WO2017142172A1 - 고무질 중합체와 이의 제조방법, 그라프트 공중합체 및 열가소성 수지 조성물 - Google Patents
고무질 중합체와 이의 제조방법, 그라프트 공중합체 및 열가소성 수지 조성물 Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
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- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F136/06—Butadiene
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- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
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- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/28—Emulsion polymerisation with the aid of emulsifying agents cationic
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- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/10—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl-aromatic monomers
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- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with nitriles
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- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/14—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen
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- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/04—Vinyl aromatic monomers and nitriles as the only monomers
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08F2810/00—Chemical modification of a polymer
- C08F2810/20—Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently
Definitions
- the present disclosure relates to a rubbery polymer, a method for preparing the same, a graft copolymer and a thermoplastic resin composition including the same, and more particularly, in a polymerization including a conjugated diene monomer, a crosslinking agent, a molecular weight modifier, and an emulsifier, a crosslinking agent, an emulsifying agent, and By controlling the content, timing and type of the molecular weight modifier, a rubbery polymer having a large diameter and a small-diameter rubbery polymer formed in a desired ratio, a graft copolymer having excellent surface gloss and mechanical properties, and a thermoplastic resin composition can be provided. It relates to a rubbery polymer and a method for preparing the same, graft copolymer and thermoplastic resin composition comprising the same.
- thermoplastic resins have relatively good physical properties such as impact resistance, mechanical strength, moldability, glossiness, etc., and thus are widely used in electrical parts, electronic parts, office equipment, automobile parts, and the like.
- ABS resins as the thermoplastic resin include, as a main component, a rubbery polymer represented by polybutadiene having excellent rubber properties as an impact modifier.
- the rubbery polymer may be prepared by emulsion polymerization, and a graft copolymer and a thermoplastic resin composition including the same may be provided by mixing and graft-reacting an aromatic vinyl compound and a vinylcyan compound to the rubbery polymer.
- Emulsion polymerization is easy to modify the prescription according to the required quality level at the same time through a variety of matrix resin (SA, PC, PBT, PVC, etc.) and additives (flame retardant, through the extrusion process using a product produced in powder form) Weathering stabilizer, antistatic agent, antibacterial, etc.) when kneading has the advantage of manufacturing a variety of products.
- SA matrix resin
- PC PC, PBT, PVC, etc.
- additives flame retardant, through the extrusion process using a product produced in powder form
- the polymerization time and the particle diameter of the rubbery polymer are closely related, and it takes a long time to polymerize the rubbery polymer having a large particle size.
- a method of adding a small amount of an emulsifier and a vinyl cyan compound or the like before the start of polymerization or a method of continuously adding the emulsifier has been proposed. Nevertheless, the reaction time is still longer than 30 hours, there is a disadvantage in low productivity.
- thermoplastic resin composition using a graft copolymer comprising a rubbery polymer having a large particle size prepared according to the conventional method has a disadvantage in that not only the surface glossiness rises but also the drop in low temperature impact strength is severe.
- thermoplastic resin composition is prepared by mixing a large-diameter rubber polymer and a small-diameter rubber polymer for the purpose of improving this, it shows high surface gloss with relatively high low-temperature impact strength, Since the rubber polymer is separately prepared and then mixed, the process is complicated and the cost is increased, and the particle diameter is limited by the small diameter rubber polymer used from the beginning of the reaction.
- Patent Document Korean Registered Patent No. 0749657
- the present invention includes a conjugated diene monomer, a crosslinking agent, a molecular weight regulator and an emulsifier, and in the polymerization, by controlling the content, timing and type of the crosslinker, monomer, emulsifier and molecular weight regulator It is possible to polymerize to form a desired ratio of large diameter rubber polymer and small diameter rubber polymer at a specific point in time during the manufacture of the large diameter rubber polymer, and to provide improved surface gloss and mechanical properties when included in the graft copolymer and the thermoplastic resin composition. It is an object to provide a method for producing a rubbery polymer.
- Another object of the present disclosure is to provide a rubbery polymer in which a large-diameter rubbery polymer and a small-diameter rubbery polymer are formed in a desired ratio according to the method for preparing the rubbery polymer.
- Still another object of the present disclosure is to provide a graft copolymer including the rubbery polymer and a thermoplastic resin composition including the graft copolymer and capable of providing excellent surface gloss and mechanical properties.
- the present invention is polymerized including a conjugated diene monomer, a crosslinking agent, a molecular weight regulator and an emulsifier,
- the crosslinking agent is represented by Formula 1
- R 1 is hydrogen or an alkyl group selected from 1 to 3 carbon atoms
- R 2 is an alkylene group selected from carbon atoms 1 to 4
- R 3 is an alkylene group independently selected from carbon atoms 1 to 3
- R 4 is 1 to 3 carbon atoms
- An alkyl group selected from 3 l is an integer from 0 to 2
- n is an integer from 4 to 15
- m is an integer from 3 or 4
- m and n are multiplied from 12 to 60.
- the molecular weight modifier is added to 0.01 to more than 0.25 parts by weight at a polymerization conversion rate of 40% to 75%,
- the emulsifier provides a method for producing a rubbery polymer, characterized in that the polymerization of 50% to 85% in the polymerization conversion rate of the emulsifier below the critical micelle concentration (CMC) of 150 mg / L.
- CMC critical micelle concentration
- the substrate also includes an in-situ bimodal rubbery polymer having an average particle diameter of 2,600 to 5,000 kPa and 20 to 70 nm,
- a weight ratio of the rubbery polymer portion having an average particle diameter of 2,600 to 5,000 mm 3 and the rubbery polymer portion of the average particle diameter of 20 to 70 nm provides 98: 2 to 99.9: 0.1.
