CN109369835A - For the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing and its application - Google Patents
For the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing and its application Download PDFInfo
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Abstract
The invention discloses a kind of for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing and its application.The cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric includes major catalyst, co-catalyst and chain-transferring agent；The major catalyst is the bridging cyclopentadienyl rare-earth metal compound of a kind of sulfur-bearing or oxa- ring structure, with cis-structure formula or transconfiguration formula.The present invention is major catalyst using the bridging cyclopentadienyl rare-earth metal compound of sulfur-bearing or oxa- ring structure using single or hybrid long chain alpha-olefin as polymer raw, while in the case where cooperating co-catalyst and chain-transferring agent, having synthesized the excellent PAO of viscosity temperature characteristic.There is relatively high viscosity index using the PAO that method provided by the invention obtains, and by changing temperature, or the use of different chain-transferring agents, can significantly adjust the kinematic viscosity of PAO.
Description
Technical field
The present invention relates to a kind of for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing and its application, and in particular to
It is a kind of using single or mixed long-chain alpha-olefin as raw material, the polymerization of synthesizing poly alpha-olefin, belong to alpha-olefine polymerizing preparation
The technical field of poly alpha olefine synthetic oil.
Background technique
Poly alpha olefin (PAO) is one kind of synthetic base oil, is a kind of Synthin profit by chemical synthesis process preparation
Lubricating oil, composition are the long chain alkanes of comparison rule, are a kind of synthetic lubricant base oils haveing excellent performance, and are current synthesis hairs
Most widely used one of oil base stock in motivation oil, gear oil and other iundustrial oils, rouge.Oil pole is synthesized by its modulation
The earth extends application range of the lubricant grease under low temperature, high temperature, high load capacity and other harsh conditions, provides excellent glue
Warm nature energy, thermal oxidation stability, lubrication and wear resistance and detergency, thus the oil draining period is greatly extended, it slows down and sets
Standby corrosion and abrasion, reduces the maintenance cycle of equipment, improves the utilization rate and service life of equipment.
Poly alpha olefin is usually produced by the technology of olefin catalytic polymerization, and the raw material used is C8-C12Alpha-olefin in
Monomer or mixed olefins, polymerization catalyst be lewis acid catalyst or Ziegler-Natta catalyst.It is poly- by improving
Technique and polymerization catalyst are closed to improve the service performance of base oil.By the development of many years, the production technology of poly alpha olefin has
It is very big to improve.
To be different from conventional PAO, the poly- α-alkene of metallocene is referred to as using poly alpha olefin synthesized by metallocene catalyst
Hydrocarbon, i.e. mPAO (metallence PAO).PAO molecule possesses backbone outstanding under normal conditions, stretches from backbone with disordered fashion
Side chain different in size out.And mPAO uses metallocene catalyst synthesis technology, metallocene is single site catalysts, solely
The available very uniform chemical products of special geometry, so mPAO possesses pectinate texture, there is no upright side chains.With it is normal
Rule PAO possesses improved rheological behavior and flow characteristics compared to this shape, so as to preferably provide shear stability, lower
Pour point and higher Viscosity Index, especially because have less side chain and have the shear stable more much higher than conventional PAO
Property.What these characteristics determined mPAO is the application of high severity, including power drive system and gear oil, compression using target
Machine lubricating oil, transmission fluid and industrial lubricant.
Metallocene catalysis synthesis technology has following feature: firstly, metallocene catalysis alpha-olefine polymerizing is with very high
Catalytic activity, up to arrive every gram of catalyst of dozens or even hundreds of kilogram of PAO, thus in the synthesis process consumed by catalysis
The amount of agent and co-catalyst is very small；Secondly as metallocene catalyst is single site catalysts, single active center's polyene
Hydrocarbon catalyst can control the microstructure of synthesized molecular polyolefin well, that is to say, that catalytic polymerization degree can be with technique
It changes and is effectively adjusted, there is very big elasticity, so as to accurately control chemical structure, the molecular weight of molecular polyolefin
And molecular weight distribution, it can directly produce the PAO product of required viscosity grade according to actual needs using this feature, simplify
The technological process of production；Furthermore since the catalyst system has very high catalytic activity, so there was only 2 hours or so reaction time,
The production cycle is substantially reduced, production efficiency is improved；Finally, due to the amount very little of catalyst and co-catalyst used, after
Treatment process is simple, can effectively reduce the discharge of the three wastes.
