WO1997014722A1 - Initiateur organique multifonctionnel a metal alcalin, sa synthese, des polymeres anioniques en etoile obtenus par polymerisation anionique et leur preparation - Google Patents
Initiateur organique multifonctionnel a metal alcalin, sa synthese, des polymeres anioniques en etoile obtenus par polymerisation anionique et leur preparation Download PDFInfo
- Publication number
- WO1997014722A1 WO1997014722A1 PCT/CN1996/000090 CN9600090W WO9714722A1 WO 1997014722 A1 WO1997014722 A1 WO 1997014722A1 CN 9600090 W CN9600090 W CN 9600090W WO 9714722 A1 WO9714722 A1 WO 9714722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- initiator
- monomer
- alkali metal
- reaction
- group
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
- C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
- C08F297/042—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes using a polyfunctional initiator
Definitions
- the present invention relates to a polyfunctional group for synthesizing various star polymers having a metal initiator and a synthesis method thereof, and an olefin anionic polymerization star polymer prepared by using the initiator and a method for preparing the polymer.
- the present invention relates to a polyfunctional * us3 ⁇ 4 metal initiator having an anionic homopolymerization or copolymerization of a monoolefin and / or diene solution and a method for synthesizing the same, and relates to the polymerization of monoolefin and / or diene polymerization initiated by the initiator Methods and polymerization products.
- (SB) réelleR coupling star-shaped styrene-isoprene block copolymer ((SI) n R) to coupling star-shaped random solution polystyrene butadiene (S-SBR), low cis Polybutadiene (LSBR), medium vinyl polybutadiene (MVBR), high vinyl polybutadiene (HVBR), and even the latest styrene-isoprene-butadiene rubber (S- SIBR), etc.
- S-SBR star-shaped random solution polystyrene butadiene
- LSBR low cis Polybutadiene
- MVBR medium vinyl polybutadiene
- HVBR high vinyl polybutadiene
- S- SIBR latest styrene-isoprene-butadiene rubber
- Organic initiators are widely used in anionic polymerization. According to the number of active centers contained in each molecule after initiation, they can be divided into single initiators, such as RLi; double lithium initiators, such as lithium naphthalene; and polyfunctional organic lithium initiators. Agents (the number of active centers per molecule> 2).
- Polyfunctional organolithium initiators are mainly used in the synthesis of star polymers. Compared with linear polymers, star polymers have their own characteristics. After tire making, it has better comprehensive mechanical properties, which are mainly manifested in low rolling resistance and good wet skid resistance. It is an energy-saving rubber. It is also similar to the star-shaped vinyl polybutadiene in its processing properties and resistance. Cold flow is significantly better than linear products, and for thermoplastic elastomers, star-shaped SBS has higher Mooney viscosity, tensile strength, and heat resistance than linear SBS. In addition, it has special Star polymers with end groups are also widely used in adhesives, liquid rubber, etc.
- this initiator should be rarely used in practice, and is generally used for the synthesis of star block copolymers.
- the initiator is obtained by the addition of an alkyl group with divinylarene.
- the functionality of the initiator is affected by the type of RLi (n-BuLi, s-BuLi, t-BuLi), the position of the DVB substituent (p-DVB), and RLi and DVB Controlled by the feed ratio.
- polyvinylarene compounds 1, 2, 4-trivinylbenzene, 1, 3, 5-trivinylnaphthalene, etc .
- Polyethylene Base compounds methyldivinyl phosphorus, trivinyl, etc .
- polyvinyl silicon total methyltrivinyl, diethyldiethylfluorinated silicon, etc. Patents in this area include
- Multi-functional organic initiators are prepared by using RLi as the initial initiator in aromatics or alkanes. Related patents have also been reported, such as:
- Polyfunctional organolithium initiators such as USP4091198 can also be prepared by using RLi to initiate a small amount of diene via a mixture with DVB.
- a polyfunctional organolithium initiator can also be prepared.
- This oligomer can be a polydiene D.D.PaU50,469;
- DDPat.158,781 can also be a "micro rubber core" with multiple double bonds formed by copolymerization of wrong ethylene and DVB.
- the functionality of the initiator is mainly affected by the molecular weight of the active polymer used, the smaller the molecular weight, The higher the initiator's functionality, the general functionality ranges from 3 to 100.
- USP4 742 124 describes an organic The polyfunctional initiator is subjected to a solution copolymerization reaction, and then coupled with a material including R 2 S n X 2 to prepare a co-dadiene-vinyl substituted aromatic hydrocarbon random copolymer, and is formulated to contain the copolymer at least A 20% composition provides a rubber composition for improving tire performance.
- the invention relates to an initiator for preparing various star polymers by anionic polymerization, and the general formula is M a (RMe) b
- the M element is selected from the group consisting of Sn, Ti, Al, Si, and / or B; preferably Sn and / or Si; R is a hydrocarbon group having 8 to 100 carbon atoms, preferably 20 to 60 fluorene atoms;
- Me is an alkali metal, preferably selected from Na and / or Li
- a 0.7 ⁇ 3, preferably 1 ⁇ 3,
- the invention also relates to a method for preparing the above-mentioned initiator.