- the present invention is a graft copolymer of vinyl cyan monomer-conjugated diene rubber-aromatic vinyl monomer, wherein the conjugated diene rubber is 40 to 70% by weight; The aromatic vinyl monomer is 20 to 50% by weight; And the vinyl cyan monomer is 10 to 40% by weight, the conjugated diene rubber provides a graft copolymer, characterized in that the rubbery polymer.
- the substrate is 5 to 70% by weight of the graft copolymer; And it provides a thermoplastic resin composition comprising 30 to 95% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer.
- a large diameter rubbery polymer and a small diameter are controlled by controlling the content, timing and type of crosslinking agent, emulsifier and molecular weight modifier.
- the method for producing a rubbery polymer according to the present invention includes a large-diameter rubbery polymer and a small diameter by controlling the content, the timing and type of the crosslinking agent, the emulsifier and the molecular weight regulator in polymerization, including a conjugated diene monomer, a crosslinking agent, a molecular weight regulator and an emulsifier.
- Method for producing the rubbery polymer is polymerized, including, for example, conjugated diene monomer, crosslinking agent, molecular weight regulator and emulsifier,
- the crosslinking agent is represented by Formula 1
- R 1 is hydrogen or an alkyl group selected from 1 to 3 carbon atoms
- R 2 is an alkylene group selected from carbon atoms 1 to 4
- R 3 is an alkylene group independently selected from carbon atoms 1 to 3
- R 4 is 1 to 3 carbon atoms
- An alkyl group selected from 3 l is an integer from 0 to 2
- n is an integer from 4 to 15
- m is an integer from 3 or 4
- m and n are multiplied from 12 to 60.
- the molecular weight modifier is added to 0.01 to more than 0.25 parts by weight at a polymerization conversion rate of 40% to 75%,
- the emulsifier is characterized in that it is added at 50% to 85% of the polymerization conversion to an emulsifier of less than 150 mg / L of the critical micelle concentration (CMC).
- CMC critical micelle concentration
- the conjugated diene monomer is, for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene, isoprene, chloroprene, piperylene, etc. It may be at least one selected from the group consisting of.
- the conjugated diene monomer may be divided into a multi-stage, for example, before the start of the polymerization, it may be separately divided into the polymerization conversion rate of 30% to 40%, and polymerization conversion rate of 60% to 70%, respectively. By injecting in multiple stages depending on the timing of the polymerization conversion, a rubbery polymer having an appropriate particle size can be easily formed.
- the polymerization may further include an aromatic vinyl monomer, a vinyl cyan monomer or both.
- the aromatic vinyl monomer may be at least one selected from the group consisting of styrene, ⁇ -methylstyrene, m-methylstyrene, p-methylstyrene, p-tert-butylstyrene, and the like.
- the vinyl cyan compound may be at least one monomer selected from the group consisting of acrylonitrile, methyl acrylonitrile, ethyl acrylonitrile, isopropyl acrylonitrile, and the like.
- the conjugated diene monomer may be, for example, 55 to 99.8 wt%, 55 to 95 wt%, or 60 based on the total weight of the total monomers used.
- the aromatic vinyl monomer may be included, for example, 0.1 to 40% by weight, 1.5 to 22.5%, or 5 to 20% by weight
- the vinyl cyan monomer is, for example, 0.1 to 40% by weight. It may be included in%, 2.5 to 22.5% by weight, or 5 to 20% by weight, there is an excellent effect of polymerization stability, mechanical properties, gloss properties within this range.
- the polymerization is, for example, 60 to 75 parts by weight of a conjugated diene monomer, 0.05 to 3 parts by weight of an emulsifier, 0.01 to 1 parts by weight of an initiator, 0.01 to 3 parts by weight of an electrolyte, 0.1 to 1 parts by weight of a molecular weight regulator, and 30 to ion exchanged water. Including 200 parts by weight may be initiated under 65 to 70 °C, or 66 to 70 °C, in this case can provide the effect of performing a polymerization of sufficient conjugated diene monomer.
- the initiator is, for example, potassium persulfate, sodium persulfate, ammonium persulfate, cumene hydroperoxide, diisopropylbenzenehydroperoxide, azobisisobutyronitrile, tertiary butylhydroperoxide, paramethane hydroperoxide and It may be at least one selected from the group consisting of benzoyl peroxide.
- the redox catalyst of sodium formaldehyde sulfoxylate, sodium ethylenediamine tetraacetate, ferrous sulfate, textrose, sodium pyrroline, and sodium sulfite can be used.
- the initiator may be included in an amount of 0.01 to 1 part by weight, 0.01 to 0.7 part by weight, or 0.2 to 0.4 part by weight based on 100 parts by weight of the total monomers used in the polymerization, and has an effect of efficiently performing polymerization within this range. have.
- the electrolyte is, for example, KCl, NaCl, KHCO 3 , NaHCO 3 , K 2 CO 3 , Na 2 CO 3 , KHSO 3 , NaHSO 3 , Na 2 S 2 O 7 , K 4 P 2 O 7 , K 3 PO 4 , It may be at least one selected from the group consisting of Na 3 PO 4 , K 2 HPO 4 and Na 2 HPO 4 .
- the electrolyte may be included in an amount of 0.01 to 3 parts by weight, or 0.2 to 3 parts by weight based on 100 parts by weight of the total monomers used in the polymerization.
- the emulsifier may not be specific to the CMC value, for example, sulfonated alkylesters including sodium lauryl sulfate with a CMC of 530 mg / L, sodium alkylbenzene sulfonate, sodium dodecyl allyl sulfosuccinate, sodium Acrylamido stearate, polyoxyethylene alkyl ether sulfate ammonium salt, alkenyl succinic acid di-potassium salt of 16 to 18 carbon atoms, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylphenyl ether ammonium sulfate, potassium rosin acid, rosin At least one selected from the group consisting of sodium acid, fatty acid soap, potassium oleate and sodium oleate.
