CN116023548A - External electron donor composition, application thereof, catalyst system and olefin polymerization method - Google Patents

External electron donor composition, application thereof, catalyst system and olefin polymerization method Download PDF

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CN116023548A
CN116023548A CN202111257736.3A CN202111257736A CN116023548A CN 116023548 A CN116023548 A CN 116023548A CN 202111257736 A CN202111257736 A CN 202111257736A CN 116023548 A CN116023548 A CN 116023548A
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polyoxyethylene ether
ether
electron donor
amine value
formula
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周奇龙
徐秀东
于金华
张锐
宋维玮
李凤奎
尹珊珊
郎旭东
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
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    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

The invention discloses an external electron donor composition, application thereof, a catalyst system for olefin polymerization and a method for olefin polymerization. The external electron donor composition comprises an alkylamine polyoxyethylene ether compound shown in a formula (I) and a siloxane compound shown in a formula (II). The external electron donor composition of the invention is used as an external electron donor in a catalyst system for olefin polymerization, has the characteristic of high-temperature self-inactivation when olefin polymerization is prepared, and has the characteristics of high activity, good hydrogen regulation sensitivity and high orientation capability.
Figure DDA0003324641170000011
R 1 ” m” R 2 ” n” Si(OR 3” ) 4‑m”‑n” (II)。

Description

External electron donor composition, application thereof, catalyst system and olefin polymerization method
Technical Field
The present invention relates to an external electron donor composition for olefin polymerization, a catalyst system comprising the external electron donor composition, and a process for olefin polymerization.
Background
Ziegler-Natta catalyst for CH 2 =chr olefin polymerization typically comprises the following three components: a solid titanium catalyst component having magnesium, titanium, halogen and an internal electron donor as essential components; an alkyl aluminum compound used as a cocatalyst; and an external electron donor compound for further improving the catalyst performance. The hydrogen sensitivity and orientation ability and even the microstructure of the polymer are different when different external electron donors are applied to the same solid titanium catalyst component.
As the olefin polymerization process is accompanied by an exotherm. Local heat removal is not timely, and temperature rise can be caused. If the polymerization rate is maintained at a higher rate with increasing temperature, localized overheating is exacerbated, thereby introducing plasticization and agglomeration of the polymer and increasing the risk of steady operation of the device. This phenomenon occurs in commercial gas phase polypropylene process units. If the Ziegler-Natta catalyst used is one whose activity decreases drastically with increasing temperature, i.e. the catalyst has the characteristic of self-deactivation at high temperatures, this will help to reduce this risk. Therefore, the Ziegler-Natta catalyst system which has the characteristics of activity, orientation capability and the like and has high-temperature self-deactivation has important application value.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel external electron donor composition for Ziegler-Natta catalysts for olefin polymerization, which is used as an external electron donor in a catalyst system for olefin polymerization, and the catalyst system has the characteristics of high-temperature self-deactivation, high activity, good stereospecificity and good hydrogen regulation sensitivity when being used for olefin polymerization.
The first aspect of the invention provides an external electron donor composition, which comprises an alkylamine polyoxyethylene ether compound shown in a formula (I) and a siloxane compound shown in a formula (II), is used for olefin polymerization,
Figure BDA0003324641160000021
R 1 ” m” R 2 ” n” Si(OR 3” ) 4-m”-n” (II)，
in the formula (I), m and n are the same or different and are each independently integers of 1-20, and m+n is less than 40; r is selected from C 1 -C 20 Straight-chain alkane, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Alkylaryl and C of (C) 7 -C 20 Wherein a hydrogen atom on a carbon in the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl group is optionally substituted or unsubstituted with a heteroatom, alkyl, or alkoxy, and a carbon atom on the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl backbone is optionally substituted or unsubstituted with a heteroatom;
in the formula (II), R 1 "and R 2 "same or different" each independently selected from halogen, hydrogen atom, C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); m 'and n' are each independently selected from integers from 0 to 3, and m '+n'. <4。
According to some embodiments of the external electron donor compositions of the present invention, the "optionally substituted with a heteroatom" means that the heteroatom may or may not be substituted. The hetero atom includes a halogen atom, an oxygen atom, a nitrogen atom, a silicon atom, and the like. According to the invention, when bonded to form a ring, a double bond or a heteroatom may or may not be present in the backbone of the formed ring.
According to some embodiments of the external electron donor composition of the present invention, in formula (I), R is selected from C 4 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C of (2) 7 -C 10 Alkylaryl and C of (C) 7 -C 10 An aralkyl group of (a).
According to some embodiments of the external electron donor composition of the invention, m+n < 30.
According to some embodiments of the external electron donor composition of the invention, the heteroatom is selected from halogen atoms.
According to some embodiments of the external electron donor composition of the present invention, the alkylamine polyoxyethylene ether compound represented by formula (I) is at least one selected from the group consisting of N-butyldiethanolamine, butylaminoethylene ether, N-pentyldiethanolamine, pentylamine polyoxyethylene ether, N-hexyldiethanolamine, hexylamine polyoxyethylene ether, N-heptyldiethanolamine, heptylamine polyoxyethylene ether, N-octyldiethanolamine, octylamine polyoxyethylene ether, N-nonyldiethanolamine, nonylamine polyoxyethylene ether, N-decyldiethanolamine, decylamine polyoxyethylene ether, N-undecyldiethanolamine, undecylamine polyoxyethylene ether, N-dodecyldiethanolamine, dodecylpolyoxyethylene ether, N-tridecyldiethanolamine, tridecylpolyoxyethylene ether, N-tetradecyldiethanolamine, tetradecylamine polyoxyethylene ether, N-pentadecylethanolamine, pentadecylamine polyoxyethylene ether, N-hexadecyldiethanolamine, hexadecylamine polyoxyethylene ether, N-heptadecyldiethanolamine, heptadecylamine polyoxyethylene ether, N-octadecyldiethanolamine, and octadecylamine polyoxyethylene ether.
Preferably, the alkylamine polyoxyethylene ether compound shown in the formula (I) is selected from N-butyldiethanolamine (m=n=1), butylaminoethylene ether (m+n=5), butylaminoethylene ether (m+n=8), butylaminoethylene ether (m+n=10), butylaminoethylene ether (m+n=15), butylaminoethylene ether (m+n=20), butylaminoethylene ether (m+n=25), N-pentylbiethanolamine (m=1), pentylamine polyoxyethylene ether (m+n=5), pentylamine polyoxyethylene ether (m+n=8), pentylamine polyoxyethylene ether (m+n=10), pentylamine polyoxyethylene ether (m+n=15), pentylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=25), N-hexyldiethanolamine (m=1), hexylamine polyoxyethylene ether (m+n=5), hexylamine polyoxyethylene ether (m+n=8), hexylamine polyoxyethylene ether (m+n=10), hexylamine polyoxyethylene ether (m+n=15), hexylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=20) N-heptyldiethanolamine (m=1), heptylamine polyoxyethylene ether (m+n=5), heptylamine polyoxyethylene ether (m+n=8), heptylamine polyoxyethylene ether (m+n=10), heptylamine polyoxyethylene ether (m+n=15), heptylamine polyoxyethylene ether (m+n=20), heptylamine polyoxyethylene ether (m+n=25), N-octyldiethanolamine (m=n=1), octylamine polyoxyethylene ether (m+n=5), octylamine polyoxyethylene ether (m+n=8), octylamine polyoxyethylene ether (m+n=10), octylamine polyoxyethylene ether (m+n=15), octylamine polyoxyethylene ether (m+n=20), octylamine polyoxyethylene ether (m+n=25), N-nonylamine polyoxyethylene ether (m=n=1), nonylamine polyoxyethylene ether (m+n=5), nonylamine polyoxyethylene ether (m+n=10), nonylamine polyoxyethylene ether (m+n=15), nonylamine polyoxyethylene ether (m+n=20), nonylamine polyoxyethylene ether (m+n=n=5), nonylamine polyoxyethylene ether (m+n=n=25), decylamine polyoxyethylene ether (m+n=1), n=n=5), decyl amine polyoxyethylene ether (m+n=8), decyl amine polyoxyethylene ether (m+n=10), decyl amine polyoxyethylene ether (m+n=15), decyl amine polyoxyethylene ether (m+n=20), decyl amine polyoxyethylene ether (m+n=25), N-undecylenoyl diethanolamine (m+n=1), undecylenoyl polyoxyethylene ether (m+n=5), undecylenoyl polyoxyethylene ether (m+n=8), undecylenoyl polyoxyethylene ether (m+n=10), undecylenoyl polyoxyethylene ether (m+n=15), undecylenoyl polyoxyethylene ether (m+n=20), undecylenoyl polyoxyethylene ether (m+n=25), N-dodecyl diethanolamine (m=n=1), dodecyl polyoxyethylene ether (m+n=5), dodecyl polyoxyethylene ether (m+n=8), dodecyl polyoxyethylene ether (m+n=10), dodecyl polyoxyethylene ether (m+n=15), dodecyl polyoxyethylene ether (m+n=20), dodecyl polyoxyethylene ether (m+n=25), N-tridecyl diethanolamine (m=n=1), tridecyl polyoxyethylene ether (m+n=5), and tridecyl polyoxyethylene ether (m+n=8) Tridecyl polyoxyethylene ether (m+n=10), tridecyl polyoxyethylene ether (m+n=15), tridecyl polyoxyethylene ether (m+n=20), tridecyl polyoxyethylene ether (m+n=25), N-tetradecyl diethanolamine (m=n=1), tetradecyl polyoxyethylene ether (m+n=5), tetradecyl polyoxyethylene ether (m+n=8), tetradecyl polyoxyethylene ether (m+n=10), tetradecyl polyoxyethylene ether (m+n=15), tetradecyl polyoxyethylene ether (m+n=20), tetradecyl polyoxyethylene ether (m+n=25), N-pentadecyl diethanolamine (m=n=1), pentadecyl polyoxyethylene ether (m+n=5), pentadecyl polyoxyethylene ether (m+n=8), pentadecyl polyoxyethylene ether (m+n=10), pentadecyl polyoxyethylene ether (m+n=15), pentadecyl polyoxyethylene ether (m+n=20), N-hexadecyl diethanolamine (m=1), hexadecyl polyoxyethylene ether (m+n=5), hexadecyl polyoxyethylene ether (m+n=8), hexadecyl polyoxyethylene ether (m+n=10) At least one of hexadecylamine polyoxyethylene ether (m+n=15), hexadecylamine polyoxyethylene ether (m+n=20), hexadecylamine polyoxyethylene ether (m+n=25), N-heptadecylethanolamine (m=n=1), heptadecylamine polyoxyethylene ether (m+n=5), heptadecylamine polyoxyethylene ether (m+n=8), heptadecylamine polyoxyethylene ether (m+n=10), heptadecylamine polyoxyethylene ether (m+n=15), heptadecylamine polyoxyethylene ether (m+n=20), heptadecylamine polyoxyethylene ether (m+n=25), N-octadecyldiethanolamine (m=n=1), octadecylamine polyoxyethylene ether (m+n=2), octadecylamine polyoxyethylene ether (m+n=5), octadecylamine polyoxyethylene ether (m+n=8), octadecylamine polyoxyethylene ether (m+n=10), octadecylamine polyoxyethylene ether (m+n=15), octadecylamine polyoxyethylene ether (m+n=20), and octadecylamine polyoxyethylene ether (m+n=25). The alkylamine polyoxyethylene ether compound is prepared by using fatty amine and ethylene oxide, and the obtained product is measured by the total amine value and the tertiary amine value to obtain the value of m+n in the product. For example N-butyldiethanolamine (m=n=1), N-butyldiethanolamine, which can also be written as m=n=1; butylaminoethylene ether (m+n=5), or butylaminoethylene ether having m+n=5. Other similar items are not listed.