- the method includes the following steps: In the presence of an organic alkali metal initial initiator in an amount of 0.2 to 2 moles / 100 grams of monomer, the first step is to initiate the diene in a hydrocarbon solvent. And / or mono-olefin monomers to form a hydrocarbon group with an active center at the end of the molecular chain having 8-100 carbon atoms, preferably 20 to 60; the second step is to add a hydrocarbon group with multiple reactive groups Compound MXj or MR'Xj reacts with the active site.
- A is the number of active centers formed in the first reaction
- B is the total number of groups that can react with the active center when added to MXj or MR'Xw, and a polyfunctional group has a metal initiator M a (RMe) b ,
- M is selected from Sn, Ti, Al, Si and / or B;
- X is selected from F, C1 and / or Br;
- R ' is a base of d- ⁇ : 8 ;
- the value of j is equal to the price of the M element used
- MXj escapes from SnCl 4 , TiCl 4 , AlCl 3 , BF 3 and / or SiCl 4; MXj is preferably SnCl 4 and / or SiC;
- MR'Xj is selected from SnR'Cl 3 and / or SiR'CI 3 , MR'Xj., Preferably SnCH 3 Cl 3 and / or SiCH 3 Cl 3 .
- the present invention also relates to an anionic polymerized star polymer.
- the polymer is made from a mono-olefin and / or a di-olefin as a monomer raw material and is polymerized by anionic solution in the presence of an anionic polyfunctional group having a tM3 ⁇ 4 metal initiator.
- the invention also relates to a method for preparing a star polymer, which method comprises subjecting a mono-olefin and / or a di-olefin to anionic solution polymerization in a hydrocarbon solvent in the presence of a polyfunctional metal initiator having a ⁇ 3 ⁇ 4 metal initiator.
- the agent is a compound of the general formula M a (RMe) b ,
- M element escapes from Sn, Ti, Al, Si and / or B;
- R is a hydrocarbon group having 8 to 100 carbon atoms, preferably 20 to 60;
- Me is an alkali metal, preferably Na and / or Li;
- a 0.7 ⁇ 3, preferably 1 ⁇ 3;
- b 2.5-6.5, preferably 3 ⁇ 5.
- the object of the present invention is to provide a new type of polyfunctional group fluorinated metal initiator, which contains heteroatoms other than carbon, hydrogen, and alkali metal, and the initiator is used for synthesis
- Various star polymers have the characteristics of low cost, simple process, low energy consumption, and good product performance.
- Another object of the present invention is to provide a method for synthesizing the above-mentioned polyfunctional fluorene metal initiator, so that the synthesis method It has the characteristics of simple process, and the functionality can be easily adjusted according to needs.
- Yet another object of the present invention is to provide a method for anionic polymerization using the polyfunctional organic alkali metal initiator, and to provide a polymerization product produced by this method.
- Figure 1 is a GPC diagram of the molecular weight distribution of the star polymer synthesized in the present invention
- Figures 2 to 6 are made using the coupled S-SBR products of Shell, JSR, Asahi Kasei, and Ruiwon respectively GPC spectrum of molecular weight distribution.
- star polymer refers to a polymer with a radial structure of a plurality of polymer chain arms extending in the radial direction in the molecule. Star polymers are Difference, and has its own different characteristics.
- linear S-SBR Soluble SBR
- star-shaped S_SBR is linked by chemical bonds at the ends of the molecular chain, and the number of freely movable molecular chain ends in the macromolecular network after tritiation is greatly reduced, thereby reducing rolling resistance.
- star-shaped S-SBR because of its high 1,2-structure content, it maintains good wet skid resistance. Compared with linear S-SBR, it is a new type of "energy-saving rubber".
- LCBR polybutadiene
- MVBR polybutadiene
- HVBR polybutadiene
- the processing performance and cold flow resistance of the star-shaped products are significantly better than the linear products. It is also a kind of low rolling resistance and wet skid resistance. Good "energy-saving rubber”.
- star-shaped LCBR used in HIPS synthesis, can achieve high ML, low solution viscosity. The best match, the product is a high gloss HIPS (high impact polystyrene) that can replace ABS.
- the star structure also shows better characteristics than the linear structure.
- the star structure has higher Mooney viscosity, tensile strength, and better heat resistance than linear structure products.
- star polymers with special end groups are also widely used in adhesives, liquid rubber, etc.
- the present inventors have conducted many years of research and a large number of experiments in this technical field, and have finally completed the present invention, creating a method that does not require a coupling step and can control And adjust the functionality to achieve a smooth and efficient synthesis of star polymer synthesis route and widely applicable initiators, and thus made a new high-performance star polymer.
- an initiator widely applicable to anionic polymerization.
