Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2001-06-19
2003-04-15
Wu, David W. (Department: 1713)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S011000, C556S012000, C556S052000
Reexamination Certificate
active
06548686
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a transition metal compound having a multidentate mono-anionic ligand containing a hetero atom as a substituent, a catalyst for addition polymerization obtained by using said transition metal compound, and a process for producing an addition polymer with the catalyst.
2. Description of Related Arts
Regarding a method for producing an addition polymer with a single site catalyst composed of a metallocene complex or the like, many reports have done. For example, JP-A-58-19309 discloses a method for producing an olefin polymer with a metallocene complex and an aluminoxane. There has been a problem that when addition polymerization of an olefin or the like is conducted in such a system, the amount of the initial heat generation is large particularly due to high initial activity and consequently control of the polymerization reaction is difficult.
SUMMARY OF THE INVENTION
Under the above-situation, an object of the present invention is to provide a transition metal compound useful for preparing a catalyst for addition polymerization having a catalytic activity which suppresses heat generation at the beginning of polymerization and can be industrially carried out, and such a catalyst for addition polymerization, and an efficient process for producing an addition polymer, which can suppress heat generation at the beginning of polymerization and can be industrially carried out.
Namely, the present invention relates to a transition metal compound (A) of the following general formula (1):
(wherein, M represents a titanium atom, zirconium atom or hafnium atom in the +3 formal oxide condition; A represents a multidentate mono-anionic ligand; R
1
represents an alkyl group, aralkyl group, aryl group or substituted silyl group; E represents an oxygen atom or sulfur atom; each of two Xs independently represents a hydrogen atom, halogen atom, alkyl group, aralkyl group, aryl group, substituted silyl group, alkoxy group, aralkyloxy group, aryloxy group or di-substituted amino group, and two Xs may bond mutually to form a ring; D represents a neutral ligand coordinated on M; and n represents an integer of from 0 to 2.).
Further, the present invention relates to a catalyst for addition polymerization obtained by bringing the transition metal compound (A) into contact with the following (B) and/or (C):
(B) one or more aluminum compounds selected from the following (B1) to (B3);
(B1) organic aluminum compounds of the general formula E
1
a
AlZ
3−a
,
(B2) cyclic aluminoxanes having a structure of the general formula {—Al(E
2
)—O—}
b
, and
(B3) linear aluminoxanes having a structure of the general formula E
3
{—Al(E
3
)—O—}
c
AlE
3
2
(wherein, each of E
1
, E
2
and E
3
represents a hydrocarbon group, and all E
1
s, all E
2
s or all E
3
s may be the same or different. Z represents a hydrogen atom or halogen atom, and all Zs may be the same or different a represents a number satisfying 0 <a≦3, b represents an integer of 2 or more, and c represents an integer of 1 or more.),
(C) one or more boron compounds selected from the following (C1) to (C3):
(C1) boron compounds of the general formula BQ
1
Q
2
Q
3
,
(C2) boron compounds of the general formula G
+
(BQ
1
Q
2
Q
3
Q
4
)
−
, and
(C3) boron compounds of the general formula (L—H)
+
(BQ
1
Q
2
Q
3
Q
4
)
−
(wherein, B represents a trivalent boron atom, and Q
1
to Q
4
represent a halogen atom, hydrocarbon group, halogenated hydrocarbon group, substituted silyl group, alkoxy group or di-substituted amino group, and they may be the same or different. G
+
represents an inorganic or organic cation, and L represents a neutral Lewis base and (L—H)
+
represents a Br&phgr;nsted acid.).
REFERENCES:
patent: 4542199 (1985-09-01), Kaminsky et al.
patent: 5532394 (1996-07-01), Rosen et al.
patent: 5986029 (1999-11-01), van Beek et al.
patent: 6329478 (2001-12-01), Katayama et al.
patent: 2002/0013433 (2002-01-01), Nabika et al.
patent: 416 815 (1991-03-01), None
patent: 0 887 355 (1998-12-01), None
patent: 0 963 990 (1999-12-01), None
patent: 9-77818 (1997-03-01), None
patent: WO 92/12112 (1992-07-01), None
patent: WO 92/12117 (1992-07-01), None
patent: WO 96/13529 (1996-05-01), None
Huang, Q.; Qian, Y.; Li, G. Transition Met. Chem. 1990, 15, 483.*
Chen, Y.-X.; Fu, P-F.; Stern, C. L. Marks, T. J. Organometallics 1997, 16, 5958.*
Rau, A.; Schmitz, S.; Luft, G. J. Organomet. Chem. 2000, 608, 71 (abstract).*
Tian et al., J. Organomet. Chem., vol. 558, pp. 231-233, (1998).
Rau et al., J. Organomet. Chem., vol. 608, pp. 71-75, (2000).
Miyatake Tatsuya
Nabika Masaaki
Lee Rip A.
Sumitomo Chemical Company Limited
Wu David W.
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