Butylamino polyoxyethylene ether, when the total amine value and the tertiary amine value are 180-200mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are both 125-140mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 104-115mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 72-80mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 55-62mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 45-50mgKOH/g, then m+n=25.
Pentylamine polyoxyethylene ether, when the total amine value and the tertiary amine value are 173-192mgKOH/g, the m+n=5; when the total amine value and the tertiary amine value are 121-134mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are measured to be 100-112mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 71-79mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 55-60mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 45-50mgKOH/g, then m+n=25.
Hexyl amine polyoxyethylene ether, when the total amine value and tertiary amine value are 166-183mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are 117-130mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 98-109mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are both 70-77mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 54-60mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 44-49mgKOH/g, then m+n=25.
When the total amine value and the tertiary amine value of the heptylamine polyoxyethylene ether are 159-176mgKOH/g, the m+n=5; when the total amine value and the tertiary amine value are 114-126mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are measured to be 96-106mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 68-76mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 53-59mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 44 to 48mgKOH/g, then m+n=25.
Octyl amine polyoxyethylene ether, when the total amine value and tertiary amine value are 152-168mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are 111-122mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 94-103mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 67-75mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 53-58mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 43-48mgKOH/g, then m+n=25.
The total amine value and the tertiary amine value of the polyoxyethylene nonylamine ether are 147-162mgKOH/g, and m+n=5; when the total amine value and the tertiary amine value are 108-119mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are measured to be 91-101mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 66-73mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 52-58mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 43-47mgKOH/g, then m+n=25.
Decyl amine polyoxyethylene ether, when the total amine value and tertiary amine value are 141-156mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are both 105-116mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are both 89-99mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 65-72mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 51-57mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 42-47mgKOH/g, then m+n=25.
Undecylamine polyoxyethylene ether, when the total amine value and tertiary amine value are 136-150mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are 102-112mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are both 87-96mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 64-71mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 51-56mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 42-46mgKOH/g, then m+n=25.
Dodecylamine polyoxyethylene ether, when the total amine value and tertiary amine value are 130-145mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are both 99-110mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 82-94mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 63-70mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 50-55mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 41-46mgKOH/g, then m+n=25.
Tridecyl polyoxyethylene ether, when the total amine value and tertiary amine value are 127-140mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are 97-107mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 83-92mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are measured to be 62-69mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 49-55mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 41-45mgKOH/g, then m+n=25.
When the total amine value and the tertiary amine value of the tetradecyl polyoxyethylene are 123-136mgKOH/g as measured by the ether, m+n=5; when the total amine value and the tertiary amine value are 94-104mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 82-90mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 61-67mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 49-54mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 41-45mgKOH/g, then m+n=25.
Pentadecanamide polyoxyethylene ether, when the total amine value and the tertiary amine value are 119-132mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are measured to be 62-102mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are both 80-88mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are measured to be 60-66mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 48-53mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 40-44mgKOH/g, then m+n=25.
Sixteen amine polyoxyethylene, ether measured with the total amine value and tertiary amine value of 115-128mgKOH/g, then its m+n=5; when the total amine value and the tertiary amine value are both 90-99mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 78-86mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 59-65mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 48-53mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 40-44mgKOH/g, then m+n=25.
Seventeen amine polyoxyethylene ether, when the total amine value and the tertiary amine value are 112-124mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are 88-97mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are 76-85mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 58-64mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are measured to be 47-52mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 39-43mgKOH/g, then m+n=25.
Octadecylamine polyoxyethylene ether, when the total amine value and the tertiary amine value are 149-165mgKOH/g, m+n=2; when the total amine value and the tertiary amine value are 109-120mgKOH/g, m+n=5; when the total amine value and the tertiary amine value are both 86-95mgKOH/g, m+n=8; when the total amine value and the tertiary amine value are measured to be 75-83mgKOH/g, m+n=10; when the total amine value and the tertiary amine value are 57-63mgKOH/g, m+n=15; when the total amine value and the tertiary amine value are 46-51mgKOH/g, m+n=20; when the total amine value and the tertiary amine value are both 39-43mgKOH/g, then m+n=25.
According to some embodiments of the external electron donor composition of the present invention, in formula (II), R 1 "and R 2 "each independently selected from halogen, hydrogen atom, C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 Is a haloalkyl group of (2).
According to some embodiments of the external electron donor composition of the present invention, R in formula (II) is, in practical use, selected from the group consisting of 3 The "group" may be a mixture of several alkyl groups in any proportion, or may be a mixture of compounds having different numbers of alkoxy groups (different values of n).
According to some embodiments of the external electron donor composition of the present invention, the siloxane compound is selected from trimethylmethoxysilane, diisopropyldimethoxysilane, diisobutyldimethoxysilane, isopropylisobutyldimethoxysilane, di-tert-butyldimethoxysilane, tert-butylmethyldimethoxysilane, tert-butylethyldimethoxysilane, tert-butylpropyldimethoxysilane, tert-butylisopropyldimethoxysilane, cyclohexylmethyldimethoxysilane, dicyclohexyldimethoxysilane, cyclohexyl-tert-butyldimethoxysilane, cyclopentylmethyldimethoxysilane, cyclopentylethyldimethoxysilane, dicyclopentyldimethoxysilane, cyclopentylcyclohexyldimethoxysilane, bis (2-methylcyclopentyl) dimethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane at least one of phenyltriethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, isopropyltrimethoxysilane, isopropyltriethoxysilane, butyltrimethoxysilane, butyltriethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, pentyltrimethoxysilane, isopentyltrimethoxysilane, cyclopentyltrimethoxysilane, cyclohexyltrimethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, tetramethoxysilane, tetraethoxysilane and tetrabutoxysilane.
According to some embodiments of the external electron donor composition of the present invention, the alkylamine polyoxyethylene ether compound represented by formula (I) may account for 5 to 95 mol% of the external electron donor composition, for example, 10 mol%, 15 mol%, 20 mol%, 25 mol%, 30 mol%, 35 mol%, 40 mol%, 45 mol%, 50 mol%, 55 mol%, 60 mol%, 65 mol%, 70 mol%, 75 mol%, 80 mol%, 85 mol%, 90 mol%, and any value therebetween. Preferably 5 to 60 mol%, more preferably 10 to 40 mol%.
The inventors of the present invention have unexpectedly found that using a composition comprising an aminopolyoxyethylene ether compound represented by the formula (I) and a siloxane compound represented by the formula (II) as an external electron donor of a Ziegler-Natta catalyst system, the catalyst system is applied to CH 2 =chr olefin polymerization has the characteristic of high temperature self-deactivation.
The high-temperature self-deactivation performance of the invention means that the activity of the catalyst is greatly reduced but not reduced to an inactive state at a specific test temperature. Generally, ziegler-Natta catalysts fall off to some extent when the polymerization temperature is increased above 90 ℃. The high-temperature self-deactivation means that when the polymerization temperature is raised from 70 ℃ to 100 ℃ in general, the polymerization activity of the catalyst is reduced to less than 30% of the original activity when the change of the bulk concentration of the monomer is not considered.
In a second aspect, the present invention provides the use of an external electron donor composition as described above as an external internal electron donor in a catalyst system for the polymerization of olefins.
Adopts the bookWhen the external electron donor composition is used in a Ziegler-Natta catalyst system, the catalyst system is applied to CH 2 The catalyst has the characteristics of high activity, good hydrogen regulation sensitivity and high orientation capability during the polymerization of CHR olefin, and has the characteristic of high-temperature self-deactivation.
In a third aspect, the present invention provides a catalyst system for the polymerization of olefins comprising
(1) An external electron donor composition a;
(2) A solid catalyst component B containing a magnesium compound, a titanium compound, a halogen and an internal electron donor compound; and
(3) An alkylaluminum compound C as a cocatalyst;
wherein the external electron donor composition A comprises an alkylamine polyoxyethylene ether compound shown in a formula (I) and a siloxane compound shown in a formula (II),
Figure BDA0003324641160000091
(I)，R 1 ” m” R 2 ” n” Si(OR 3 ”) 4-m”-n” (II)，
in the formula (I), m and n are the same or different and are each independently integers of 1-20, and m+n is less than 40; r is selected from C 1 -C 20 Straight-chain alkane, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Alkylaryl and C of (C) 7 -C 20 Wherein a hydrogen atom on a carbon in the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl group is optionally substituted or unsubstituted with a heteroatom, alkyl, or alkoxy, and a carbon atom on the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl backbone is optionally substituted or unsubstituted with a heteroatom;
In the formula (II), R 1 "and R 2 "same or different" each independently selected from halogen, hydrogen atom, C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); m 'and n' are each independently selected from integers from 0 to 3, and m '+n'.<4。
According to some embodiments of the catalyst system of the present invention, the "optionally substituted with a heteroatom" means that the heteroatom may or may not be substituted. The hetero atom includes a halogen atom, an oxygen atom, a nitrogen atom, a silicon atom, and the like. According to the invention, when bonded to form a ring, a double bond or a heteroatom may or may not be present in the backbone of the formed ring.
According to some embodiments of the catalyst system of the present invention, in formula (I), R is selected from C 4 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C of (2) 7 -C 10 Alkylaryl and C of (C) 7 -C 10 An aralkyl group of (a).
According to some embodiments of the catalyst system of the invention, m+n < 30.
According to some embodiments of the catalyst system of the invention, the heteroatom is selected from halogen atoms.
According to some embodiments of the catalyst system of the present invention, the alkylamine polyoxyethylene ether compound represented by formula (I) is selected from at least one of N-butyldiethanolamine, butylaminoethylene ether, N-pentyldiethanolamine, pentylamine polyoxyethylene ether, N-hexyldiethanolamine, hexylamine polyoxyethylene ether, N-heptyldiethanolamine, heptylamine polyoxyethylene ether, N-octyldiethanolamine, octylamine polyoxyethylene ether, N-nonyldiethanolamine, nonylamine polyoxyethylene ether, N-decyldiethanolamine, decylamine polyoxyethylene ether, N-undecyldiethanolamine, undecylamine polyoxyethylene ether, N-dodecyldiethanolamine, dodecylpolyoxyethylene ether, N-tridecyldiethanolamine, tridecylpolyoxyethylene ether, N-tetradecyldiethanolamine, tetradecylamine polyoxyethylene ether, N-pentadecylethanolamine, pentadecylamine polyoxyethylene ether, N-hexadecyldiethanolamine, hexadecylamine polyoxyethylene ether, N-heptadecyldiethanolamine, heptadecylamine polyoxyethylene ether, N-octadecyldiethanolamine, and octadecylamine polyoxyethylene ether.