- the initiator provided by the present invention for preparing various star polymers for anionic polymerization is composed of a hetero atom M and a hydrocarbon-based metal-reducing moiety ( RMe) compounds of the general formula:
- the hetero atom M is an element selected from Sn, Ti, Al, Si, and / or B;
- R is a hydrocarbon group having 8 to 100 carbon atoms, preferably 20 to 60, formed by the reaction of a mono-olefin and / or a di-olefin;
- the initiator is synthesized in two steps according to the following reaction formula:
- a two-step synthesis method for providing the initiator is also an aspect of the present invention.
- the synthesis method includes: using a metal as an initial initiator, and the initial initiator is added in an amount of 0.2 to 2 moles per 100 grams of the monomer, preferably per 100 grams of the monomer. 0.5 to 1.5 moles of monomers; the first step is to induce the diene and / or monoolefin monomer to form a hydrocarbon group with an active center at the molecular chain end in a hydrocarbon solvent;
- the reactive group compound MXj or MR'X reacts with the active center.
- the amount of MXj or MR'Xj.i added should be such that
- a / B 1.5-3; preferably 1.5 ⁇ 2.5
- A is the number of active centers formed in the first reaction
- B is the total number of groups that can react with the active center when added to MXj or MR'X, where: M is selected from Sn, Ti, Al, Si and / or B;
- X is selected from F, C1 and / or Br;
- the value of j is equal to the price of the M element used
- R ' is d-(: 8 alkyl
- the final reaction product is a polyfunctional organic alkali metal initiator, M a (RMe) b .
- the organic alkali metal initial initiator [ArH] Me + can be synthesized on-site, or the finished product can be used.
- a finished initiator such as lithium naphthalene, naphthalene Na, anthracene lithium, anthracene sodium, etc., especially lithium naphthalene and sodium sulfonium are the preferred organic metal reducing initiators.
- the monomers used in this reaction include dioxane and / or monoolefins; the diolefins may be butadiene, isoprene and their derivatives; and the monoolefins may be vinyl-based monomers such as styrene , ⁇ -methylstyrene, etc. and acrylic vinegar, methacrylic vinegar, etc.
- these mono-olefins and di-olefins are not strictly limited, and the selection range is very wide. This choice is for those of ordinary skill in the art. Language is not difficult.
- the amount of monomer The amount of monomer used in most anionic polymerization is close, generally based on the total weight of the reaction system, the monomer content is about 1 ⁇ 10%, preferably about 2-8%.
- the control of the initial amount of organic metal reducing initiator can depend on the required molecular weight of the hydrocarbon group and the requirements of the microstructure of the final polymer. A large amount of initiator will result in a small molecular weight of the formed hydrocarbon group, while a small amount of initiator will result in a formed hydrocarbon group. Large molecular weight.
- the amount of the organic metal reducing initial initiator is based on 100 grams of monomer, the alkali metal content is preferably about 0.2-2 moles, preferably about 0.5-1.5 moles.
- the synthetic reaction of the reaction formula (1) is a typical anionic chemical reaction, and the solvent used therein can be various solvents commonly used in such reactions, such as hydrocarbon solvents, including benzene, toluene, cyclohexane, hexane, Pentane, heptane, raffinate, etc. can be used singly or as a mixed solvent in two or more types.
- the amount is generally 90-99% by weight of the reaction system, especially about 92-98%. Better.
- the reaction is generally irreversible. Under appropriate temperature and pressure conditions, such as 5-50 X and atmospheric pressure, it can be completed in a short time, such as 15-30 minutes, that is, the reaction is initiated in a hydrocarbon solvent.
- the olefin and / or mono-olefin monomers form a low-molecular-weight oligomer with an active center at the molecular chain end.
- the reaction time is not strictly limited, and it can also take several hours, even days, the reaction system is still active. There can also be no obvious demarcation between the two reactions in the first step and the second step, and the two can be performed under the same reaction conditions.
- the second step is to add MXj or
- M represents elements such as Sn, Ti, Al, Si and / or B;
- X is halogen F, CI, Br and / or I;
- R ′ is an alkyl group having 1 to 8 carbon atoms.
- the reactant is a heteroatom-containing compound containing three to four groups that can react with the active center, and may be, for example, SnCl 4 , TiC, A1C1 3 , BF 3, SiCl 4, SnBr 4, preferably SnCl 4 and / or SiCl 4, and SnR'Cl 3 and / or SiR'C, preferably from SnCH 3 Cl 3, SiCH 3 CI 3, which is preferably SnCl 4.
- the feed can be added all at once, or several times or continuously over a period of time. It can be added separately or mixed with solvents.
- the reaction time is 0.5-2 hours, but there is no strict limit.
- the present invention triggers The type and number of heteroatoms M in the agent (a value) and the functionality of the active alkali metal (b value) can be conveniently adjusted by changing the type of the reactant M and controlling the ratio between the reactants.
- the multifunctionality The degree b value is generally controlled between 3 and 5.
- the monomer is succinimidine
- the solvent is benzene
- the first reaction is performed at a temperature of 5-50 X for 0.5-2 hours, and then Heteroatom compound SnCl 4 is added , and the reaction is continued at a temperature of 5-50 for 0.5 to 2 hours. After the reaction is completed, it is stored under nitrogen protection for use. This completes the preparation of the initiator of the present invention.
