WO2011045450A1 - Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura - Google Patents
Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura Download PDFInfo
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- WO2011045450A1 WO2011045450A1 PCT/ES2009/070444 ES2009070444W WO2011045450A1 WO 2011045450 A1 WO2011045450 A1 WO 2011045450A1 ES 2009070444 W ES2009070444 W ES 2009070444W WO 2011045450 A1 WO2011045450 A1 WO 2011045450A1
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- styrene
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- butadiene
- butadiene block
- hydrogenated styrene
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- 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
- C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
Definitions
- the present invention relates to grades of high molecular weight styrene / butadiene hydrogenated rubber, a process for obtaining these products and their uses.
- TPEs thermoplastic elastomers
- Thermoplastic elastomers have become, since their appearance approximately 40 years ago, a family of widely known materials that combine elastomeric properties with a great ease of processing but, on the contrary, do not present the thermal and elastic stability of a vulcanized rubber.
- Most TPEs have resistance to oils and aging, especially due to the limited temperature effect. Thus, the values of compressive strength at short and long times are moderate at room temperature but poor at elevated temperatures.
- thermoplastic TPVs were only based on EPDM (ethylene-propylene-diene monomer rubber) totally or partially crosslinked and a polypropylene matrix, but new trends and increasingly stringent market demands (cost reduction, quality improvement , greater freedom of design and legal and environmental requirements) have made them consider new thermoplastic elastomers for the improvement of high temperature properties.
- EPDM ethylene-propylene-diene monomer rubber
- Compounds based on crosslinked hydrogenated block copolymers can present problems of insufficient compressive strength at high temperature (100 ° C), tendency to loss of mechanical strength, moldability problems (processability), low melt stress of the extrudate at high temperature and limited conformational stability.
- the present invention provides degrees of hydrogenated styrene / butadiene rubber with better performance at high temperature, which being of high molecular weight presents lower problems associated with its synthesis, its processability / moldability as well as the ability to optimize the scope of crosslinking in Vulcanized formulations.
- the advantages of the polymers of the present invention are mainly due to the viscosity significantly lower than that of polymers known in the state of the art.
- SEBS hydrogenated styrene-butadiene-styrene copolymers
- SEBS high molecular weight SEBS
- the present invention relates to an elastomeric thermoplastic composition characterized by having a compressive strength at temperatures between 20 and 100 ° C, comprising hydrogenated styrene-butadiene block copolymers where said copolymers are characterized by being linear or radial, for having a vinyl content of less than 60% and a styrene content between 30-41%, for having a molecular weight (MpicoSEBS) between 200,000 and 600,000 expressed as molecular weight of the peak of the styrene-ethylene / butylene-styrene triblock determined by GPC, using linear styrene-butadiene-styrene (SBS) triblock copolymer for the polymers with linear structure and constant styrene-butadiene-styrene triblock copolymer copolymers for polymers with radial structure and having a lower viscosity at 300cps, expressed as Brookfield visco
- Thermoplastic is understood as, in the present invention, a polymer that at room temperature is plastic or deformable, melts when heated and hardens in a vitreous state when it cools sufficiently.
- Most thermoplastics are high molecular weight polymers, which have associated chains through weak Van der Waals forces, strong dipole-dipole and hydrogen bond interactions, or even stacked aromatic rings.
- elastomer in the present invention is understood as a substance that can be stretched at room temperature to at least twice its original length and, when the stretching force ceases, said compound It is able to return approximately to its original length in a short time.
- the composition of the present invention comprises at least one hydrogenated block copolymer obtained by hydrogenation of a block copolymer composed of at least 2 A blocks, mainly based on aromatic vinyl compounds, preferably styrene and at least one B block based primarily on a conjugated diene, preferably butadiene.
- these hydrogenated block copolymers are copolymers of vinyl aromatic compounds and conjugated dienes compounds with a structure A-B-A, B-A-B-A or A-B-A-B-A.
- Vinyl aromatic monomers useful for the present invention include styrene, p-methyl styrene and p-tert-butyl styrene, with styrene being the most preferred. They can be used alone or in combination.