The Chinese patent of publication number CN1549852 discloses one kind and is prepared for one kind in the presence of single site catalysts
Or the method for a variety of olefin oligomers.Preferred alkenes are alpha-olefins, and the oligomer is poly alpha olefin (PAO).Made of in this way
PAO does not contain the tertiary hydrogen generated due to isomerization completely or substantially.Therefore, which has improved biological degradability, changes
Kind inoxidizability and/or relatively higher viscosity index (VI).The PAO, which has, such as to be answered as many useful of lubricant composition
With.
Publication number CN101617033 Chinese patent invention lubricant oil composite contain 100 DEG C kinematic viscosity be 1~
5mm2The lubricant base of/s and 100 DEG C of kinematic viscosity are 20~2000mm2/ s's is selected from olefin copolymer (OCP) and poly- α-
At least one of alkene (PAO), 100 DEG C of kinematic viscosity are 8.0mm2/ s or less and viscosity index (VI) are 155 or more.
United States Patent (USP) US6548723 discloses a kind of using metallocene or organic metal amine salt catalysis 1- decene and ethylene
The method that oligomerisation prepares lube base oil PAO, catalyst are mainly the cyclopentadienyl metallocene of non-bridging, are in Al/Zr
Gained PAO is low viscosity base oil when 1000.
United States Patent (USP) US6706828 is mainly being faced using the means of special bridged metallocene catalysts that double indenyls of meso silicon bridging replace
Using 1- decene as Material synthesis PAO under hydrogen state, the catalyst catalytic performance of different meso with rac structures is different, passes through change
The configuration ratio and Hydrogen Vapor Pressure of catalyst all have the viscosity temperature characteristic of catalyst system and obtained PAO product biggish
It influences.
The Chinese patent of publication number CN105062555 disclose it is a kind of with fischer-tropsch synthesis process production coal alpha-olefin be
Polymer raw has synthesized viscosity temperature characteristic excellent mPAO under the action of metallocene catalyst；Instead of expensive pure
On the one hand alpha-olefine polymerizing raw material reduces the production cost of PAO, on the other hand, improve the economy of fischer-tropsch synthesis process.
Above-mentioned patent refers to that ethylene oligomerization method obtains 1- decene or 1- octene is raw material to polymerize to obtain PAO mostly, also has
Patent, which is referred to using coal alpha-olefin as raw material, synthesizes PAO.Catalyst system disclosed by the invention can not only polymerize single length
Chain alpha-olefin, while class long-chain alpha-olefin, such as the coal alpha-olefin of fischer-tropsch synthesis process production can also be mixed with catalytic polymerization.
Moreover, using ternary cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric disclosed by the invention, can polymerize to obtain viscosity temperature characteristic excellent
The features such as PAO has high viscosity index (HVI), and kinematic viscosity is adjustable.
Summary of the invention
Problem to be solved by this invention is: providing a kind of cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric for alpha-olefine polymerizing
And its polymerization.
To solve the above-mentioned problems, the present invention provides a kind of cyclopentadienyl rare-earth metal catalyst combinations for alpha-olefine polymerizing
Object, which is characterized in that including major catalyst, co-catalyst and chain-transferring agent；The major catalyst is a kind of sulfur-bearing or oxa- ring
The bridging cyclopentadienyl rare-earth metal compound of structure, with cis-structure formula, as shown in formula I:
Or transconfiguration formula, as shown in formula II:
Wherein, Ln is rare earth metal；M is C or Si；A is S or O；R1、R2It is the alkyl or aryl of 1-6 carbon number, and two
Person is identical or different；X1For the initiation group being connected with rare earth metal.
Preferably, the Ln is in scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium
Any one；X1For alkyl, alkynyl, trimethyl silicon substrate, alkoxy, benzyl, cyclopentadienyl group, indenyl, fluorenyl, fluorine, chlorine, bromine
With any one in iodine.
