| US 7,390,862 B2 | ||
| Process for polymerizing 1-butene | ||
| Luigi Resconi, Ferrara (Italy) | ||
| Assigned to Basell Polyolefine GmbH, Wesseling (Germany) | ||
| Appl. No. 10/556,373 PCT Filed May 07, 2004, PCT No. PCT/EP2004/005078 § 371(c)(1), (2), (4) Date Nov. 10, 2005, PCT Pub. No. WO2004/099269, PCT Pub. Date Nov. 18, 2004. |
||
| Claims priority of provisional application 60/478099, filed on Jun. 12, 2003. | ||
| Claims priority of application No. 03101304 (EP), filed on May 12, 2003. | ||
| Prior Publication US 2006/0235173 A1, Oct. 19, 2006 | ||
| Int. Cl. C08F 4/6392 (2006.01); C08F 4/64 (2006.01); C08F 210/08 (2006.01); C08F 110/08 (2006.01) | ||
| U.S. Cl. 526—161 [526/165; 526/348.6; 526/943; 502/103; 502/152; 502/168] | 14 Claims |
| 1. A process for preparing 1-butene polymers, said process comprising polymerizing 1-butene or copolymerizing 1butene with
ethylene, propylene or an alpha-olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting:
(A) a metallocene compound having the following formula (I)
 M is an atom of a transition metal selected from those belonging to group 3, 4, or to the lanthanide or actinide groups in
the Periodic Table of the Elements;
X, are equal to or different from each other, and are hydrogen, a halogen, R, OR, OSO2CF3, OCOR, SR, NR2 or PR2 group, wherein R is a linear or branched, saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; and
R′ is a C1-C20alkylidene, C6-C20-arylidene, C7-C20-alkylarylidene, or C7-C20-arylalkylidene radical;
R1, R2, R5, R6, R7, R8 and R9, are equal to or different from each other, and are hydrogen, or a linear or branched, saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; wherein
R5 and R6 can optionally form a saturated or unsaturated, optionally substituted 5 or 6 membered ring, the ring can be optionally substituted
with at least one C1-C20 alkyl radical; R8 and R9 can optionally form a saturated or unsaturated, optionally substituted 5 or 6 membered ring, the ring can be optionally substituted
with at least one C1-C20 alkyl radical;
with the proviso that at least one of R6 or R7 is a linear or branched, saturated or unsaturated C1-C20-alkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements;
R3 and R4, are equal to or different from each other, and are linear or branched, saturated or unsaturated C1-C20-alkyl, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; and
(B) an alumoxane or a compound capable of forming an alkyl metallocene cation, wherein the process prepares at least one 1-butene polymer, the 1-butene polymer comprising an intrinsic viscosity greater
than 1.9 dL/g measured in tetrahydronaphtalene at 135° C.
|