CN1164242A - Gas phase production of polydienes - Google Patents

Abstract

Disclosed is a method used to produce polybutadiene or polyisoprene in a gas phase reactor. By the method, butadiene or isoprene monomers and casually-selected inert gases are pumped into a polymerization section consecutively or intermittently. Meanwhile, the temperature of the polymerization section should be kept below the monomer dew point in the polymerization section. In addition, the method is used in the presence of rare earth catalyst and inert particle material.

Description

The gas phase production of polydiolefin

The application be in August, 1994 application number of 2 Japan-US state priority requisitions be 284797 part continuation application.

Invention field

The present invention relates to a kind of method of in Gas-phase reactor, producing polydiolefin.More specifically, the present invention relates to a kind of method of in the presence of rare-earth metal catalyst, in gas-phase fluidized-bed reactor, making polyhutadiene and polyisoprene.

Background of invention

Polydiolefin, for example polyhutadiene and polyisoprene were produced a lot of years with solution polymerization process, then used bulk or bulk polymerization production recently.The various catalyst solutions and bulk or the bulk polymerization that are used for the polymerization divinyl are suitable for producing and have high-content 1, and the polyhutadiene of 4-cis divinyl is a technique known in the prior art.Polyhutadiene is particularly suitable for making tire, transmission belt and other molding or extruded rubber goods or elastomeric article.

In solution polymerization, divinyl is polymerization in a kind of inert solvent or thinner, and its inert solvent or thinner do not enter the structure of the polymkeric substance that makes or the polymkeric substance that makes is not had disadvantageous effect.This solvent is aliphatic hydrocarbon, aromatic hydrocarbons and cyclic aliphatic hydrocarbon such as pentane, hexane, heptane, benzene, toluene, hexanaphthene etc. normally.In block polymerization, the essentially no solvent of reaction medium and with monomer as thinner.

Be used to produce the discovery of the gas-phase fluidized-bed of polymkeric substance, particularly polyolefin polymer and stirred reactor method, make and to produce very desirable and improve the various novel polymers of performance.Be used to produce these gas phase process, particularly phase fluidised bed processes of this base polymer, compare, provide a kind of capital investment expense to reduce significantly with other conventional polymerization process, and the method for the production polymkeric substance of remarkable conserve energy consumption.

In the phase fluidised bed processes of routine, will contain one or more monomeric gaseous stream and feed and contain in polymeric segment just in the fluidized-bed reactor of growing polymer particles bed, simultaneously polymerizing catalyst is added polymeric segment continuously or intermittently.Required polymeric articles draws off, outgases, stablizes and pack so that load and transport with known technology auto-polymerization section entirely.Because polyreaction is heat release, must remove in the big calorimetric that polymeric segment produces, to prevent that polymer beads is overheated and to be fused together.This is by unreacted hot gas is removed from polymeric segment continuously, and replaces and realize with colder gas.The hot gas compression that to shift out from polymeric segment, and cooling in heat exchanger, replenish the monomer of a certain amount of monomer in addition to replace polymeric and from conversion zone, to remove, be recycled into reactor bottom then.The cooling of recycle gas can be finished in one or more heat exchangers.Compression and cooling order are selected according to design, but preferably make the hot gas compression usually before cooling.The flow velocity of gas injection and outflow reactor remains to and makes bed of polymer particles keep the level of fluidized state.It is very similar to produce polymkeric substance in agitated bed reactor, and the key distinction is employedly to help to keep polymer bed to be in the mechanical stirring device of fluidized state.

Conventional gas-phase fluidized-bed production of resins is well known in the prior art, and is for example disclosed in United States Patent (USP) 4379758,4383095 and 4876320, is introduced into as a reference here.

In the gas phase stirred reactor, produce polymer material and be also known in the art, illustrate by the method and apparatus of in United States Patent (USP) 3256263, describing.

Recently, in United States Patent (USP) 4994534 and 5304588, spoken of sticky polymers, comprise polybutadiene rubber, can in the presence of inert particle material, have in the presence of the catalyzer, be higher than under the polymeric reaction condition of softening temperature of sticky polymers, in fluidized-bed reactor, produce.The sticky polymers of producing in vapor phase process is the particle that contains rubber and inert material mixture, and this particulate core mainly is a rubber and shell mainly is an inert material.In addition, United States Patent (USP) 5317036 discloses a kind of gas phase polymerization process, adopts the carrier free soluble catalyst, such as trasition metal coordination catalyst.This catalyzer feeds reactor with solution, for example in the fluidized-bed.The polyolefine of Sheng Chaning can contain diolefine in this way.EP0647657 A1 discloses the rare earth supported catalyst that is used for the conjugated diolefine vapour phase polymerization.

For many years, people think by mistake polymeric segment that the liquid that makes any kind of enters Gas-phase reactor will unavoidably cause resin particle agglomeration, form big bulk polymer and reactor shut down fully.Based on this, the circulating current that makes gas phase polymer production person avoid meticulously entering reactor is cooled to temperature and is lower than any monomeric condensing temperature of using in the polyreaction.

Comonomer such as hexene-1, it is valuable especially that 4-methylpentene and octene-1 are used to produce ethylene copolymer.These more senior alpha-olefins have quite high condensing temperature.Owing to it is believed that the liquid monomer in polymeric segment will cause agglomeration, caking even reactor is shut down, the throughput rate relevant with the speed of removing heat from polymeric segment is subjected to thinking needs maintenance to enter the highest strict restriction of monomeric condensing temperature of the boiling point of temperature height overall in being present in circulating current of the circulating current of reactor.

Even, also want carefully handled to be higher than the condensing temperature of recycle gas stream component to keep the resin bed temperature for the situation of in stirred reactor, carrying out polyreaction.

In order to remove heat to greatest extent, usually liquid spray is gone into or the injection of polymer bed in or on the polymer bed, in this liquid by the recycle gas stream that is exposed to heat in flash distillation immediately be gaseous phase.Realize limited amount auxiliary cooling with this technology because of the Joules-Thompson effect, but recycle gas stream has not been cooled to take place the degree of condensation.This method comprises elder generation usually and respectively circulating current partly is cooled to the liquid monomer storage, and then adds the step of the loaded down with trivial details and power consumption in the polymer bed or on the bed respectively.The example of this method can find in United States Patent (USP) 3254070,3300457,3652527 and 4012573.

Found afterwards, with people insist for a long time to exist liquid can cause agglomeration and reactor to shut down in recycle gas stream opposite, the full cycle gas stream might be cooled to the temperature that a large amount of monomer condensation occur fully, when these liquid with recycle gas stream equilibrated temperature under the fearful result that can not occur imagining when adding in the reactor.Cooling full cycle gas makes it generate the solution-air two-phase mixture under equilibrium temperature mutually, so that the liquid that can not that contains in gas stream flash-off of steam immediately.The substitute is because gas and the total material of liquid all enter polymeric segment under than the significantly low temperature of the possible temperature of thinking in the past, can produce a large amount of coolings.This method is for vapor phase process, particularly uses the productive rate of the polymkeric substance that the quite low comonomer of condensing temperature produces that remarkable improvement is arranged.This method is commonly referred to " condensation mode " operation, describes in detail in United States Patent (USP) 4543399 and 4588790, is introduced into as a reference here.In condensing mode operation, with the very rapid heating of gas-fluid two-phase mixture that enters polymeric segment and vaporization fully in short range very after entering polymeric segment.Even in the industrial reactor of maximum, all liquid is promptly vaporized after entering polymeric segment soon fully; Then the temperature of all gaseous state circulating currents is significantly raise by the exothermicity of polyreaction.Be considered to and in polymer bed, do not have liquid to exist owing to enter with the gas-liquid two-phase fluid in the reactor of effective constant back-mixing fluidized-bed and enter on the place than the rapider heating in the short range with the ability of condensing mode operation Gas-phase reactor than two-phase vapour-liquid body cycling stream.