It is highly preferred that the bridged combined metal compound of the sulfur-bearing or oxa- ring structure is wherein the one of following complex compound
Kind:
Complex compound 1: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) gadolinium chloride；
Complex compound 2: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate
Gadolinium；
Complex compound 3: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) neodymium chloride；
Complex compound 4: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate
Neodymium；
Complex compound 5: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) samarium trichloride；
Complex compound 6: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate
Samarium；
Complex compound 7: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) gadolinium chloride；
Complex compound 8: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate
Gadolinium；
Complex compound 9: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) neodymium chloride；
Complex compound 10: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate
Neodymium；
Complex compound 11: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) samarium trichloride；
Complex compound 12: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate
Samarium.
Preferably, the co-catalyst is alkylaluminoxane reagent or organoboron reagent.
It is highly preferred that alkylaluminoxane is methylaluminoxane, ethylaluminoxane, n-propyl alumina in the co-catalyst
Any one or a few in alkane, normal-butyl aikyiaiurnirsoxan beta and isobutyl aluminium alkoxide.
It is highly preferred that organoboron reagent is [Ph in the co-catalyst3C][B(C6F5)4]、[PhMe2NH][B(C6F5)4]、
B(C6F5)3In any one or a few.
It is highly preferred that the molar ratio of rare earth metal is (10-5000) in aluminium and major catalyst in the co-catalyst: 1；
Alternatively, the molar ratio of rare earth metal is (1-200) in boron and major catalyst in the co-catalyst: 1.
Preferably, the chain-transferring agent includes aluminon and alkyl zinc reagent, and aluminon is that molecular formula is AlY3Alkyl
Aluminium, molecular formula HAlY2Alkyl-al hydride or molecular formula be AlY2The alkyl aluminum chloride of Cl, wherein Y is alkyl.
It is highly preferred that the alkyl aluminum that aluminon uses in the chain-transferring agent is trimethyl aluminium, triethyl aluminum, three n-propyl
Aluminium, triisobutyl aluminium, three hexyl aluminium, three n-butylaluminums, triisopropylaluminiuand, thricyclohexyl aluminium, trioctylaluminum, triphenyl aluminum, three
In p-methylphenyl aluminium, tribenzyl aluminium, three n-butylaluminum, ethyl di-p-tolyl aluminium and diethylbenzyl aluminium any one or
It is several；Alkyl-al hydride be dimethyl hydrogenated aluminium, diethylaluminum hydride, diη-propyl aluminum hydride, diisobutyl aluminium hydride, two oneself
Base aluminum hydride, di-n-butyl aluminum hydride, diisopropyl aluminum hydride, dicyclohexyl aluminum hydride, dioctyl aluminum hydride, diphenyl hydrogenation
Aluminium, di-p-tolyl aluminum hydride, dibenzyl aluminum hydride, Ethylbenzyl aluminum hydride, ethyl p-methylphenyl aluminum hydride and Ethylbenzyl
Any one or a few in aluminum hydride；Alkyl aluminum chloride is chlorodimethylalumiu, diethylaluminum chloride, chlorination diη-propyl
Aluminium, chlorination diisopropyl aluminium, chlorination di-n-butyl aluminium, di-isobutyl aluminum chloride, chlorination diamyl aluminium, chlorination dihexyl aluminium, chlorine
Change dicyclohexyl aluminium, chlorination dioctyl aluminium, chlorinated diphenyl base aluminium, chlorination di-p-tolyl aluminium, chlorination dibenzyl aluminium, tonsilon
Any one or a few in benzyl aluminium and tonsilon p-methylphenyl aluminium.
It is highly preferred that alkyl zinc reagent is zinc methide, diethyl zinc, appointing in diisopropyl zinc in the chain-transferring agent
Meaning is one or more of.
It is highly preferred that the molar ratio of rare earth metal is (1-1000) in aluminium and major catalyst in the chain-transferring agent: 1；
Alternatively, the molar ratio of rare earth metal is (1-1000) in zinc and major catalyst in the chain-transferring agent: 1.
The present invention also provides a kind of applications of above-mentioned cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric for alpha-olefine polymerizing.