- the reaction product is Sn a (R " Li) b , where a is 1-3 and b is
- R " is a hydrocarbon group having 30 to 50 carbon atoms.
- the functionality (b value) of the polyfunctional metal initiator in the present invention can be controlled by controlling the number of active centers A value formed in the first step of the reaction system with the active center added in the second step.
- the ratio of the total number of heteroatom groups B is adjusted.
- an experiment is performed with organolithium and SnCl 4. There is a corresponding relationship between the two as shown in Table 1 below.
- the calculation method of the active alkali metal functionality of the initiator of the present invention is to determine the molecular weight of the synthesized polyfunctional metal initiator with a membrane osmotic pressure method, and then calculate it according to the following formula:
- [Me] is the total remaining active minus metals after the reaction in the system
- W is the monomer feed amount
- Mn (measured value) is the number-average molecular weight of the measured initiator.
- a star polymer prepared by anionic solution polymerization of diolefins and / or monoolefins using the above-mentioned polyfunctional fluorene-containing metal initiator of the present invention.
- the star polymer has a plurality of A radial molecular structure of a polymerized chain arm produced by a monomer reaction that is elongated in a radial direction with the initiator of the present invention as a core, wherein the initiator has Polyfunctional organic alkali metal initiator of general formula M a (RMe) b , where M is an element selected from Sn, Ti, Al, Si and / or B;
- R is a hydrocarbon group having 8 to 100 carbon atoms, preferably 20 to 60;
- Me is an alkali metal, preferably Na and / or Li;
- a 0.7 ⁇ 3, preferably 1-3;
- the monomer is a diene and / or a monoolefin.
- the monomer used in the anionic polymerization reaction of the present invention may be any monomer that can be used for anionic solution polymerization, and may be a diene such as butadiene, isoprene, pentadiene and their homologues, etc .; or Monoolefins such as vinyl aromatic hydrocarbons, including styrene, ⁇ -methylstyrene, and their homologues.
- the proportion of each monomer can be arbitrarily adjusted, such as in the reaction monomer It can be arbitrarily changed in the range of 0.1% to 99.9% of the total body weight, especially 10% to 90% is a more commonly used adjustment range.
- the star polymer of the present invention can be basically any monomer that can be anionic polymerized. Synthetic products can be used to transform different monomers at different times during the synthesis reaction to synthesize products with various properties, thereby realizing the molecular design and final product properties. Different synthesis control methods can be made according to requirements. .
- the star polymer can be directly completed without having to go through subsequent coupling steps as in the prior art.
- One of the important signs of the polymerization product produced by this one-step synthesis process is that the GPC spectrum of the molecular weight distribution of the polymerization product has a uniform unimodal distribution distribution feature, as shown in FIG. 1.
- the GPC spectra made by the molecular weight distributions of many different coupled star polymers do not show a uniform unimodal shape like the star polymer of the present invention, but a multimodal shape distribution. This is an important sign of the significant difference in molecular weight caused by subsequent coupling steps.
- the initiator of the present invention can produce a wide variety of polymerization products with different properties according to the different monomers used and the different ratios of the monomers through the anionic polymerization process.
- It is a star homopolymer such as LCBR, MVBR, HVBR, etc .; it can also be a star copolymer such as (SB) n R, (SI) n R, S-SBR, HIPS, and monomers with partial polarity (such as MMA ) Star polymers of chain links; even a series of known and unknown star polymer products such as "Integrated Rubber" (S-SIBR), which is newly developed in the world.
- S-SIBR Integrated Rubber
- the average number of polymerized chain arms contained in each molecule of the star polymer synthesized by the present invention is
- the polyfunctional group of the present invention has a metal initiator molecule itself containing Sn, Ti, Al, Si, B and other heteroatoms, it is also included in the corresponding star polymers. Contains the same heteroatoms.
- the introduction of heteroatoms is conducive to the uniform distribution of carbon black, which in turn makes the product The comprehensive mechanical properties have been improved. This kind of improvement is not easy for polymers synthesized by hetero atom-free initiation systems. It has excellent economic benefits and industrial applicability for improving product performance and simplifying production processes .
- a method for preparing a star polymer in the presence of a metal initiator of the polyfunctional group of the present invention, a method for preparing a star polymer is also an important aspect of the present invention.
- the method of preparing a star polymer of the present invention includes a polyfunctional group having a metal Conducting anionic solution polymerization of mono-olefins and / or di-olefins in a hydrocarbon solvent in the presence of an initiator, said initiator being a compound of the general formula M a (RMe) b ;
- the hetero atom M is an element selected from Sn, Ti, Al, Si, and / or B;
- R is a hydrocarbon group having 8 to 100 carbon atoms, preferably 20 to 60 carbon atoms, formed by the reaction of a mono-olefin and / or a di-olefin;
- Me is a reduced metal, preferably sodium and / or lithium;
- a 0.7 ⁇ 3, preferably 1 *-3;
- the amount of the polyfunctional metal initiator in the polymerization reaction system is generally about 0.5-10 milligrams per 100 grams of monomer based on the millimolar amount of the active alkali metal. Molar, preferably about 0.7 to 6 mmol.