Preferably, the alkylamine polyoxyethylene ether compound shown in the formula (I) is selected from N-butyldiethanolamine (m=n=1), butylaminoethylene ether (m+n=5), butylaminoethylene ether (m+n=8), butylaminoethylene ether (m+n=10), butylaminoethylene ether (m+n=15), butylaminoethylene ether (m+n=20), butylaminoethylene ether (m+n=25), N-pentylbiethanolamine (m=1), pentylamine polyoxyethylene ether (m+n=5), pentylamine polyoxyethylene ether (m+n=8), pentylamine polyoxyethylene ether (m+n=10), pentylamine polyoxyethylene ether (m+n=15), pentylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=25), N-hexyldiethanolamine (m=1), hexylamine polyoxyethylene ether (m+n=5), hexylamine polyoxyethylene ether (m+n=8), hexylamine polyoxyethylene ether (m+n=10), hexylamine polyoxyethylene ether (m+n=15), hexylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=20) N-heptyldiethanolamine (m=1), heptylamine polyoxyethylene ether (m+n=5), heptylamine polyoxyethylene ether (m+n=8), heptylamine polyoxyethylene ether (m+n=10), heptylamine polyoxyethylene ether (m+n=15), heptylamine polyoxyethylene ether (m+n=20), heptylamine polyoxyethylene ether (m+n=25), N-octyldiethanolamine (m=n=1), octylamine polyoxyethylene ether (m+n=5), octylamine polyoxyethylene ether (m+n=8), octylamine polyoxyethylene ether (m+n=10), octylamine polyoxyethylene ether (m+n=15), octylamine polyoxyethylene ether (m+n=20), octylamine polyoxyethylene ether (m+n=25), N-nonylamine polyoxyethylene ether (m=n=1), nonylamine polyoxyethylene ether (m+n=5), nonylamine polyoxyethylene ether (m+n=10), nonylamine polyoxyethylene ether (m+n=15), nonylamine polyoxyethylene ether (m+n=20), nonylamine polyoxyethylene ether (m+n=n=5), nonylamine polyoxyethylene ether (m+n=n=25), decylamine polyoxyethylene ether (m+n=1), n=n=5), decyl amine polyoxyethylene ether (m+n=8), decyl amine polyoxyethylene ether (m+n=10), decyl amine polyoxyethylene ether (m+n=15), decyl amine polyoxyethylene ether (m+n=20), decyl amine polyoxyethylene ether (m+n=25), N-undecylenoyl diethanolamine (m+n=1), undecylenoyl polyoxyethylene ether (m+n=5), undecylenoyl polyoxyethylene ether (m+n=8), undecylenoyl polyoxyethylene ether (m+n=10), undecylenoyl polyoxyethylene ether (m+n=15), undecylenoyl polyoxyethylene ether (m+n=20), undecylenoyl polyoxyethylene ether (m+n=25), N-dodecyl diethanolamine (m=n=1), dodecyl polyoxyethylene ether (m+n=5), dodecyl polyoxyethylene ether (m+n=8), dodecyl polyoxyethylene ether (m+n=10), dodecyl polyoxyethylene ether (m+n=15), dodecyl polyoxyethylene ether (m+n=20), dodecyl polyoxyethylene ether (m+n=25), N-tridecyl diethanolamine (m=n=1), tridecyl polyoxyethylene ether (m+n=5), and tridecyl polyoxyethylene ether (m+n=8) Tridecyl polyoxyethylene ether (m+n=10), tridecyl polyoxyethylene ether (m+n=15), tridecyl polyoxyethylene ether (m+n=20), tridecyl polyoxyethylene ether (m+n=25), N-tetradecyl diethanolamine (m=n=1), tetradecyl polyoxyethylene ether (m+n=5), tetradecyl polyoxyethylene ether (m+n=8), tetradecyl polyoxyethylene ether (m+n=10), tetradecyl polyoxyethylene ether (m+n=15), tetradecyl polyoxyethylene ether (m+n=20), tetradecyl polyoxyethylene ether (m+n=25), N-pentadecyl diethanolamine (m=n=1), pentadecyl polyoxyethylene ether (m+n=5), pentadecyl polyoxyethylene ether (m+n=8), pentadecyl polyoxyethylene ether (m+n=10), pentadecyl polyoxyethylene ether (m+n=15), pentadecyl polyoxyethylene ether (m+n=20), N-hexadecyl diethanolamine (m=1), hexadecyl polyoxyethylene ether (m+n=5), hexadecyl polyoxyethylene ether (m+n=8), hexadecyl polyoxyethylene ether (m+n=10) At least one of hexadecylamine polyoxyethylene ether (m+n=15), hexadecylamine polyoxyethylene ether (m+n=20), hexadecylamine polyoxyethylene ether (m+n=25), N-heptadecylethanolamine (m=n=1), heptadecylamine polyoxyethylene ether (m+n=5), heptadecylamine polyoxyethylene ether (m+n=8), heptadecylamine polyoxyethylene ether (m+n=10), heptadecylamine polyoxyethylene ether (m+n=15), heptadecylamine polyoxyethylene ether (m+n=20), heptadecylamine polyoxyethylene ether (m+n=25), N-octadecyldiethanolamine (m=n=1), octadecylamine polyoxyethylene ether (m+n=2), octadecylamine polyoxyethylene ether (m+n=5), octadecylamine polyoxyethylene ether (m+n=8), octadecylamine polyoxyethylene ether (m+n=10), octadecylamine polyoxyethylene ether (m+n=15), octadecylamine polyoxyethylene ether (m+n=20), and octadecylamine polyoxyethylene ether (m+n=25). The preparation of the amino polyoxyethylene ether compound is to prepare fatty amine and ethylene oxide, and the obtained product obtains the value of m+n in the product through the measurement of the total amine value and the tertiary amine value.
According to some embodiments of the catalyst system of the present invention, in formula (II), R 1 "and R 2 "each independently selected from halogen, hydrogen atom, C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 A haloalkyl group of (2); r is R 3” Selected from C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 Is a haloalkyl group of (2).
According to some embodiments of the catalyst system of the present invention, R in formula (II) is selected for ease of availability and economy of starting materials in practical use 3” The groups can be a mixture of several alkyl groups in any proportion, or can be a mixture of compounds with different numbers of alkoxy groups (different values of n).
According to some embodiments of the catalyst system of the present invention, the siloxane-based compound is selected from the group consisting of trimethylmethoxysilane, diisopropyldimethoxysilane, diisobutyldimethoxysilane, isopropylisobutyldimethoxysilane, di-tert-butyldimethoxysilane, tert-butylmethyldimethoxysilane, tert-butylethyldimethoxysilane, tert-butylpropyldimethoxysilane, tert-butylisopropyldimethoxysilane, cyclohexylmethyldimethoxysilane, dicyclohexyldimethoxysilane, cyclohexyl-tert-butyldimethoxysilane, cyclopentylmethyldimethoxysilane, cyclopentyldimethoxysilane, dicyclopentyldimethoxysilane, cyclopentylcyclohexyldimethoxysilane, bis (2-methylcyclopentyl) dimethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, phenyltriethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, isopropyltrimethoxysilane, isopropyltriethoxysilane, butyltrimethoxysilane, butyltriethoxysilane, isobutyltrimethoxysilane, isopentyltrimethoxysilane, cyclopentyldimethoxysilane, triethoxysilane, dimethoxysilane, tetraphenylethoxysilane, tetraethoxysilane, and tetraethoxysilane.
According to some embodiments of the catalyst system of the present invention, the alkylamine polyoxyethylene ether compound of formula (I) may comprise 5 to 95 mole% of the external electron donor composition, for example, 10 mole%, 15 mole%, 20 mole%, 25 mole%, 30 mole%, 35 mole%, 40 mole%, 45 mole%, 50 mole%, 55 mole%, 60 mole%, 65 mole%, 70 mole%, 75 mole%, 80 mole%, 85 mole%, 90 mole%, and any value therebetween. Preferably 5 to 60 mol%, more preferably 10 to 40 mol%.
According to some embodiments of the catalyst system of the present invention, the internal electron donor compound is selected from at least one of phthalate compounds, glycol esters compounds, cyano succinates compounds, diethers compounds and succinates compounds; preferably at least one selected from the group consisting of glycol ester compounds, cyano succinic acid ester compounds, diether compounds and succinic acid ester compounds.
According to some embodiments of the catalyst system of the present invention, the phthalate compound is exemplified by, but not limited to, phthalate compounds selected from the group consisting of those represented by formula (IV),
Figure BDA0003324641160000131
In the formula (IV), R 15 And R is 16 Identical or different, each independently selected from C 1 -C 20 Straight-chain alkane, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Alkylaryl or C of (C) 7 -C 20 The hydrogen atom on the carbon in the alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl group may be optionally substituted with a heteroatom, alkyl or alkoxy group and the carbon atom on the alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl backbone may be optionally substituted with a heteroatom. Preferably, R 15 And R is 16 Each independently selected from C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl or C of (C) 6 -C 10 Aryl of (a); more preferably, R 15 And R is 16 Each independently selected from C 1 -C 6 Straight-chain alkyl or C 1 -C 6 Branched alkyl of (a); further preferably, R 15 And R is 16 Each independently selected from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, or phenyl.