We have found now that liquid monomer may reside in and have spreaded all in the whole polymer bed, condition is to be present in liquid monomer in the bed to be attracted on the solid particle material that is present in the bed or to be absorbed in the solid particle material, for example these granule materials are polymkeric substance of producing or the flow aid that is present in the bed, as long as enter (the same with condensing mode operation) quite a large amount of free liquid monomer existence in the short range on the polymeric segment place.This finds to make and might produce polymkeric substance with condensing temperature than produce the much higher monomer of conventional polyolefinic temperature in Gas-phase reactor in Gas-phase reactor.What comment on this discovery is that present making might be in Gas-phase reactor on the other hand, and with the monomer (as 1,3-butadiene, normal boiling point is-4.5 ℃) of easy condensation, the expectation monomer is under the liquid condition that exists produces polymkeric substance.In addition, thought in the past that it was irrealizable that vapor phase process is produced polymkeric substance with some monomers that are lower than medium condensing temperature or whole monomer, because be lower than in the whole dense monomer condition of polymeric segment temperature in condensing temperature, the polymkeric substance that each granules of catalyst is produced very little.This discovery of the present invention, the dense monomer that is higher than the polymeric segment temperature with condensing temperature that can economic implement is now produced polymkeric substance, be that liquid monomer spreads all in the whole polymer bed, condition is to be present in liquid monomer in the bed to be attracted on the solid particle material that is present in the polymer bed or to be absorbed in the solid particle material, and/or the polymeric articles that generates is present in the polymeric segment of reactor.The present invention might produce that think before various can not be with the polymkeric substance of continuous vapor phase process production with vapor phase process.

Another benefit of the present invention is that operation is used as liquid state and is dissolved in the monomer that exists in the polymkeric substance than with being not dissolved in the polymkeric substance, promptly only is present in the monomer in the gas phase, and the monomer concentration that obtains in the heart in active catalyst is bigger.This point will be used in the catalyst productivity maximum of producing polymkeric substance.Another benefit of the present invention is that heat passage in polymer beads is to remove heat by the monomer evaporation to improve.Do not dissolve with monomer, i.e. the operation that only is present in the gas phase is compared, and this will make the polymer beads more uniform temperature, homogeneous polymer performance more, and polymer buildup is few, and can improve the form of polymkeric substance.

Summary of the invention

The invention provides a kind of in agitated bed that polymeric segment is arranged or gas-phase fluidized-bed polymerizing reactor, the method for under polymeric reaction condition, producing polyhutadiene or polyisoprene, this method comprises:

(i) in the presence of a kind of inert particle material and optional at least a rare gas element, with divinyl or isoprene monomer join contain a kind of just in the described polymeric segment of growing polymer particles bed,

The polymerizing catalyst that (ii) will contain a kind of rare earth metal component, a kind of promotor and optional a kind of promotor, continuously or intermittently adds in the described polymeric segment;

(iii) continuously or a section ground draw off polyhutadiene or polyisoprene from described polymeric segment;

(iv) draw off unreacted divinyl or isoprene from described polymeric segment, compression and this rare gas element when cooling off described divinyl or isoprene and having rare gas element to exist keep the temperature of described polymeric segment to be lower than simultaneously and have monomeric dew point in the described polymeric segment.

Granular particle and goods with such particle manufacture also are provided.

The accompanying drawing summary

The fluidized bed reaction system that is particularly suitable for producing polyhutadiene or polyisoprene is illustrated in the accompanying drawings.

Detailed Description Of The Invention

Though the invention is not restricted to any particular type or plant type of polymerization, the present invention is particularly suitable for olefinic polyreaction, comprise monomer or the monomer of condensation easily such as the homopolymerization and the copolyreaction of divinyl or isoprene that boiling point is quite high.

Can carry out the higher monomer of the boiling point of olefinic polyreaction or the monomeric example of condensation is as follows easily:

A. higher alhpa olefin such as decylene-1, dodecylene-1, iso-butylene and vinylbenzene or the like of molecular weight.

B. diolefine such as hexadiene, vinyl cyclohexene, dicyclopentadiene, divinyl, isoprene, ethylidene norbornene or the like.

C. polar vinyl monomer such as vinyl cyanide, maleic acid ester, vinyl acetate, acrylate, methacrylic ester, vinyl trialkyl silane or the like.

The monomer of monomer that these boiling points are higher or condensation easily can use rare gas element to carry out homopolymerization as the gaseous component that is circulated in gas-fluid two-phase mixture in the reactor according to the present invention.The suitable inert substance that is used for this purpose comprise nitrogen, argon gas and temperature be lower than choose under the temperature that polymeric segment keeps, keep the gasiform stable hydrocarbon.

The monomer of monomer that boiling point is higher or easily condensation also can be lower with one or more boiling points monomer such as ethene, propylene and butylene and other higher monomer copolymerization of those boiling points above-mentioned, unique requirement is between the condensing temperature of lower monomer of the monomer of the higher or easy condensation of boiling point and at least a boiling point or inert substance significant difference to be arranged, and can make like this to have enough gas in the recycle gas stream so that carry out practicable, in stable condition operate continuously.

According to our invention, the monomer of monomer that boiling point is higher or condensation easily can directly add polymerization reaction zone or be written into polymerization reaction zone with circulating current.Or both combinations.In preferred embodiments, the temperature of this polymeric segment keeps below the condensing temperature of the monomer (as 1,3-butadiene or isoprene) that exists in the polymeric segment.In another embodiment, the condition of polymeric segment (as temperature, pressure, monomer concentration) is not exist basically in this polymeric segment not to be attracted on the solid particulate matter or not to be attracted to liquid in the solid particulate matter.In other words, the condition in the described polymeric segment is that the partial monosomy in this polymeric segment of maintenance is the liquid that is not adsorbed in the solid particulate matter.

The catalyzer that uses in this polymeric segment is a rare-earth metal catalyst.Enforcement of the present invention is not limited to any particular type rare-earth metal catalyst.Also in the present invention available at higher or the rare earth catalyst used in slurry polymerization, solution polymerization or the block polymerization of the monomer (as divinyl and isoprene) of condensation easily in the past.The rare-earth metal catalyst that uses in the inventive method can contain metal component, promotor and optional promotor.Do not use promotor in the catalyzer that preferred scheme is a polymerization process of the present invention.Metal component can be the mixture of rare earth compound or two or more rare earth compounds.Generally, the rare earth metal component of catalyzer is solubility or insolubility, carrier model or non-carrier model, perhaps is with or without the spray-dired of filler.In other words, this catalyzer can be added to polymeric segment with the prepolymer form that technology well known to those skilled in the art is produced.

When metal component was loaded on the carrier, typical carriers comprised: silicon-dioxide for example, carbon black, porous crosslinked polystyrene, cross linked porous polypropylene, aluminum oxide, perhaps magnesium chloride support material.In these solid support materials, the mixture of carbon black and silicon-dioxide, carbon black and silicon-dioxide is preferred solid support material.Typical silicon-dioxide or alumina supporter are solids, particle, and porous material is an inert to polymerization substantially.It is used with dry powder, and its median size is about 10～250 μ, preferably is about 30～100 μ; Surface-area is at least 200m ²/ g preferably is at least about 250m ²/ g; The aperture is at least about 100 , preferably is at least about 200 , and general, the carrier consumption is about 0.1～1.0 mmole rare earth metal/g carrier.In the preferred embodiment, two types of carbon blacks are as carrier.DARCO G-60 (pH=5 of water extraction) uses with dry powder, and its surface-area is 505m ²/ g, median size is 100 μ, porosity is 1.0～1.5cm ³/ g.NORIT A (pH=9-11 of water extraction) uses with dry powder, and its surface-area is 720m ²/ g, median size is 45～80 μ.

IIIB family atom sequence number in the periodic table of elements is that 57～103 any organic or inorganic compounds of selecting of metal all can use at this.The example of rare earth compound is cerium compound, lanthanum compound, praseodymium compound, gadolinium compound, neodymium compound.In these compounds, the preferably carboxylate salt of this metal, alcoholate, acetylacetonate, halogenide (comprising the ether of neodymium trichloride and the complex compound of alcohol) and alkyl derivative.Neodymium compound most preferably.For example neodymium compound can comprise the complex compound that neodymium naphthenate, neodymium octoate, neodymium trichloride, neodymium trichloride and tetrahydrofuran (THF) generate (NdCl for example ₃(THF) ₂) and the fluor-complex that generates with ethanol (NdCl for example ₃(EtOH) ₃), 2,2-diethyl caproic acid neodymium, 2 ethyl hexanoic acid neodymium, 2-ethyl neodymium octoate, 2,2-diethyl enanthic acid neodymium, allyl group dichloride neodymium, diallyl Neodymium trichloride and triallyl neodymium, neodecanoic acid neodymium, neodymium octoate or branched alkanecarboxylic acid neodymium are good especially.