- sulfonated alkylesters including sodium lauryl sulfate with a CMC of 530 mg / L, sodium alkylbenzene sulfon
- the emulsifier may be included in 0.05 to 3 parts by weight or 1 to 3 parts by weight based on 100 parts by weight of the total monomer used in the polymerization, there is an effect of performing the emulsion polymerization effectively within this range.
- the molecular weight modifier added before the start of polymerization may be, for example, one or more selected from the group consisting of n-decyl mercaptan, n-dodecyl mercaptan, t-dodecyl mercaptan, and n-octadecyl mercaptan.
- the molecular weight modifier added before the start of polymerization may be included, for example, in an amount of 0.1 to 1 part by weight or 0.1 to 0.5 part by weight based on 100 parts by weight of the total monomers used in the polymerization.
- Cross-linking agent added in the polymerization initiated before or polymerization conversion 30% or less in the base material is one example, in the formula 1, wherein R 1 is H or CH 3, and R 2 is C 2 H 4 or C 3 H 6, R 3 Is CH 2 , R 4 is C 2 H 5 , l is an integer from 0 to 2, n is an integer from 4 to 15, m is an integer from 3 or 4, and m and n are multiplied by 12 It is preferred to be from 60 to 60 to provide surface gloss and mechanical properties.
- R 1 is H or CH 3
- R 2 is C 2 H 4 or C 3 H 6
- R 3 is CH 2
- R 4 is C 2 H 5
- l is It is an integer of 0 to 1
- n is an integer of 4 to 10
- m is an integer of 3 or 4
- m and n multiplied by 12 to 40 will provide excellent surface gloss and mechanical properties improvement effect. It is preferable to be able.
- R 1 is H or CH 3
- R 2 is C 2 H 4 or C 3 H 6
- R 3 is CH 2
- R 4 is C 2 H 5
- l is An integer of 0 to 1
- n is an integer of 4 to 10
- m is 3
- the multiplied m and n may be 12 to 30, within this range to improve the surface gloss and mechanical properties and polymerization stability
- the improvement effect is excellent, especially the impact strength improvement effect can be excellent. In this case, when the product of m and n is 15, the impact strength is improved and the rubber latex stability is maximized.
- the crosslinking agent may be included in an amount of 0.05 to 0.5 parts by weight, or 0.1 to 0.35 parts by weight based on 100 parts by weight of the total monomers used in the polymerization, and has excellent effects such as surface gloss and mechanical properties within this range.
- the content of the crosslinking agent is less than 0.05 parts by weight, the impact strength increase effect may be insignificant or hardly generated.
- the content of the crosslinking agent is more than 0.5 parts by weight, the rubber latex stability may be reduced.
- 10 to 20 parts by weight of the conjugated diene monomer and 0.1 to 1.0 parts by weight of an emulsifier may be batch or continuously added at a polymerization conversion rate of 30% to 40%.
- the polymerization may be polymerized at 72 to 75 ° C., or 72 to 74 ° C., and in this case, the polymerization may be performed by increasing the temperature conditions as the polymerization proceeds relative to the polymerization initiation temperature, thereby providing an effect of improving the polymerization efficiency. have.
- the emulsifier may not be specific to the CMC value, for example including sulfonated alkylesters, sodium alkylbenzene sulfonates, sodium dodecyl allyl sulfosuccinates, including, for example, sodium lauryl sulfate with a CMC of 530 mg / L , Sodium acrylamido stearate, polyoxyethylene alkyl ether sulfate ester ammonium salt, alkenyl succinic acid di-potassium salt of 16 to 18 carbon atoms, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylphenyl ether ammonium sulfate, potassium rosin It may be one or more selected from the group consisting of sodium rosin acid, fatty acid soap, potassium oleate and sodium oleate.
- the emulsifier may be included in an amount of 0.1 to 1 part by weight or 0.1 to 0.5 part by weight based on 100 parts by weight of the total monomers used in the polymerization, and has an effect of effectively performing emulsion polymerization within this range.
- the molecular weight modifier introduced at 40% to 75%, preferably 45% to 65% of the polymerization conversion rate is, for example, n-octyl mercaptan, sec-octyl mercaptan, n-nonyl mercaptan, n-decyl mercaptan. , n-dodecyl mercaptan, t-dodecyl mercaptan, and n-octadecyl mercaptan.
- the molecular weight modifier may be included in an amount of 0.01 parts by weight to less than 0.25 parts by weight, 0.01 to 0.15 parts by weight, or 0.1 to 0.15 parts by weight, based on 100 parts by weight of the total monomers used in the polymerization. It has the effect of giving high mechanical properties without lowering the reaction rate.
- the materials in the order of tert, iso and normal are added before the start of the polymerization. It is preferable to add the remaining material at a polymerization conversion rate of 40% to 75% after the reaction rate and the polymerization stability effect.
- TDDM t-dodecyl mercaptan
- NDDM n-dodecyl mercaptan
- DM decyl mercaptan
- separately adding an emulsifier having a CMC of 150 mg / L or less at a polymerization conversion rate of 50% to 85% may provide an effect of improving polymerization stability and improving polymerization rate and improving surface glossiness of a thermoplastic resin. have.
- the emulsifier of CMC 150 mg / L or less may include an emulsifier having a CMC of 10 mg / L or less, or an emulsifier having a CMC of more than 10 to 150 mg / L or less.
- the emulsifier having a CMC of 10 mg / L or less may be added in an amount of 0.01 to 0.3 parts by weight, or 0.1 to 0.3 parts by weight based on 100 parts by weight of the total monomers used for polymerization at a polymerization conversion rate of 60% to 85%.
- the emulsifier having a CMC of 10 mg / L or less include, for example, alkenyl succinate dipotassium salt of 16 to 18 carbon atoms, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylphenyl ether ammonium sulfate and the like.
- the emulsifier having a CMC greater than 10 to 150 mg / L may be added in an amount of 0.05 parts by weight to 0.5 parts by weight, or 0.1 to 0.4 parts by weight based on 100 parts by weight of the total monomers used in the polymerization at 50% to 85% of the polymerization conversion rate. Can be.
