# US 10,246,530 B2 · Method for producing solid catalyst component for olefin polymerization, catalyst for olefin polymerization and a process for propylene polymerization

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- Number: US 10,246,530 B2
- Document ID: US10246530B2
- Status: Granted
- Kind: B2
- Application number: 15/634,410
- Filed: 2017-06-27
- Published: 2018-12-27
- Granted: 2019-04-02
- Earliest claimed: 2017-06-27
- Assignees: Toho Titanium Co., Ltd.
- Applicants: Toho Titanium Co., Ltd.
- Inventors: Motoki Hosaka; Toshihiko Sugano; Tsutomu Uzawa
- Web page: https://patentgrep.com/patent/US10246530B2

## CPC

- C08F 10/06: Propene
- C08F 210/16: Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
- C08F 10/02: Ethene
- C08F 110/06: Propene
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

A method for producing a solid catalyst for olefin (co)polymerization includes bringing into contact with each other a magnesium compound, a tetravalent titanium halide compound, an organic compound represented the following general formula (1) R1k(C6H4-k)(COOR2)(COOR3) (1) and an organic compound represented the following general formula (2) R4R5C═C (COOR6)(COOR7) (2) wherein R1 is a halogen atom or an alkyl group, R2 and R3 are a linear alkyl group, R4 and R5 are independently an atom or group selected from a hydrogen atom, halogen, a linear alkyl group, a branched alkyl group a vinyl group, a linear or branched alkenyl group, a cycloalkenyl group, an aromatic hydrocarbon group, and R6 and R7 are independently a linear alkyl group, a branched alkyl group, a vinyl group, a linear or branched alkenyl group a cycloalkyl group, a cycloalkenyl group, or an aromatic hydrocarbon group.

## Claims

### Claim 1

A method for producing an olefin polymerization catalyst component, the method comprising:
bringing a magnesium compound, a tetravalent titanium halide compound, an organic compound represented the following general formula (1)
R1k(C6H4-k)(COOR2)(COOR3) (1) and
an organic compound represented the following general formula (2)
R4R5C═C(COOR6)(COOR7) (2)
into contact with each other at the same step,
wherein R1 is a halogen atom or an alkyl group having 1 to 8 carbon atoms, R2 and R3 are a linear alkyl group having 1 to 6 carbon atoms, provided that R2 and R3 are either identical or different, and k is an integer from 0 to 4, provided that a plurality of R1 are either identical or different when k is an integer from 2 to 4, and
wherein R4 and R5 are independently an atom or group selected from a hydrogen atom, halogen, a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, a linear or branched alkenyl group having 3 to 20 atoms, a cycloalkenyl group having 3 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, provided that R4 and R5 optionally bond to each other to form a ring, and the number of carbon atoms of R5 is 2 or more when R4 is a hydrogen atom or a methyl group; and
wherein R6 and R7 are independently a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, a linear or branched alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, a cycloalkenyl group having 3 to 20 carbon atoms, or an aromatic hydrocarbon group having 6 to 20 atoms.

### Claim 2 (depends on 1)

A method for producing an olefin polymerization catalyst component according to the claim 1, the method comprising:
a first step that brings a magnesium compound and a tetravalent titanium halide compound into contact with each other to make a reaction, followed by removing the reaction medium and optionally washing;
a second step that brings a tetravalent titanium halide compound into contact with a product obtained by the first step to make a reaction, followed by removing the reaction medium and optionally washing;
wherein compounds selected respectively from an organic compound represented by the following general formula (1) and an organic compound represented by the following general formula (2) are further added in at least either the first step and the second step.

### Claim 3 (depends on 2)

A method for producing an olefin polymerization catalyst component according to the claim 2, the method further comprising:
a third step that brings a an organic compound represented the following general formula (1) and an organic compound represented the following general formula (2) into contact with a product obtained by the second step to make a reaction, followed by removing the reaction medium and optionally washing.

### Claim 4 (depends on 1)

An olefin polymerization catalyst includes (I) the solid catalyst component for olefin polymerization obtained by the method according to claim 1, (II) an organo aluminum compound represented by the following general formula (3),
R8pAlQ3-p (3) and
(III) an external donor compound represented by the following general formula (4) or an external donor compound represented by the following general formula (5)
R9qSi(OR10)4-q (4)
(R11R12N)sSiR134-s (5)
wherein R8 is an alkyl group having 1 to 6 carbon atoms; Q is a hydrogen atom or halogen atom; and p is an integer from 0 to 3; and
wherein R9 is an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a phenyl group, a vinyl group, an allyl group, or an aralkyl group, provided that a plurality of R9 are either identical or different when a plurality of R9 are present;
R10 is an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group, a vinyl group, an allyl group, or an aralkyl group, provided that a plurality of R10 are either identical or different when a plurality of R10 are present; and q is an integer from 0 to 3;
R11 and R12 are a hydrogen atom, a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, an allyl group, or an aralkyl group, a cycloalkyl group having 3 to 20 carbon atoms, or aryl group, provided that R11 and R12 are either identical or different, and optionally bond to each other to form a ring;
R13 is a a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, an allyl group, or an aralkyl group, a linear or branched alkoxy group having 1 to 20 carbon atoms, a vinyloxy group, an allyloxy group, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group, or an aryloxy group, provided that a plurality of R13 are either identical or different when a plurality of R13 are present; and s is an integer from 0 to 3.

### Claim 5 (depends on 1)

A process for propylene polymerization wherein propylene is contacted by a catalyst comprising the catalyst component according to claim 1, an organoaluminum compound, and an external electron donor compound.