Metallocene compound, catalyst for olefin polymer, method for producing olefin polymer, and olefin polymer

Patent metadata

Field	Value
Publication number	US-10005864-B2
Application number	US-201715590633-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	Feb 27, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The invention provides a specific metallocene compound and an olefin polymerization catalyst for use for a catalyst for producing an olefin polymer having a sufficiently high molecular weight while maintaining excellent copolymerizability at a polymerization temperature and under polymerization conditions industrially advantageous in polymerization of an olefin such as ethylene or the like, and provides a method for producing an olefin polymer using the catalyst.

First claim

The invention claimed is:

1. A method for producing an olefin polymer, which comprises carrying out an ethylene homopolymerization or ethylene/α-olefin copolymerization in the presence of an olefin polymerization catalyst comprising the following components (A) and (B), and optionally comprising the following component (C):
Component (A): a metallocene compound of formula [I]:

in which:
M represents Ti, Zr, or Hf;
X 1 and X 2 are the same or different, each representing a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an aryloxy group having from 6 to 10 carbon atoms, an alkenyl group having from 2 to 10 carbon atoms, an arylalkyl group having from 7 to 40 carbon atoms, an alkylaryl group having from 7 to 40 carbon atoms, an arylalkenyl group having from 8 to 40 carbon atoms, an alkyl group having from 1 to 20 carbon atoms and substituted with a silyl group having a hydrocarbon group having from 1 to 6 carbon atoms, a substituted amino group having from 1 to 10 carbon atoms, a group OH, or a halogen atom;
R 1 to R 9 and R 11 to R 19 are the same or different, each representing a hydrogen atom, a halogen atom, an alkyl group having from 1 to 10 carbon atoms, a halogenoalkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, a silyl group having a hydrocarbon group having from 1 to 6 carbon atoms, an alkyl group having from 1 to 20 carbon atoms and substituted with a silyl group having a hydrocarbon group having from 1 to 6 carbon atoms, a group —NR 21 2 , a group —SR 21 , a group —OSiR 21 3 , or a group —PR 21 2 , in which R 21 's are the same or different, each representing a halogen atom, an alkyl group having from 1 to 10 carbon atom or an aryl group having from 6 to 20 carbon atoms, the neighboring groups of R 1 to R 9 and R 11 to R 19 optionally form one or more aromatic rings or aliphatic rings along with the atom bonding them, or R 4 and R 5 , or R 4 and R 9 , or R 14 and R 15 , or R 14 and R 19 optionally form one aromatic ring or aliphatic ring along with the atom bonding them;
R 10 and R 20 are the same or different, each representing a hydrogen atom, a halogen atom, an alkyl group having from 1 to 10 carbon atoms, a fluoroalkyl group having from 1 to 10 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, an aryl group having from 6 to 20 carbon atoms, a fluoroaryl group having from 6 to 10 carbon atoms, an aryloxy group having from 6 to 10 carbon atoms, an alkenyl group having from 2 to 10 carbon atoms, an arylalkyl group having from 7 to 40 carbon atoms, an alkylaryl group having from 7 to 40 carbon atoms, or an arylalkenyl group having from 8 to 40 carbon atoms, provided that R 10 and R 20 are not hydrogen atoms at the same time, and R 10 and R 20 optionally form one or more rings along with the atom bonding them;
Component (B): a compound or an ion-exchanging layered silicate, which reacts with Component (A) to form an ion pair; and
Component (C): an organoaluminium compound;
wherein the polymerization temperature is 120° C. or more.

2. The method according to claim 1 , wherein R 5 to R 9 and R 15 to R 19 are the same or different, each representing a hydrogen atom, a halogen atom, an alkyl group having from 1 to 10 carbon atoms, a halogenoalkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 10 carbon atoms, a group —NR 21 2 , a group —SR 21 , a group —OSiR 21 3 , or a group —PR 21 2 , in which R 21 's are the same or different, each representing a halogen atom, an alkyl group having from 1 to 10 carbon atom or an aryl group having from 6 to 10 carbon atoms, and all of R 5 to R 9 and R 15 to R 19 are not hydrogen atoms at the same time.

3. The method according to claim 1 , wherein R 10 and R 20 are the same or different, each representing a halogen atom, an alkyl group having from 1 to 10 carbon atoms, a fluoroalkyl group having from 1 to 10 carbon atoms, an aryl group having from 7 to 10 carbon atoms, a fluoroaryl group having from 6 to 10 carbon atoms, an alkenyl group having from 2 to 10 carbon atoms, an arylalkyl group having from 7 to 40 carbon atoms, an alkylaryl group having from 7 to 40 carbon atoms or an arylalkenyl group having from 8 to 40 carbon atoms, provided that the total of the carbon atoms that R 10 and R 20 contain is 2 or more, and R 10 and R 20 optionally form one or more rings along with the atom bonding them.

4. The method according to claim 1 , wherein R 10 and R 20 form one or more rings along with the atom bonding them.

5. The method according to claim 4 , wherein the ring formed by R 10 and R 20 is a 4-membered ring or a 5-membered ring.

6. The method according to claim 1 , wherein M is Hf.

7. The method according to claim 1 , wherein the component (B) is a boron compound.

8. The method according to claim 1 , wherein the polymerization catalyst comprises components (A), (B), and (C).

Assignees

• Japan Polyethylene Corp

Inventors

• Itagaki Koji
• Sakuragi Tsutomu
• Takahashi Takayoshi

Classifications

• C08F4/65927

  two cyclopentadienyl rings being mutually bridged · CPC title

• C07F17/00 Primary

  Metallocenes · CPC title

• C08F210/16 Primary

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F4/65908

  in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+ · CPC title

• C08F10/00

  Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title