Solid catalyst component for polymerization of olefins, catalyst for polymerization of olefins, and method for producing olefin polymer

Patent metadata

Field	Value
Publication number	US-9683059-B2
Application number	US-201314427099-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Sep 28, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A solid catalyst component for olefin polymerization makes it possible to polymerize an olefin with high polymerization activity when used for an olefin polymerization catalyst, and produce an olefin polymer having a low fine powder content, a low coarse powder content, and a low volatile organic compound (VOC) content in high yield. The solid catalyst component for olefin polymerization is produced by suspending (a) a dialkoxymagnesium, and (b) at least one alcohol selected from ethanol, n-propanol, n-butanol, isopropanol, isobutanol, and t-butanol, in an inert organic solvent so that the total amount of the alcohol is 0.5 to 1.5 parts by mass based on 100 parts by mass of the dialkoxymagnesium, to prepare a suspension, and bringing (c) an internal electron donor and (d) a titanium halide compound into contact with the suspension.

First claim

The invention claimed is:

1. A solid catalyst component for olefin polymerization that is produced by suspending (a) a dialkoxymagnesium, and (b) at least one alcohol selected from ethanol, n-propanol, n-butanol, isopropanol, isobutanol, and t-butanol, in an inert organic solvent so that a total amount of the alcohol is 0.5 to 1.5 parts by mass based on 100 parts by mass of the dialkoxymagnesium, to prepare a suspension, and bringing (c) an internal electron donor and (d) a titanium halide compound into contact with the suspension.

2. An olefin polymerization catalyst comprising:
(α) the solid catalyst component according to claim 1 ;
(β) an organoaluminum compound represented by a general formula (I),
R 1 p AlQ 3−p   (I)

wherein R 1 is a hydrocarbyl group having 1 to 6 carbon atoms, provided that a plurality of R 1 are either identical or different when a plurality of R 1 are present, Q is a hydrogen atom, a hydrocarbyloxy group having 1 to 6 carbon atoms, or a halogen atom, provided that a plurality of Q are either identical or different when a plurality of Q are present, and p is a real number that satisfies 0<p≦3; and
(γ) an external electron donor compound.

3. The olefin polymerization catalyst according to claim 2 , wherein the external electron donor compound (γ) is one or more compounds selected from an organosilicon compound represented by a general formula (II) and an aminosilane compound represented by a general formula (III),
R 2 q Si(OR 3 ) 4−q   (II)

wherein R 2 is an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, an aromatic hydrocarbon group having 6 to 15 carbon atoms, or a substituted aromatic hydrocarbon group having 6 to 15 carbon atoms, provided that a plurality of R 2 are either identical or different when a plurality of R 2 are present, R 3 is an alkyl group having 1 to 4 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, or a substituted aromatic hydrocarbon group having 7 to 12 carbon atoms, provided that a plurality of R 3 are either identical or different when a plurality of R 3 are present, and q is an integer from 0 to 3,
(R 4 R 5 N) s SiR 6 4−s   (III)

wherein R 4 and R 5 are a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a vinyl group, an 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 aryl group having 6 to 20 carbon atoms, provided that R 4 and R 5 that form the R 4 R 5 N group are either identical or different, and optionally bond to each other to form a ring, and a plurality of R 4 R 5 N groups are either identical or different when a plurality of R 4 R 5 N groups are present, R 6 is an alkyl group having 1 to 20 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a vinyloxy group, an alkenyloxy group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, a cycloalkyloxy group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aryloxy group having 6 to 20 carbon atoms, provided that a plurality of R 6 are either identical or different when a plurality of R 6 are present, and s is an integer from 1 to 3.

4. The olefin polymerization catalyst according to claim 3 , wherein the external electron donor compound (γ) is phenyltrimethoxysilane, n-butyltrimethoxysilane, cyclopentyltrimethoxysilane, cyclohexyltrimethoxysilane, phenyltriethoxysilane, n-butyltriethoxysilane, cyclopentyltriethoxysilane, cyclohexyltriethoxysilane, t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane, diisopropyldimethoxysilane, diisobutyldimethoxysilane, diisopentyldimethoxysilane, diphenyldimethoxysilane, dicyclopentyldimethoxysilane, cyclohexylmethyldimethoxysilane, cyclohexylcyclopentyldimethoxysilane, tetramethoxysilane, tetraethoxysilane, t-butylmethylbis(ethylamino)silane, dicyclohexylbis(ethylamino)silane, dicyclopentylbis(ethylamino)silane, bis(perhydroisoquinolino)dimethoxysilane, diethylaminotrimethoxysilane, or diethylaminotriethoxysilane.

5. The olefin polymerization catalyst according to claim 2 , wherein the external electron donor compound (γ) is one or more compounds selected from a diether compound represented by a general formula (IV),
R 7 OCH 2 CR 8 R 9 CH 2 OR 10   (IV)

wherein R 8 and R 9 are a hydrogen atom, a halogen atom, an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, a halogen-substituted aromatic hydrocarbon group having 6 to 12 carbon atoms, a substituted aromatic hydrocarbon group having 7 to 12 carbon atoms, an alkylamino group having 1 to 12 carbon atoms, or a dialkylamino group having 2 to 12 carbon atoms, provided that R 8 and R 9 are either identical or different, and optionally bond to each other to form a ring, and R 7 and R 10 are an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, a halogen-substituted aromatic hydrocarbon group having 6 to 12 carbon atoms, or a substituted aromatic hydrocarbon group having 7 to 12 carbon atoms, provided that R 7 and R 10 are either identical or different.

6. The olefin polymerization catalyst according to claim 5 , wherein the diether compound is 2-isopropyl-2-isobutyl-1,3-dimethoxypropane or 9,9-bis(methoxymethyl)fluorene.

7. A method for producing an olefin polymer comprising polymerizing an olefin in the presence of the olefin polymerization catalyst according to claim 2 .

8. A method for producing an olefin polymer comprising polymerizing an olefin in the presence of the olefin polymerization catalyst according to claim 3 .

9. A method for producing an olefin polymer comprising polymerizing an olefin in the presence of the olefin polymerization catalyst according to claim 4 .

10. A method for producing an olefin polymer comprising polymerizing an olefin in the presence of the olefin polymerization catalyst according to claim 5 .

11. A method for producing an olefin polymer comprising polymerizing an olefin in the presence of the olefin polymerization catalyst according to claim 6 .

Assignees

• Toho Titanium Co Ltd

Inventors

• Hosaka Motoki
• Umebayashi Hidetoshi
• Sugano Toshihiko

Classifications

• C08F210/16

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

• C08F297/08

  polymerising mono-olefins · CPC title

• C08F4/6548

  magnesium or compounds thereof, not provided for in C08F4/6543 or C08F4/6546 · CPC title

• C08F4/6465

  containing silicium · CPC title

• C08F4/651

  Pretreating with non-metals or metal-free compounds · CPC title