Preferably, specifically: in an inert atmosphere, single or hybrid long chain alpha-olefin and cyclopentadienyl rare-earth metal are catalyzed
Major catalyst, co-catalyst, the chain-transferring agent of agent composition successively mix, and carry out polymerization reaction, and reaction temperature is 20~150
℃。
It is highly preferred that described single or hybrid long chain alpha-olefin is 1- heptene, 1- octene, 1- nonene, 1- decene, 1- 11
Any one or a few mixture in carbene, 1- dodecylene, 1- tridecylene, tetradecene and cetene.
Cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric according to the present invention can be used for producing alpha-olefine polymers, be particularly suitable for list
One or the polymerization of mixed long-chain alpha-olefin, and make kinematic viscosity controllable.
Specific embodiment
In order to make the present invention more obvious and understandable, it is hereby described in detail below with preferred embodiment.
Polymerization in embodiment 1-10 are as follows: in an inert atmosphere, by single or hybrid long chain alpha-olefin, main reminder
Agent, co-catalyst, chain-transferring agent successively mix, and carry out polymerization reaction；Reaction temperature is 80~120 DEG C, and the reaction time is general
It is 2 hours, stops stirring, terminated and reacted with water, centrifuge separation is poured out supernatant liquor, supernatant liquor rotary evaporation is removed
The excellent mPAO of viscosity temperature characteristic can be obtained in unreacted monomer.
The test method of every viscosity temperature characteristic of the mPAO obtained after treatment is as follows:
Oil product kinematic viscosity measuring method and dynamic viscosity calculating method: GB/T 265.
Oil product viscosity index (VI) calculating method: GB/T 1995.
Homogeneous catalytic olefin combined polymerization:
Embodiment 1
Complex compound 1 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of triethyl aluminum (1.0mol/L in toluene) nitrogen protection of 1mL to reaction
In bottle, half an hour is stirred.Weigh 20mg complex compound 1, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzo
Thiophene) gadolinium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, is somebody's turn to do configured
Catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
Embodiment 2
Complex compound 1 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Polymeric reaction condition and operating process difference from example 1 is that: polymerization temperature is maintained at 100 DEG C.
Embodiment 3
Complex compound 1 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Polymeric reaction condition and operating process difference from example 1 is that: polymerization temperature is maintained at 110 DEG C.
Embodiment 4
Complex compound 1 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Polymeric reaction condition and operating process difference from example 1 is that: polymerization temperature is maintained at 120 DEG C.
100 DEG C of kinematic viscosity of poly alpha olefin made from embodiment 1-4, composition are measured, the results are shown in Table 1.
Table 1
Seen from table 1, with the raising of polymerization temperature, the content of the dimer in product increases, trimer content variation
It is unobvious, at the same tetramer and the above constituent content reduce so cause the viscosity of obtained PAO as the temperature rises and
It reduces.
Embodiment 5
Complex compound 3 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of triethyl aluminum (1.0mol/L in toluene) nitrogen protection of 1mL to reaction
In bottle, half an hour is stirred.Weigh 20mg complex compound 3, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzo
Thiophene) neodymium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, is somebody's turn to do configured
Catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
Embodiment 6
Complex compound 5 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of triethyl aluminum (1.0mol/L in toluene) nitrogen protection of 1mL to reaction
In bottle, half an hour is stirred.Weigh 20mg complex compound 5, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzo
Thiophene) samarium trichloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, is somebody's turn to do configured
Catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
Embodiment 7
Complex compound 7 and its carbon monoxide-olefin polymeric are catalyzed alpha-olefine polymerizing:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of triethyl aluminum (1.0mol/L in toluene) nitrogen protection of 1mL to reaction
In bottle, half an hour is stirred.Weigh 20mg complex compound 7, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzo
Furans) gadolinium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, is somebody's turn to do configured
Catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
The PAO viscosity data as synthesized by major catalysts different in embodiment 1,5,6,7 is shown in Table 2.
Table 2
As can be seen from Table 2, mPAO viscosity index (VI) obtained in embodiment 1,5,6,7 is larger, 200 or more, this explanation
When such metallocene catalyst for containing heterocycle is as major catalyst, the excellent PAO of viscosity temperature characteristic can get.