- the emulsifier having a CMC of more than 10 to 150 mg / L may include fatty acid soap or potassium oleate and sodium oleate.
- the critical micelle concentration is measured by a surface tension meter and is confirmed by measuring the surface tension while changing the concentration of the emulsifier in distilled water.
- the emulsifier may be included in an amount of 0.01 to 0.5 parts by weight, or 0.1 to 0.5 parts by weight based on 100 parts by weight of the total monomers used in the polymerization.
- the formation rate of small diameters increases, resulting in a decrease in physical properties, such as a decrease in the impact strength compared with the existing particle size, and an increase in viscosity during the polymerization process. It may lower the stability of the reaction.
- the ratio of the resulting small diameter may be insignificant, or may be difficult to express the intended effect to be used to stabilize the existing particle size.
- the conversion rate of the emulsifier when the conversion rate of the emulsifier is lower than, for example, less than 50%, the small-diameter rubber latex production rate may increase, so that it may be difficult to expect a high glossiness and a low decrease in low-temperature impact strength, and the conversion rate of the emulsifier is greater than 85%, for example.
- the ratio of the small diameter produced may be insignificant, or it may be difficult to express the intended effect to be used in the stabilization of the existing particle size.
- the emulsifier contains an emulsifier having a high CMC, such as more than 150 mg / L (ex. CMC 530 mg / L sodium lauryl sulfate) it is not easy to prepare a large diameter rubber latex and a small diameter rubber latex at the same time not.
- a high CMC such as more than 150 mg / L (ex. CMC 530 mg / L sodium lauryl sulfate)
- 5 to 30 parts by weight of the conjugated diene monomer and 0 to 1 part by weight of the emulsifier may be batch or continuous at a polymerization conversion rate of 60% to 70%.
- the polymerization may be polymerized, for example, at 80 to 85 ° C. or 81 to 84 ° C., in which case the polymerization is carried out while gradually increasing the temperature as the polymerization proceeds at a polymerization initiation and polymerization conversion rate of 30% to 40%. By carrying out, sufficient polymerization efficiency can be provided.
- the emulsifier is, for example, sulfonated alkyl ester, sodium lauryl sulfonate, sodium alkylbenzene sulfonate, sodium dodecyl allyl sulfosuccinate, sodium acrylamido stearate, polyoxyethylene alkyl ether sulfate ester ammonium salt, carbon number 1 to 18 selected from the group consisting of alkenyl succinic acid di-potassium salt, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylphenylether ammonium sulfate, potassium rosinate, sodium rosinate, fatty acid soap, potassium oleate and sodium oleate It may be more than one species.
- the emulsifier may be included in 0 to 1 parts by weight, 0.1 to 1 parts by weight or 0.1 to 0.5 parts by weight based on 100 parts by weight of the total monomer used in the polymerization, there is an effect of performing the emulsion polymerization effectively within this range.
- the ion-exchanged water may be polymerized to include 30 to 200 parts by weight, 50 to 150 parts by weight, or 50 to 100 parts by weight based on a total of 100 parts by weight of the conjugated diene monomer used in the polymerization, for example.
- the efficiency can be improved.
- the rubber polymer production method may, for example, polymerize at a polymerization conversion rate of 92% or more, or 92.5% or more, and has an effect of excellent productivity within this range.
- 0.05 to 0.5 parts by weight of the crosslinking agent represented by Formula 1 is added before the start of polymerization or 30% or less of polymerization conversion, and 40% to 75% of polymerization conversion separately from the molecular weight regulator which is added before the start of polymerization.
- Mercaptans molecular weight modifier having an alkyl group of 8 or more carbon atoms at less than 0.01 parts by weight to less than 0.25 parts by weight, and about 0.01 parts by weight to 0.5 parts by weight of an emulsifier having a low CMC at a polymerization conversion rate of 50% to 85% of the polymerization reaction. This can bring about a change in physical properties in the thermoplastic resin.
- the large-diameter rubber latex and the small-diameter rubber latex can be prepared at the same time to increase the polymerization conversion rate can suppress the increase in the gel content.
- small-diameter latex can be observed on the rubber latex in TEM analysis photos or particle size measurement equipment, but does not show a difference in the average particle size.
- the rubbery polymer of the present disclosure includes, for example, an in-situ bimodal rubbery polymer having an average particle diameter of 2,600 to 5,000 mm 3, or 3,000 to 3,500 mm and 20 to 70 nm, or 30 to 70 nm.
- the weight ratio of the rubbery polymer portion having a particle diameter of 2,600 to 5,000 mm 3 and the rubbery polymer portion of the average particle diameter of 20 to 70 nm may be 98: 2 to 99.9: 0.1, or 98: 2 to 99: 1, and within this range Eliminating the limitations and graft copolymers provide polymerization stability while providing excellent surface gloss and mechanical properties.
- the in-situ bimodal rubbery copolymer refers to a rubbery polymer that has been bimodal by a single polymerization reaction, and is distinguished from physically mixing two rubbery copolymers having different average particle diameters.
- the rubbery polymer may be, for example, 70 to 84% by weight, or 72 to 80% by weight of a gel content indicating the degree of crosslinking in the polymer, that is, the degree of crosslinking of the polymer, and the higher the gel content value, the higher the degree of crosslinking of the polymer.
- the rubbery polymer may be, for example, one having a coagulant content of 0.01 to 0.7% by weight, or 0.01 to 0.5% by weight, and may provide excellent polymerization stability within this range.
- the vinylcyan monomer-conjugated diene rubber-aromatic vinyl monomer graft copolymer of the present disclosure is, for example, 40 to 70% by weight, or 45 to 70% by weight of the conjugated diene rubber;
- the aromatic vinyl monomer is 20 to 50% by weight, or 20 to 30% by weight;
- the vinyl cyan monomer is 10 to 40% by weight, or 10 to 20% by weight, the conjugated diene rubber is characterized in that the rubbery polymer, within this range, such as surface gloss and impact strength and low temperature impact strength It can provide the effect that the mechanical properties are improved.