- the reaction temperature is 5-100 It is preferably 10-90.
- the reaction pressure is generally from normal pressure to 0.5 MPa.
- the reaction time is not critical, and generally ranges from 0.5 to 8 hours.
- the alcohol is added to deactivate the active center according to conventional techniques, and the reaction is ended.
- the selection of monomers can be any monomer that can be used for anionic polymerization as described above. It can be a diolefin such as butadiene, isoprene, pentadiene, and their homologues. It can also be a monoolefin such as ethylene. Aromatic hydrocarbons such as phenethylhydrazone, ⁇ -methylstyrene, and their homologues, as well as acrylic monomers such as acrylic vinegar, methacrylate, etc., can be used as monomers in the polymerization method of the present invention.
- the proportion of each monomer can be arbitrarily adjusted, such as arbitrarily changed in the range of 0.1% to 99.9% of the total weight of the reaction monomer, especially 10% to 90% is more commonly used. Adjustment range.
- the selection of the monomer is easy for those skilled in the art.
- the amount of monomer used is also close to the amount of monomer used in most anionic polymerization, that is, based on the total weight of the reaction system, the monomer content is about It is about 5-20%, preferably about 8-15%.
- the solvent used in the method of the present invention may be any solvent or mixed solvent that can be used in the field of anionic polymerization.
- a hydrocarbon solvent is used as the solvent in the polymerization method of the present invention, such as cyclohexane, pentane, hexane, and heptane. , Raffinate, benzene, toluene, etc. or their mixed solvents.
- the amount is generally about 80%-95% (weight) of the reaction system, especially about 85%-92%.
- auxiliary reagents such as Lewis base modifiers, such as diethylene glycol dimethylarsine (2G), triethylene glycol dicarboxylic acid (3G), dimethoxy
- Lewis base modifiers such as diethylene glycol dimethylarsine (2G), triethylene glycol dicarboxylic acid (3G), dimethoxy
- Ethane (DME) hexamethylphosphonium triamine ( ⁇ MPTA), tetramethylethylenediamine (TMEDA), tetrahydrofuran (THF), dioxane (DOX), triethylamine and other fluorene and amine compounds .
- ⁇ MPTA hexamethylphosphonium triamine
- TEZ tetramethylethylenediamine
- THF tetrahydrofuran
- DOX dioxane
- triethylamine and other fluorene and amine compounds .
- the amount is well known to those skilled in the art, it is easy to make decisions based on different requirements without
- the anionic polymerization reaction process is as follows: Before adding the reaction materials, the reactor is baked at high temperature, purged with nitrogen three or more times, and then the monomer solution and the Measured Lewis base conditioner, and finally multi-functional organic metal reducing initiator is metered in. At 40-90 temperature under nitrogen protection, the reaction is carried out under normal pressure for 2 to 5 hours. Then the reaction is terminated with methanol, and the solvent is distilled off by water vapor and dried. The star polymer was obtained.
- the above-mentioned initiator of the present invention can It is suitable for the synthesis of a variety of different monomers. It can change the polymerization product at any time, has great flexibility, and does not require out-of-class equipment investment to change the product; and because there is no coupling step, the performance of the polymerization product is also improved. This is because the coupling reaction occurs between the macromolecular chain and the small molecule coupling agent.
- the steric hindrance caused by the viscosity of the macromolecular system and the curling of the molecular chain will affect the coupling effect (generally around 50%).
- the present invention does not require a coupling step, a star polymer is obtained by one-step polymerization, the molecular weight distribution is relatively uniform, and basically no linear macromolecules are present. Therefore, both its mechanical properties and dynamic mechanical properties have been comprehensively improved. The same conclusion can be reached in the performance comparison made in the examples.
- the present invention will be further described below with reference to the examples, but these examples do not limit the present invention in any form.
- the relevant performance tests are tested according to the national standard GB 528, "300% elongation strength", tensile strength (breaking) Strength) and elongation at break; while testing Shore A hardness according to GB531-83; and using a dynamic viscoelastic analyzer to measure the 3 ⁇ 4 ⁇ value.
- the experimental device is the same as in Example 1.
- the average functionality of the product was 6.5.
- the average number of tin atoms per molecule was 2.6.
- the experimental device is the same as in Example 1. 30 ml of cyclohexane, 1.8 g of isoprene, 8 mmol of sodium naphthalene initial initiator, 25: reaction for 1 hour. 0.9 mmol of silicon tetrachloride solution was added, and 25 X continued to react 1 The reaction was stopped after hours. The average functionality of the obtained polyfunctional organic sodium initiator was 2.5. The average number of silicon atoms per molecule was 0.7.
- the experimental device is the same as in Example 1. 30 ml of cyclohexane, 2.4 g of styrene, 12 mmol of lithium initial initiator, and 25 X were reacted for 1 hour. SiCH 3 Cl 3 was added for 2 hours, and the reaction was continued for 1 hour to stop the reaction. The average functionality of the functional organolithium initiator is 2.9. The average number of silicon atoms per molecule is 1
- the obtained product was 130 grams of star S-SIBR.
