Transition metal compound, addition polymerization catalyst...

Details Transition metal compound, addition polymerization catalyst... Transition metal compound, addition polymerization catalyst...

2000-09-29

2003-03-04

Nazario-Gonzalez, Porfirio (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C502S103000, C502S117000, C502S152000, C502S155000, C526S127000, C526S160000, C526S161000, C526S352000, C526S943000

Reexamination Certificate

active

06528671

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a transition metal compound suitable as an addition polymerization catalyst component, an addition polymerization catalyst, and a process for producing an olefin polymer.
2. Description of the Relates Arts
A lot of reports have been made previously regarding a process for producing an olefin polymer using a transition metal compound such as a metallocene complex or the like. For example, a process for producing an olefin polymer using a metallocene complex and aluminoxane, has been reported in JP-A-58-19309. Further, regarding an olefin polymerization using a transition metal compound in which a diene compound is a ligand, a bridging type monocyclopentadienyl complex in which titanium has a formal oxidation number of II is disclosed in WO95/00526, and a bridging type monocyclopentadienyl complex as described above having a metallacycle structure in which titanium has a formal oxidation number of IV, is disclosed in WO96/00734. On the other hand, regarding a non-bridged type monocyclopentadienyl complex, JP-A-10-502396 discloses that a monocyclopentadienyl titanium (diphenylbutadiene) complex is useful in stereoregular polymerization of styrene by combining with various co-catalysts, and, regarding a polymerization using a monocyclopentadienyl titanium complex in which a phosphineimine is a ligand, JP-A-10-338706 discloses that a polymer of high molecular weight can be produced by conducting solution polymerization of an olefin at a temperature of 80° C. or more. However, these processes were not admitted as satisfactory from the standpoint of polymerization activity.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a transition metal compound useful as an addition polymerization catalyst component which can exhibit high activity, an addition polymerization catalyst component composed of the above-mentioned transition metal compound, a highly active addition polymerization catalyst prepared by using the above-mentioned transition metal compound, and a process for efficiently producing an olefin polymer using the above-mentioned addition polymerization catalyst.
Namely, the present invention relates to a transition metal compound obtained by reacting a transition metal compound(a) represented by the following general formula (1) with (b) a conjugated diene or non-conjugated diene in the presence of (c) a compound selected from the group consisting of an alkyllithium, alkali metal, hydrogenated substance of an alkali metal, and Grignard compound, and to a transition metal compound represented by the following general formula (2). Further, the present invention relates to an addition polymerization catalyst composed of the above-mentioned transition metal compound, an addition polymerization catalyst obtained by contacting the above-mentioned transition metal compound with a co-catalyst for activation, and a method for producing an olefin polymer using the above-mentioned addition polymerization catalyst.
(wherein, in the general formula (1) or (2), M represents a titanium atom, zirconium atom or hafnium atom; L represents a group having an aromatic &pgr; electron and is connected to M via the &pgr; electron; D represents a conjugated diene or non-conjugated diene; R represents a hydrogen atom, alkyl group, aralkyl group, aryl group or substituted silyl group, and all R's may be the same or different; d is 1 or 2; p is 1 or 2, m is 0 or 1; and the sum of p and m is 2.).
The present invention will be illustrated further in detail below.
DETAILED DESCRIPTION OF THE INVENTION
(A) Transition Metal Compound
The transition metal compound (A) of the present invention is a transition metal compound obtained by reacting a transition metal compound (a) represented by the following general formula (1) with a conjugated diene or non-conjugated diene (b) in the presence of a compound (c) selected from the group consisting of alkyllithiums, alkali metals, hydrogenated substances of an alkali metal and Grignard compounds.