- the copolymer may have a graft ratio of 25 to 55%, or 30 to 45%, and may provide an effect of improving polymerization stability, surface gloss, and mechanical properties within this range.
- the graft copolymer may be, for example, a graft polymerized copolymer further including an emulsifier, an initiator, a molecular weight modifier, and a redox catalyst.
- the emulsifier, the initiator, the molecular weight modifier and the redox-based catalyst are not particularly limited as long as they are used in the manufacture of the graft copolymer, and can be selected and used as necessary.
- the emulsifier is, for example, sodium lauryl sulfate, sulfonated alkyl ester, sodium alkylbenzene sulfonate, sodium dodecyl allyl sulfosuccinate, sodium acrylamido stearate, polyoxyethylene alkyl ether sulfate ester ammonium salt, 16 carbon atoms 1 type selected from the group consisting of alkenyl succinic acid di-potassium salt, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylphenylether ammonium sulfate, potassium rosin, sodium rosin, fatty acid soap, potassium oleate and sodium oleate It may be abnormal.
- the emulsifier may be used in the range of 0.1 to 3 parts by weight.
- the redox catalyst may be at least one selected from the group consisting of ferrous sulfate, dextrose, sodium pyrrole phosphate, sodium sulfite, sodium formaldehyde sulfoxylate, and sodium ethylenediaminetetraacetate.
- the redox-based catalyst may be 0.0001 to 0.002 parts by weight of ferrous sulfate, 0.01 to 0.2 parts by weight of dextrose, and 0.01 to 0.001 parts by weight of sodium pyrrole phosphate.
- additives such as chelating agents, dispersing agents, pH adjusting agents, deoxygenating agents, particle size adjusting agents, anti-aging agents and oxygen scavengers may be additionally used, if necessary. To 85 ° C.
- the graft copolymer of the present disclosure may be, for example, agglomerated, aged, dehydrated, and dried to provide the graft copolymer powder.
- the flocculation, maturing, dehydration and drying methods are typically carried out in graft polymerization.
- the method is not particularly limited.
- the agglomeration agent may add an antioxidant to the latex.
- an antioxidant effect may be maximized without degrading other physical properties.
- thermoplastic resin composition of the present substrate is characterized by including the graft copolymer of the present substrate.
- thermoplastic resin composition is, for example, the graft copolymer; And a copolymer of an aromatic vinyl compound-vinyl cyan compound.
- the graft copolymer may be, for example, 5 to 70 wt% or 20 to 60 wt%; And it may be 30 to 95% by weight or 40 to 80% by weight of the aromatic vinyl compound-vinyl cyan compound copolymer, there is an excellent mechanical properties and gloss properties within this range.
- the aromatic vinyl compound-vinyl cyan compound copolymer may have, for example, a weight average molecular weight of 80,000 to 150,000 g / mol, 90,000 to 130,000 g / mol, or 100,000 to 120,000 g / mol, and graft copolymer within this range. Excellent kneading with, it has an excellent gloss, surface properties and workability.
- the aromatic vinyl compound-vinyl cyan compound copolymer may include, for example, 20 to 35 wt%, or 25 to 30 wt% of a vinyl cyan compound.
- thermoplastic resin composition may further include one or more selected from the group consisting of, for example, antioxidants, lubricants, and heat stabilizers.
- the antioxidant may be added in an amount of 0.05 to 5 parts by weight, 0.05 to 2 parts by weight, or 0.1 to 1 part by weight based on a total of 100 parts by weight of the copolymer of the graft copolymer and the aromatic vinyl compound-vinyl cyan compound.
- the antioxidant may be added in an amount of 0.05 to 5 parts by weight, 0.05 to 2 parts by weight, or 0.1 to 1 part by weight based on a total of 100 parts by weight of the copolymer of the graft copolymer and the aromatic vinyl compound-vinyl cyan compound.
- the antioxidant may be added before or after coagulation in the latex after the graft copolymer is polymerized. In this case, the antioxidant effect may be maximized without affecting other physical properties.
- the lubricant may be added in an amount of 0.1 to 5 parts by weight, 0.5 to 2 parts by weight, or 0.5 to 1.5 parts by weight based on 100 parts by weight of the graft copolymer and the aromatic vinyl compound-vinyl cyan compound copolymer. Within this range, the workability is maximized without affecting other physical properties.
- the thermal stabilizer may be added in an amount of 0.01 to 2 parts by weight, 0.05 to 1 parts by weight, or 0.05 to 0.5 parts by weight based on 100 parts by weight of the graft copolymer and the aromatic vinyl compound-vinyl cyan compound copolymer. In this range, thermal stability is maximized without affecting other physical properties.
- thermoplastic resin composition may have a total rubber content of 10 to 30% by weight, 15 to 25% by weight, or 15 to 20% by weight, and may include mechanical properties such as impact strength, glossiness, and surface properties within this range. Excellent effect.
- thermoplastic resin composition may be provided by melt kneading and extruding the powder of the graft copolymer and the aromatic vinyl compound-vinyl cyan compound copolymer.
- the melt kneading and extrusion method is not particularly limited when the method is usually applied during graft polymerization.
- the graft copolymer powder and the aromatic vinyl compound-vinyl cyan compound copolymer may include a lubricant, a heat stabilizer, or both, and in this case, processability without degrading other physical properties. And / or improve thermal stability.
- a molded article can be provided from the said thermoplastic resin composition.
- the molded article may be, for example, an injection molded article or an extrusion molded article.
