin: WO9822476A1] A method for the preparation of titanium-containing metallocene compounds, including constrained geometry titanium complexes, useful as olefin polymerization catalysts is disclosed. Pursuant to the invention, titanium tetrachloride is converted to titanium trichloride by reaction with a metal compound in a non-interfering solvent to produce a mixture useful directly for reaction with a deprotonated metallocene ligand. The titanocene compounds produced pursuant to the invention are free of trace amounts of aluminum which can adversely affect the polymerization reaction.

IPC 1-7 (main, further and additional classification)

C07F 17/00; B01J 31/00; C07F 7/00; C07F 7/28; C08F 4/642; C08F 4/643

IPC 8 full level (invention and additional information)

B01J 31/22 (2006.01); C07F 17/00 (2006.01); C08F 4/642 (2006.01); C08F 4/643 (2006.01)

CPC (invention and additional information)

B01J 31/1608 (2013.01); B01J 31/181 (2013.01); B01J 31/2295 (2013.01); C07F 17/00 (2013.01); B01J 31/122 (2013.01); B01J 31/38 (2013.01); B01J 2531/46 (2013.01)

Citation (search report)

  • [Y] EP 0639579 A2 19950222 - ALBEMARLE CORP [US]
  • [XY] MACH, KAREL ET AL: "Effects of methyl substituents at the cyclopentadienyl ligand on the properties of C5H5TiCl3 and C5H5TiAl2Cl8-x(C2H5)x (x = 0-4) complexes", J. ORGANOMET. CHEM. ( 1987 ), 333(2), 205-15, XP002121361
  • See also references of WO 9822476A1

Designated contracting state (EPC)

BE CH DE DK FR GB IT LI NL

EPO simple patent family

WO 9822476 A1 19980528; CA 2243661 A1 19980528; EP 0885231 A1 19981223; EP 0885231 A4 20000209

INPADOC legal status


2002-06-26 [18R] REFUSED

- Effective date: 20020207

2001-04-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010312

2000-02-09 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 19991229

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): BE CH DE DK FR GB IT LI NL

2000-02-09 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 07F 17/00 A, 7C 07F 7/00 B, 7C 07F 7/28 B, 7C 08F 4/642 B, 7C 08F 4/643 B, 7B 01J 31/00 B

1998-12-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980805

1998-12-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE CH DE DK FR GB IT LI NL