Claims
- 1. A catalyst for polymerizing an olefin, which comprises:
- (A) a metallocene transition metal compound,
- (B) at least one member selected from the group consisting of (1) an ion-exchanging layered compound other than a silicate and (2) an inorganic silicate prepared by treating a starting ion-exchanging layered compound other than a silicate or a starting silicate with a salt, an acid or combination thereof, said component (B) having a water content not higher than 1% by wt which is obtained by heat-dehydrating component (B) under an inert gas atmosphere or under reduced pressure, and
- (C) an organoaluminum compound.
- 2. The catalyst according to claim 1 wherein said treatment is a salt treatment.
- 3. The catalyst recording to claim 1, wherein said treatment is a combination of a salt treatment and an acid treatment.
- 4. The catalyst according to claim 3, wherein component (B), prior to acid or salt treatment contains at least 0.1% by wt of an exchangeable metal cation of Group 1 of the Periodic Table.
- 5. The catalyst according to claim 4, wherein the amount of said exchangeable metal cation is at least 0.5% by wt.
- 6. The catalyst according to claim 4, wherein the component (B) before being subjected to the salt and acid treatments has at least 40% by weight of the exchangeable Group 1 metal cation ion-exchanged with a cation of at least one atom selected from the group consisting of Groups 2-14 atoms of the Periodic Table.
- 7. The catalyst according to claim 6, wherein at least 60% by wt of the exchangeable Group 1 metal cation is ion-exchanged.
- 8. The catalyst according to claim 1, wherein the salt of the salt-treatment is a water-soluble compound or an acidic aqueous solution-soluble compound, whose cation component is a cation of at least one atom selected from the group consisting of atoms of Groups 2-14 of the Periodic Table and whose anion component is a halide or the conjugate base of an inorganic acid or an organic acid or a combination thereof.
- 9. The catalyst according to claim 8, wherein the halide or conjugate base is selected from the group consisting of Cl.sup.-, Br.sup.-, I.sup.-, F.sup.-, PO.sub.4.sup.3-, SO.sub.4.sup.2-, NO.sub.3.sup.-, CO.sub.3.sup.2-, C.sub.2 O.sub.4.sup.2-, ClO.sub.4.sup.-, OOCCH.sub.3.sup.-, CH.sub.3 COCHCOCH.sub.3.sup.-, OCl.sub.2.sup.-, O(NO.sub.3).sub.2.sup.-, O(ClO.sub.4).sub.2.sup.2-, O(SO.sub.4).sup.2-, OH.sup.-, O.sub.2 Cl.sub.2.sup.2-, OCl.sub.3.sup.-, OOCH.sup.-, OOCCH.sub.2 CH.sub.3.sup.-, and C.sub.6 H.sub.5 O.sub.7.sup.-3.
- 10. The catalyst according to claim 1, wherein the acid of said acid treatment is an inorganic acid.
- 11. The catalyst according to claim 1, wherein the component (A) is an organometallic compound comprising a cyclopentadienyl ring-containing ligand and a metal of Group 3, 4, 5 or 6 of the Periodic Table.
- 12. The catalyst according to claim 1, wherein the component (A) is a compound of the formula (1) or (2):
- (C.sub.5 R.sup.1.sub.a H.sub.5-a).sub.p (C.sub.5 R.sub.b.sup.2 H.sub.5-b).sub.q MR.sub.r.sup.3 ( 1)
- �(C.sub.5 R.sup.1.sub.a H.sub.5-a).sub.p (C.sub.5 R.sub.b.sup.2 H.sub.5-b).sub.q Mr.sub.r.sup.3 L.sub.m !.sup.n+ �R.sup.4 !.sub.s.sup.t-( 2)
- wherein C.sub.5 R.sub.a.sup.1 H.sub.5-a and C.sub.5 R.sub.b.sup.2 H.sub.5-b are cyclopentadienyl group derivatives, wherein each of R.sup.1 and R.sup.2, which may be the same or different, is a C.sub.1-20 hydrocarbon group, optionally substituted by halogen; a silicon-containing group; a phosphorus-containing group; a nitrogen-containing group or an oxygen-containing group; a and b are each 0 or an integer of 1-5 and (s.times.t=n), wherein s=1, 2 or 3;
- R.sup.3 is a C.sub.1-20 hydrocarbon group, optionally substituted by halogen, hydrogen; a silicon-containing group; an alkoxy group; an aryloxy group; an amide group or a thiolate group;
- M is an atom of Group 3, 4, 5 or 6 of the Periodic Table;
- L is an electrically neutral Lewis base ligand and m is 0 or an integer greater than 0 which indicates the number of the Lewis base ligands;
- �R.sup.4 !.sup.t- is at least one anion; and
- p, q and r are 0 or positive integers which satisfy the equation, p+q+r=V (V=the valence of M), in the event that component (A) is a metallocene transition metal compound of the formula (1), or p, q and r are 0 or positive integers which satisfy the equation, p+q+r=V-n, in the event that component (A) is a metallocene transition metal compound of the formula (2).