Catalyst modifier and promotor are aluminum alkyl halide and trialkyl aluminium compound, for example:

Aluminum alkyl halide can be to contain formula AlR _{(3-a) Xa}Compound, R is the alkyl that contains the 1-14 carbon atom in the following formula; X is chlorine, bromine or iodine; A is 1 or 2; Perhaps can be to contain formula AlR _{(3-a) Xa}And AlR ₃The mixture of compound, the definition of the R in the following formula, X and a is the same.

The properties-correcting agent and the promotor example that contain halogen have aluminium diethyl monochloride, sesquialter ethylaluminium chloride, a chlorine di-n-butyl aluminium, a chloro-di-isobutyl aluminum, sesquialter methyl chloride aluminium, sesquialter chlorination aluminium isobutyl, a Chlorodimethyl aluminium, a chlorine di aluminium, dichloromethyl aluminium and dichloro aluminium isobutyl.Most preferably an aluminium diethyl monochloride (DEAC) and a chloro-di-isobutyl aluminum (DIBAC).

Trialkylaluminium can be following alkyl aluminium: triisobutyl aluminium, three hexyl aluminium, diisobutyl hexyl aluminium, isobutyl-dihexyl aluminium, trimethyl aluminium, triethyl aluminum (TEAL), tri-propyl aluminum, triisopropylaluminiuand, three n-butylaluminum, trioctylaluminum, three decyl aluminium, the basic aluminium of three (dodecanes) (derivative that comprises these aluminum compounds of partial hydrolysis also is known as aikyiaiurnirsoxan beta).

Can comprise with the preferred promoter that rare earth compound uses: the mixture of triethyl aluminum (TEAL), triisobutyl aluminium (TIBA), three hexyl aluminium (THAL), methylaluminoxane (MAO), modified methylaluminoxane (MMAO), trimethyl aluminium (TMA), dialkyl aluminum hydride or dialkyl aluminum hydride and trialkylaluminium.

As MAO or MMAO during as promotor, it can be a kind of of following material: (a) poly-(the alkyl aluminium oxide compound) of branched or ring oligomerisation, it contains general formula-(Al (R ) O)-repeating unit, R is hydrogen, contains the alkyl of 1～about 12 carbon atoms in the formula, or aryl, as substituted or unsubstituted phenyl or naphthyl; (b) general formula is (A ⁺) (BR ^*4 ^-) ion salt, A in the formula ⁺Be positively charged ion lewis acid or the Bronsted acid (protonic acid) that can remove alkyl, halogen or hydrogen from the transition metal component of catalyzer, B is a boron, R ^*Be substituted aromatic hydrocarbon, preferably cross fluorophenyl; (C) general formula is BR ^* ₃Boryl, R in the formula ^*As above stipulate.

Aikyiaiurnirsoxan beta is well-known in the art, comprises the linear alkyl aikyiaiurnirsoxan beta of oligomerisation, and structural formula is as follows: With oligomerisation cycloalkyl aikyiaiurnirsoxan beta, its structural formula is as follows:

S is 1-40, preferably 10-20 in the formula; P is 3-40, preferably 3-20; With R be the alkyl that contains the 1-12 carbon atom, preferably methyl or aryl are as substituted or not substituted phenyl or naphthyl.Modified methylaluminoxane is with technology C known to those skilled in the art ₂-C ₁₂Alkyl replaces with isobutyl-preferably that the methyl of 20-80 weight % generates.

Can comprise with the promotor that rare earth compound uses: lewis acid such as BCl ₃, AlCl ₃, ethyl aluminum dichloride, sesquialter ethylaluminium chloride, aluminium diethyl monochloride and these compounds other alkyl derivative.The Organohalogen compounds derivative of following formula:

X is Cl or Br in the following formula; R is H, alkyl, aryl, alkylaryl, chlorine or bromine alkyl, alkoxyl group or epoxy group(ing); R ' is an alkyl, aryl, H, Cl or Br; R " be alkyl, aryl, chlorine or bromine alkyl, chlorine or bromine aryl, vinyl, Cl or Br; Or R '+R " be oxygen or replacement or unsubstituted cycloalkyl.If R=R '=H, then R " be one of aromatic hydrocarbons.Alkyl can be substituted or unsubstituted, linear or branched and contain the alkyl of 1-18 carbon atom.

Representative instance as the Organohalogen compounds derivative of catalyst component of the present invention has benzoyl, propionyl, benzyl, benzylidene or tertiary butyl chlorination generation or bromide, methyl chloride manthanoate or bromine manthanoate, chlorodiphenyl methylmethane or chlorine triphenyl methane or the like.

The method that can prepare this catalyzer is that solid support material, metal component, promotor, suitable promotor are mixed in inert solvent or thinner with any order of addition(of ingredients).Generally, metal component is to be submerged on the carrier with known technology, for example will in the presence of solid support material, be dissolved in solvent or thinner such as hydrocarbon or the ether (comprising aliphatic, alicyclic or aromatics such as pentane, iso-pentane, hexane, hexanaphthene, benzene, toluene and tetrahydrofuran (THF)) by metallic compound, then with removing this solvent or thinner as distillation method under the decompression.On the other hand, the rare earth metal component can be dissolved in solvent or thinner such as hydrocarbon or the tetrahydrofuran (THF), the sprayable if desired dry catalyst precursor that comprises the external form fineness that does not almost have silicon-dioxide or other inoganic solids content that generates.

The preferred method of preparation catalyzer of the present invention comprises: the mixture of silica supports, carbon black carrier or these two kinds of carriers is flooded with containing rare earth compound.The weight range that is submerged in the metal on the carrier is 0.1-1.0 mole/g catalyzer.The Organoalkyl aluminum compound can be before impregnation stage, middle or add afterwards among hydrocarbon or oxidation solvent such as the THF.Catalyzer can be separated and be used as drying solid or as the slurry in the thinner.Catalyzer also can be made the no-load build, promptly simply contacts by metal and alkylaluminium cpd and generates solution or slurry directly feeds reactor.The ratio of Al in the catalyzer and metal can change between 0.5-5.0 at preparatory phase.When organic halogenide promotor or haloalkyl aluminium also fed reactor with promotor, organo-metallic was handled without aluminium and just can be used.As MAO during as promotor, what need is non-halogen thing source.

The preferred method of preparation rare earth catalyst of the present invention comprises following a few step: (A) handle mixture and ethyl aluminum dichloride or aluminium diethyl monochloride or two kinds of above-mentioned muriatic mixtures of silica supports, carbon black carrier or above-mentioned two kinds of carriers in hydrocarbon solvent, make it generate slurry; (B) add rare earth compound (as neodymium compound); (C) remove hydrocarbon solvent or thinner.Catalyzer in preferred the inventive method be (I) neodecanoic acid neodymium, neodymium octoate or the alkanecarboxylic acid neodymium that has side chain as metal component and Organoalkyl aluminum compound such as aluminium diethyl monochloride generate in thinner such as normal hexane or the hexanaphthene catalyzer and (II) carboxylic acid neodymium or alcoholization neodymium such as neodecanoic acid neodymium, neodymium octoate or branched alkanecarboxylic acid neodymium add silicon-dioxide as metal component by neodymium compound being dissolved in THF, remove the method for desolvating then and be immersed on the silicon-dioxide.The exsiccant solid is added to contains in aluminum alkyls muriate hydrocarbon (for example hexane) solution, remove then and desolvate.These catalyzer feed reactor with promotor, and this promotor is selected from following group: the mixture of diisobutyl alanate (DIBAH), triisobutyl aluminium or diisobutyl alanate and triisobutyl aluminium (TIBA).These catalyzer are preferred, because they almost do not have inductive phase and can keep catalytic activity for a long time.Above-mentioned I catalyzer can directly feed reactor.The method of formation reaction mixture prepares another kind of catalyzer by the following method: (i) neodymium compound of selecting from following group: carboxylic acid neodymium, alcoholization neodymium, methyl ethyl diketone neodymium and ethyl aluminum dichloride, aluminium diethyl monochloride or their mixture reaction; (ii) exist deposit on silica supports at solvent said mixture; (iii) remove said solvent; Add promotor (i) dialkyl aluminum hydride of selecting from following group again; (ii) trialkylaluminium; The (iii) mixture of dialkyl aluminum hydride and trialkylaluminium; (iv) methylaluminoxane; (v) modified methylaluminoxane; (the vi) mixture of above-claimed cpd.