- a nitrogen-substituted polymerization reactor 65 parts by weight of ion-exchanged water, 70 parts by weight of 1,3-butadiene as monomer, 1.5 parts by weight of potassium rosinate, 0.8 parts by weight of potassium oleate, 0.8 parts by weight of potassium carbonate, molecular weight regulator 0.3 part by weight of tertiary dodecyl mercaptan (TDDM), 0.3 part by weight of potassium persulfate (K 2 S 2 O 8 ), and 0.1 part by weight of the compound of formula 1a as a crosslinking agent were collectively administered and reacted at a reaction temperature of 70 ° C.
- TDDM tertiary dodecyl mercaptan
- K 2 S 2 O 8 potassium persulfate
- 0.1 part by weight of the compound of formula 1a as a crosslinking agent were collectively administered and reacted at a reaction temperature of 70 ° C.
- R 1 is H
- R 2 is C 2 H 4
- R 3 is CH 2
- R 4 is C 2 H 5
- l is 1
- n is 5
- m is 3
- a rubbery polymer having a gel content of 75% and a weight ratio of large-diameter rubbery polymer to small-diameter rubbery polymer (average particle size: 30-70 nm) of 98: 2 was prepared.
- the total reaction time was 21 hours and the product coagulum content was 0.03%.
- the analysis method of the rubbery polymer is as follows.
- Polymerization Conversion Rate (%) (Weights of Monomer input and Subsidiary Materials-Weight of Subsidiary Materials Extramonomer) X Total Solids Content / 100
- Gel content (% by weight) weight of insoluble content (gel) / weight of sample x 100
- Average particle diameter, and ratio of small and large diameter rubbery polymers were measured by counting analysis value by particle diameter in the TEM (JEM-1400, Jeol) analyzer.
- Solid coagulum (% by weight) (weight of product coagulum in reaction tank (g) / weight of total rubber and monomer (g)) x 100
- the analysis method of the graft copolymer latex is as follows.
- Graft Rate (wt%) (weight of graft monomer (g) / rubber weight (g)) x 100
- thermoplastic resin composition ⁇ Production of the thermoplastic resin composition>
- antioxidant IR1076 0.5 parts by weight was added to the graft copolymer latex, followed by dropping it with 2.0 parts by weight of H 2 SO 4 (10% aqueous solution) while maintaining a flocculation tank temperature of 85 ° C., followed by primary aggregation at 2 ° C. at 97 ° C. After aging, dehydration and drying yielded a powdery graft copolymer.
- n-dodecyl mercaptan 0.1 part by weight of n-dodecyl mercaptan (NDDM) was added as a molecular weight modifier at a polymerization conversion rate of 50%, and potassium oleate having 35 mg / L of CMC as an emulsifier was polymerized with a conversion rate of 58%. Except that was prepared in the same process as in Example 1 above.
- Example 1 In the preparation of the rubber polymer of Example 1, 0.1 part by weight of decyl mercaptan (DM) was added as a molecular weight modifier at a polymerization conversion rate of 53%, and potassium oleate having 35 mg / L of CMC as an emulsifier was added at a polymerization conversion rate of 62%. Except that was prepared in the same manner as in Example 1.
- DM decyl mercaptan
- Example 1 In the preparation of the rubber polymer of Example 1, 0.15 parts by weight of decyl mercaptan (DM) was added as a molecular weight control agent at a polymerization conversion rate of 56%, and potassium oleate having 35 mg / L of CMC as an emulsifier was added at a polymerization conversion rate of 58%. Except that was prepared in the same manner as in Example 1.
- DM decyl mercaptan
- Example 1 Except for introducing a crosslinking agent at a polymerization conversion rate of 30% in ⁇ Production of the rubber polymer> of Example 1 was prepared in the same manner as in Example 1.
- R 1 is H
- R 2 is C 3 H 6
- R 3 is CH 2
- R 4 is C 2 H 5
- l 2
- n 4
- m 2
- Preparation of the rubber polymer of Example 1 was prepared in the same manner as in Example 1 except that 0.25 parts by weight of a molecular weight modifier (TDDM) at 47% polymerization conversion rate, and an emulsifier at 60% polymerization conversion rate. It was.
- TDDM molecular weight modifier
- Example 1 Except for replacing the compound of Formula 1c as a crosslinking agent in ⁇ Production of rubber polymer> of Example 1, the molecular weight regulator (TDDM) at 51% polymerization conversion rate, and an emulsifier at 58% polymerization conversion rate It was prepared in the same manner as in Example 1.
- TDDM molecular weight regulator
- R 1 is H
- R 2 is C 2 H 4
- R 3 is CH 2
- R 4 is C 2 H 5
- Example 1 except that an emulsifier was added at a polymerization conversion rate of 60% and 0.1 weight part of a molecular weight modifier (TDDM) at a polymerization conversion rate of 80% instead of a 52% polymerization conversion rate in ⁇ Production of Rubber Polymer> of Example 1.
- TDDM molecular weight modifier
- Example 1 Except for not adding 0.1 parts by weight of the molecular weight modifier (TDDM) at 52% polymerization conversion rate in the ⁇ Manufacture of rubber polymer> of Example 1 was prepared in the same manner as in Example 1.
- TDDM molecular weight modifier
- Example 1 In ⁇ Production of the rubber polymer> of Example 1 was prepared in the same manner as in Example 1, except that the crosslinking agent was added at a polymerization conversion rate of 35% instead of the crosslinking agent before the start of polymerization.
- the rubber polymer of Example 1 was prepared in the same manner as in Example 1, except that 0% of the polymerization conversion rate, that is, 0.6 parts by weight of the crosslinking agent added before the polymerization was added.
- thermoplastic resin composition ⁇ Characteristics of the thermoplastic resin composition>
- Izod impact strength (kgf.cm/cm): The specimen was measured by ASTM D256 method with 1/4 "thickness.
