Propylene homopolymer and propylene copolymer prepared using novel bridged indenyl-containing metallocene

• US 5,705,584 A
• Filed: 06/07/1995
• Issued: 01/06/1998
• Est. Priority Date: 06/07/1993
• Status: Expired due to Term

• Current Assignee: Mitsui Chemicals Incorporated (Mitsui Chemicals)
• Original Assignee: Mitsui Petrochemical Industries, Ltd.
• Inventors: Kawasaki, Masaaki, Ueda, Takashi, Mizuno, Akira, Fukuoka, Daisuke, Hashimoto, Mikio, Itoh, Masaaki, Tashiro, Takashi, Kiso, Yoshihisa, Kawaai, Koji
• Primary Examiner(s): WU, DAVID WEI HSIUNG
• Application Number:
  US08/477,647
• Time in Patent Office: 944 Days
• Field of Search: 526/351, 526/348.2, 526/348.6, 526/160, 526/943
• US Class Current: 526/348.2
• CPC Class Codes: C07C 45/46 Friedel-Crafts reactions
• CPC Class Codes: C07C 49/67 having two rings, e.g. tetralones
• CPC Class Codes: C07C 49/697 containing six-membered aromatic rings
• CPC Class Codes: C07F 17/00 Metallocenes
• CPC Class Codes: C08F 10/00 Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
• CPC Class Codes: C08F 10/06 Propene
• CPC Class Codes: C08F 110/06 Propene
• CPC Class Codes: C08F 210/06 Propene
• CPC Class Codes: C08F 210/08 Butenes
• CPC Class Codes: C08F 210/14 Monomers containing five or more carbon atoms
• CPC Class Codes: C08F 210/16 Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• CPC Class Codes: C08F 2500/03 Narrow molecular weight distribution, i.e. Mw/Mn < 3
• CPC Class Codes: C08F 2500/15 Isotactic
• CPC Class Codes: C08F 2500/17 Viscosity
• CPC Class Codes: C08F 2500/26 Use as polymer for film forming
• CPC Class Codes: C08F 4/61912 in combination with an organoaluminium compound
• CPC Class Codes: C08F 4/61927 two cyclopentadienyl rings being mutually bridged
• CPC Class Codes: C08F 4/63927 two cyclopentadienyl rings being mutually bridged
• CPC Class Codes: C08F 4/65908 in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
• CPC Class Codes: C08F 4/65912 in combination with an organoaluminium compound
• CPC Class Codes: C08F 4/65916 : supported on a carrier, e.g. silica, MgCl2, polymer
• CPC Class Codes: C08F 4/65927 : two cyclopentadienyl rings being mutually bridged
• CPC Class Codes: Y10S 526/904 : Monomer polymerized in presence of transition metal containing catalyst at least part of which is supported on a polymer, e.g. prepolymerized catalysts
• CPC Class Codes: Y10S 526/943 : Polymerization with metallocene catalysts

Abstract

The novel propylene homopolymer and copolymer produced by using a catalyst which is represented by the following formula (I): ##STR1## wherein M is a transition metal; R¹ is a hydrocarbon group of 2 to 6 carbon atoms, R² is an aryl group of 6 to 16 carbon atoms; X¹ and X² are each a halogen atom or the like; and Y is a divalent hydrocarbon group, a divalent silicon-containing group or the like.

Claims

1. A propylene homopolymer obtained by polymerizing propylene in the presence of an olefin polymerization catalyst comprising:

(A) a transition metal compound catalyst component represented by the following formula (I);

##STR22## wherein M is zirconium,

R¹ is an alkyl group of 2 to 4 carbon atoms,

R² is an aryl group selected from the group consisting of phenyl, naphthyl, anthracenyl and phenanthryl,

X¹ and X² are each a hydrogen atom, a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogenated hydrocarbon group of 1 to 20 carbon atoms, an oxygen-containing group or a sulfur-containing group; and

Y is a divalent silicon-containing group selected from the group consisting of alkylsilylene, alkylarysilylene and arylsilylene;

and

(B) at least one compound selected from the group consisting of

(B-1) an organoaluminum oxy-compound, and

(B-2) a compound which reacts with the transition metal compound to form an ion pair.

2. A propylene copolymer containing not less than 50% by mol of propylene unit, which is obtained by copolymerizing propylene and an α

-olefin selected from the group consisting of ethylene and α

-olefins of 4 to 20 carbon atoms in the presence of an olefin polymerization catalyst comprising;

(A) a transition metal compound catalyst component represented by the following formula (I);

##STR23## wherein M is zirconium,

R¹ is an alkyl group of 2 to 4 carbon atoms,

R² is an aryl group selected from the group consisting of phenyl, naphthyl, anthracenyl and phenanthryl, X¹ and X² are each a hydrogen atom, a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogenated hydrocarbon group of 1 to 20 carbon atoms, an oxygen-containing group or a sulfur-containing group; and

Y is a divalent silicon-containing group selected from the group consisting of alkylsilylene, alkylarylsilylene and arylsilylene;

and

(B) at least one compound selected from the group consisting of

(B-1) an organoaluminum oxy-compound, and

(B-2) a compound which reacts with the transition metal compound to form an ion pair.