Catalyst component for olefin polymerization, preparation method thereof, and catalyst comprising same

Patent metadata

Field	Value
Publication number	US-9809663-B2
Application number	US-201415029870-A
Country	US
Kind code	B2
Filing date	Oct 17, 2014
Priority date	Oct 18, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

The present invention provides a catalyst component for olefin polymerization and a preparation method thereof, and a catalyst for olefin polymerization and an application thereof. The catalyst component for olefin polymerization comprises reaction products of the following components: (1) a solid component; (2) at least one titanium compound; and (3) at least two internal electron donors, wherein the solid component comprises a magnesium compound represented by formula (1) and an epoxide represented by formula (2), wherein R 1 is a C 1 -C 12 linear or branched alkyl; R 2 and R 3 are identical or different, and are independently hydrogen or unsubstituted or halogen-substituted C 1 -C 5 linear or branched alkyl; X is halogen; m is in a range of from 0.1 to 1.9, n is in a range of from 0.1 to 1.9, and m+n=2.

First claim

What is claimed is:

1. A catalyst component for olefin polymerization, comprising reaction products of the following components:
(1) a solid component;
(2) at least one titanium compound; and
(3) at least two internal electron donors;
wherein the solid component comprises a magnesium compound represented by formula (1) and an epoxide represented by formula (2),

wherein, R I is a C 1 -C 12 linear or branched alkyl; R II and R III are identical or different, and are independently hydrogen or unsubstituted or halogen-substituted C 1 -C 5 linear or branched alkyl; X is halogen; m is in a range of from 0.1 to 1.9, n is in a range of from 0.1 to 1.9, and m+n=2;
wherein the content of the epoxide represented by the formula (2) is in a range of from 0.01 to 0.8 moles per mole of the magnesium compound represented by the formula (1); and
wherein the solid component is obtained by reacting a magnesium halide-alcohol adduct solution with the epoxide represented by the formula (2) in the presence of at least one polymeric dispersion stabilizer.

2. The catalyst component according to claim 1 , wherein, R I is a C 1 -C 8 linear or branched alkyl; R II and R III are independently hydrogen or unsubstituted or halogen-substituted C 1 -C 3 linear or branched alkyl; X is chlorine; m is in a range of from 0.5 to 1.5, n is in a range of from 0.5 to 1.5, and m+n=2.

3. The catalyst component according to claim 1 , wherein, in the solid component, the content of the epoxide represented by the formula (2) is in a range of from 0.02 to 0.5 moles per mole of the magnesium compound represented by the formula (1).

4. The catalyst component according to claim 1 , wherein, relative to one mole of the magnesium compound represented by the formula (1) in the solid component, the amount of the titanium compound is from 5 to 200 moles; and the amount of the internal electron donors is from 0.04 to 0.6 moles.

5. The catalyst component according to claim 1 , wherein the titanium compound is chosen from those of formula Ti(OR IV ) 4-a X a , wherein R IV is a C 1 -C 14 aliphatic hydrocarbyl, X is halogen, and a is an integer ranging from 1 to 4.

6. The catalyst component according to claim 1 , wherein the internal electron donors are a combination of a first internal electron donor and a second internal electron donor, wherein the first internal electron donor is at least one ester of diol, and the second internal electron donor is at least one diether compound, and wherein a molar ratio of the first internal electron donor to the second internal electron donor is in a range of from 0.55:1 to 50:1.

7. The catalyst component according to claim 6 , wherein the ester of diol is chosen from those represent by formula (3):

wherein, R 1 and R 2 are identical or different, and are independently C 1 -C 10 linear or branched alkyl, C 3 -C 20 cycloalkyl, C 6 -C 20 aryl, C 7 -C 20 alkylaryl or C 7 -C 20 arylalkyl, with the hydrogen atom(s) on the phenyl ring in the aryl, the alkylaryl and the arylalkyl being optionally substituted by halogen atom(s); R 3 -R 6 and R 1 -R 2n are identical or different, and are independently hydrogen, halogen, C 1 -C 20 linear or branched alkyl, C 3 -C 20 cycloalkyl, C 6 -C 20 aryl, C 7 -C 20 alkylaryl, C 7 -C 20 arylalkyl, C 2 -C 10 alkenyl or C 10 -C 20 fused-ring aryl, with carbon atom(s) and/or hydrogen atom(s) in R 3 -R 6 and R 1 -R 2n being optionally replaced by heteroatom(s), which is/are chosen from nitrogen, oxygen, sulfur, silicon, phosphorus and halogen, and two or more of R 3 to R 6 and R 1 to R 2n are optionally linked to form a saturated or unsaturated ring; and n is an integer ranging from 0 to 10.