- the conjugated diene monomers useful for the present invention include 1,3-butadiene, isoprene, 1,3-pentadiene and 2,3-dimethyl-1,3-butadiene, 1,3-butadiene being most preferred. They can be used alone or in combination.
- Brookfield viscosity is the apparent viscosity in centipoise (cps), determined by the Brookfield viscometer, which measures the torque required to rotate a spindle at a constant speed in a polymer solution in toluene.
- the method used in the present invention is based on the procedure of the American Society for Testing and Materials (ASTM D3236); Used for measuring viscosities of oils at low temperatures.
- the method selected for the determination of the capacity of recovery of the material is the "compression set" according to ASTM D395 82 (method B: "compression sef under a constant deformation).
- the compression sets are intended to measure the ability of the compounds of rubber to maintain elastic properties after prolonged action of compressive stress
- the current compression tests include the maintenance of a defined deviation, the constant application of a known force or rapid and repeated deformations and the resulting recovery of intermittent compressive forces. They are frequently performed at elevated temperatures.
- the elastomeric thermoplastic composition of the present invention comprises hydrogenated styrene-butadiene block copolymers characterized in that the vinyl content is less than 45%.
- the elastomeric thermoplastic composition of the present invention comprises hydrogenated styrene-butadiene block copolymers characterized in that they have a molecular weight (Mpico SEBS) between 420,000 and 575,000.
- said hydrogenated styrene-butadiene block copolymers have a molecular weight between 420,000 and 475,000.
- the elastomeric thermoplastic composition of the present invention comprises hydrogenated styrene-butadiene block copolymers characterized in that they have a viscosity (Brookfield 5% by weight in cyclohexane) of less than 100 cps.
- the elastomeric thermoplastic composition of the present invention comprises styrene-butadiene block copolymers. Hydrogenates characterized in that the degree of hydrogenation is equal to or greater than 97%.
- the elastomeric thermoplastic composition of the present invention comprises hydrogenated styrene-butadiene block copolymers characterized in that they incorporate between 0.4 and 2% by weight of the total butadiene as a minor monomer in the styrene terminal blocks.
- the elastomeric thermoplastic composition of the present invention comprises a hydrogenated styrene-butadiene block copolymer characterized in that it is radial, has a vinyl content of less than 45%, has a molecular weight (MpicoSEBS) between 420,000 and 575,000 and a viscosity (Brookfield 5% by weight in cyclohexane) less than 300cps.
- the elastomeric thermoplastic composition of the present invention comprises a hydrogenated styrene-butadiene block copolymer characterized in that it is linear, has a vinyl content of less than 45%, has a molecular weight (MpicoSEBS) between 200,000 and 240,000, a viscosity (Brookfield 5% by weight in cyclohexane) less than 100cps and also incorporates between 0.5 and 1% by weight of the total butadiene as a minor monomer in the styrene terminal blocks.
- a hydrogenated styrene-butadiene block copolymer characterized in that it is linear, has a vinyl content of less than 45%, has a molecular weight (MpicoSEBS) between 200,000 and 240,000, a viscosity (Brookfield 5% by weight in cyclohexane) less than 100cps and also incorporates between 0.5 and 1% by weight of the total butadiene as a minor mono
- the elastomeric thermoplastic composition of the present invention comprises a hydrogenated styrene-butadiene block copolymer characterized in that it is radial, has a vinyl content of less than 45%, has a molecular weight (MpicoSEBS) between 420,000 and 575,000, a viscosity (Brookfield 5% by weight in cyclohexane) less than 300cps and also incorporates between 0.5 and 1% by weight of the total butadiene as a minor monomer in the terminal blocks of styrene.
- Molecular weight Molecular weight
- Brookfield 5% by weight in cyclohexane a viscosity
- the elastomeric thermoplastic composition of the present invention comprises a hydrogenated styrene-butadiene block copolymer characterized in that it is linear, has a vinyl content between 50-55%, has a molecular weight (MpicoSEBS) between 300,000 and 350,000 and a viscosity (Brookfield 5% by weight in cyclohexane) less than 100cps.