- Example 1 21 92.7 3125 30-70 98: 2 75 0.03 98.5 38.0
- Example 2 20.5 93.1 3085 30-70 98: 2 77 0.04 98.2 37.2
- Example 3 19.5 92.8 3047 30-70 98: 2 75 0.03 97.9 36.0
- Example 4 20 92.5 3109 30-70 98: 2 78 0.03 98.6 40.1
- Example 5 20.3 92.5 3085 30-70 98: 2 80 0.04 98.1 37.2
- Comparative Example 1 20 92.1 3050 - 100: 0 81 0.02 98.5 38.1 Comparative Example 2 19.7 92.5 3100 30-70 98: 2 84 0.03 98.6 40.1 Comparative Example 3 23 91.8 3120 30-70 98: 2 72 0.05 97.5 35.7 Comparative Example 4 19 93.4 3025 30-70 98: 2
- thermoplastic resin composition prepared according to the present invention is a rubber latex containing a small diameter rubbery polymer in an appropriate ratio during the preparation of the rubbery polymer while reducing the coagulum content. It was found that by providing a graft copolymer including the same, it was confirmed that a thermoplastic resin composition having excellent mechanical properties and surface gloss was provided.
- the gel content and the coagulant content significantly increased when the amount of the crosslinking agent added was exceeded as in Comparative Example 9, so that the low temperature impact strength and impact strength were lowered.
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Abstract
Description
구분 | 고무질 중합체 | 그라프트 공중합체 | |||||||
반응시간(hr) | 전환율(%) | 입자경(Å) | 소구경(nm) | 대구경:소구경(중량비) | 겔함량(%) | 응고물(%) | 전환율(%) | 그라프트율(%) | |
실시예1 | 21 | 92.7 | 3125 | 30-70 | 98:2 | 75 | 0.03 | 98.5 | 38.0 |
실시예2 | 20.5 | 93.1 | 3085 | 30-70 | 98:2 | 77 | 0.04 | 98.2 | 37.2 |
실시예3 | 19.5 | 92.8 | 3047 | 30-70 | 98:2 | 75 | 0.03 | 97.9 | 36.0 |
실시예4 | 20 | 92.5 | 3109 | 30-70 | 98:2 | 78 | 0.03 | 98.6 | 40.1 |
실시예5 | 20.3 | 92.5 | 3085 | 30-70 | 98:2 | 80 | 0.04 | 98.1 | 37.2 |
비교예1 | 20 | 92.1 | 3050 | - | 100:0 | 81 | 0.02 | 98.5 | 38.1 |
비교예2 | 19.7 | 92.5 | 3100 | 30-70 | 98:2 | 84 | 0.03 | 98.6 | 40.1 |
비교예3 | 23 | 91.8 | 3120 | 30-70 | 98:2 | 72 | 0.05 | 97.5 | 35.7 |
비교예4 | 19 | 93.4 | 3025 | 30-70 | 98:2 | 85 | 0.05 | 98.7 | 38.5 |
비교예5 | 22 | 92 | 3085 | 30-70 | 98:2 | 79 | 0.04 | 98.1 | 36.9 |
비교예6 | 20 | 93.1 | 3150 | 30-70 | 98:2 | 80 | 0.02 | 97.8 | 39.4 |
비교예7 | 21 | 92.5 | 3075 | 30-70 | 98:2 | 78 | 0.06 | 98.4 | 38.1 |
비교예8 | 22 | 92.3 | 3008 | - | 100:0 | 75 | 0.02 | 97.9 | 38.7 |
비교예9 | 21 | 93.1 | 3056 | 30-70 | 98:2 | 83 | 0.10 | 98.3 | 37.6 |
참고예1 | 18.8 | 94.1 | 2885 | 30-70 | 96:4 | 80 | 0.03 | 98.5 | 42.0 |
구분 | 열가소성 수지 조성물 | ||
충격강도 | 광택도 | 저온 충격 | |
실시예1 | 35.7 | 93.2 | 13.2 |
실시예2 | 38.4 | 93.4 | 13 |
실시예3 | 35.2 | 94.1 | 13.4 |
실시예4 | 36.1 | 93.7 | 13.8 |
실시예5 | 35.4 | 94.1 | 13 |
비교예1 | 32 | 88.2 | 10.8 |
비교예2 | 33.7 | 93.7 | 12.7 |
비교예3 | 36 | 90.8 | 13.1 |
비교예4 | 30.7 | 94.3 | 9.8 |
비교예5 | 32.7 | 93.1 | 11.9 |
비교예6 | 32.4 | 93.4 | 11.4 |
비교예7 | 34.7 | 90.1 | 12.2 |
비교예8 | 35.1 | 90 | 11.2 |
비교예9 | 31.8 | 93.2 | 12.7 |
참고예1 | 28.9 | 96.5 | 11.5 |
Claims (22)