According to some embodiments of the catalyst system of the present invention, examples of phthalate compounds represented by formula (IV) include, but are not limited to: dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, di (1-methyl) propyl phthalate, di-t-butyl phthalate, di-n-pentyl phthalate, di (1-methyl) butyl phthalate, di (2-methyl) butyl phthalate, diisopentyl phthalate, di (1, 1' -dimethyl) propyl phthalate, dipentyl phthalate, di (1, 2-dimethyl) propyl phthalate, n-hexyl phthalate, di (1-methyl) pentyl phthalate, di (2-methyl) pentyl phthalate, di (3-methyl) pentyl phthalate, diisohexyl phthalate, di (1, 1' -dimethyl) butyl phthalate, di (2, 2' -dimethyl) butyl phthalate, di (1, 2-dimethyl) butyl phthalate, di (2, 3-dimethyl) butyl phthalate, di (1, 1' -dimethyl) butyl phthalate; 2-trimethyl) propyl phthalate, di (1, 2' -trimethyl) propyl phthalate, n-heptyl phthalate, di (1-methyl) hexyl phthalate, di (2-methyl) hexyl phthalate, di (3-methyl) hexyl phthalate, di (4-methyl) hexyl phthalate, diisoheptyl phthalate, di (1, 1' -dimethyl) pentyl phthalate, di (2, 2' -dimethyl) pentyl phthalate, di (3, 3' -dimethyl) pentyl phthalate, dithienyl phthalate, di (1, 2-dimethyl) pentyl phthalate, di (1, 3-dimethyl) pentyl phthalate, di (1, 4-dimethyl) pentyl phthalate, di (2, 3-dimethyl) pentyl phthalate, di (2, 4-dimethyl) pentyl phthalate, di (3, 4-dimethyl) pentyl phthalate, di (1, 1', 2-trimethyl) butyl phthalate, di (1, 1', 3-trimethyl) butyl phthalate, di (1, 2' -trimethyl) butyl phthalate, di (2, 2', 3-trimethyl) butyl phthalate, di (1, 3' -trimethyl) butyl phthalate, di (2, 3' -trimethyl) butyl phthalate, di (1, 1', 2' -tetramethyl) propyl phthalate, n-octyl phthalate, di (1-methyl) heptyl phthalate, di (2-methyl) heptyl phthalate, di (3-methyl) heptyl phthalate, di (4-methyl) heptyl phthalate, and, di (5-methyl) heptyl phthalate, diisooctyl phthalate, di (1, 1' -dimethyl) hexyl phthalate, di (2, 2' -dimethyl) hexyl phthalate, di (3, 3' -dimethyl) hexyl phthalate, di (4, 4' -dimethyl) hexyl phthalate, di (5, 5' -dimethyl) hexyl phthalate, di (1, 2-dimethyl) hexyl phthalate, di (1, 3-dimethyl) hexyl phthalate, di (1, 4-dimethyl) hexyl phthalate, di (1, 5-dimethyl) hexyl phthalate, di (2, 3-dimethyl) hexyl phthalate, di (2, 4-dimethyl) hexyl phthalate, di (2, 5-dimethyl) hexyl phthalate, di (3, 4-dimethyl) hexyl phthalate, di (3, 5-dimethyl) hexyl phthalate, di (4, 5-dimethyl) hexyl phthalate, di (1, 1 '; 2-trimethyl) pentyl ester, di (1, 1', 3-trimethyl) pentyl phthalate, di (1, 1', 4-trimethyl) pentyl phthalate, di (1, 2' -trimethyl) pentyl phthalate, di (2, 2', 3-trimethyl) pentyl phthalate, di (2, 2', 4-trimethyl) pentyl phthalate, bis (1, 3 '-trimethyl) pentyl phthalate, bis (2, 3' -trimethyl) pentyl phthalate, bis (3, 3', 4-trimethyl) pentyl ester, di (1, 4' -trimethyl) pentyl ester of phthalic acid, di (2, 4 '-trimethyl) pentyl ester of phthalic acid, di (3, 4' -trimethyl) pentyl ester of phthalic acid, di (1, 1', 2' -tetramethyl) butyl ester of phthalic acid, di (1, 1',3,3' -tetramethyl) butyl phthalate, di (2, 2', 3' -tetramethyl) butyl phthalate, diphenyl phthalate, di (o-methyl) phenyl phthalate, di (p-methyl) phenyl phthalate, di (m-methyl) phenyl phthalate, di (o-methoxy) phenyl phthalate, di (p-methoxy) phenyl phthalate, di (m-methoxy) phenyl phthalate; preferably selected from the group consisting of dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, di-t-butyl phthalate, di-n-pentyl phthalate, diisopentyl phthalate, n-hexyl phthalate, diisohexyl phthalate, n-heptyl phthalate, isoheptyl phthalate, n-octyl phthalate, isooctyl phthalate, diphenyl phthalate, di (methyl) phenyl phthalate, di (p-methyl) phenyl phthalate, di (m-methyl) phenyl phthalate, di (o-methoxy) phenyl phthalate, di (p-methoxy) phenyl phthalate; more preferably selected from the group consisting of dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, di-t-butyl phthalate, di-n-pentyl phthalate, diisopentyl phthalate, n-hexyl phthalate, isohexyl phthalate, diphenyl phthalate, di (methyl) phenyl phthalate, di (p-methyl) phenyl phthalate, di (methoxy) phenyl phthalate, di (p-methoxy) phenyl phthalate.
According to some embodiments of the catalyst system of the present invention, the glycol ester compound includes, but is not limited to, a glycol ester compound selected from the group consisting of those represented by formula (V),
Figure BDA0003324641160000151
in the formula (V), R 17 And R is 18 Identical or different, each independently of the other is a substituted or unsubstituted C 1 -C 20 Straight-chain alkane, substituted or unsubstituted C 3 -C 20 Branched alkyl, substituted or unsubstituted C 3 -C 20 Cycloalkyl, substituted or unsubstituted C 6 -C 20 Aryl, substituted or unsubstituted C 7 -C 20 Alkylaryl, substituted or unsubstituted C 7 -C 20 Aralkyl, substituted or unsubstituted C 2 To C 10 Or substituted or unsubstituted C 10 -C 20 Condensed ring aryl of (a); r is R 19 -R 24 Identical or different, each independently of the others hydrogen, halogen, substituted or unsubstituted straight-chain C 1 -C 20 Straight-chain alkyl, substituted or unsubstituted C 3 -C 20 Branched alkyl, substituted or unsubstituted C 3 -C 20 Cycloalkyl, substituted or unsubstituted C 6 -C 20 Aryl, substituted or unsubstituted C 7 -C 20 Is an alkane of (2)Aryl, substituted or unsubstituted C 7 -C 20 Aralkyl, substituted or unsubstituted C 2 -C 10 Or substituted or unsubstituted C 10 -C 20 Condensed ring aryl of (a); or R is 19 -R 22 At least one of which is together with R 23 -R 24 Is formed into a ring.
According to some embodiments of the catalyst system of the present invention, examples of the glycol ester compound represented by formula (V) include, but are not limited to: at least one of 2-ethyl-1, 3-propanediol dibenzoate, 2-propyl-1, 3-propanediol dibenzoate, 2-isopropyl-2-isopentyl-1, 3-propanediol dibenzoate, 1, 3-butanediol dimethylbenzoate, 2-methyl-1, 3-butanediol diisochlorobenzoate, 2, 3-dimethyl-1, 3-butanediol dibenzoate, 1, 3-pentanediol pivalate, 2, 4-pentanediol dibenzoate, 2-methyl-1, 3-pentanediol benzoic acid cinnamate, 2-dimethyl-1, 3-pentanediol dibenzoate, 2, 4-heptanediol dibenzoate, 3, 5-heptanediol dibenzoate, 4-ethyl-3, 5-heptanediol dibenzoate, and 2-methyl-3, 5-heptanediol dibenzoate; preferably at least one of 3, 5-heptanediol dibenzoate, 4-ethyl-3, 5-heptanediol dibenzoate and 2, 4-pentanediol dibenzoate; more preferably 3, 5-heptanediol dibenzoate.
According to some embodiments of the catalyst system of the present invention, the cyano succinate compound includes, but is not limited to, a compound selected from the group consisting of cyano succinate compounds represented by formula (VI),
Figure BDA0003324641160000161
in the formula (VI), R 25 And R is 26 Identical or different, each independently selected from hydrogen, C 1 -C 14 Straight chain alkyl, C 3 -C 14 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C of (2) 7 -C 10 Alkylaryl or C of (C) 7 -C 10 Aralkyl of (a); r is R 27 And R is 28 Identical or different, each independently selected from C 1 -C 10 Straight chain alkyl, C 1 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C of (2) 7 -C 20 Alkylaryl or C of (C) 7 -C 20 An aralkyl group of (a).
Examples of the cyano succinic acid ester compounds of formula (VI) according to some embodiments of the catalyst system of the present invention include, but are not limited to: 2, 3-Diisopropyl-2-cyanosuccinic acid dimethyl ester, 2, 3-Diisopropyl-2-cyanosuccinic acid diethyl ester, 2, 3-Diisopropyl-2-cyanosuccinic acid di-n-propyl ester, 2, 3-Diisopropyl-2-cyanosuccinic acid diisopropyl ester, 2, 3-Din-butyl-2, 3-Diisopropyl-2-cyanosuccinic acid diisobutyl ester, 2, 3-Diisopropyl-2-cyanosuccinic acid-1-methyl-4-ethyl ester (R) 25 Methyl, R 26 =ethyl), 2, 3-diisopropyl-2-cyano-butanedioic acid-1-ethyl-4-methyl ester (R 25 =ethyl, R 26 =methyl), 2, 3-diisopropyl-2-cyano-butanedioic acid-1-n-butyl-4-ethyl ester (R 25 N-butyl, R 26 =ethyl), 2, 3-diisopropyl-2-cyano-butanedioic acid 1-ethyl-4-n-butyl ester (R 25 =ethyl, R 26 =n-butyl), 2, 3-diisobutyl-2-cyanobuty-anedioic acid dimethyl ester, 2, 3-diisobutyl-2-cyanobuty-anedioic acid diethyl ester, 2, 3-diisobutyl-2-cyanobuty-anedioic acid di-n-propyl ester, 2, 3-diisobutyl-2-cyanobuty-anedioic acid di-n-butyl ester, 2, 3-diisobutyl-2-cyanobuty-anedioic acid diisobutyl ester, 2, 3-diisobutyl-2-cyanobuty-1-methyl-4-ethyl ester (R) 25 Methyl, R 26 =ethyl), 2, 3-diisobutyl-2-cyano-succinic acid-1-ethyl-4-methyl ester (R 25 =ethyl, R 26 =methyl), 2, 3-diisobutyl-2-cyanobutanedioic acid-1-n-butyl-4-ethyl ester (R 25 N-butyl, R 26 =ethyl), 2, 3-diisobutyl-2-cyano-butanedioic acid-1-ethyl-4-n-butyl ester (R 25 =ethyl, R 26 =n-butyl), 2, 3-di-sec-butyl-2-cyano-butanedioic acid dimethyl ester, 2, 3-di-sec-butyl-2-cyano-butanedioic acid diethyl ester, 2, 3-di-sec-butyl-2-cyano-Di-n-propyl succinate, di-isopropyl 2, 3-di-sec-butyl-2-cyano succinate, di-n-butyl 2, 3-di-sec-butyl-2-cyano succinate, di-isobutyl 2, 3-di-sec-butyl-2-cyano succinate, 2, 3-di-sec-butyl-2-cyano succinic acid-1-methyl-4-ethyl ester (R) 25 Methyl, R 26 =ethyl), 2, 3-di-sec-butyl-2-cyano succinic acid-1-ethyl-4-methyl ester (R 25 =ethyl, R 26 Methyl), 2, 3-di-sec-butyl-2-cyano-butanedioic acid-1-n-butyl-4-ethyl ester (R 25 N-butyl, R 26 =ethyl), 2, 3-di-sec-butyl-2-cyano succinic acid-1-ethyl-4-n-butyl ester (R 25 =ethyl, R 26 =n-butyl), dimethyl 2, 3-dicyclopentyl-2-cyanobutyrate, diethyl 2, 3-dicyclopentyl-2-cyanobutyrate, di-n-propyl 2, 3-dicyclopentyl-2-cyanobutyrate, diisopropyl 2, 3-dicyclopentyl-2-cyanobutyrate, di-n-butyl 2, 3-dicyclopentyl-2-cyanobutyrate, diisobutyl 2, 3-dicyclopentyl-2-cyanobutyrate, 1-methyl 2-cyanobutyrate-4-ethyl ester (R) 25 Methyl, R 26 =ethyl), 2, 3-dicyclopentyl-2-cyanosuccinic acid-1-ethyl-4-methyl ester (R 25 =ethyl, R 26 =methyl), 2, 3-dicyclopentyl-2-cyanobuccinic acid-1-n-butyl-4-ethyl ester (R 25 N-butyl, R 26 =ethyl), 2, 3-dicyclopentyl-2-cyanosuccinic acid-1-ethyl-4-n-butyl ester (R 25 =ethyl, R 26 =n-butyl), dimethyl 2, 3-dicyclohexyl-2-cyanobutyrate, diethyl 2, 3-dicyclohexyl-2-cyanobutyrate, di-n-propyl 2, 3-dicyclohexyl-2-cyanobutyrate, di-isopropyl 2, 3-dicyclohexyl-2-cyanobutyrate, di-n-butyl 2, 3-dicyclohexyl-2-cyanobutyrate, di-isobutyl 2, 3-dicyclohexyl-2-cyanobutyrate, 1-methyl-4-ethyl 2, 3-dicyclohexyl-2-cyanobutyrate (R) 25 Methyl, R 26 =ethyl), 2, 3-dicyclohexyl-2-cyanobuccinic acid-1-ethyl-4-methyl ester (R 25 =ethyl, R 26 =methyl), 2, 3-dicyclohexyl-2-cyanobuccinic acid-1-n-butyl-4-ethyl ester (R 25 N-butyl, R 26 =ethyl), 2, 3-dicyclohexyl-2-cyanobuccinic acid-1-ethyl-4-n-butyl ester (R 25 =ethyl, R 26 =n-butylA base); preferably diethyl 2, 3-diisopropyl-2-cyanobuccinate, di-n-propyl 2, 3-diisopropyl-2-cyanobuccinate, di-isopropyl 2, 3-diisopropyl-2-cyanobuccinate, di-n-butyl 2, 3-diisopropyl-2-cyanobuccinate, diisobutyl 2, 3-diisopropyl-2-cyanobuccinate; more preferably diethyl 2, 3-diisopropyl-2-cyano succinate.