- a hydrogenated styrene-butadiene block copolymer characterized in that it is linear, has a vinyl content between 50-55%, has a molecular weight (MpicoSEBS) between 300,000 and 350,000 and a viscosity (Brookfield 5% by weight in cyclohexane) less than 100cps.
- the present invention relates to a linear or radial hydrogenated styrene-butadiene block copolymer obtainable by anionic polymerization of a block copolymer comprising at least two blocks of aromatic vinyl monomer and a monomer block of a conjugated diene, and subsequent hydrogenation, characterized in that it has a vinyl content of less than 60%, a molecular weight between 200,000 and 600,000 and a viscosity of less than 300 cps.
- the styrene-butadiene block copolymer described above has a vinyl content of less than 45%.
- the styrene-butadiene block copolymer described above has a molecular weight (MpicoSEBS) between 420,000 and 575,000. More preferably, said copolymer has a molecular weight between 420,000 and 475,000 ⁇
- the hydrogenated styrene-butadiene block copolymer described above has a viscosity (Brookfield 5% by weight in cyclohexane) of less than 100 cps.
- the hydrogenated styrene-butadiene block copolymer described above has a degree of hydrogenation preferably equal to or greater than 97%.
- the hydrogenated styrene-butadiene block copolymer described above incorporates between 0.4 and 2% by weight of the total butadiene as a minor monomer in the styrene terminal blocks.
- Another preferred embodiment of the present invention relates to a hydrogenated styrene-butadiene block copolymer characterized in that it is radial, has a vinyl content of less than 45%, has a molecular weight between 420,000 and 575,000 and a viscosity of less than 300cps.
- Another preferred embodiment of the present invention relates to a hydrogenated styrene-butadiene block copolymer characterized in that it is linear, has a vinyl content of less than 45%, has a molecular weight between 200,000 and 240,000, a viscosity of less than 100cps and also incorporates between 0.5 and 1% by weight of the total butadiene as a minor monomer in the styrene terminal blocks.
- Another preferred embodiment of the present invention relates to a hydrogenated styrene-butadiene block copolymer characterized in that it is radial, has a vinyl content of less than 45%, has a molecular weight between 420,000 and 575,000, a viscosity of less than 300cps and also incorporates between 0.5 and 1% by weight of the total butadiene as a minor monomer in the styrene terminal blocks.
- Another preferred embodiment of the present invention relates to a hydrogenated styrene-butadiene block copolymer characterized in that It is linear, has a vinyl content between 50-55%, has a molecular between 300,000 and 350,000 and a viscosity of less than 100cps.
- a more preferred embodiment of the present invention relates to a family of copolymers obtainable as described in Example 1 of SEBS-1, which is a styrene-butadiene block copolymer of high hydrogenated radial molecular weight characterized by having a styrene content ( % weight) from 30 to 41, with a content of fraction 1, 2- polybutadiene in precursor styrene-butadiene copolymer precursor (% weight over butadiene fraction) of 38 ⁇ 2, with a degree of hydrogenation (%) greater than 97, with a molecular weight (MpicoSEBS) of 525,000 ⁇ 50,000, with coupling (%)> 60%, number of branches: 3-4 and coupling with silicon tetrachloride.
- SEBS-1 is a styrene-butadiene block copolymer of high hydrogenated radial molecular weight characterized by having a styrene content ( % weight) from 30 to 41, with
- Another more preferred embodiment of the present invention relates to a family of copolymers obtainable as described in Example 2 of SEBS-2, which is a hydrogenated linear linear molecular weight styrene-butadiene block copolymer characterized by having butadiene in the terminal blocks.