- the molecular weight was 290,000, the molecular weight distribution was 1.46, and the average number of arms was 3.8.
- the properties are shown in Table 3.
- the Sn-SBR star polymer of the present invention As a comparative example of the performance of the star polymer in the prior art, the Sn-SBR star polymer of the present invention and the commercially available SL-557 R (JSR (Company), Japan FT S-SBR, and Linear S-SBR and E-SBR-1500 products for comparison.
- JSR Joint Photographic Experts Group
- the test results are listed in Table 5 below.
- the tg ⁇ value at 0 X indicates wet skid resistance. The higher the value, the better the wet skid resistance.
- the tg ⁇ value at 50 indicates rolling resistance. The lower the value, the rolling resistance. The lower the molecular weight distribution, compared with the narrow distribution of linear polymers (anionic polymerization), the star polymer of the present invention has a wider distribution, indicating that it has much better cold flow properties and processability.
- Table 5 Mechanical and dynamic properties of several SBRs
- the molecular weight distribution test of the Sn-SBR star-shaped polymerization product prepared in Example 6 was also performed by measuring the molecular weight by membrane osmotic pressure method and measuring the molecular weight distribution by gel permeation chromatography (tetrahydrofuran as a solvent, 10 mg / 10 ml).
- NS-110 R and NS-114 are coupled S-SBR, and their GPC spectra are shown in Figures 5 and 6, respectively.
- the method for synthesizing the polyfunctional group with a metal initiator according to the present invention has more practical industrial applications due to the readily available raw materials, low cost, simple synthesis process, and easy adjustment of functionality. Value.
- star polymers such as star styrene-butadiene random copolymers (energy-saving solvent-soluble styrene-butadiene rubber); star styrene-isoprene random copolymers; Stupid ethylene-butadiene-isoprene terpolymer; star Type medium vinyl, high vinyl polybutadiene; star type medium polyisoprene or 3, 4-and 1, 2-polyisoprene; star type (SI) 11 or (SB) n R (thermoplastic elastomer); K-resin; star polymer (functional elastomer) with special end groups, these end groups can be-OH,-COOH,-X,-NR 2 (R: H or Alkyl) etc.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerization Catalysts (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96934324A EP0856522B1 (en) | 1995-10-17 | 1996-10-17 | A multifunctional organic alkali metal initiator and its synthesis, anonic polymerised star polymers and their preparation |
JP9515389A JPH11513715A (ja) | 1995-10-17 | 1996-10-17 | 多官能価有機アルカリ金属開始剤およびその合成、アニオン重合された星形重合体およびそれらの調製 |
US09/051,760 US6150487A (en) | 1995-10-17 | 1996-10-17 | Multifunctional organic alkali metal initiator and its synthesis, anionic polymerized star polymers and their preparation |
DE69625612T DE69625612T2 (de) | 1995-10-17 | 1996-10-17 | Multifunktioneller organischer alkalimetallinitiator und seine synthese, anionisch polymerisierte sternförmige polymere und ihre herstellung |
TW086100276A TW401425B (en) | 1995-10-17 | 1997-01-13 | Polyfunctional organic alkali metal initiator, process for synthesizing the same and star polymer polymerized in anionic polymerization as well as its preparation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN95116575.5 | 1995-10-17 | ||
CN95116575A CN1048989C (zh) | 1995-10-17 | 1995-10-17 | 多官能团有机碱金属引发剂及其合成方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997014722A1 true WO1997014722A1 (fr) | 1997-04-24 |
Family
ID=5080953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN1996/000090 WO1997014722A1 (fr) | 1995-10-17 | 1996-10-17 | Initiateur organique multifonctionnel a metal alcalin, sa synthese, des polymeres anioniques en etoile obtenus par polymerisation anionique et leur preparation |
Country Status (7)
Country | Link |
---|---|
US (1) | US6150487A (zh) |
EP (1) | EP0856522B1 (zh) |
JP (2) | JPH11513715A (zh) |
CN (1) | CN1048989C (zh) |