According to some embodiments of the catalyst system of the present invention, the diether compound includes, but is not limited to, a diether compound selected from the group consisting of those represented by formula (VII),
Figure BDA0003324641160000171
in the formula (VII), R 29 And R is 30 Identical or different, each independently selected from C 1 -C 10 Straight chain or C of (2) 3 -C 10 Branched alkyl of (a); r is R 32 And R is 33 Identical or different, each independently selected from C 1 -C 20 Straight chain of C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Substituted or unsubstituted aryl or C 7 -C 20 Alkylaryl groups of (a); r is R 31 And R is 34 The same or different are each independently selected from hydrogen, C 1 -C 10 Straight-chain alkyl or C 3 -C 10 Branched alkyl groups of (a).
According to some embodiments of the catalyst system of the present invention, examples of the diether compounds represented by formula (VII) include, but are not limited to: 2-isopropyl-2-isopentyl-1, 3-dimethoxypropane, 9-bis (methoxymethyl) fluorene, 2-isobutyl-2-isopropyl-1, 3-dimethoxypropane, 2-dicyclopentyl dimethoxypropane, 2-diphenyl-1, 3-dimethoxypropane, 2-isobutyl-2-isopropyl-1, 3-dimethoxypropane, 2-dicyclopentyl-1, 3-dimethoxypropane, 2-diisobutyl-1, 3-dimethoxypropane, 2-isopropyl-2-isopentyl-1, 3-dimethoxypropane, 9-bis (methoxymethyl) fluorene are preferred.
According to some embodiments of the catalyst system of the present invention, the succinate compound includes, but is not limited to, a succinate compound selected from the group consisting of those represented by formula (VIII),
Figure BDA0003324641160000181
in the formula (VIII), R 35 And R is 36 Identical or different, each independently selected from C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 2 -C 20 Alkenyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7-20 Aralkyl or C of (C) 7 -C 20 Alkylaryl groups of (a); r is R 37 -R 40 Are identical or different from each other and are each independently selected from hydrogen, C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 2 -C 20 Alkenyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Aralkyl or C of (C) 7 -C 20 Alkylaryl groups of (a); the R is 35 And R is 36 Optionally containing heteroatoms.
Examples of succinate compounds of formula (VIII) according to some embodiments of the catalyst system of the present invention include, but are not limited to: diethyl 2, 3-bis (2-ethylbutyl) succinate, diethyl 2, 3-diethyl-2-isopropyl succinate, diethyl 2, 3-diisopropyl succinate, diethyl 2, 3-di-tert-butylsuccinate, diethyl 2, 3-diisobutylsuccinate, diethyl 2,3- (bistrimethylsilyl) succinate, diethyl 2- (, 3-trifluoropropyl) -3-methylsuccinate, diethyl 2, 3-dineopentylsuccinate, diethyl 2, 3-diisopentylsuccinate, diethyl 2,3- (1-trifluoromethyl-ethyl) succinate, diethyl 2-isopropyl-3-isobutylsuccinate, diethyl 2-tert-butyl-3-isopropyl succinate diethyl 2-isopropyl-3-cyclohexylsuccinate, diethyl 2-isopentyl-3-cyclohexylsuccinate, diethyl 2, 3-methylsuccinate diethyl 2, 3-tetraethyl succinate, diethyl 2, 3-tetrapropyl succinate, diethyl 2, 3-diethyl-2, 3-diisopropyldisuccinate diisobutyl 2, 3-bis (2-ethylbutyl) succinate, diisobutyl 2, 3-diethyl-2-isopropylsuccinate, diisobutyl 2, 3-diisopropylsuccinate, diisobutyl 2, 3-di-tert-butylsuccinate, diisobutyl 2, 3-diisobutylsuccinate, diisobutyl 2,3- (bistrimethylsilyl) succinate, diisobutyl 2- (, 3-trifluoropropyl) -3-methylsuccinate, diisobutyl 2, 3-dineopentylsuccinate, diisobutyl 2, 3-diisoamyl succinate, diisobutyl 2,3- (1-trifluoromethyl-ethyl) succinate, diisobutyl 2-isopropyl-3-isobutylsuccinate, diisobutyl 2-tert-butyl-3-isopropylsuccinate diisobutyl 2-isopropyl-3-cyclohexylsuccinate, diisobutyl 2-isopentyl-3-cyclohexylsuccinate, diisobutyl 2, 3-methylsuccinate diisobutyl 2, 3-tetraethyl succinate, diisobutyl 2, 3-tetrapropyl succinate, diisobutyl 2, 3-diethyl-2, 3-diisopropyldisuccinate; preferably diethyl 2, 3-diisopropylsuccinate, diethyl 2, 3-di-tert-butylsuccinate, diethyl 2, 3-diisobutylsuccinate, diisobutyl 2, 3-diisopropylsuccinate; 2, 3-diisopropylsuccinate.
According to the present invention, in the catalyst solid component B, the compound of the internal electron donor may be used alone or two or more internal electron donor compounds may be used in combination.
According to some embodiments of the catalyst system of the present invention, the method for preparing the catalyst solid component B comprises: the magnesium compound, titanium compound, halogen and internal electron donor compound are contacted and reacted. The amounts of the titanium compound, the magnesium compound and the internal electron donor used for preparing the solid component of the catalyst are not particularly limited, and may be conventional in the art and the amount, respectively.
According to some embodiments of the catalyst system of the present invention, in the solid catalyst component B, magnesium is in terms of magnesium atoms, titanium is in terms of titanium atoms, halogen is in terms of halogen atoms, the content of titanium atoms being from 1.0 to 8.0% by weight, preferably from 1.6 to 6.0% by weight; the content of magnesium atoms is 10 to 70 wt%, preferably 15 to 40 wt%; the halogen atom content is 20 to 90 wt%, preferably 30 to 85 wt%; the content of the internal electron donor compound is 2 to 30% by weight, preferably 3 to 20% by weight.
According to some embodiments of the catalyst system of the present invention, the magnesium compound may be at least one of a magnesium compound represented by formula (III), a hydrate of the magnesium compound represented by formula (III), and an alcohol adduct of the magnesium compound represented by formula (III),
MgR 11 R 12 (III)
In the formula (III), R 11 And R is 12 The same or different, each independently selected from halogen, C 1 -C 8 Straight-chain alkoxy, C 3 -C 8 Branched alkoxy, C 1 -C 8 Straight-chain alkyl or C 3 -C 8 Branched alkyl groups of (a).
According to some embodiments of the catalyst system of the present invention, the hydrate of the magnesium compound represented by formula (III) refers to MgR 11 R 12 ·pH 2 O, wherein p is in the range of 0.1 to 6, preferably 2 to 3.5. In the present invention, the alcohol adduct means MgR 11 R 12 ·qR 13 OH, wherein R is 13 Selected from C 1 -C 18 Preferably C 1 -C 8 More preferably methyl, ethyl, n-propyl or isopropyl; q is in the range of 0.1 to 6, preferably 2 to 3.5.
According to some embodiments of the catalyst system of the present invention, the magnesium compound may be, in a preferred case, at least one of dimethoxymagnesium, diethoxymagnesium, dipropoxymagnesium, diisopropylmagnesium, dibutoxymagnesium, diisobutoxymagnesium, dipentoxymagnesium, diperoxylmagnesium, di (2-ethyl) hexyloxymagnesium, methoxymagnesium chloride, methoxymagnesium bromide, methoxymagnesium iodide, ethoxymagnesium chloride, ethoxymagnesium bromide, ethoxymagnesium iodide, propoxymagnesium chloride, propoxymagnesium bromide, propoxymagnesium iodide, butoxymagnesium chloride, butoxymagnesium bromide, butoxymagnesium iodide, methylmagnesium chloride, ethylmagnesium chloride, propylmagnesium chloride, butylmagnesium chloride, pentylmagnesium chloride, phenylmagnesium chloride, magnesium dichloride, magnesium dibromide, magnesium diiodide, an alcohol adduct of magnesium dibromide, and an alcohol adduct of magnesium diiodide. Most preferably, the magnesium compound contains at least one of diethoxy magnesium, butyl magnesium chloride, ethoxy magnesium chloride, and magnesium dichloride.
According to some embodiments of the catalyst system of the present invention, the titanium compound is a compound of formula (III'),
TiX m (OR 14 ) 4-m (III’)
in the formula (III'), X is halogen, R 14 Selected from C 1 -C 20 M is an integer of 0 to 4. The halogen may be chlorine, bromine or iodine.
According to some embodiments of the catalyst system of the present invention, in the preferred case, in formula (III'), X is halogen, R 14 Selected from C 1 -C 5 For example: at least one of titanium tetrachloride, titanium tetrabromide, titanium tetraiodide, titanium tetrabutoxide, titanium tetraethoxide, titanium monochlorotriethoxide, titanium dichlorodiethoxide and titanium trichloromonoethoxide. Most preferably, the titanium compound is titanium tetrachloride.
In the present invention, the catalyst solid component B can be carried out by a method for producing an olefin catalyst component which is conventional in the art. The catalyst solid component of the present invention can be prepared, for example, by the following method.
In the first method, an alkoxy magnesium or an alkoxy magnesium halide is suspended in an inert diluent to form a suspension, and the suspension is mixed and contacted with the titanium compound and the internal electron donor to obtain a solid dispersion system, which is commonly called a mother solution. Filtering mother liquor, and suspending the obtained solid matters in a solution containing titanium tetrachloride for contact treatment, which is commonly called titanium treatment; and then filtering and washing to obtain the catalyst solid component.