- styrene with a styrene content (% weight) of 31 to 35, with a 1,2-polybutadiene fraction content in a non-hydrogenated precursor copolymer (% weight over butadiene fraction) of 38 ⁇ 2, with a degree of hydrogenation ( %) greater than 99, with a molecular weight (MpicoSEBS) of 220,000 ⁇ 20,000, with a distribution of butadiene in the three blocks (%) of 1 -98-1 and a content of block styrene in non-hydrogenated precursor copolymer (%) greater than 75
- Another more preferred embodiment of the present invention relates to a family of copolymers obtainable as described in example 3 of SEBS-3, which is a hydrogenated radial molecular weight styrene-butadiene block copolymer characterized by having butadiene in the terminal blocks of styrene, with a styrene content (% weight) of 31 to 35, with a 1,2-polybutadiene fraction content in a non-hydrogenated precursor copolymer (% weight over butadiene fraction) of 38 ⁇ 2, with a degree of hydrogenation (%) greater than 97, with a molecular weight (MpicoSEBS) of 450,000 ⁇ 25,000, with coupling (%) greater than 60, with a number of branches of 3-4 and coupling with silicon tetrachloride.
- SEBS-3 is a hydrogenated radial molecular weight styrene-butadiene block copolymer characterized by having butadiene in the terminal blocks of
- the distribution of butadiene in the three blocks (%) is 1 -98-1 and a content of block styrene in non-hydrogenated precursor copolymer (%) greater than 80.
- Another more preferred embodiment of the present invention relates to a family of copolymers obtainable as described in example 4 of SEBS-4, which is a hydrogenated linear styrene-butadiene block copolymer characterized by having a styrene content (% weight) of 31 to 35, a fraction content 1, 2-Polybutadiene in precursor non-hydrogenated copolymer (% weight over butadiene fraction) of 50-55, a degree of hydrogenation (%) greater than 99 and a molecular weight (MpicoSEBS) of 325,000 ⁇ 25,000.
- the present invention relates to a process for obtaining a copolymer as described above comprising:
- the block copolymers of the present invention were synthesized following an anionic polymerization process of styrene (and optional butadiene) and butadiene sequentially (for obtaining linear polymers) or using a coupling agent (for obtaining radial polymers) in cyclohexane using n-butyllithium as initiator of polymerization and an ether type substance for the control of the vinyl content in the butadiene fraction.
- the block copolymers thus obtained are subjected to a hydrogenation reaction for 1 hour at 90 ° C in a hydrogen atmosphere (10 Kg / cm 2 ) using a titanium metallocene catalyst in tetrahydrofuran to obtain the corresponding hydrogenated block copolymers.
- the present invention relates to a process for obtaining a composition as described above comprising mixing a copolymer as described above, a thermoplastic resin, a plasticizing agent and a stabilizer.
- thermoplastic resin is polypropylene. This resin causes an acceleration in the process of dispersion of the rubber in the formulation as well as improving the appearance of the finished product, also adjusting the hardness and swelling.
- the plasticizing agent is a paraffinic oil.
- This plasticizing agent facilitates processability as well as the adjustment of parameters of moldability, hardness and smoothness.
- the plasticizers suitable for carrying out this process are preferably paraffinic oils that preferably have a kinematic viscosity between 20-50,000 csk at 37.8 ° C; 5-1 .500 csk at 100 ° C, "pour point” from -10 to 15 ° c and flash point 170-300 ° C (Pionier 2071 oil, Kristol M70, Primol 352 etc).
- a vulcanization agent and a vulcanization coagent are also mixed in the above-described process.
- the vulcanization process consists in the production of a thermoplastic elastomer by selective cross-linking of the flexible phase of an elastomer during mixing with an immiscible thermoplastic matrix.
- the first half of the extrusion process be carried out at a temperature at which the half-life of the organic peroxide is equal to or greater than half the time of extrusion, while the temperature of the second half of extrusion time is such that the average lifetime of the peroxide is less than half of the total extrusion time.
- the mixing and melting process is carried out in a double screw extruder in a temperature range between 160 and 220 ° C.
- the vulcanizing agent is an organic peroxide which is selected from dicumyl peroxide or 2,5-dimethyl-2,5-di (t-butylperoxy) hexane.
- the vulcanization coagent is a multifunctional vinyl monomer. More preferably, the vulcanization coagent is triallylisocyanurate or triethylene glycol dimethacrylate.