DE (1) | DE69625612T2 (zh) |
TW (1) | TW401425B (zh) |
WO (1) | WO1997014722A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6462137B2 (en) | 2000-10-19 | 2002-10-08 | China Petroleum And Chemical Corporation | Star-block interpolymers and preparation of the same |
JP5160016B2 (ja) * | 2001-10-31 | 2013-03-13 | コンパニー ゼネラール デ エタブリッスマン ミシュラン | タイヤトレッドコンパウンド用ブロックコポリマーの製造方法及び該コポリマー |
CN1181101C (zh) | 2001-12-31 | 2004-12-22 | 中国石油化工股份有限公司 | 含锡有机锂化合物及其制备方法 |
FR2854635B1 (fr) * | 2003-05-07 | 2006-07-14 | Michelin Soc Tech | Procede de preparation de copolymeres a blocs pour compositions de bande de roulement de pneumatique, et ces copolymeres |
FR2854636B1 (fr) * | 2003-05-07 | 2006-07-14 | Michelin Soc Tech | Procede de preparation de copolymeres a blocs pour compositions de bande de roulement de pneumatique, et ces copolymeres |
CN101045756B (zh) * | 2006-03-30 | 2011-01-12 | 北京化工大学 | 一种阴离子聚合用多官能团有机碱金属引发剂的制备方法 |
EP2070952A1 (en) * | 2007-12-14 | 2009-06-17 | Continental Aktiengesellschaft | Vulcanizable rubber mixture and its use for rubber products |
JP5692067B2 (ja) | 2009-05-11 | 2015-04-01 | 日本ゼオン株式会社 | 末端変性放射状共役ジエン重合体の製造方法 |
KR102121881B1 (ko) * | 2013-03-29 | 2020-06-11 | 제온 코포레이션 | 방사상 공액 디엔계 고무의 제조 방법 |
DE102015221529A1 (de) * | 2015-11-03 | 2017-05-04 | Cht R. Beitlich Gmbh | Kontinuierliches Verfahren für Reaktionen mit feinteiligen Alkalimetall-Dispersionen |
JP6901198B2 (ja) | 2015-11-16 | 2021-07-14 | 株式会社ブリヂストン | アニオン重合のための官能性開始剤 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4519431A (en) * | 1981-11-30 | 1985-05-28 | Bridgestone Tire Company Limited | Styrene-butadiene copolymers with high styrene content |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3122527A (en) * | 1956-08-17 | 1964-02-25 | Firestone Tire & Rubber Co | Polymerization of olefins with catalyst containing adduct of alkali metal and polynuclear aromatic compound |
US4020258A (en) * | 1971-11-04 | 1977-04-26 | Phillips Petroleum Company | Addition of coupling agent during organolithium initiated polymerizations |
GB1555729A (en) * | 1976-06-17 | 1979-11-14 | Charbonnages Ste Chimique | Bifunctional and trifunctional organo-lithium initiators and their use |
US4091198A (en) * | 1976-09-10 | 1978-05-23 | Phillips Petroleum Company | Suppressing gel in the continuous solution polymerization of a conjugated diene with a monovinyl aromatic compound |
DD150469A1 (de) * | 1977-02-24 | 1981-09-02 | Christoph Roth | Verfahren zur herstellung multifunktioneller polymerisationsinitiatoren |
US4196153A (en) * | 1977-08-15 | 1980-04-01 | The Dow Chemical Company | Polyfunctional lithium containing initiator |
DD158781A1 (de) * | 1980-04-01 | 1983-02-02 | Elisabeth Anton | Verfahren zur herstellung von multifunktionellen lithiumhaltigen polymerisationsinitiatoren |
NL86588C (zh) * | 1980-09-20 | |||
FR2498193B1 (fr) * | 1981-01-19 | 1986-03-21 | Poudres & Explosifs Ste Nale | Nouvelles associations de bases resultant de la combinaison d'un alkyl ou aryl lithien avec un amidure ou un hydrure alcalin, procede de polymerisation les utilisant et produit obtenu |
JPS57205414A (en) * | 1981-06-10 | 1982-12-16 | Japan Synthetic Rubber Co Ltd | Production of styrene/butadiene rubber |
US4526934A (en) * | 1982-03-19 | 1985-07-02 | Bridgestone Tire Company Limited | Branched styrene-butadiene copolymers and pneumatic tires using the same |
DE3309748A1 (de) * | 1982-07-23 | 1984-03-01 | Veb Chemische Werke Buna, Ddr 4212 Schkopau | Verfahren zur herstellung mehrfunktioneller polymerisationsinitiatoren |
JPS5978214A (ja) * | 1982-10-27 | 1984-05-07 | Japan Synthetic Rubber Co Ltd | ブタジエン系ゴム材料 |
JPS60255838A (ja) * | 1984-06-01 | 1985-12-17 | Japan Synthetic Rubber Co Ltd | タイヤ用ゴム組成物 |
EP0210016B1 (en) * | 1985-07-12 | 1992-01-22 | The Dow Chemical Company | Polymerization process and initiator system therefor |
GB9002804D0 (en) * | 1990-02-08 | 1990-04-04 | Secr Defence | Anionic polymerisation |
US5268439A (en) * | 1991-01-02 | 1993-12-07 | Bridgestone/Firestone, Inc. | Tin containing elastomers and products having reduced hysteresis properties |