Specific examples of the above-mentioned alkoxymagnesium in the above-mentioned method one include dimethoxymagnesium, diethoxymagnesium, dipropoxymagnesium, diisopropylmagnesium, dibutoxymagnesium, diisobutoxymagnesium, dipentoxymagnesium, dihexyloxymagnesium, di (2-ethyl) hexyloxymagnesium and the like or a mixture thereof, and preferably diethoxymagnesium or a mixture of diethoxymagnesium and other alkoxymagnesium. The preparation of the magnesium alkoxide compound may be carried out by methods known in the art, such as disclosed in patent CN101906017a by reacting magnesium metal with a fatty alcohol in the presence of a small amount of iodine.
Specific examples of the alkoxymagnesium halide in the above method one include methoxymagnesium chloride, ethoxymagnesium chloride, propoxymagnesium chloride, butoxymagnesium chloride and the like, and ethoxymagnesium chloride is preferable. The alkoxy magnesium halide compound can be prepared by methods well known in the art, such as mixing the grignard reagent butyl magnesium chloride with tetraethoxytitanium and tetraethoxysilicon to prepare magnesium ethoxychloride.
The inert diluent used in the formation of the mother liquor in the above process one may be at least one of hexane, heptane, octane, decane, benzene, toluene and xylene.
The amount of each component used for forming the mother liquor in the above-mentioned method one is 0.5 to 100 moles, preferably 1 to 50 moles, per mole of magnesium; the inert diluent is used in an amount of usually 0.5 to 100 moles, preferably 1 to 50 moles; the total amount of the internal electron donor compound is usually 0.005 to 10 moles, preferably 0.01 to 1 mole.
The contacting temperature of the components at the formation of the mother liquor in the above process one is generally from-40 to 200 ℃, preferably from-20 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 8 hours.
During the titanium treatment as described in the above method one, an inert diluent such as at least one of hexane, heptane, octane, decane, benzene, toluene and xylene may be optionally added to the titanium tetrachloride-containing solution used.
In the titanium treatment process in the above-mentioned method one, the amount of each component in the titanium tetrachloride-containing solution to be used is 0.5 to 100 moles, preferably 1 to 50 moles, per mole of magnesium; the inert diluent is used in an amount of usually 0 to 100 mol, preferably 0 to 50 mol.
In the above method one, the number of titanium treatments is 0 to 10, preferably 1 to 5.
The electron donor compound described above may be optionally added during the titanium treatment in the above-mentioned method one, wherein the internal electron donor is used in an amount of usually 0.005 to 10 moles, preferably 0.01 to 1 mole.
In the above-mentioned method one, the titanium treatment temperature is usually 0 to 200 ℃, preferably 30 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 6 hours.
Dissolving magnesium dihalide in a solvent system consisting of an organic epoxy compound, an organic phosphorus compound, a fatty alcohol compound and an inert diluent to form a uniform solution, and then carrying out contact reaction with the titanium compound and an electron donor compound to precipitate solids in the presence of a precipitation aid to form a mother solution; filtering the mother liquor, and suspending the obtained solid matters in a solution containing titanium tetrachloride for contact treatment, which is hereinafter generally referred to as titanium treatment; and then filtering and washing to obtain the catalyst solid component.
The precipitation aid used in the second method is not particularly limited as long as solid particles can be precipitated and molded. Examples which may be mentioned are: at least one of an organic acid anhydride, an organic acid, an ester, an ether, and a ketone. Specific examples of the organic acid anhydride may be at least one of acetic anhydride, phthalic anhydride, succinic anhydride, maleic anhydride, etc., specific examples of the organic acid may be at least one of acetic acid, propionic acid, butyric acid, acrylic acid, methacrylic acid, etc., specific examples of the ester may be at least one of dibutyl phthalate, 2, 4-pentanediol dibenzoate, 3-ethyl-2, 4-pentanediol dibenzoate, 2, 3-diisopropyl-1, 4-butanediol dibenzoate, 3, 5-heptanediol dibenzoate, and 4-ethyl-3, 5-heptanediol dibenzoate, specific examples of the ether may be at least one of methyl ether, diethyl ether, propyl ether, butyl ether, amyl ether, 2-isopropyl-2-isopentyl dimethoxypropane, and 9,9- (dimethoxymethyl) fluorene, and the ketone may be at least one of acetone, methyl ethyl ketone, and benzophenone.
The organic epoxy compound used in the above-mentioned method two may be at least one selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, butadiene double oxide, epichlorohydrin, methyl glycidyl ether, diglycidyl ether and the like, and preferably epichlorohydrin.
The organic phosphorus compound used in the above-mentioned method II may be a hydrocarbon-based ester or halogenated hydrocarbon-based ester of orthophosphoric acid or phosphorous acid, and specific examples of the organic phosphorus compound may be given as follows: trimethyl orthophosphate, triethyl orthophosphate, tributyl orthophosphate, triphenyl orthophosphate, trimethyl phosphite, triethyl phosphite, tributyl phosphite or benzyl phosphite, etc., preferably tributyl orthophosphate.
The fatty alcohol compound used in the second method may be C 1 -C 20 Linear or branched alkanes, mono-or polyhydric aliphatic alcohols, preferably C 1 -C 10 Specific examples of the linear or branched monohydric aliphatic alcohol(s) include: methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, hexanol, heptanol, (2-ethyl) hexyl alcohol, octanol, nonanol, decanol, and the like, with (2-ethyl) hexyl alcohol being preferred.
The inert diluent used in the mother liquor formation in the above process II may be at least one of hexane, heptane, octane, decane, benzene, toluene and xylene.
The amount of each component used in the formation of the mother liquor in the above-mentioned method II may be 0.2 to 10 moles, preferably 0.5 to 4 moles, per mole of magnesium halide; the organophosphorus compound may be 0.1 to 3 moles, preferably 0.3 to 1.5 moles; the fatty alcohol compound may be 0.2 to 10 moles, preferably 0.5 to 3 moles; the titanium compound may be present in an amount of 0.5 to 20 moles, preferably 5 to 15 moles; the precipitation aid component may be present in an amount of 0.01 to 0.3 mole, preferably 0.02 to 0.2 mole; the total amount of the internal electron donor compound may be 0 to 10 moles, preferably 0.02 to 0.3 moles.
The contacting temperature of the components at the formation of the mother liquor in the above process two is generally from-40 to 200 ℃, preferably from-20 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 8 hours.
In the titanium treatment process described in the above method II, an inert diluent such as at least one of hexane, heptane, octane, decane, benzene, toluene and xylene may be optionally added to the titanium tetrachloride-containing solution used.
In the titanium treatment process in the above-mentioned method II, the amount of each component in the titanium tetrachloride-containing solution to be used is 0.5 to 100 moles, preferably 1 to 50 moles, per mole of magnesium; the inert diluent is used in an amount of usually 0 to 100 mol, preferably 0 to 50 mol.
In the above method II, the number of titanium treatments is 0 to 10, preferably 1 to 5.
The electron donor compound described above may be optionally added during the titanium treatment in the above-mentioned method II, wherein the internal electron donor is used in an amount of usually 0.005 to 10 moles, preferably 0.01 to 1 mole.
In the above-mentioned method II, the titanium treatment temperature is usually 0 to 200 ℃, preferably 30 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 6 hours.
In a third method, the alcohol adduct of magnesium dihalide is suspended in an inert diluent to form a suspension, and the suspension is mixed with the above-mentioned titanium compound and internal electron donor to obtain a solid dispersion system, which is hereinafter referred to as a mother liquid. Filtering the mother liquor, and suspending the obtained solid matters in a solution containing titanium tetrachloride for contact treatment, which is hereinafter generally referred to as titanium treatment; and then filtering and washing to obtain the catalyst solid component.
The alcohol adduct of magnesium dihalide in the above-mentioned method three can be produced by the following method: mixing an alcohol (such as methanol, ethanol, propanol or isopropanol, etc.) with magnesium halide in the presence of an inert solvent (such as hexane, heptane, octane, decane, benzene, toluene, xylene, etc.) which is not miscible with the adduct to form an emulsion, and rapidly quenching and dispersing the emulsion to obtain spherical particles, namely the alcohol adduct of magnesium dihalide.
The inert diluent used in the formation of the mother liquor in the above process three may be at least one of hexane, heptane, octane, decane, benzene, toluene and xylene.
The amount of each component used for forming the mother liquor in the above-mentioned method III is 0.5 to 100 moles, preferably 1 to 50 moles, per mole of magnesium; the inert diluent is used in an amount of usually 0.5 to 100 moles, preferably 1 to 50 moles; the total amount of the electron donor compound is usually 0.005 to 10 moles, preferably 0.01 to 1 mole.
The contacting temperature of the components at the formation of the mother liquor in the above process three is generally from-40 to 200 ℃, preferably from-20 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 8 hours.
During the titanium treatment described in the above method III, an inert diluent such as at least one of hexane, heptane, octane, decane, benzene, toluene and xylene may be optionally added to the titanium tetrachloride-containing solution used.
In the titanium treatment in the above-mentioned method III, the amount of each component in the titanium tetrachloride-containing solution to be used is 0.5 to 100 moles, preferably 1 to 50 moles, per mole of magnesium; the inert diluent is used in an amount of usually 0 to 100 mol, preferably 0 to 50 mol.
In the above method three, the number of titanium treatments is 0 to 10, preferably 1 to 5.
The above electron donor compound (ID) may be optionally added during the titanium treatment in the above method III, wherein the internal electron donor is used in an amount of usually 0.005 to 10 mol, preferably 0.01 to 1 mol.
In the above method three, the titanium treatment temperature is usually 0 to 200 ℃, preferably 30 to 150 ℃; the contact time is usually 1 minute to 20 hours, preferably 5 minutes to 6 hours.
According to some embodiments of the invention, the molar ratio of the alkyl aluminum compound to titanium in the catalyst system, calculated as aluminum, is from 5 to 5000:1; preferably 20-1000:1; more preferably 50-500:1.
According to some embodiments of the invention, the molar ratio of the alkyl aluminium compound C to the external electron donor a, calculated as aluminium, is from 0.5-1 to 50:1, preferably from 1-30:1, more preferably from 1-20:1.
In a fourth aspect, the present invention provides a process for the polymerization of olefins comprising contacting one or more olefins with the catalyst system described above to obtain a polymer, wherein at least one of the olefins is of the formula CH 2 Olefins represented by =chr, wherein R is selected from hydrogen or C 1 -C 6 Is a hydrocarbon group.
The olefin polymerization method of the present invention can be used for homo-polymerization of olefins, and can also be used for copolymerizing a plurality of olefins.
According to some embodiments of the process for the polymerization of olefins according to the invention, the olefin is preferably at least one selected from ethylene, propylene, 1-n-butene, 1-n-pentene, 1-n-hexene, 1-n-octene and 4-methyl-1-pentene; more preferably at least one selected from ethylene, propylene and 1-butene.
According to some embodiments of the olefin polymerization process of the present invention, the olefin polymerization conditions comprise: the temperature of the olefin polymerization is 0 to 150 ℃, preferably 60 to 130 ℃; the time is 0.1-5 hours, preferably 0.5-4 hours, and the pressure is 0.01-10MPa, preferably 0.5-5MPa. The amount of catalyst may be any of the various catalysts of the prior art.
The invention has the beneficial effects that:
the novel external electron donor composition can obtain the catalyst with excellent comprehensive performance, and has high polymerization activity, good hydrogen regulation sensitivity and higher stereospecificity when being used for propylene polymerization. Meanwhile, the high-temperature self-deactivation performance is achieved.