- 공액디엔 단량체, 가교제, 분자량 조절제 및 유화제를 포함하여 중합하되, 상기 가교제는 하기 화학식 1[화학식 1][CH2=CR1CO2(R2O)nR3]mC(R4)l(여기서 R1은 수소 혹은 탄소수 1 내지 3로부터 선택된 알킬기이고, R2는 탄소수 1 내지 4로부터 선택된 알킬렌기이고, R3는 탄소수 1 내지 3으로부터 독립적으로 선택된 알킬렌기이고, R4는 탄소수 1 내지 3으로부터 선택된 알킬기이고, l은 0 내지 2의 정수이고, n은 4 내지 15의 정수이고, m은 3 또는 4의 정수이고, 상기 m과 n은 곱한 값이 12 내지 60이다)로 표시되는 화합물로 중합 개시전 또는 중합전환율 30% 이하에서 0.05 중량부 내지 0.5 중량부로 투입하고,상기 분자량 조절제는 중합전환율 40% 내지 75%에서 0.01 중량부 이상 내지 0.25 중량부 미만으로 투입하며,상기 유화제는 임계 미셀 농도(CMC) 150 mg/L 이하의 유화제로 중합전환율 50% 내지 85%에서 투입하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 공액디엔 단량체는 중합 개시 전, 중합전환율 30% 내지 40%, 및 중합 전환율 60% 내지 70%에 각각 분할 투입되는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 중합은 방향족 비닐 단량체, 비닐시안 단량체 또는 이들 모두를로 더 포함하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 중합은, 공액디엔 단량체 60 내지 75 중량부, 유화제 0.05 내지 3 중량부, 개시제 0.02 내지 1 중량부, 전해질 0.01 내지 3 중량부, 분자량 조절제 0.1 내지 1 중량부, 및 이온교환수 30 내지 200 중량부를 포함하여 65 내지 70℃ 하에서 개시하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제4항에 있어서,상기 개시제는 과황산 칼륨, 과황산 나트륨, 과황산 암모늄, 큐멘하이드로퍼옥사이드, 디이소프로필벤젠하이드로퍼옥사이드, 아조비스이소부티로니트릴, 3급 부틸하이드로퍼옥사이드, 파라메탄하이드로퍼옥사이드 및 벤조일퍼옥사이드로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제4항에 있어서,상기 전해질은 KCl, NaCl, KHCO3, NaHCO3, K2CO3, Na2CO3, KHSO3, NaHSO3, Na2S2O7, K4P2O7, K3PO4, Na3PO4, K2HPO4 및 Na2HPO4로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제4항에 있어서,상기 분자량 조절제는 n-데실머캅탄, n-도데실머캅탄, t-도데실머캅탄, 및 n-옥타데실머캅탄으로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 화학식 1에서, R1이 H 혹은 CH3이고, R2가 C2H4 혹은 C3H6이고, R3가 CH2이고, R4가 C2H5이고, l이 0 내지 2의 정수이고, n은 4 내지 10의 정수이고, m은 3 내지 4의 정수이고, 상기 m과 n은 곱한 값이 12 내지 30인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 중합은 중합전환율 30% 내지 40%에서 공액디엔 단량체 10 내지 20 중량부 및 유화제 0.1 내지 1.0 중량부를 일괄 또는 연속 투입하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제9항에 있어서,상기 중합은 72 내지 75℃에서 수행하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 분자량 조절제는 n-옥틸머캅탄, sec-옥틸머캅탄, n-노닐머캅탄, n-데실머캅탄, n-도데실머캅탄, t-도데실머캅탄, 및 n-옥타데실머캅탄으로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 CMC 150 mg/L 이하의 유화제는 CMC가 10 mg/L 이하인 유화제 또는 CMC가 10 초과 내지 150 이하 mg/L인 유화제를 포함하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제12항에 있어서,상기 CMC가 10 mg/L 이하인 유화제는 상기 중합전환율 60% 내지 85%에서 중합에 사용된 단량체 총 100 중량부를 기준으로 0.01 내지 0.3 중량부를 투입하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제12항에 있어서,상기 CMC가 10 mg/L 이하인 유화제는 탄소수 16 내지 18의 알케닐 숙신산 이칼륨염, 폴리옥시에틸렌 알킬페닐 에테르, 및 폴리옥시에틸렌 알킬페닐에테르 암모늄 설페이트로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제12항에 있어서,상기 CMC가 10 초과 내지 150 이하 mg/L인 유화제는 상기 중합전환율 50 내지 85%에서 중합에 사용된 단량체 총 100 중량부를 기준으로 0.05 중량부 내지 0.5 중량부를 투입하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제12항에 있어서,상기 CMC가 10 초과 내지 150 이하 mg/L인 유화제는 지방산 비누, 올레인산 칼륨 및 올레인산 나트륨로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제1항에 있어서,상기 중합은, 중합전환율 60% 내지 70%에서 공액디엔 단량체 5 내지 30 중량부 및 유화제 0 내지 1 중량부를 일괄 혹은 연속 투입하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제17항에 있어서,상기 중합은 80 내지 85℃ 하에 수행하는 것을 특징으로 하는 고무질 중합체의 제조방법.
- 제4항, 제9항 또는 제18항 중 어느 한 항에 있어서,상기 유화제는 소듐라우릴 설페이트, 설포네이트화 알킬에스테르, 소듐 알킬벤젠 설포네이트, 소듐 도데실 알릴 술포숙시네이트, 소듐 아크릴아미도 스테아레이트, 폴리옥시에틸렌 알킬에테르 술페이트 에스테르 암모늄염, 탄소수 16 내지 18의 알케닐 숙신산 디-포타슘염, 폴리옥시에틸렌 알킬페닐 에테르, 폴리옥시에틸렌 알킬페닐에테르 암모늄 설페이트, 로진산 칼륨, 로진산 나트륨, 지방산 비누, 올레인산 칼륨 및 올레인산 나트륨으로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 고무질 중합체의 제조방법.
- 평균입자경이 2,600 내지 5,000Å 및 20 내지 70 nm인 인시츄(in-situ) 바이모달 고무질 중합체로서,상기 평균입자경이 2,600 내지 5,000Å인 고무질 중합체 부분과 상기 평균 입자경이 20 내지 70nm인 고무질 중합체 부분의 중량비는 98:2 내지 99.9:0.1인 것을 특징으로 하는 고무질 중합체.
- 비닐시안 단량체-공액디엔 고무-방향족 비닐 단량체의 그라프트 공중합체로서, 상기 공액디엔 고무는 40 내지 70중량%; 상기 방향족 비닐 단량체는 20 내지 50 중량%; 그리고 상기 비닐시안 단량체는 10 내지 40 중량%이며, 상기 공액디엔 고무는 제20항의 고무질 중합체인 것을 특징으로 하는 비닐시안 단량체-공액디엔 고무-방향족 비닐 단량체 그라프트 공중합체.
- 제21항의 그라프트 공중합체 5 내지 70 중량%; 및 방향족 비닐 화합물-비닐시안 화합물 공중합체 30 내지 95 중량%를 포함하는 것을 특징으로 하는 열가소성 수지 조성물.
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