- the present invention relates to a product obtained by injection molding or extrusion of a composition as described above.
- POLYMER A SEBS-1: Hydrogenated radial molecular weight styrene-butadiene block copolymer. Styrene content (% weight): 30-41. Fraction 1,2,2-polybutadiene content in precursor styrene-butadiene copolymer precursor (% weight over butadiene fraction): 38 ⁇ 2. Hydrogenation (%):> 97 Molecular weight (MpicoSEBS): 525,000 ⁇ 50,000. Coupling (%):> 60%. Number of branches: 3-4. Silicon tetrachloride coupling. Viscosity in solution (expressed as Brookfield Viscosity - 5%): ⁇ 300 cps
- POLYMER B1 SEBS-2: High molecular weight linear styrene-butadiene block copolymer hydrogenated with butadiene in the styrene terminal blocks.
- Styrene content (% weight): 31 -35.
- Fraction 1, 2-polybutadiene content in precursor non-hydrogenated copolymer (% weight over butadiene fraction): 38 ⁇ 2.
- Hydrogenation (%):> 99.
- Molecular Weight (MpicoSEBS) 220,000 ⁇ 20,000.
- Viscosity in solution (expressed as Brookfield Viscosity - 5%): ⁇ 100 cps
- POLYMER B2 SEBS-3: High molecular weight radial styrene-butadiene block copolymer hydrogenated with butadiene in the styrene terminal blocks.
- Styrene content (% weight): 33 ⁇ 2.
- Fraction 1, 2-polybutadiene content in precursor non-hydrogenated copolymer (% weight over butadiene fraction): 38 ⁇ 2.
- Hydrogenation (%):> 97.
- Weight Molecular (MpicoSEBS) 450,000 ⁇ 25,000.
- Block styrene in precursor non-hydrogenated copolymer (%):> 80.
- Viscosity in solution (expressed as Brookfield Viscosity - 5%): ⁇ 300 cps
- POLYMER C SEBS-4: Hydrogenated linear molecular weight styrene-butadiene block copolymer. Styrene content (% weight): 33 ⁇ 2. Fraction 1, 2-polybutadiene content in precursor non-hydrogenated copolymer (% weight over butadiene fraction): 50-55. Hydrogenation (%):> 99. Molecular Weight (MpicoSEBS): 325,000 ⁇ 25,000. Viscosity in solution (expressed as Brookfield Viscosity - 5%): ⁇ 100 cps
- cyclohexane is introduced as solvent, styrene as a monomer, n-butyl lithium as initiator and polar modifier (tetrahydrofuran, 1,2-diethoxypropane or ditetrahydrofuryl propane) in sufficient concentration to reach vinyl levels and target block .
- polar modifier tetrahydrofuran, 1,2-diethoxypropane or ditetrahydrofuryl propane
- SEBS-2 and SEBS-3 In this first stage a controlled amount (1% of total butadiene) of butadiene is added as a minor monomer for controlled incorporation along the styrene terminal block.
- the polymerization is allowed to proceed at a temperature of 65 ° C and with a total stage time never exceeding 35 minutes, controlling the temperature peak associated with the polymerization of styrene. Once the styrene polymerization is finished, butadiene is added to the reactor and the polymerization is allowed to take place for a certain time for 10 minutes after the maximum temperature peak.
- SEBS-2 incorporates styrene ⁇ 50% of the total) and butadiene ⁇ 1% of the total) simultaneously to the reactor.
- SEBS-4 styrene (50%) of the total is incorporated
- hydrogenation is carried out in the presence of a titanium metallocene catalyst controlling the temperature, pressure and flow rate of hydrogen consumption during hydrogenation.
- EXAMPLE 1 SEBS-1 In a stirred reactor (CSTR) cyclohexane (6509 g) is introduced as solvent, styrene (1371 g of 25% weight solution) as monomer (9% solids), n-butyllithium as initiator and polar modifier (1, 2-diethoxypropane) in sufficient concentration (200 ppm) to reach the target vinyl levels.