Detailed Description
In order that the invention may be more readily understood, the invention will be described in detail below with reference to the following examples, which are given by way of illustration only and are not limiting of the scope of application of the invention.
The test method and the equipment used in the test are as follows:
1. Titanium content in the catalyst: according to 721 spectrophotometer testing.
2. Magnesium content in the catalyst: titration was used.
3. Determination of the Melt Index (MI) of the Polymer: measured according to GB/T3682-2000.
4. The isotacticity of the polymer was determined using heptane extraction: after 2 g of the dried polymer sample was extracted with boiling heptane in an extractor for 6 hours, the ratio of the polymer weight (g) obtained by drying the residue to constant weight to 2 (g) was isotacticity (II), isotacticity (%) = polymer mass after extraction/2×100.
5. Malvern Mastersizer TM 2000 the particle size and particle size distribution (wherein span= (D90-D10)/D50) of the magnesium alkoxide and the catalyst were measured by a n-hexane dispersant laser diffraction method.
6. The internal electron donor content in the olefin polymerization catalyst component was determined using Waters 600E liquid chromatography or Agilent 7890 gas chromatography.
7. Polymerization activity (Ac) =polymer PP weight (kgPP)/solid catalyst component weight (gcat).
8. N-dodecyl diethanolamine is commercially available from carbofuran chemical company, m=n=1.
9. Dodecyl amine polyoxyethylene ether is commercially available from Jiangsu sea Ann petrochemical company under the trade name AC-1205, and the total amine value and tertiary amine value are 130-141mgKOH/g, m+n=5.
10. N-octadecyl diethanolamine commercially available from carbofuran chemical company, m=n=1
11. Methylcyclohexyl dimethoxy silane is commercially available from carbofuran chemical company.
12. Di-n-butyl phthalate is commercially available from the carbofuran chemical company.
13. The 3, 5-heptanediol dibenzoate was commercially available and self-made with reference to CN 1213080C.
14. Diethyl 2, 3-diisopropylsuccinate was homemade with reference to CN1313869a and CN101811983 a.
15. 2-isopropyl-2-isopentyl-1, 3-dimethoxypropane was self-made with reference to CN1036846C and CN 1020448C.
[ PREPARATION EXAMPLE 1 ]
After a 16L pressure-resistant reactor equipped with a stirrer was sufficiently replaced with nitrogen, 10L of ethanol, 300mL of 2-ethylhexanol, 11.2g of iodine, 8g of magnesium chloride and 640g of magnesium powder were added to the reactor. Stirring and simultaneously allowing the system to reflux and react until no more hydrogen is discharged. Stopping the reaction, washing with 3L ethanol for three times, filtering, and drying to obtain the alkoxy magnesium carrier. The obtained alkoxymagnesium carrier d50=30.2 um, span value 0.81, m value 0.015.
[ PREPARATIVE EXAMPLES 1-4 ]
10g of the magnesium alkoxide carrier prepared in preparation example 1 and 50mL of toluene were added to 10mmol of the electron donor compound shown in Table 1 to prepare suspensions; adding 40mL of toluene and 60mL of titanium tetrachloride into a 300mL reaction kettle repeatedly replaced by high-purity nitrogen, adding the prepared suspension into the kettle, heating to 80 ℃, keeping the temperature for 1 hour, continuously heating to 115 ℃, keeping the temperature for 2 hours, and press-filtering the liquid (mother liquor) to be clean. 90mL of a mixed solution of toluene and 60mL of titanium tetrachloride were added, the mixture was heated to 110℃and stirred for 1 hour (titanium treatment), the liquid (mother liquor) was press-filtered clean, and then 120mL of a mixed solution of toluene and 30mL of titanium tetrachloride were added, the mixture was heated to 110℃and stirred for 2 hours (titanium treatment), the liquid was filtered off, the obtained solid was washed 3 times with 150mL of n-hexane at 55℃and once with n-hexane at room temperature, the liquid was filtered off and dried, and solid catalyst components Cat-1, cat-2, cat-3, cat-4 were obtained, respectively. The internal electron donor content, ti content and Mg content of the solid catalyst components Cat-1, cat-2, cat-3 and Cat-4 were measured, and the results are shown in Table 1.
[ PREPARATION EXAMPLE 5 ]
3.150mol (300.0 g) anhydrous magnesium chloride, 19.68mol (2.1L) toluene and 8.4mol (1.1L) 2-ethylhexanol are sequentially added into a reaction kettle subjected to high-purity nitrogen repeated replacement, and the mixture is reacted for 3.0 hours under the conditions of stirring rotation speed of 450rpm and temperature of 115 ℃ to obtain stable and uniform alkoxide solution; then 84mmol (42 mL) of 3, 5-heptanediol dibenzoate and 260mmol (60 mL) of diphenyldimethoxysilane were added thereto, and the mixture was stirred for 60 minutes and cooled to room temperature.
The above homogeneous solution of the above-mentioned alcohol compound containing 84mmol (42 mL) of 3, 5-heptanediol dibenzoate and 260mmol (60 mL) of diphenyldimethoxysilane was charged into a reactor containing 60mol (6.6L) of titanium tetrachloride and 11.4mol (1.2L) of toluene at-20℃and fully replaced with nitrogen gas, and they were brought into contact with each other by stirring at-20℃for 5 hours, after which a solid precipitate was precipitated by heating to 100℃during the heating, 138.6mmol (30 g) of 2-isopropyl-2-isopentyl-1, 3-dimethoxypropane was added and reacted for 1 hour, and after the reaction was completed, the liquid was filtered; then, the solid was further contacted with 40.8mol (4.32L) of toluene, 26.2mol (2.88 mL) of titanium tetrachloride and 193.8mmol (42 g) of 2-isopropyl-2-isopentyl-1, 3-dimethoxypropane at 100℃for 1.5 hours, and after the completion of the reaction, the liquid was filtered; the solid was then contacted with 40.8mol (4.32L) toluene and 26.2mol (2.88 mL) titanium tetrachloride at 110℃for a further 0.5 hour; after the reaction, the liquid was filtered, and then 40.8mol (4.32L) of toluene and 26.2mol (2.88 mL) of titanium tetrachloride were repeatedly contacted with the solid at 110℃for one more reaction. The obtained solid was washed 5 times with 55.14mol (7.2L) of hexane and then dried to obtain an olefin polymerization catalyst solid component Cat-5. The internal electron donor content, ti content and Mg content of the solid catalyst component Cat-5 were measured, and the results are shown in Table 1.
TABLE 1 internal electron donor species and composition in preparation examples 1-5
Figure BDA0003324641160000271
[ examples 1 to 22 ]
Polymerization evaluation method a: after sufficient displacement of the propylene in the gas phase in a 5L autoclave, 1L of liquid propylene, 5mL of a hexane solution of triethylaluminum (triethylaluminum concentration: 0.5 mmol/mL) were added at room temperature, warmed to 50℃and 2mL of a hexane solution of an external electron donor (concentration: 0.10 mmol/mL) as shown in Table 2 and a solid catalyst component (B) in which the molar ratio of a to b was shown in Table 2, 10mL of anhydrous hexane and 10mg of solid catalyst component, 1.8 standard liters of hydrogen and 1L of liquid propylene were added; the temperature was raised to the corresponding polymerization temperature of Table 2 with stirring for 10 minutes, after polymerization at this temperature for 1 hour, stirring was stopped, the unpolymerized propylene monomer was removed, and the polymer PP was collected.
Polymerization evaluation method B: after sufficient displacement of propylene in the gas phase in a 5L autoclave, 1L of liquid propylene, 5mL of a hexane solution of triethylaluminum (triethylaluminum concentration: 0.5 mmol/mL) were added at room temperature, the temperature was raised to 50℃and 1mL of a mixture of a hexane solution of external electron donor b (concentration: 0.10 mmol/mL) and external electron donor a according to Table 2, 10mL of anhydrous hexane and 10mg of solid catalyst component, 1.8 standard liters of hydrogen and 1L of liquid propylene were added; the temperature was raised to the corresponding polymerization temperature of Table 2 with stirring for 10 minutes, after polymerization at this temperature for 1 hour, stirring was stopped, the unpolymerized propylene monomer was removed, and the polymer PP was collected. The specific conditions and results are shown in Table 2.
Comparative examples 1 to 10
The specific procedure is as in examples 1-10, except that the external electron donor is replaced by methylcyclohexyldimethoxy silane.
TABLE 2 catalyst Performance
Figure BDA0003324641160000281
Figure BDA0003324641160000291
In table 2, a1:n-dodecyl diethanolamine (m=n=1); a2, dodecylamine polyoxyethylene ether (m+n=5); a3. N-octadecyl diethanolamine (m=n=1); CHMDMS, methylcyclohexyldimethoxy silane.
As can be seen from the data in table 2, when the polymerization temperature is raised from 70 ℃ to 100 ℃, the polymerization activity of the catalyst system provided by the invention is remarkably reduced, and the catalyst system has better high-temperature self-deactivation characteristic, is beneficial to the application of the catalyst in industrial devices, and can improve the production safety. Meanwhile, when the external electron donor is used for propylene polymerization, high polymerization activity, good hydrogen regulation sensitivity and stereotactic capability can be obtained.
What has been described above is merely a preferred example of the present invention. It should be noted that other equivalent modifications and improvements will occur to those skilled in the art, and are intended to be within the scope of the present invention, as a matter of common general knowledge in the art, in light of the technical teaching provided by the present invention.