M in the transition metal compound represented by the above-mentioned general formula (1) represents a titanium atom, zirconium atom or hafnium atom, and particularly preferably a titanium atom.
Examples of the group represented by L having an aromatic &pgr; electron and is connected to M via the &pgr; electron include an &eegr;
5
-cyclopentadienyl group, &eegr;
5
-methylcyclopentadienyl group, &eegr;
5
-dimethylcyclopentadienyl group, &eegr;
5
- trimethylcyclopentadienyl group, &eegr;
5
-tetramethylcyclopentadienyl group, &eegr;
5
-ethylcyclopentadienyl group, &eegr;
5
-n-propylcyclopentadienyl group, &eegr;
5
-isopropylcyclopentadienyl group, &eegr;
5
-n-butylcyclopentadienyl group, &eegr;
5
-sec-butylcyclopentadienyl group, &eegr;
5
-tert-butylcyclopentadienyl group, &eegr;
5
-n-pentylcyclopentadienyl group, &eegr;
5
-neopentylcyclopentadienyl group, &eegr;
5
-n-hexylcyclopentadienyl group, &eegr;
5
-n-octylcyclopentadienyl group. &eegr;
5
-phenylcyclopentadienyl group, &eegr;
5
-naphthylcyclopentadienyl group, &eegr;
5
-trimethylsilylcyclopentadienyl group, &eegr;
5
-triethylsilylcyclopentadienyl group, &eegr;
5
-tert-butyldimethylsilylcyclopentadienyl group, &eegr;
5
-indenyl group, &eegr;
5
-methylindenyl group, &eegr;
5
-dimethylindenyl group, &eegr;
5
-ethylindenyl group, &eegr;
5
-n-propylindenyl group, &eegr;
5
-isopropylindenyl group, &eegr;
5
-n-butylindenyl group, &eegr;
5
-sec-butylindenyl group, &eegr;
5
-tert-butylindenyl group, &eegr;
5
-n-pentylindenyl group, &eegr;
5
-neopentylindenyl group, &eegr;
5
-n-hexylindenyl group, &eegr;
5
-n-octylindenyl group, &eegr;
5
-n-decylindenyl group, &eegr;
5
-phenylindenyl group, &eegr;
5
-methylphenylindenyl group, &eegr;
5
-naphthylindenyl group, &eegr;
5
-trimethylsilylindenyl group, &eegr;
5
-triethylsilylindenyl group, &eegr;
5
-tert-butyldimethylsilylindenyl group, &eegr;
5
-tetrahydroindenyl group, &eegr;
5
-fluorenyl group, &eegr;
5
-methylfluorenyl group, &eegr;
5
-dimethylfluorenyl group, &eegr;
5
-ethylfluorenyl group, &eegr;
5
-diethylfluorenyl group, &eegr;
5
-n-propylfluorenyl group, &eegr;
5
-di-n-propylfluorenyl group, &eegr;
5
-isopropylfluorenyl group, &eegr;
5
-diisopropylfluorenyl group, &eegr;
5
-n-butylfluorenyl group, &eegr;
5
-sec-butylfluorenyl group, &eegr;
5
-tert-butylfluorenyl group, &eegr;
5
-di-n-butylfluorenyl group, &eegr;
5
-di-sec-butylfluorenyl group, &eegr;
5
-di-tert-butylfluorenyl group, &eegr;
5
-n-pentylfluorenyl group, &eegr;
5
-neopentylfluorenyl group, &eegr;
5
-n-hexylfluorenyl group, &eegr;
5
-n-octylfluorenyl group, &eegr;
5
-n-decylfluorenyl group, &eegr;
5
-n-dodecylfluorenyl group, &eegr;
5
-phenylf luorenyl group, &eegr;
5
-di-phenylfluorenyl group, &eegr;
5
-methylphenylfluorenyl group, &eegr;
5
-naphthylfluorenyl group, &eegr;
5
-trimethylsilylfluorenyl group, &eegr;
5
-bis-trimethylsilylfluorenyl group, &eegr;
5
-triethylsilylfluorenyl group, &eegr;
5
-tert-butyldimethylsilylfluorenyl group and the like, and preferable examples thereof include an &eegr;
5
-cyclopentadienyl group, &eegr;
5
-methylcyclopentadienyl group, &eegr;
5
-tert-butylcyclopentadienyl group, &eegr;
5
-tetramethylcyclopentadienyl group, &eegr;
5
-indenyl group or &eegr;
5
-fluorenyl group.
R in the general formula (1) represents a hydrogen atom, alkyl group, aralkyl group, aryl group or substituted silyl group, and all R's may be the same or different.
The alkyl group in the substituent R is preferably an alkyl group having 1 to 20 carbon atoms, and more preferably an alkyl group having 4 to 10 carbon atoms, and examples thereof include a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, neopentyl group, tert-pentyl group, cyclopentyl group, n-hexyl group, cyclohexyl group, n-octyl group, n-decyl group, n-dodecyl group, n-pentadecyl group, n-eicosyl group and the like, and more preferably a n-butyl group, tert-butyl group, neopentyl group, cyclopentyl group, tert-pentyl group and cyclohexyl group.
Any

Affiliated with

Also associated with

Rating

Transition metal compound, addition polymerization catalyst... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transition metal compound, addition polymerization catalyst..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transition metal compound, addition polymerization catalyst... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3030527