The flow aid that uses among the present invention is to reactive chemistry inert inert particle material.This class flow aid example comprises carbon black, silicon-dioxide, clay and other analogous material such as talcum.Organic polymer materials also can be used as flow aid and uses.Carbon black and silicon-dioxide are preferred flow aid, most preferably carbon black.The carbon black materials initial particle that is used is about 10-100nm, and the median size of its state of aggregation (original texture) is about 0.1-10 μ.The sooty specific surface area is about 30-1500m ²/ g and carbon black are about 80-350cc/100g to the adsorptive capacity of dibutyl phthalate (DBP).

The silicon-dioxide that is used is amorphous state, and its initial particle is about 5-50nm, and the median size of its state of aggregation is about 0.1-10 μ.The median size of the agglomerate of silicon-dioxide is about 2-120 μ.The silicon-dioxide specific surface area that is used is about 50-500m ²/ g and it are about 100-400cc/100g to the adsorptive capacity of dibutyl phthalate (DBP).

Clay median size used in the present invention is about 0.01-and is about 10 μ and its specific surface area and is about 3-30m ²/ g.It is about 20-to the pick up the oil rate and is about 100g/100g.

Spendable organic polymer comprises polymkeric substance and the multipolymer and the polystyrene of ethene, propylene, butylene and other alpha-olefin, and they are granular or Powdered.The median size of these organic polymer materials is about 0.01-100 μ, preferably 0.01-10 μ.

Generally speaking, the usage quantity of flow aid generally depends on the type of materials used and the type of producing polyhutadiene and polyisoprene.When using carbon black and silicon-dioxide as flow aid, their usage quantity is about 0.3%-and is about 80% (weight meter), preferably be about 5%-and be about 60%, the most preferred 10%-of being about is about 45% (all to produce the weight of final product (polyhutadiene and polyisoprene)).When using clay and talcum as flow aid, its consumption is that the basis is about 0.3%-and is about 80% in the weight of producing final product, preferably is about 12%-75%.The consumption of use organic polymer materials is about 0.1%-and is about 50% (weight meter), preferably is about 0.1%-and is about 10% (weight meter), all to produce the weight of final polymer product.

Flow aid is in reactor head or feeding reactor near reactor head or in the bottom of reactor, perhaps flow aid is fed circulation line earlier and directly feeds reactor bottom.Preferred scheme is that flow aid is fed reactor from the top of reactor or near the top feeding reactor of reactor or on the top of fluidized-bed.Carry out moisture content and the oxygen of purifying treatment earlier before preferably flow aid being fed reactor to remove trace.This point can be finished above-mentioned purifying treatment with nitrogen purging and traditional method heating.Flow aid can add separately, perhaps adds with one or more divinylic monomers, perhaps adds with the non-supported catalyst of solubility.Preferably flow aid adds separately.

The fluidized-bed reaction system that is particularly suitable for producing polymer masses among the present invention describes in the accompanying drawings.In the icon, reactor 10 reduces section 14 by conversion zone 12 and speed and forms.

Usually, the height of conversion zone and diameter ratio can change in the scope at about 2.7: 1 to about 4.6: 1.Certainly this scope can change to bigger or less ratio, and depends on required turnout.The sectional area that speed reduces section 14 is generally about 2.6 to about 2.8 and multiply by in the scope of sectional area of conversion zone 12.

Conversion zone 12 comprises one just at the polymer beads of growing polymer particles, formation and the bed of minor amount of catalyst particles, and this is reached the fluidisation by the circulating fluid continuous flow of conversion zone to replenish the polymerisable of charging form and to change gaseous fraction.For keeping a viable fluidized-bed, the superficial gas velocity by fluidized-bed must surpass the required minimum flow velocity of fluidisation, preferably surpasses minimum flow velocity 0.1ft/sec at least.Usually superficial gas velocity is no more than 5.0ft/sec, and it is just enough generally to be not more than 2.5ft/sec.

Bed contains particle all the time preventing forming local " focus ", and holds back in the entire reaction section and distribute catalyzer.During beginning, reactor is full of the specific polymer beads of one deck usually.These particles can be identical or different with the type of polymer that will form.When not simultaneously, they draw off as the required polymer beads of firstling with formation.Finally, the fluidized-bed of required polymer beads replaces initial bed.

Partially or completely activatory precursor composition that uses in fluidized-bed and/or catalyzer preferably are stored in the storage tank 16 and use the storage material inert gasses, cover standby as nitrogen or argon gas.

Fluidisation flows into by fluid high-speed circulation and flows through bed and realizes, its flow velocity is about 150 times of about 50-of fluid replacement input speed usually.Fluidized-bed has each general appearance that moves the tight material of particulate, and this is that infiltration by the gas by bed causes.Pressure by bed fall be equal to or slightly greater than bed weight divided by sectional area.So it depends on the geometrical shape of reactor.

Fluid replacement adds in the bed at 18 places.The composition of fluid replacement is measured by gas analyzer 21.Measure the composition of cycling stream with gas analyzer 21, and regulate the composition that replenishes stream so that keep the gas composition of basicly stable state in the conversion zone.

Gas analyzer is the conventional gas analyser, and the composition of time-and-motion study cycling stream is with the ratio of easy maintenance incoming flow component according to a conventional method, and this instrument can have been bought by a lot of approach.Gas analyzer 21 is usually from reducing the sampling spot receiver gases between section 14 and the heat exchanger 24 in speed.

Boiling point monomer higher or easy condensation can add conversion zone in every way, comprise by nozzle (not expressing among the figure) and directly inject bed or be sprayed on the top of bed, can help to eliminate the dust that some are carried secretly by circulating current like this by the nozzle (not shown) that is positioned at a top.Quite little as monomer feed rate, heavier monomer can add conversion zone by being suspended in the circulating current that enters reactor bottom simply.

For guaranteeing complete fluidization, cycling stream and (when needing) part are replenished stream and are got back in the reactor at 26 places, bottom of bed by circulation line 22.Preferably on the feed back place, establish a gas distributor plate 28, to help to make a fluidisation.The reaction heat that the absorbing polymer reaction produced when cycling stream passed through bed.

The unreacted portion fluidization flow is removed from polymeric segment in bed, and the speed that it is passed through above the bed reduces section 14, in the bed that herein particle of carrying secretly can be fallen back.

After cycling stream is compressed, remove heat by heat exchange segment before in getting back to bed in compressor 30.Heat exchange segment is generally a heat exchanger 24, and it can be horizontal or vertical type.If desired, can use several heat exchangers to reduce the temperature of circulating current step by step.Also compressor might be located at the downstream of heat exchanger or the middle place between several heat exchanger.Cycling stream 26 is got back to the reactor and by gas distributor plate 28 and is entered fluidized-bed at the bottom of the reactor after cooling off.Gas baffling plate 32 can be installed in reactor inlet and sentence and stop contained polymer beads sedimentation to go out and agglomerate into solid block, prevent accumulation of fluid simultaneously at reactor bottom, also help to contain in the circulating current liquid process and do not contain between the liquid process and do not contain the liquid process and be easy to conversion between the liquid process with containing.The example that is suitable for the gas baffling plate of this purpose is at the equipment described in the United States Patent (USP) 4933149.

The bed temperature of selecting keeps basic constant temperature by constantly removing reaction heat under steady-state condition.The top that tangible thermograde is present in bed does not appear.The A thermograde can be present in about 6 to the 12 inches thick layers in bed bottom, this be the inlet fluid temperature with bed the temperature of residuum between gradient.

Operation plays an important role for reactor in good gas distribution.Contain in the fluidized-bed growing with established diffusing formula polymer beads and granules of catalyst.Since polymer beads be heat and have activity, must prevent its sedimentation, because if allow static material to exist, any active catalyst with which all can make reaction continue and cause fusing.So it is important making circulating fluid diffuse through bed with the speed that is enough to keep whole bed to be in fluidized state.

Gas distribution plate 28 is a kind of preferred embodiment that realize that good gas is distributed, and can be sieve, slotted plate, orifice plate, bubble-cap template or the like.The element of plate can be a fixed, or the movable plate described in the available United States Patent (USP) 3298792.No matter how it designs, and the particle at the bottom of it must make circulating fluid diffuse through bed is in fluidized state to keep bed, also should play the effect of support resin particle quiescent bed simultaneously when reactor shuts down.

The type of preferred gas distributor plate 28 be metal and have a hole of passing its surface arrangement.These bore dias are generally about 1/2 inch.These hole extend through plates.At the trilateral angle bar of each Kong Shangshe just like 36 marks, it is installed in above the plate 28.These angle bar play distributing fluids along the work of plate surface flow in order to avoid the solid section that remains in a standstill.They can prevent the polymer flow via hole when the bed sedimentation in addition.