- CSTR stirred reactor
- styrene 1371 g of 25% weight solution
- n-butyllithium as initiator
- polar modifier 1, 2-diethoxypropane
- butadiene (682 g) is added to the reactor and the polymerization is allowed to take place for a period of time determined for 10 minutes after the maximum temperature peak.
- the coupling agent silicon tetrachloride
- the coupling reaction is allowed to take place at a temperature in the range 70-90 ° C for a time of 30 minutes.
- the live chains are terminated by incorporating a proton donor substance (BHT) into the reaction medium.
- hydrogenation is carried out in the presence of a titanium metallocene catalyst [mmol catalyst / 100 g butadiene ratio: 0.45] controlling the temperature (90 ° C), pressure (10 Kg / cm 2 ) and hydrogen consumption rate during hydrogenation.
- a titanium metallocene catalyst [mmol catalyst / 100 g butadiene ratio: 0.45] controlling the temperature (90 ° C), pressure (10 Kg / cm 2 ) and hydrogen consumption rate during hydrogenation.
- VULCANIZED COMPOUND SEBS (100) phr +
- the technique of "compounding" used for the preparation of the different formulations is the dynamic vulcanization in a single stage in a twin screw extruder.
- the rising temperature profile is set between 180-205 ° C and the spindle speed of 150 rpm so that we ensure mixing and vulcanization in the first and second half of the extruder, respectively.
- the method selected for the determination of the recovery capacity of the material is that of "compression set” according to ASTM D395 82 (method B: "compression set” under constant deformation)
- EXAMPLE 2 SEBS-2
- cyclohexane (5638 g) is introduced as solvent, styrene (810 g of 25% solution) and butadiene (10 ml) as comonomers, n-butyl lithium as initiator and polar modifier (1, 2 - diethoxypropane) in concentration (200 ppm) sufficient to reach vinyl and target block levels.
- the polymerization is allowed to proceed at a temperature of 70 ° C and with a total stage time never exceeding 35 minutes, controlling the temperature peak associated with the polymerization of styrene.
- butadiene (619 g) is added to the reactor and the polymerization is allowed to take place for a period of time determined for 10 minutes after the maximum temperature peak.
- styrene 810 g of 25% weight solution
- butadiene 10 ml
- the live chains are terminated by incorporating a proton donor substance (BHT) into the reaction medium.
- BHT proton donor substance
- hydrogenation is carried out in the presence of a titanium metallocene catalyst [mmol catalyst / 100 g butadiene ratio: 0.45] controlling the temperature (90 ° C), pressure (10 Kg / cm 2 ) and hydrogen consumption rate during hydrogenation.
- Styrene block (%) 99.8 97.6 79.0
- VULCANIZED COMPOUND SEBS (100) phr + PP (25) phr + OIL (100) phr + PEROXIDE (3) phr + TAIC (3) phr
- cyclohexane 5526 g is introduced as solvent, styrene (1292 g of 25% solution) and butadiene (10 ml) as comonomers, n-butyl lithium as initiator and polar modifier (1, 2 - diethoxypropane) in sufficient concentration (200 ppm) to reach the levels of vinyl and target block.
- the polymerization is allowed to proceed at a temperature of 65 ° C and with a total stage time never exceeding 30 minutes, controlling the temperature peak associated with the polymerization of styrene.
- butadiene (675 g) is added to the reactor and the polymerization is allowed to take place for a period of time determined for 10 minutes after the maximum temperature peak.
- the coupling agent silicon tetrachloride
- the coupling reaction is allowed to take place at a temperature in the range 70-90 ° C for a time of 30 minutes.
- the live chains are terminated by incorporating a proton donor substance (BHT) into the reaction medium.
- hydrogenation is carried out in the presence of a titanium metallocene catalyst [mmol catalyst / 100 g butadiene ratio: 0.45] controlling the temperature (90 ° C), pressure (10 Kg / cm 2 ) and hydrogen consumption rate during hydrogenation.