Embodiment 8
Alpha-olefine polymerizing is catalyzed using triisobutyl aluminium chain-transferring agent:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of triisobutyl aluminium (1.0mol/L in toluene) nitrogen protection of 1mL to anti-
It answers in bottle, stirs half an hour.Weigh 20mg complex compound 1, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopentadiene acene
Bithiophene) gadolinium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, it will be configured
The catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
Embodiment 9
Alpha-olefine polymerizing is catalyzed using diethylaluminum hydride chain-transferring agent:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Close object, be warming up to 90 DEG C, will be added under the conditions of diethylaluminum hydride (1.0mol/L in toluene) nitrogen protection of 1mL to
In reaction flask, half an hour is stirred.Weigh 20mg complex compound 1, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta
Benzothiophene) gadolinium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, will configure
The catalyst solution be added into reaction flask, polymerization starts, keep 90 DEG C reaction.After 2 hours plus water terminates the reaction, is centrifuged
Separation, is poured out supernatant liquor, and supernatant liquor rotary evaporation is removed unreacted monomer, and viscosity-temperature characteristics can be obtained can be excellent
PAO。
Embodiment 10
Alpha-olefine polymerizing is catalyzed using diisopropyl zinc chain-transferring agent:
Under high pure nitrogen protective condition, it is mixed that 200mL alpha-olefin is measured in the reaction flask of the 500mL equipped with magnetic agitation
Object is closed, is warming up to 90 DEG C, will be added under the conditions of diisopropyl zinc (1.0mol/L in toluene) nitrogen protection of 1mL to anti-
It answers in bottle, stirs half an hour.Weigh 20mg complex compound 1, dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopentadiene acene
Bithiophene) gadolinium chloride, it is dissolved in the methylaluminoxane (MAO) (1.0mol/L in toluene) of 2mL, it will be configured
The catalyst solution is added into reaction flask, and polymerization starts, and keeps 90 DEG C of reactions.After 2 hours plus water terminates the reaction, centrifugation point
From supernatant liquor is poured out, supernatant liquor rotary evaporation is removed unreacted monomer, the PAO that viscosity-temperature characteristics can be excellent can be obtained.
100 DEG C of kinematic viscosity of poly alpha olefin made from embodiment 1,8,9,10 are measured, the results are shown in Table 3.
Table 3
Seen from table 3, in the case where other conditions are identical, only change the type of chain-transferring agent, it can be apparent
Adjust the kinematic viscosity of PAO.That is, the molecular weight of polymer can significantly be adjusted by introducing different chain-transferring agents, this
Have great importance to the PAO of production different viscosities.
Claims (10)
1. a kind of cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric for alpha-olefine polymerizing, which is characterized in that including major catalyst, help and urge
Agent and chain-transferring agent；The major catalyst is the bridging cyclopentadienyl rare-earth metal compound of a kind of sulfur-bearing or oxa- ring structure, tool
There is cis-structure formula, as shown in formula I:
Or transconfiguration formula, as shown in formula II:
Wherein, Ln is rare earth metal；M is C or Si；A is S or O；R1、R2It is the alkyl or aryl of 1-6 carbon number, and the two phase
It is same or different；X1For the initiation group being connected with rare earth metal.
2. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as described in claim 1, which is characterized in that described
Ln is any one in scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium；X1For alkyl,
Any one in alkynyl, trimethyl silicon substrate, alkoxy, benzyl, cyclopentadienyl group, indenyl, fluorenyl, fluorine, chlorine, bromine and iodine.
3. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as claimed in claim 2, which is characterized in that described
The bridged combined metal compound of sulfur-bearing or oxa- ring structure is the one of which of following complex compound:
Complex compound 1: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) gadolinium chloride；
Complex compound 2: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate gadolinium；
Complex compound 3: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) neodymium chloride；
Complex compound 4: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate neodymium；
Complex compound 5: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) samarium trichloride；
Complex compound 6: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzothiophene) trimethyl silicon substrate samarium；
Complex compound 7: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) gadolinium chloride；
Complex compound 8: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate gadolinium；
Complex compound 9: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) neodymium chloride；
Complex compound 10: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate neodymium；
Complex compound 11: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) samarium trichloride；
Complex compound 12: dimethyl-silicon (2- methyl-benzindene) (2- methyl-cyclopenta benzofuran) trimethyl silicon substrate samarium.
4. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as described in claim 1, which is characterized in that described
Co-catalyst is alkylaluminoxane reagent or organoboron reagent；The chain-transferring agent includes aluminon and alkyl zinc reagent, aluminium examination
Agent is that molecular formula is AlY3Alkyl aluminum, molecular formula HAlY2Alkyl-al hydride or molecular formula be AlY2The alkyl chlorination of Cl
Aluminium, wherein Y is alkyl.
5. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as claimed in claim 4, which is characterized in that described
Alkylaluminoxane is methylaluminoxane, ethylaluminoxane, n-propyl aikyiaiurnirsoxan beta, normal-butyl aikyiaiurnirsoxan beta and isobutyl group in co-catalyst
Any one or a few in aikyiaiurnirsoxan beta；Organoboron reagent is [Ph in the co-catalyst3C][B(C6F5)4]、[PhMe2NH][B
(C6F5)4]、B(C6F5)3In any one or a few；The alkyl aluminum that aluminon uses in the chain-transferring agent for trimethyl aluminium,
It is triethyl aluminum, tri-n-n-propyl aluminum, triisobutyl aluminium, three hexyl aluminium, three n-butylaluminums, triisopropylaluminiuand, thricyclohexyl aluminium, three pungent
Base aluminium, triphenyl aluminum, three p-methylphenyl aluminium, tribenzyl aluminium, three n-butylaluminum, ethyl di-p-tolyl aluminium and diethylbenzyl
Any one or a few in aluminium；Alkyl-al hydride is dimethyl hydrogenated aluminium, diethylaluminum hydride, diη-propyl aluminum hydride, two
Isobutylaluminiumhydride, dihexyl aluminum hydride, di-n-butyl aluminum hydride, diisopropyl aluminum hydride, dicyclohexyl aluminum hydride, dioctyl
Aluminum hydride, diphenyl aluminum hydride, di-p-tolyl aluminum hydride, dibenzyl aluminum hydride, Ethylbenzyl aluminum hydride, ethyl p-methylphenyl
Any one or a few in aluminum hydride and Ethylbenzyl aluminum hydride；Alkyl aluminum chloride is chlorodimethylalumiu, diethyl base
Aluminium, chlorination diη-propyl aluminium, chlorination diisopropyl aluminium, chlorination di-n-butyl aluminium, di-isobutyl aluminum chloride, chlorination diamyl aluminium,
Chlorination dihexyl aluminium, chlorination dicyclohexyl aluminium, chlorination dioctyl aluminium, chlorinated diphenyl base aluminium, chlorination di-p-tolyl aluminium, chlorination two
Any one or a few in benzyl aluminium, tonsilon benzyl aluminium and tonsilon p-methylphenyl aluminium；Alkane in the chain-transferring agent
Base zincon is zinc methide, diethyl zinc, any one or a few in diisopropyl zinc.
6. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as claimed in claim 4, which is characterized in that described
The molar ratio of rare earth metal is (10-5000) in aluminium and major catalyst in co-catalyst: 1；Alternatively, in the co-catalyst
The molar ratio of rare earth metal is (1-200) in boron and major catalyst: 1.
7. being used for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing as claimed in claim 4, which is characterized in that described
The molar ratio of rare earth metal is (1-1000) in aluminium and major catalyst in chain-transferring agent: 1；Alternatively, in the chain-transferring agent
The molar ratio of rare earth metal is (1-1000) in zinc and major catalyst: 1.
8. answering for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing described in a kind of claim 1-7 any one
With.
9. the application for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing, feature exist as claimed in claim 8
In, specifically: in an inert atmosphere, by single or hybrid long chain alpha-olefin and cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric master
Catalyst, co-catalyst, chain-transferring agent successively mix, and carry out polymerization reaction, and reaction temperature is 20~150 DEG C.
10. the application for the cyclopentadienyl rare-earth metal carbon monoxide-olefin polymeric of alpha-olefine polymerizing, feature exist as claimed in claim 9
In described single or hybrid long chain alpha-olefin is 1- heptene, 1- octene, 1- nonene, 1- decene, 1- endecatylene, 12 carbon of 1-
Any one or a few mixture in alkene, 1- tridecylene, tetradecene and cetene.
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