Anyly also can be present in the cycling stream catalyzer and reactant inert fluid.If will use activator compound, preferably it is added the reactive system downstream of automatic heat-exchanger 24, in the case, activator can add the recycle system through pipeline 40 from material feeder 38.

In the invention process, service temperature can be approximately-100 ℃ to about 150 ℃ of scopes, and wherein to be about 20 ℃ to about 120 ℃ be preferred to temperature.

Fluidized-bed reactor can be at pressure up to about 1000psi, and preferred pressure is that about 100psi is to approximately operating under the 600psi condition.Operation helps heat exchange under elevated pressures, and reason is the increase along with pressure, and the gas volumetric heat capacity also increases.

Some or all activatory precursors form (as neodymium and alkyl halide) and/or catalyzer (below be referred to as catalyzer) with consume identical speed 42 injecting bed from dispenser panel 28 above.Polymer beads good mixing part preferably takes place and injects in catalyzer from bed.Somewhere injecting catalyst on distribution plate is so that operating fluidized bed gratifyingly polymerization reactor.Catalyzer is directly injected fluidized-bed help catalyzer in the whole bed uniformly distributing and be tending towards avoiding forming the high partial points of catalyst concn, this point can cause emerging of " focus ".Can cause excessive catalyst entrainment to advance in the circulation line in the face injecting reactor in bed catalyzer, and the generation polymerization may cause pipeline and heat exchanger to stop up in this pipeline.

Available various technology is with the carried catalyst injecting reactor.Yet, preferably with catalyzer being added in the reactor continuously as disclosed catalyzer feeder in United States Patent (USP) 3779712.Charging process for the catalyzer of solution, liquid or slurry state, typically according to the United States Patent (USP) 5 of Brady etc., 317,036 and application number 414,522 autographs of the U. S. application submitted to March 31 nineteen ninety-five feed in raw material for the open method of " method of control particle growth in the sticky polymers production process ".Here be introduced into as a reference.Catalyzer preferably with reactor wall at a distance of be 20% to 40% of reactor diameter, highly be the height of bed about 5% to about 30% place adding reactor.

To the catalyzer rare gas element,, be preferred for catalyzer is written in the bed as nitrogen or argon gas.

Polymer production rate depends on monomeric concentration in catalyzer injection speed and the reactor in the bed.Can be easily by simple adjustment catalyzer rate of injection control throughput rate.

Because any variation of catalyzer rate of injection will change speed of reaction, thereby the speed of generation heat also can change in the bed.The temperature that enters the cycling stream in the reactor is heightened or is turned down the rate variations that produces heat with suitable.This has just guaranteed that the temperature in the bed keeps constantly substantially.Certainly, be with any variation of temperature in the complete instrument detecting bed of fluidized-bed and cycling stream condenser system, so that the temperature that can make mechanical arm or conventional robot control system(RCS) can suitably regulate cycling stream.

Under given operational condition, fluidized-bed draws off as the product section bed to keep its height substantially constant by the formation speed by particulate polymer product.Directly relate to product formation speed owing to produce the speed of heat, if do not have or insignificant vaporizable liquid is present in the inlet fluid, the fluidic temperature of then measuring of passing reactor raise (the inlet fluid temperature is poor with the outlet fluid temperature (F.T.)) be illustrated in the formation speed of particulate polymers under the constant fluid flow velocity.

For the particulate polymer product that from reactor 10, draws off, need and preferably from product, isolate fluid and fluid is got back in the circulation line 22.There are a lot of methods to finish this process in the prior art.A vote as shown in drawings.So fluid and product leave reactor 10 and enter in the product discharge tank 46 through valve 48 at 44 places, valve 48 is designed to spherical valve, so that restriction reduces to minimum to mobile with it when opening.Be positioned at above the product discharge tank 46 and following valve is conventional valve 50,52, the latter is fit to provide a route that product is entered in the product surge tank 54.Product surge tank 54 has an emptying device, shown in pipeline 56, and an air inlet body device, shown in pipeline 58.Also establish a discharge valve 60 in the bottom of product surge tank 54, when it is in the position of unlatching, draw off product in order to carry storage.When valve 50 is in the open site, release of fluid is advanced surge tank 62.The fluid that comes out from surge tank 62 directly passes through gas-particulate filter 64, and process compressor 66 is after pipeline 68 enters circulation line 22 then.

In typical mode of operation, valve 48 is opened and valve 50,52 is in the closed position.Product and fluid enter product discharge tank 46.Valve 48 is closed and product is fallen in the product discharge tank 46.Open valve 50 then fluid is flowed in the surge tank 62 from product discharge tank 46, from then on it is pushed back in the circulation line 22 continuously.When valve 50 is closed then, open valve 52 all products in the product discharge tank 46 are flowed in the product surge tank 54.Valve-off 52 then.With the product rare gas element, preferred nitrogen is cleaned, and rare gas element enters product surge tank 54 by pipeline 58 and through pipeline 56 emptying.Product draws off and goes to store through pipeline 20 conveyings through valve 60 from product surge tank 54 then.

The specified time of valve switch is in proper order by using conventional procedure controller commonly known in the art to realize.In addition, valve by periodically with air-flow directly by valve and turn back to reactor and basic keep no agglomerated particle.

Another preferred product discharge system of alternative use be Robert G.Aronson in the application number of on July 28th, 1981 application be 287815, name is called open and claimed system in the U.S. Pat 4621952 of present approved of " fluidized-bed discharge system ".This system uses at least one (parallel) that comprise slurry tank and transfer pot to the jar arranged in series, and will send the somewhere of pushing up near fluidized-bed the reactor back to from the isolated gas phase of sedimentation tank deck.Described alternate preferred product discharge system has been removed the recompression pipeline 64,66,68 that needs as shown in the accompanying drawing system from.

Suitable emptying (not shown) system is housed in the fluidized-bed reactor makes bed emptying when starting and closing.Reactor does not need to use stirring and/or scrapes wall.The surface should be smooth for circulation line 22 and equipment wherein (compressor 30, heat exchanger 24), and avoid unnecessary obstacle so that do not hinder circulatory fluid flow or non-entrained particles.

Can be as follows according to the examples of polymers that the present invention produces:

Polyisoprene

Polystyrene

Polyhutadiene

SBR (divinyl and cinnamic copolymerization polymkeric substance)

ABS (vinyl cyanide, divinyl and cinnamic polymkeric substance)

Nitrile (multipolymer of divinyl and vinyl cyanide)

Butyl (multipolymer of iso-butylene and isoprene)

EPR (multipolymer of ethene and propylene)

EPDM (multipolymer of ethene and propylene and diene such as hexadiene, dicyclopentadiene or ethylidene norbornene)

Neoprene (chlorine is in rubber), Silicone (polydimethylsiloxane)

The multipolymer of ethene and vinyltrimethoxy silane

The multipolymer of ethene and one or more vinyl cyanide, maleic acid ester, vinyl acetate, vinylformic acid and methacrylic ester or the like.

When needs use one or more boiling points all quite high or easily condensation and be preferred for according to the temperature and pressure condition of gas-phase fluidized-bed production of the present invention under when producing polymkeric substance or multipolymer for the monomer of liquid, must use in the fluidized-bed of choosing maintenance gasiform inert substance under the polymeric condition.The rare gas element of suitable this purpose such as nitrogen, argon gas, neon, krypton gas or the like.Stable hydrocarbon such as ethane, propane, butane etc. and haloalkane such as freonll-11 also can use.Keeping other material of gasiform such as carbonic acid gas under the described conditions, needing only is inert and the performance that does not influence catalyzer basically, also can use.

Nitrogen because of its physical properties and relative low price, is preferably used as the medium of being produced polymkeric substance by the monomer of high boiling point or easily condensation such as vinylbenzene, vinylacetic acid, vinyl cyanide, methyl acrylate, methyl methacrylate or the like.It also is preferred keeping gasiform alkane such as ethane, propane under quite low temperature.

Prevent that the agglomerant routine techniques of reactor fouling and polymkeric substance can be used for implementing the present invention.The example of these technology has and adds small separated particulate material material preventing agglomeration, as described in United States Patent (USP) 4994534 and 5200477; The chemical substance that add to produce negative charge with the balance positive voltage or add the chemical substance that produces positive charge with in and negative potential, as describing in the United States Patent (USP) 4803251.Can also continuously or add the static charge of static inhibitor intermittence to prevent or to neutralize and produce.