8. The catalyst component according to claim 6 , wherein the diether compound is chosen from those represented by formula (5):

wherein, R I , R II , R III , R IV , R V and R VI are identical or different, and are independently chosen from hydrogen, halogen, linear or branched C 1 -C 20 alkyl, C 3 -C 20 cycloalkyl, C 6 -C 20 aryl, C 7 -C 20 arylalkyl and C 7 -C 20 alkylaryl; R VII and R VII are identical or different, and are independently chosen from linear or branched C 1 -C 20 alkyl, C 3 -C 20 cycloalkyl, C 6 -C 20 aryl, C 7 -C 20 alkylaryl and C 7 -C 20 arylalkyl; and two or more of the R I -R VI groups are optionally linked to form a ring.

9. A method for preparing a catalyst component according to claim 1 , which method comprises the steps of:
(1) preparing a solid component by a process comprising:
(a) reacting a magnesium halide of formula MgX 2 with an alcohol of formula R I OH in the presence of at least one polymeric dispersion stabilizer at 30 to 160° C. in a closed vessel, to form a magnesium halide-alcohol adduct solution; and
(b) reacting the magnesium halide-alcohol adduct solution with an epoxide represented by formula (2):

at 30 to 160° C., to form a solid component,
wherein, X is halogen; R I is a C 1 -C 12 linear or branched alkyl; R II and R III are identical or different, and are independently hydrogen or unsubstituted or halogen-substituted C 1 -C 5 linear or branched alkyl, and
wherein, relative to one mole of the magnesium halide, the amount of the alcohol used ranges from 3 to 30 moles and the amount of the epoxide represented by the formula (2) used ranges from 1 to 10 moles, and the polymeric dispersion stabilizer is used in an amount of from 0.1 to 10 wt %, based on the total weight of the magnesium halide and the alcohol; and
(2) contacting and reacting the solid component from step (1) with a titanium compound in the presence or absence of an inert solvent, and adding at least two internal electron donors at one or more stages before, during and/or after the reaction.

10. The method according to claim 9 , wherein, relative to one mole of the magnesium halide, the amount of the alcohol used ranges from 4 to 20 moles and the amount of the epoxide represented by the formula (2) used ranges from 2 to 6 moles, and the polymeric dispersion stabilizer is used in an amount of from 0.2 to 5 wt %, based on the total weight of the magnesium halide and the alcohol.

11. The method according to claim 9 , wherein the magnesium halide is at least one chosen from magnesium dichloride, magnesium dibromide and magnesium diiodide, and the alcohol is at least one chosen from methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, pentanol, isopentanol, n-hexanol, n-octanol, and 2-ethylhexanol, and the epoxide is at least one chosen from epoxy ethane, epoxy propane, epoxy butane, epoxy chloropropane, epoxy chlorobutane, epoxy bromopropane, and epoxy bromobutane.

12. The method according to claim 9 , wherein the polymeric dispersion stabilizer is at least one chosen from polyacrylates, styrene-maleic anhydride copolymers, polystyrene sulfonates, naphthalenesulfonic acid-formaldehyde condensation products, condensed alkyl phenyl ether sulfates, condensed alkylphenol poly oxyethylene ether phosphates, oxyalkyl acrylate copolymer-modified poly ethyleneimines, poly(l-dodecyl-4-vinylpyridinium bromide)s, poly(vinylbenzyl trimethyl ammonium salt)s, poly(vinyl alcohol)s, polyacrylamides, ethylene oxide-propylene oxide block copolymers, polyvinylpyrrolidones (PVPs), poly(vinylpyrrolidone-

Assignees

• China Petroleum & Chem Corp
• Beijing Res Inst Chemical Ind China Petroleum & Chemical Corp
• Beijing Reaearch Inst Of Chemical Ind China Petroleum & Chemical Corp

Inventors

• Xia Xianzhi
• Zhao Jin
• Li Weili
• Liu Yuexiang
• Ling Yongtai
• Gao Ping
• Tan Yang
• Gao Futang
• Peng Renqi
• Zhang Jigui

Classifications

• C08F6/00

  Post-polymerisation treatments (C08F8/00 takes precedence; of conjugated diene rubbers C08C) · CPC title

• C08F10/00

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

• C08F4/6425

  containing magnesium · CPC title

• C08F4/64

  Titanium, zirconium, hafnium or compounds thereof · CPC title

• C08F10/06 Primary

  Propene · CPC title