Claims (10)

1. An external electron donor composition comprising an alkylamine polyoxyethylene ether compound represented by the formula (I) and a siloxane compound represented by the formula (II), which is used for olefin polymerization,
Figure FDA0003324641150000011
R 1 ” m” R 2 ” n” Si(OR 3” ) 4-m”-n” (II)，
in the formula (I), m and n are the same or different and are each independently integers of 1-20, and m+n is less than 40; r is selected from C 1 -C 20 Straight-chain alkane, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Alkylaryl and C of (C) 7 -C 20 Wherein a hydrogen atom on a carbon in the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl group is optionally substituted or unsubstituted with a heteroatom, alkyl, or alkoxy, and a carbon atom on the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl backbone is optionally substituted or unsubstituted with a heteroatom;
in the formula (II), R 1 "and R 2 "same or different" each independently selected from halogen, hydrogen atom, C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); m 'and n' are each independently selected from integers from 0 to 3, and m '+n'.<4。
2. The external electron donor according to claim 1 A composition characterized in that in formula (I), R is selected from C 4 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl, C of (2) 7 -C 10 Alkylaryl and C of (C) 7 -C 10 Aralkyl of (a);
preferably, the alkylamine polyoxyethylene ether compound shown in the formula (I) is at least one selected from N-butyl diethanolamine, butylaminoethoxy ether, N-amyl diethanolamine, pentylamine polyoxyethylene ether, N-hexyl diethanolamine, hexylamine polyoxyethylene ether, N-heptyl diethanolamine, heptylamine polyoxyethylene ether, N-octyl diethanolamine, octylamine polyoxyethylene ether, N-nonyldiethanolamine, nonylamine polyoxyethylene ether, N-decyl diethanolamine, decylamine polyoxyethylene ether, N-undecylenodiethanolamine, undecylamine polyoxyethylene ether, N-dodecyl diethanolamine, dodecylamine polyoxyethylene ether, N-tridecyl diethanolamine, tridecylamine polyoxyethylene ether, N-tetradecyldiethanolamine, tetradecylamine polyoxyethylene ether, N-pentadecylenoylenoylethanolamine, pentadecylamine polyoxyethylene ether, N-hexadecyldiethanolamine, hexadecylamine polyoxyethylene ether, N-heptadecylenoylethanolamine, heptadecylamine polyoxyethylene ether, N-octadecyldiethanolamine and octadecylamine polyoxyethylene ether;
Preferably, the alkylamine polyoxyethylene ether compound shown in the formula (I) is selected from N-butyldiethanolamine (m=n=1), butylaminoethylene ether (m+n=5), butylaminoethylene ether (m+n=8), butylaminoethylene ether (m+n=10), butylaminoethylene ether (m+n=15), butylaminoethylene ether (m+n=20), butylaminoethylene ether (m+n=25), N-pentylbiethanolamine (m=1), pentylamine polyoxyethylene ether (m+n=5), pentylamine polyoxyethylene ether (m+n=8), pentylamine polyoxyethylene ether (m+n=10), pentylamine polyoxyethylene ether (m+n=15), pentylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=25), N-hexyldiethanolamine (m=1), hexylamine polyoxyethylene ether (m+n=5), hexylamine polyoxyethylene ether (m+n=8), hexylamine polyoxyethylene ether (m+n=10), hexylamine polyoxyethylene ether (m+n=15), hexylamine polyoxyethylene ether (m+n=20), pentylamine polyoxyethylene ether (m+n=20) N-heptyldiethanolamine (m=1), heptylamine polyoxyethylene ether (m+n=5), heptylamine polyoxyethylene ether (m+n=8), heptylamine polyoxyethylene ether (m+n=10), heptylamine polyoxyethylene ether (m+n=15), heptylamine polyoxyethylene ether (m+n=20), heptylamine polyoxyethylene ether (m+n=25), N-octyldiethanolamine (m=n=1), octylamine polyoxyethylene ether (m+n=5), octylamine polyoxyethylene ether (m+n=8), octylamine polyoxyethylene ether (m+n=10), octylamine polyoxyethylene ether (m+n=15), octylamine polyoxyethylene ether (m+n=20), octylamine polyoxyethylene ether (m+n=25), N-nonylamine polyoxyethylene ether (m=n=1), nonylamine polyoxyethylene ether (m+n=5), nonylamine polyoxyethylene ether (m+n=10), nonylamine polyoxyethylene ether (m+n=15), nonylamine polyoxyethylene ether (m+n=20), nonylamine polyoxyethylene ether (m+n=n=5), nonylamine polyoxyethylene ether (m+n=n=25), decylamine polyoxyethylene ether (m+n=1), n=n=5), decyl amine polyoxyethylene ether (m+n=8), decyl amine polyoxyethylene ether (m+n=10), decyl amine polyoxyethylene ether (m+n=15), decyl amine polyoxyethylene ether (m+n=20), decyl amine polyoxyethylene ether (m+n=25), N-undecylenoyl diethanolamine (m+n=1), undecylenoyl polyoxyethylene ether (m+n=5), undecylenoyl polyoxyethylene ether (m+n=8), undecylenoyl polyoxyethylene ether (m+n=10), undecylenoyl polyoxyethylene ether (m+n=15), undecylenoyl polyoxyethylene ether (m+n=20), undecylenoyl polyoxyethylene ether (m+n=25), N-dodecyl diethanolamine (m=n=1), dodecyl polyoxyethylene ether (m+n=5), dodecyl polyoxyethylene ether (m+n=8), dodecyl polyoxyethylene ether (m+n=10), dodecyl polyoxyethylene ether (m+n=15), dodecyl polyoxyethylene ether (m+n=20), dodecyl polyoxyethylene ether (m+n=25), N-tridecyl diethanolamine (m=n=1), tridecyl polyoxyethylene ether (m+n=5), and tridecyl polyoxyethylene ether (m+n=8) Tridecyl polyoxyethylene ether (m+n=10), tridecyl polyoxyethylene ether (m+n=15), tridecyl polyoxyethylene ether (m+n=20), tridecyl polyoxyethylene ether (m+n=25), N-tetradecyl diethanolamine (m=n=1), tetradecyl polyoxyethylene ether (m+n=5), tetradecyl polyoxyethylene ether (m+n=8), tetradecyl polyoxyethylene ether (m+n=10), tetradecyl polyoxyethylene ether (m+n=15), tetradecyl polyoxyethylene ether (m+n=20), tetradecyl polyoxyethylene ether (m+n=25), N-pentadecyl diethanolamine (m=n=1), pentadecyl polyoxyethylene ether (m+n=5), pentadecyl polyoxyethylene ether (m+n=8), pentadecyl polyoxyethylene ether (m+n=10), pentadecyl polyoxyethylene ether (m+n=15), pentadecyl polyoxyethylene ether (m+n=20), N-hexadecyl diethanolamine (m=1), hexadecyl polyoxyethylene ether (m+n=5), hexadecyl polyoxyethylene ether (m+n=8), hexadecyl polyoxyethylene ether (m+n=10) At least one of hexadecylamine polyoxyethylene ether (m+n=15), hexadecylamine polyoxyethylene ether (m+n=20), hexadecylamine polyoxyethylene ether (m+n=25), N-heptadecylethanolamine (m=n=1), heptadecylamine polyoxyethylene ether (m+n=5), heptadecylamine polyoxyethylene ether (m+n=8), heptadecylamine polyoxyethylene ether (m+n=10), heptadecylamine polyoxyethylene ether (m+n=15), heptadecylamine polyoxyethylene ether (m+n=20), heptadecylamine polyoxyethylene ether (m+n=25), N-octadecyldiethanolamine (m=n=1), octadecylamine polyoxyethylene ether (m+n=2), octadecylamine polyoxyethylene ether (m+n=5), octadecylamine polyoxyethylene ether (m+n=8), octadecylamine polyoxyethylene ether (m+n=10), octadecylamine polyoxyethylene ether (m+n=15), octadecylamine polyoxyethylene ether (m+n=20), and octadecylamine polyoxyethylene ether (m+n=25).
3. The external electron donor composition according to claim 1 or 2, wherein in formula (II), R 1 "and R 2 "each independently selected from halogen, hydrogen atom, C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 10 Straight chain alkyl, C 3 -C 10 Branched alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 10 Aryl and C of (2) 1 -C 10 A haloalkyl group of (2);
preferably, the method comprises the steps of, the siloxane compound is selected from trimethylmethoxysilane, diisopropyldimethoxysilane, diisobutyldimethoxysilane, isopropylisobutyldimethoxysilane, di-tert-butyldimethoxysilane, tert-butylmethyldimethoxysilane, tert-butylethyldimethoxysilane, tert-butylpropyldimethoxysilane, tert-butylisopropyldimethoxysilane, cyclohexylmethyldimethoxysilane, dicyclohexyldimethoxysilane, cyclohexyl-tert-butyldimethoxysilane, cyclopentylmethyldimethoxysilane, cyclopentylethyldimethoxysilane, dicyclopentyldimethoxysilane, cyclopentylcyclohexyldimethoxysilane, bis (2-methylcyclopentyl) dimethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane at least one of phenyltriethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, isopropyltrimethoxysilane, isopropyltriethoxysilane, butyltrimethoxysilane, butyltriethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, pentyltrimethoxysilane, isopentyltrimethoxysilane, cyclopentyltrimethoxysilane, cyclohexyltrimethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, tetramethoxysilane, tetraethoxysilane and tetrabutoxysilane.
4. The external electron donor composition according to any one of claims 1 to 3, wherein the alkylamine polyoxyethylene ether compound represented by the formula (I) is 5 to 95 mol%, preferably 5 to 60 mol%, more preferably 10 to 40 mol% of the external electron donor composition.
5. Use of the external electron donor composition according to any of claims 1 to 4 as external internal electron donor in a catalyst system for the polymerization of olefins.
6. A catalyst system for olefin polymerization comprising
(1) An external electron donor composition a;
(2) A solid catalyst component B containing a magnesium compound, a titanium compound, a halogen and an internal electron donor compound; and
(3) An alkylaluminum compound C as a cocatalyst;
wherein the external electron donor composition A comprises an alkylamine polyoxyethylene ether compound shown in a formula (I) and a siloxane compound shown in a formula (II),
Figure FDA0003324641150000041
R 1 ” m” R 2 ” n” Si(OR 3” ) 4-m”-n” (II)，
in the formula (I), m and n are the same or different and are each independently integers of 1-20, and m+n is less than 40; r is selected from C 1 -C 20 Straight-chain alkane, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl, C of (2) 7 -C 20 Alkylaryl and C of (C) 7 -C 20 Wherein a hydrogen atom on a carbon in the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl group is optionally substituted or unsubstituted with a heteroatom, alkyl, or alkoxy, and a carbon atom on the alkyl, cycloalkyl, aryl, alkylaryl, or arylalkyl backbone is optionally substituted or unsubstituted with a heteroatom;
In the formula (II), R 1 "and R 2 "same or different" each independently selected from halogen, hydrogen atom, C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Cycloalkyl, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); r is R 3 "selected from C 1 -C 20 Straight chain alkyl, C 3 -C 20 Branched alkyl, C 3 -C 20 Is a cycloalkane of (C)Radical, C 6 -C 20 Aryl and C of (2) 1 -C 20 A haloalkyl group of (2); m 'and n' are each independently selected from integers from 0 to 3, and m '+n'.<4。
7. Catalyst system according to claim 6, characterized in that in the solid catalyst component B, magnesium is in terms of magnesium atoms, titanium is in terms of titanium atoms, halogen is in terms of halogen atoms, the content of titanium atoms being 1.0-8.0% by weight, preferably 1.6-6.0% by weight; the content of magnesium atoms is 10 to 70 wt%, preferably 15 to 40 wt%; the halogen atom content is 20 to 90 wt%, preferably 30 to 85 wt%; the content of the internal electron donor compound is 2 to 30% by weight, preferably 3 to 20% by weight.
8. The catalyst system according to claim 6 or 7, characterized in that the molar ratio of the alkyl aluminum compound to titanium in the catalyst system, calculated as aluminum, is 5-5000:1; preferably 20-1000:1; more preferably 50-500:1.
9. Catalyst system according to any of claims 6-8, characterized in that the molar ratio of the alkyl aluminium compound C to the external electron donor a calculated as aluminium is 0.5-1 to 50:1, preferably 1-30:1, more preferably 1-20:1.
10. A process for the polymerization of olefins comprising contacting one or more olefins with the catalyst system of any of claims 6 to 9 to obtain a polymer, wherein at least one of the olefins is of the formula CH 2 Olefins represented by =chr, wherein R is selected from hydrogen or C 1 -C 6 Is a hydrocarbon group.
CN202111257736.3A 2021-10-27 2021-10-27 External electron donor composition, application thereof, catalyst system and olefin polymerization method Pending CN116023548A (en)

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