Particulate state polyhutadiene of the present invention and/or polyisoprene elastomerics can adopt well-known equipment of those skilled in the art and method, and other elastomerics: as natural rubber, styrene-butadiene rubber(SBR), (halo) isoprene-isobutylene rubber, ethylene-propylene-elastoprene; Reinforcing filler is as carbon black, silicon-dioxide; Processing aid, anti degradant and vulcanizing agent mix.Be sure of that in these mixtures the polyhutadiene of primary granule shape or polyisoprene and other elastomerics ratio of mixture are more even with solid spherical tradition polyhutadiene or polyisoprene blended.Usually wish the elasticity mixture is mixed so that the mechanical property optimizing of sulfide.In addition, if with inert particle material of the present invention as in the polymerization process or still keep the auxiliary agent of granularity after the polymerization, the also accidental reinforcing filler (as carbon black) that becomes this mixture, but and another benefit may be that this fillers dispersed needed mixing time in this mixture is finished within a short period of time.This be because filler in the ordinary course of things, must be in mixing process before its is disperseed de-agglomerate at first, in this case, filler de-agglomerate and having been disperseed basically in participating in mixing process.

By the elastic mixture of particulate state polyhutadiene and/or polyisoprene or the preparation of their mixture, airtyred component especially suits to manufacture.Such as producing the automobile radial with those skilled in the art technique known, its proiprietary formula elastic mixture can be extruded by the forcing machine die head and produce the sheet sizing material that adhesive tape that tread, sidewall, outer guard ring infantees assembly that radial uses use or production resistance to air loss tire backing layer are used.Elastic mixture of other special prescription can roll on cord fabric or wirecord fabric fabric, to produce the curtain cloth reinforced layer sheet sizing material that cord body uses and the endless belt assembly of tire.This " life " tire or not tire curing manufacture method are that various assemblies (except endless belt and the tread) are assembled on the circular drum surface, radial dilatation again, these subassemblies of axial compression, so that produce the waist drum profile, then aforementioned endless belt and tread assembly are placed on the dolioform position on every side.The sulfuration of last crude tyre is to blow high pressure steam facing to enclosed heating aluminum die internal surface to carry out sulfurized.At the initial stage of fluid mapper process, when various elastic mixtures up to softening when easily flowing, exert pressure facing to the tire of mould inner surface and to produce the most accurate external form, tread pattern, sidewall literal and dingbat.In the later stage of sulfidation, heat-activation crosslinking reaction has taken place in the middle of various elastic mixtures, so that when mould is opened at last, it is crosslinked that every kind of mixture has all carried out, its crosslinking degree is optimized basically to the application of expecting.

When particulate state polyhutadiene of the present invention was used as the composition of tire mixture, it was given its wear resistance, antifatigue fracture especially, gives birth to low, the low-rolling-resistance of heat.Particulate state polyisoprene of the present invention is given tire assembling viscosity and green strength especially, and this point can make the assembling of green tire and load and unload easyly, gives its tear-resistant and cutting resistance simultaneously.Those skilled in the art also can be used for other moulded parts and extruded product with particulate state unrestricted flow polyhutadiene and the polyisoprene by vapor phase process production of the present invention with known technology.

The following examples be used to illustrate of the present invention.

Embodiment 1

In keeping 60 ℃ of homothermic gas phase agitated bed reactors, add 3.8lb carbon black powder and play the flow aid effect.And to this reactor adding 0.055lb triisobutyl aluminium (TIBA).Add 1.86lb 1,3-butadiene and enough nitrogen then, so that total reactor pressure reaches 315psia.Begin to add and be stated from the carried catalyst that the neodecanoic acid neodymium is formed on the silicon-dioxide of being handled by DEAC on a small quantity.Begin to add triisobutyl aluminium (TIBA) the promotor isopentane solution of a small amount of 10% (weight) simultaneously.Regulate charging and make Al: Nd is 7: 1 (mol ratio).During the 2.8h polyreaction, add into the divinyl total amount be 6.93lb, to replace the divinyl of polymeric or emptying.Leaving the divinyl total amount that dropping a hint on a small quantity of reactor take away between polymerization period is 0.95lb.In polyreaction at the end, catalyzer and promotor stop charging.The reactor pressure release is with the remaining divinyl of nitrogen blow-off.Give off polymkeric substance from reactor, this product does not contain because any agglomerate that agglomeration generates takes place.Antithesis, this product should be free-pouring, finely powdered particle powder.Open reactor and purification, to guarantee to reclaim all prods.Regulate carbon black initial charge amount, make it satisfy the requirement of reclaiming the solid phase prod total amount.The defective goods total amount of the butadiene polymer that exists in butadiene polymer that generates during the batch production and the parking period reactor is 5.35lb.Since add the divinyl total amount of reactor and be 8.79lb (=6.93+1.86) and generate polymkeric substance leave the divinyl of reactor and drop a hint continuously in the divinyl total amount be 6.30lb (=5.35+0.95), therefore, when polyreaction at the end, must have the 2.49lb divinylic monomer in the reactor.When pressure release and emptying, these monomers should be removed from reactor.

Reactor volume is 61.7l (or 2.18ft ³).In the time of 60 ℃, the 1,3-butadiene vapour pressure is 103psia.Therefore a large amount of divinyl that are present in the reactor with saturated air are 1.88lb.The not polymerization divinyl total amount that exists in the reactor during parking is 2.49lb, mostly is 1.88lb in the gas phase most, and remaining divinyl (0.61lb) must be present in the condensation mutually, such as being dissolved in the polymkeric substance.Therefore, reactor is to operate under the condensing temperature that is lower than the monomer existence.The liquid monomer 0.61lb that combines with the 5.35lb polymkeric substance, total amount is 11.4lb condensation divinylic monomer/100lb polyhutadiene.The existence of this liquid monomer does not cause the agglomeration of polymkeric substance in Gas-phase reactor.

The said products performance is as follows:

Carbon black N-650 analyzes: 41%;

Screen analysis median size: 0.025 inch;

Neodymium in the polymkeric substance: 490ppm

Visbreaking viscosity: 7.6dl/g

Cis 1-4:97.6%

Embodiment 2-7 derives by embodiment 1, but its variation sees the following form.

The preparation of the solution catalyst of embodiment 2 usefulness

12.32g neodecanoic acid neodymium hexane solution (Nd of 5.4 in the hexane (weight) %) is added in the flash distillation still of drying nitrogen purging, add 85ml exsiccant hexane again.The Et that adds 3.0ml 1.5M to this solution ₂AlCl (1.0egAl/Nd).Stir this mixture, and it is joined in the increasable steel cylinder of sealing, and add reactor with solution.

The preparation of the carried catalyst of example 3 usefulness

The dry hexane of 78.15g silicon-dioxide (600 ° of activation) and 250ml is joined in the flash distillation still that 500ml exsiccant nitrogen purging crosses.At leisure with the Et of 40ml 1.5M ₂AlCl adds in this still.This mixture was at room temperature stirred 60 minutes.This solution cooling is also added the branched alkanecarboxylic acid neodymium of 117g hexane solution at leisure.With this solution stirring 30 minutes, remove under the vacuum then and desolvate.Embodiment label 2345

Product: polyhutadiene polyhutadiene polyhutadiene polyhutadiene catalyzer describes being loaded in the catalyzer hexane in detail and is loaded in to be loaded in DEAC with DEAC and uses DEAC

The dioxy that the dioxy that the dioxy that the neodecanoic acid neodymium is handled is handled is handled

Change new on the band silicon on the band silicon on the silicon

There is the alkane of side chain that the alkane capric acid neodymium of side chain is arranged

In the iso-pentane in the iso-pentane in the iso-pentane in the alkylene dicarboxylate neodymium alkylene dicarboxylate neodymium promotor iso-pentane

10％TIBA 10％TIBA 1∶3DIBAH∶?10％DIBAH

TIBA method conditioned response temperature, (℃) 50 60 60 60 monomer dividing potential drops, (psia) 63 63 63 63 poly-6.8 5.8 6.4 4.5 compounds of producing, (lb) reaction times 5hr 2 hr 30min 2 hr 15min 3hr product analysis carbon black N-650 42 41 41 42

(%) screen analysis median size 0.076 0.017 0.018 0.013 (inch) promotor/21 7 9.5 11 catalyst charges ratio ^*132 288 179 415 Nd content (ppm) visbreaking viscosity 12.8 10.3 7.6 4.9 in the polymkeric substance

(dl/g)

Mooney viscosity 90ML (1+4@100 ℃) cis-1,4 99.1 97 96.2 97 content % ^*The mol ratio embodiment label 678 of the Al/ rare earth metal in the continuously feeding