US5587420A (en) * | 1992-06-04 | 1996-12-24 | Bridgestone Corporation | Diene polymer obtained by adding a tin compound in the polymerization with an organolithium initiator |
US5527753A (en) * | 1994-12-13 | 1996-06-18 | Fmc Corporation | Functionalized amine initiators for anionic polymerization |
-
1995
- 1995-10-17 CN CN95116575A patent/CN1048989C/zh not_active Expired - Lifetime
-
1996
- 1996-10-17 EP EP96934324A patent/EP0856522B1/en not_active Expired - Lifetime
- 1996-10-17 WO PCT/CN1996/000090 patent/WO1997014722A1/zh active IP Right Grant
- 1996-10-17 DE DE69625612T patent/DE69625612T2/de not_active Expired - Lifetime
- 1996-10-17 JP JP9515389A patent/JPH11513715A/ja active Pending
- 1996-10-17 US US09/051,760 patent/US6150487A/en not_active Expired - Fee Related
-
1997
- 1997-01-13 TW TW086100276A patent/TW401425B/zh not_active IP Right Cessation
-
2007
- 2007-07-23 JP JP2007190923A patent/JP2007262428A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4519431A (en) * | 1981-11-30 | 1985-05-28 | Bridgestone Tire Company Limited | Styrene-butadiene copolymers with high styrene content |
Non-Patent Citations (3)
Title |
---|
HECHENG XIANGJIAO GONGYE, Vol. 14(6), 1991, (Beijing), ZHANG XINGYING, JIN GUANTAI, "Synthesis of Energy-Saving Solution- Polymerized SBR", page 393. * |
See also references of EP0856522A4 * |
SHIYOU HUAGONG, Vol. 19(9), 1990, (Beijing), ZHANG LEI et al., "Synthesis and Characterization of Star-Shaped Isoprene-Styrene Block Copolymer", pages 604-605. * |
Also Published As
Publication number | Publication date |
---|---|
CN1148053A (zh) | 1997-04-23 |
JPH11513715A (ja) | 1999-11-24 |
US6150487A (en) | 2000-11-21 |
EP0856522B1 (en) | 2003-01-02 |
EP0856522A4 (en) | 1998-11-18 |
JP2007262428A (ja) | 2007-10-11 |
DE69625612T2 (de) | 2003-11-13 |
DE69625612D1 (de) | 2003-02-06 |
TW401425B (en) | 2000-08-11 |
CN1048989C (zh) | 2000-02-02 |
EP0856522A1 (en) | 1998-08-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3452094B2 (ja) | インサイチユー連続分散アニオン重合方法 | |
CA2112003C (en) | Process for the preparation of in situ dispersion of copolymers | |
US5614579A (en) | Process for the preparation of tapered copolymers via in situ dispersion | |
KR100258271B1 (ko) | 음이온성 중합 개질제 | |
JP2628822B2 (ja) | 連続漸減ポリマー類およびコポリマー類の製造方法およびそれを用いて製造した製品 | |
JP2007262428A (ja) | 多官能価有機アルカリ金属開始剤およびその合成、アニオン重合された星型ポリマーおよびそれらの調製 | |
JP4213468B2 (ja) | 星形−ブロックインターポリマー及びそれらの製造 | |
CN109181813B (zh) | 一种用于润滑油的星形黏度指数改进剂及其制备方法 | |
WO1997006194A1 (fr) | Copolymeres blocs thermoplastiques d'elastomere et leurs procedes de fabrication | |
JPS5871909A (ja) | 共役ジエン又はビニル置換芳香族炭化水素及びアクリルエステルのブロツク共重合体及びその製造方法 | |
JPH07304810A (ja) | 工業的に用いうる二官能性陰イオン重合開始剤の製造方法およびその使用 | |
JP2003506504A (ja) | ブタジエン/イソプレン/モノビニル芳香族モノマーのヘプタブロックコポリマーおよびそれを製造する方法 | |
KR20210068516A (ko) | 적어도 하나의 폴리(알파-메틸스티렌) 블록을 포함하는 열가소성 엘라스토머의 합성 방법 | |
US6777499B2 (en) | Multiblock interpolymers and processes for the preparation thereof | |
US6756448B2 (en) | Styrene copolymer | |
CA1220588A (en) | PROCESS FOR PREPARATION OF DIENE STYRENE .alpha.- METHYLSTYRENE BLOCK POLYMERS AND POLYMERS THEREFROM | |
CN113307913A (zh) | 一种星形偶联结构的含氮/硅氧功能化sibr集成橡胶及其制备方法 | |
CN1137174C (zh) | 用多螯型引发剂制备共轭二烯烃和单乙烯基芳轻二嵌段溶聚橡胶 | |
EP1266916A1 (en) | Multiblock copolymer the preparing method thereof | |
CN114539492A (zh) | 单乙烯基芳烃-共轭二烯烃嵌段共聚物及其制备方法和充油橡胶及应用 | |
CN115806721A (zh) | 丁苯嵌段共聚物混合物及其制备方法与应用 | |
CN117186326A (zh) | 一种苯乙烯-共轭二烯-苯乙烯三嵌段共聚物及其偶合物复合弹性体及其制备方法和应用 | |
CN114605601A (zh) | 一种活性纳米乳胶及其制备方法 | |
GB2516233A (en) | Microstructure modification of polydienes using polar modifiers | |
CN114539491A (zh) | 单乙烯基芳烃-共轭二烯烃嵌段共聚物及其制备方法和充油橡胶及应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP RU US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1997 515389 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1996934324 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09051760 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1996934324 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1996934324 Country of ref document: EP |