- a titanium metallocene catalyst [mmol catalyst / 100 g butadiene ratio: 0.45] controlling the temperature (90 ° C), pressure (10 Kg / cm 2 ) and hydrogen consumption rate during hydrogenation.
- VULCANIZED COMPOUND SEBS (100) phr + PP (25) phr + OIL (100) phr + PEROXIDE (3) phr + TAIC (3) phr
- EXAMPLE 4 SEBS-4 In a stirred reactor (CSTR), cyclohexane (5680 g) is introduced as solvent, styrene (685 g of 25% weight solution) as monomer, n-butyl lithium as initiator and polar modifier (ditetrahydrofuryl propane) in concentration (100 ppm) sufficient to reach vinyl and target block levels.
- CSTR stirred reactor
- styrene 685 g of 25% weight solution
- n-butyl lithium as initiator
- polar modifier ditetrahydrofuryl propane
- butadiene (699 g) is added to the reactor and the polymerization is allowed to take place for a period of time determined for 10 minutes after the maximum temperature peak.
- styrene is incorporated (685 g of 25% solution by weight).
- live chains are terminated by incorporating a proton donor substance (BHT) into the reaction medium.
- BHT proton donor substance
- VULCANIZED COMPOUND SEBS (100) phr + PP (25) phr + OIL (100) phr + PEROXIDE (3) phr + TAIC (3) phr
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Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT97444236T PT2489688E (pt) | 2009-10-16 | 2009-10-16 | Borracha hidrogenada com propriedades melhoradas a alta temperatura |
US13/501,225 US8680195B2 (en) | 2009-10-16 | 2009-10-16 | Hydrogenated rubber grade for the improvement of high-temperature properties |
CN200980161980.0A CN102612527B (zh) | 2009-10-16 | 2009-10-16 | 具有改善的高温特性的氢化橡胶 |
PL09744423T PL2489688T3 (pl) | 2009-10-16 | 2009-10-16 | Kauczuk uwodorniony o ulepszonych właściwościach w wysokiej temperaturze |
JP2012533659A JP5739436B2 (ja) | 2009-10-16 | 2009-10-16 | 高温特性を向上させるための水素化されているゴム等級品 |
ES09744423.6T ES2534503T3 (es) | 2009-10-16 | 2009-10-16 | Caucho hidrogenado con propiedades mejoradas a alta temperatura |
RU2012120253/05A RU2554582C2 (ru) | 2009-10-16 | 2009-10-16 | Марка гидрированного вулканизата для улучшения высокотемпературных свойств |
MX2012004402A MX2012004402A (es) | 2009-10-16 | 2009-10-16 | Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura. |
PCT/ES2009/070444 WO2011045450A1 (es) | 2009-10-16 | 2009-10-16 | Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura |
CA2777674A CA2777674C (en) | 2009-10-16 | 2009-10-16 | Hydrogenated rubber with improved high-temperature properties |
BR112012009427-0A BR112012009427B1 (pt) | 2009-10-16 | 2009-10-16 | Composição termoplástica elastomérica; co-polímero bloco estireno-butadieno hidrogenado linear ou radial; procedimento de obtenção da composição e produto obtido pela mesma |
EP09744423.6A EP2489688B1 (en) | 2009-10-16 | 2009-10-16 | Hydrogenated rubber with improved high-temperature properties |
DK09744423.6T DK2489688T3 (en) | 2009-10-16 | 2009-10-16 | Hydrogenated rubber with improved high temperature properties |
TW099135332A TWI427115B (zh) | 2009-10-16 | 2010-10-15 | 彈性熱塑性組成物 |
Applications Claiming Priority (1)
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PCT/ES2009/070444 WO2011045450A1 (es) | 2009-10-16 | 2009-10-16 | Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura |
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WO2011045450A1 true WO2011045450A1 (es) | 2011-04-21 |
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PCT/ES2009/070444 WO2011045450A1 (es) | 2009-10-16 | 2009-10-16 | Grado de caucho hidrogenado para la mejora de propiedades a alta temperatura |
Country Status (14)
Country | Link |
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US (1) | US8680195B2 (es) |
EP (1) | EP2489688B1 (es) |
JP (1) | JP5739436B2 (es) |
CN (1) | CN102612527B (es) |
BR (1) | BR112012009427B1 (es) |
CA (1) | CA2777674C (es) |
DK (1) | DK2489688T3 (es) |
ES (1) | ES2534503T3 (es) |
MX (1) | MX2012004402A (es) |
PL (1) | PL2489688T3 (es) |
PT (1) | PT2489688E (es) |
RU (1) | RU2554582C2 (es) |
TW (1) | TWI427115B (es) |
WO (1) | WO2011045450A1 (es) |
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WO2011162257A1 (ja) * | 2010-06-22 | 2011-12-29 | 三菱化学株式会社 | 医療用ゴム栓 |
KR102665102B1 (ko) * | 2015-07-24 | 2024-05-09 | 다이나솔 엘라스토메로스, 에스.에이.유. | Tpe 조성물 내 개선된 성능을 가지는 수소화 고무 |
JP6602150B2 (ja) * | 2015-10-16 | 2019-11-06 | 株式会社ブリヂストン | 多元共重合体、ゴム組成物、架橋ゴム組成物、及びゴム物品 |
JP6637716B2 (ja) * | 2015-10-16 | 2020-01-29 | 株式会社ブリヂストン | 多元共重合体、ゴム組成物、架橋ゴム組成物及びゴム物品 |
WO2017064862A1 (ja) * | 2015-10-16 | 2017-04-20 | 株式会社ブリヂストン | 多元共重合体、ゴム組成物、架橋ゴム組成物、及びゴム物品 |
EP3363826A4 (en) * | 2015-10-16 | 2019-03-13 | Bridgestone Corporation | MULTI-COMPONENT COPOLYMER, RESIN COMPOSITION, RETICULATED RESIN COMPOSITION, AND ARTICLE |
US10550216B2 (en) | 2015-10-16 | 2020-02-04 | Bridgestone Corporation | Multi-component copolymer, rubber composition, crosslinked rubber composition and rubber article |
CN105524474A (zh) * | 2016-01-29 | 2016-04-27 | 东莞市盛家橡塑科技有限公司 | 一种用于握把的热塑性弹性体原料及其制造方法 |
US20200199334A1 (en) * | 2018-12-20 | 2020-06-25 | Dynasol Elastómeros, S.A. De C.V. | Dual Composition Block Copolymers |
RU2706314C1 (ru) * | 2018-12-28 | 2019-11-15 | Общество с ограниченной ответственностью "ХТК" | Термопластичная резина с пониженной остаточной деформацией при сжатии |
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EP1304356A1 (en) | 2001-10-19 | 2003-04-23 | Riken Technos Corporation | Thermoplastic elastomer composition, and formed article and composite formed article using the same |
EP1894974A1 (en) * | 2006-08-28 | 2008-03-05 | Kraton Polymers Research B.V. | Block copolymer compositions for moulded articles |
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RU2012120253A (ru) | 2013-11-27 |
CA2777674A1 (en) | 2011-04-21 |
US8680195B2 (en) | 2014-03-25 |
JP5739436B2 (ja) | 2015-06-24 |
EP2489688B1 (en) | 2015-01-14 |
MX2012004402A (es) | 2012-08-23 |
JP2013507515A (ja) | 2013-03-04 |
TW201120127A (en) | 2011-06-16 |
CN102612527B (zh) | 2014-02-26 |
TWI427115B (zh) | 2014-02-21 |
DK2489688T3 (en) | 2015-02-09 |
PT2489688E (pt) | 2015-03-19 |
EP2489688A1 (en) | 2012-08-22 |
US20120270991A1 (en) | 2012-10-25 |
RU2554582C2 (ru) | 2015-06-27 |
CA2777674C (en) | 2016-06-14 |
ES2534503T3 (es) | 2015-04-23 |
CN102612527A (zh) | 2012-07-25 |
BR112012009427B1 (pt) | 2019-07-30 |
PL2489688T3 (pl) | 2015-06-30 |
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