Product: polyhutadiene polyhutadiene polyisoprene catalyzer describes in detail to be loaded in DEAC and is loaded in the dioxy that is loaded in the dioxy processing of handling with the dioxy of DEAC catalyst treatment with DEAC

Change new on the newization silicon on the newization silicon on the silicon

In the iso-pentane in the iso-pentane in the capric acid neodymium capric acid neodymium capric acid neodymium promotor iso-pentane

10%DIBAH 10%DIBAH 10%TIBA method conditioned response temperature, (℃) 60 60 65 monomer dividing potential drops, (psia) 63 63 35 poly-54 compounds of producing, (lb) reaction time 1 hr 45min 1 hr 35min 4 product analysis carbon black N-650 36 39 40, (%) screen analysis average grain diameter 0.027 0.030, (inch) co-catalyst/28 29 catalyst charges ratio^*150 200 Nd content (ppm) visbreaking viscosity 4.2 3.7 (dl/g) mooney viscosity 62 39 ML (1+4@100 ℃) cis-1,4,95.5 95.6 content % in the polymkeric substance ^*The mol ratio of the Al/ rare earth metal in the continuously feeding

Embodiment 9

In the inventive method embodiment, aforementioned fluidized bed reaction system is operated to produce polyhutadiene by following description.Produce polymkeric substance under following reaction conditions: 60 ℃ of temperature of reactor, total reactor pressure are 120psia.Divinylic monomer dividing potential drop in the reactor is 96psia, and the dividing potential drop of nitrogen is 24psia.The catalyst system that uses in the present embodiment is the neodecanoic acid neodymium, and it is loaded on the silicon-dioxide of handling with DEAC and triisobutyl aluminium is made promotor.Regulate the mol ratio Al of catalyzer and promotor charging: Nd is 60: 1.Under stable state, monomer feeds reactive system with 46.2lb/h speed.Dried N-650 carbon black feeds reactor with 20lb/h speed.Divinylic monomer leaves reactor with 13lb/h speed and enters in the emptying air-flow.After regulating sooty content, productive rate is the 30lb/h polymkeric substance.The mooney viscosity ML of product (1+4@100 ℃) 55.Other condition sees Table middle embodiment 9.

Under stable state, feed reactor continuously with 46.2lb/h divinyl total amount, as blowdown system gas or to leave the divinyl total amount that reactor calculates as polymkeric substance be 43lb/h.Unreacted liquid butadiene monomer must keep the difference of 3.2lb/h in leaving the polymkeric substance of reactor.Because the polymkeric substance and the polymkeric substance in the fluidized-bed of discharging are equivalent, so the polymkeric substance in the fluidized-bed must contain the liquid monomer of same ratio, promptly must have the 11.9lb liquid monomer to be dissolved in the 112lb polymer bed.

Reactor volume is 55ft ³When dividing potential drop is 96psia, the 44.4lb divinyl is arranged in the gas phase of reactor.Therefore in the reactor unpolymerized divinyl be 56.3lb (=44.4+11.9).In case if in the gas phase of this reactor be this divinyl entirely, its dividing potential drop is 125psia, its condensing temperature is 69 ℃.Therefore, the reactor under 60 ℃ is to operate under the monomer condensation temperature that exists in being lower than polymeric segment.Thereby the existence of this liquid monomer in the Gas-phase reactor can not cause the agglomeration of polymkeric substance.

Embodiment 10

In another embodiment of polymerization process of the present invention, except catalyzer was the neodecanoic acid neodymium that adds as hexane solution, other was according to embodiment 9 described carrying out.Table provides the more detailed situation of this embodiment.

Embodiment 11

In the inventive method embodiment, aforementioned fluidized bed reaction system is operated to produce polyisoprene by following description.Produce polymkeric substance under following reaction conditions: 65 ℃ of temperature of reactor, total reactor pressure are 100psia.Isoprene monomer dividing potential drop in the reactor is 30psia, and the dividing potential drop of nitrogen is 70psia.The catalyst system that uses in the present embodiment is the neodecanoic acid neodymium, and it is loaded on the silicon-dioxide of handling with DEAC and triisobutyl aluminium is made promotor.Regulate the mol ratio Al of catalyzer and promotor charging: Nd is 60: 1.Under stable state, monomer feeds reactive system with 35.4lb/h speed.Dried N-650 carbon black feeds reactor with 20lb/h speed.Isoprene monomer leaves reactor with 2lb/h speed and enters in the emptying air-flow.After regulating sooty content, productive rate is the 30lb/h polymkeric substance.The mooney viscosity ML of product (1+4@100 ℃) 55.Other condition sees Table middle embodiment 11.

Under stable state, feed reactor continuously with 35.4lb/h isoprene total amount, as blowdown system gas or to leave the isoprene total amount that reactor calculates as polymkeric substance be 32lb/h.The liquid isoprene monomer of unreacted must keep the difference of 3.4lb/h in leaving the polymkeric substance of reactor.Because the polymkeric substance and the polymkeric substance in the fluidized-bed of discharging are equivalent, so the polymkeric substance in the fluidized-bed must contain the liquid monomer of same ratio, promptly must have the 12.7lb liquid monomer to be dissolved in the 112lb polymer bed.

Reactor volume is 55ft ³When dividing potential drop is 30psia, the 17.2lb isoprene is arranged in the gas phase of reactor.Therefore in the reactor unpolymerized isoprene be 29.9lb (=17.2+12.7).In case if in the gas phase of this reactor be this isoprene entirely, its dividing potential drop is 54.5psia, its condensing temperature is 80 ℃.Therefore, the reactor under 65 ℃ is to operate under the monomer condensation temperature that exists in being lower than polymeric segment.Thereby the existence of this liquid monomer in the Gas-phase reactor can not cause the agglomeration of polymkeric substance.

Embodiment 12

In another embodiment of polymerization process of the present invention, except catalyzer was the neodecanoic acid neodymium that adds as hexane solution, other was according to embodiment 11 described carrying out.Table provides the more detailed situation of this embodiment.Embodiment label 9 10 11 12

Product: polybutadiene polybutadiene polyisoprene polyisoprene reaction condition temperature (℃) the long-pending 55 55 55 55 (ft of 60 60 65 65 gross pressures (psia), 120 120 100 100 surface velocity 1.75 1.75 1.75 1.75 (ft/s) throughput rate 30 30 30 30 (lb/h) overall reactor³) conversion zone volume 7.5 7.5 7.5 7.5 (ft ³) 1.17 1.17 1.17 1.17 weights of 7.0 7.0 7.0 7.0 diameters of the height of bed (ft) (ft) (lbs), 112 112 112 112 recycle gas composition (mole%): N ₂20 20 70 70 divinyl 80 80--isoprene--30 30 catalyzer: be loaded in being loaded in DEAC in hexane in hexane with DEAC

The dioxy neodecanoic acid neodymium that the dioxy neodecanoic acid neodymium of handling is handled

Change new on the newization silicon on the silicon

Capric acid neodymium capric acid neodymium promotor: TIBA TIBA TIBA TIBA monomer feed speed, (lb/h) divinyl 46.2 46.2--isoprene--35.4 35.4 total monomer emptying speed 13 13 22, (lb/h) polymkeric substance is formed, (wt%): divinyl 100 100--isoprene--100 100

Claims (38)

1. One kind in agitated bed with polymeric segment or gas fluidised bed polymerisation reactor, under polymeric reaction condition, produce the method for polyhutadiene or polyisoprene, this method comprises:

   (i) in the presence of a kind of inert particle material and optional at least a rare gas element, with divinyl or isoprene monomer join contain a kind of just in the described polymeric segment of growing polymer particles bed;

   (ii) with a kind of polymerizing catalyst that contains the rare earth metal component, a kind of promotor and optional a kind of promotor continuously or intermittently add in the described polymeric segment;

   (iii) polyhutadiene or polyisoprene product are drawn off from described polymeric segment continuously or intermittently;