- 13. The catalyst according to claim 12, wherein M in the formula (1) or (2) is titanium, zirconium or hafnium.
- 14. The catalyst according to claim 1, wherein the component (C) is a compound of the formula,
- AlR.sup.6.sub.j X.sub.3-j
- wherein R.sup.6 is a C.sub.1-20 hydrocarbon group, X is hydrogen, halogen or an alkoxy group, and j is an integer which satisfies 0<j.ltoreq.3.
- 15. The catalyst according to claim 1, wherein the component (A) is a compound of the formula (1) or (2):
- (C.sub.5 R.sup.1.sub.a H.sub.5-a).sub.p (C.sub.5 R.sub.b.sup.2 H.sub.5-b).sub.q MR.sub.r.sup.3 ( 1)
- �(C.sub.5 R.sup.1.sub.a H.sub.5-a).sub.p (C.sub.5 R.sub.b.sup.2 H.sub.5-b).sub.q MR.sub.r.sup.3 L.sub.m !.sup.n+ �R.sup.4 !.sub.s.sup.t-( 2)
- wherein C.sub.5 R.sub.a.sup.1 H.sub.5-a and C.sub.5 R.sub.b.sup.2 H.sub.5-b are cyclopentadienyl group derivatives, wherein each of R.sup.1 and R.sup.2, which may be the same or different, is a C.sub.1-20 hydrocarbon group, optionally substituted by halogen; a silicon-containing group; a phosphorus-containing group; a nitrogen-containing group or an oxygen-containing group, a and b are each 0 or an integer of 1-5 and (s.times.t=n), wherein s=1, 2 or 3;
- R.sup.3 is a C.sub.1-20 hydrocarbon group, optionally substituted by halogen; hydrogen; halogen, a silicon-containing group, an alkoxy group, an aryloxy group, an amide group or a thiolate group;
- M is an atom of Group 3, 4, 5 or 6 of the Periodic Table;
- L is an electrically neutral Lewis base ligand and m is 0 or an integer greater than 0 which indicates the number of the Lewis base ligands;
- �R.sup.4 !.sup.t- is at least one anion; and
- p, q and r are 0 or positive integers which satisfy the equation, p+q+r=V (V=the valence of M), in the event that component (A) is a metallocene transition metal compound of the formula (1), or p, q and r are 0 or positive integers which satisfy the equation, p+q+r=V-n, in the event that component (A) is a metallocene transition metal compound of the formula (2), and
- the component (C) is a compound of the formula,
- AlR.sub.j.sup.6 X.sub.3-j
- wherein R.sup.6 is a C.sub.1-20 hydrocarbon group, X is hydrogen, halogen or an alkoxy group, and j is an integer which satisfies 0<j.ltoreq.3.
Priority Claims (2)
| Number |
Date |
Country |
Kind |
| 6-103815 |
May 1994 |
JPX |
|
| 6-214751 |
Sep 1994 |
JPX |
|
Parent Case Info
This application is a Continuation of application Ser. No. 08/443,160, filed on May 17, 1995, now abandoned.
US Referenced Citations (5)
Continuations (1)
|
Number |
Date |
Country |
| Parent |
443160 |
May 1995 |
|
Patent Grant
5928982