   (iv) unreacted divinyl or isoprene are drawn off from described polymeric segment, compression and the described divinyl of condensation or isoprene and this rare gas element when rare gas element exists keep the temperature of described polymeric segment to be lower than simultaneously and are present in monomeric dew point in the described polymeric segment.
2. 2. according to the process of claim 1 wherein that the temperature of described polymeric segment keeps below the monomeric condensing temperature that is present in described polymeric segment.
3. 3. according to the process of claim 1 wherein that the condition of described polymeric segment is not exist basically not to be attracted on the solid particulate matter or not to be adsorbed to liquid in the solid particulate matter in described polymeric segment.
4. 4. according to the process of claim 1 wherein that the condition of described polymeric segment is that partial monosomy is the liquid that is not inhaled in the solid particulate matter at least.
5. 5. according to the process of claim 1 wherein that described inert particle material is to be selected from carbon black, silicon-dioxide, clay, talcum and composition thereof.
6. 6. according to the method for claim 5, wherein said inert particle material is a carbon black, silicon-dioxide or their mixture.
7. 7. according to the process of claim 1 wherein that the rare earth metal component is compound that is selected from cerium, lanthanum, praseodymium, gadolinium, neodymium and composition thereof.
8. 8. according to the method for claim 7, wherein promotor is to be selected from triethyl aluminum, triisobutyl aluminium, three hexyl aluminium, methylaluminoxane, modified methylaluminoxane, trimethyl aluminium, the mixture of dialkyl aluminum hydride and trialkylaluminium and their mixture; Have the promotor of following chemical formula with choosing any one kind of them:

   X is Cl or Br in the formula; R is H, alkyl, aryl, alkylaryl, chloro alkyl or bromo alkyl, alkoxyl group or epoxy group(ing); R ' is an alkyl, aryl, H, Cl or Br; R " be alkyl, aryl, chloro or bromo alkyl, chloro or bromo aryl, vinyl, Cl or Br; Or R '+R " be oxygen, or saturated cycloalkyl or undersaturated cycloalkyl.
9. 9. according to the method for claim 7, wherein rare-earth metal catalyst is the compound that contains neodymium.
10. 10. according to the method for claim 7, wherein rare-earth metal catalyst is the carboxylic acid neodymium, the alcoholate of neodymium, the halogenide of neodymium, or methyl ethyl diketone neodymium.
11. 11. according to the method for claim 9, the compound that wherein contains neodymium is selected from the capric acid neodymium, neodymium octoate, and a kind of have the alkanecarboxylic acid neodymium of side chain and their mixture.
12. 12. according to the process of claim 1 wherein described method be a kind of be used for controlling under the reagent of described reactor static degree or the condition that equipment exists carry out.
13. 13. according to the process of claim 1 wherein that the static voltage in the described reactor keeps neutral substantially.
14. 14. according to the process of claim 1 wherein that described rare gas element is a nitrogen.
15. 15. according to the process of claim 1 wherein that described divinyl or isoprene add continuously.
16. 16. according to the process of claim 1 wherein that inert particle material is that carbon black or silicon-dioxide and catalyzer are

    (A) a kind of reaction mixture, it contains the carboxylic acid neodymium by being selected from, a kind of neodymium compound of the alcoholate of neodymium and methyl ethyl diketone neodymium group and dichloro one aluminium triethyl, an aluminium diethyl monochloride or an ethyl contact with diethyl mixture
17. 20. according to the process of claim 1 wherein that inert particle material is that carbon black or silicon-dioxide and catalyzer are

    (A) a kind of reaction mixture, its generation comprises: (i) alcoholate with carboxylic acid neodymium or neodymium is dissolved in a kind of solvent, (ii) add silicon-dioxide, remove (iii) that said solvent obtains a kind of drying solid in (i), (iv) this drying solid is joined in the solution that contains a kind of aluminum alkyls muriate and a kind of solvent, (solvent in v) removing (iv), wherein (i) and solvent (iv) can be identical or different; With

    (B) a kind of promotor, it is selected from contains (i) dialkyl aluminum hydride, (ii) trialkylaluminium, the (iii) mixture of dialkyl aluminum hydride and trialkylaluminium, (iv) methylaluminoxane, (v) modified methylaluminoxane and (vi) their mixture
18. 21. according to the method for claim 20, wherein reaction mixture is that carboxylic acid neodymium and aluminium diethyl monochloride reaction generate; With promotor be diisobutyl alanate or diisobutyl alanate and triisobutyl aluminium.
19. 22. according to the process of claim 1 wherein that inert particle material is that carbon black or silicon-dioxide and catalyzer are

    (A) a kind of reaction mixture, it contains the carboxylic acid neodymium by being selected from, and the compound of a kind of neodymium of the group of the alcoholate of neodymium and methyl ethyl diketone neodymium and a kind of compound that is present in the organic aluminum halide in the solvent generate; With

    (B) a kind of promotor is selected from and contains (i) dialkyl aluminum hydride, (ii) triethyl aluminum, the (iii) mixture of dialkyl aluminum hydride and triethyl aluminum, (iv) methylaluminoxane, (v) modified methylaluminoxane and (vi) their mixture.
20. 23. according to the method for claim 22, wherein reaction mixture is to be generated by carboxylic acid neodymium and the aluminium diethyl monochloride compound in normal hexane or hexanaphthene; With promotor be diisobutyl alanate or diisobutyl alanate and triisobutyl aluminium.
21. 24. according to the process of claim 1 wherein that the rare earth metal component of described polymerizing catalyst is spray-dired.
22. 25. according to the process of claim 1 wherein that described polymerizing catalyst adds in the polymeric segment as a kind of prepolymer.
23. 26. according to the process of claim 1 wherein that the described polymerizing catalyst that joins polymeric segment is a kind of liquid, solution or slurry.
24. 27. particulate state polyhutadiene or the polyisoprene produced according to the method for claim 1.
25. 28. granular polyhutadiene or polyisoprene.
26. 29. with the polyhutadiene of claim 1 or the tire of polyisoprene production.
27. 30. tire with particulate state polyhutadiene or polyisoprene production.
28. 31. with the polyhutadiene of claim 1 or the moulded parts of polyisoprene production.
29. 32. moulded parts with particulate state polyhutadiene or polyisoprene production.
30. 33. with the polyhutadiene of claim 1 or the extruded product of polyisoprene production.
31. 34. extruded product with particulate state polyhutadiene or polyisoprene production
32. 35. according to the preparation method of the rare-earth metal catalyst of claim 1, this method comprises: (i) generate a kind of slurry with silica supports, carbon black support or their mixed carrier of the compound dipping that contains rare earth metal and the compound of Organoalkyl aluminium in solvent or aluminum alkyl halide; (ii) remove said solvent.
33. 36. according to the preparation method of the rare-earth metal catalyst of claim 35, this method comprises that sequential steps is as follows:

    (i) silica supports, carbon black support or their mixed carrier are handled with aluminium diethyl monochloride in a kind of solvent, generate a kind of slurry;

    (ii) add a kind of neodymium compound

    (iii) remove said solvent
34. 37. according to the preparation method of the rare-earth metal catalyst of claim 1, this method comprises that (i) is used in and contains rare earth compound impregnation of silica carrier in the solvent, carbon black support, or their mixed carrier generates a kind of slurry; (ii) remove said solvent and obtain a kind of drying solid; (iii) said drying solid and Organoalkyl aluminium, aluminum alkyl halide or their mixture reaction in solvent generate a kind of slurry; (iv) remove said solvent.
35. 38. according to the preparation method of claim 37 rare earth catalyst, this method comprises that sequential steps is as follows

    (i) silica supports or carbon black support are used in neodymium compound dipping in the solvent, generate a kind of slurry;

    (ii) remove (i) said solvent and obtain drying solid;

    (iii) said drying solid and the reaction of the aluminium diethyl monochloride in solvent generate slurry; With

    Said solvent in (iv) removing (iii),

    Wherein (i) and (iii) middle solvent can be identical or different.
36. 39. according to the method for claim 35, the compound that wherein contains rare earth is the neodecanoic acid neodymium, or has the alkanecarboxylic acid neodymium of side chain, the Organoalkyl aluminum compound is that aluminium diethyl monochloride and solvent are normal hexane or hexanaphthene.
37. 40. catalyst system comprises:

    (A) reaction mixture is generated by carboxylic acid neodymium and ethyl aluminum dichloride or aluminium diethyl monochloride reaction, this mixture is deposited on the silica supports containing in the presence of the 3-6 carbon atom hydrocarbon, generates a kind of slurry, and removes said hydrocarbon; With

    (B) promotor is selected from the diisobutyl alanate, triisobutyl aluminium and their mixture.
38. 41. catalyst system comprises:

    (A) handle silica supports with ethyl aluminum dichloride or aluminium diethyl monochloride and generate a kind of reaction mixture, in the presence of solvent, add a kind of carboxylic acid neodymium and generate a kind of slurry and remove said hydrocarbon; With

Images