WO2020060028A1 - Polymère à base de chlorure de vinyle et son procédé de production - Google Patents

Polymère à base de chlorure de vinyle et son procédé de production Download PDF

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WO2020060028A1
WO2020060028A1 PCT/KR2019/009907 KR2019009907W WO2020060028A1 WO 2020060028 A1 WO2020060028 A1 WO 2020060028A1 KR 2019009907 W KR2019009907 W KR 2019009907W WO 2020060028 A1 WO2020060028 A1 WO 2020060028A1
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vinyl chloride
equation
particle
polymerization
based polymer
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PCT/KR2019/009907
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English (en)
Korean (ko)
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이세웅
안성용
김건지
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주식회사 엘지화학
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Priority claimed from KR1020190094160A external-priority patent/KR102178879B1/ko
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to JP2020536046A priority Critical patent/JP7024093B2/ja
Priority to EP19863203.6A priority patent/EP3715387B1/fr
Priority to CN201980007218.0A priority patent/CN111542552B/zh
Priority to US16/959,779 priority patent/US11186658B2/en
Publication of WO2020060028A1 publication Critical patent/WO2020060028A1/fr

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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
    • C08F14/00—Homopolymers and 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 a halogen
    • C08F14/02—Monomers containing chlorine
    • C08F14/04—Monomers containing two carbon atoms
    • C08F14/06—Vinyl chloride
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/02—Polymerisation in bulk
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers

Definitions

  • the present invention relates to a vinyl chloride-based polymer having an excellent blendability and processability improved by controlling the surface non-uniformity of particles.
  • the vinyl chloride-based polymer is a polymer containing 50% or more of vinyl chloride, and is inexpensive, easy to control hardness, and can be applied to most processing equipment, and has various application fields. In addition, it is widely used in various fields because it can provide molded articles excellent in physical and chemical properties, such as mechanical strength, weather resistance, and chemical resistance.
  • the vinyl chloride-based polymer is blended with the auxiliary materials and applied to various fields.
  • the bonding strength with the auxiliary material is poor, and as a result, the compounding property may be deteriorated and the processability may not be good.
  • the vinyl chloride-based polymer is manufactured and used through bulk polymerization, suspension polymerization, or emulsion polymerization as desired.
  • the production through bulk polymerization is not necessary because a polymerization process is performed without using a medium such as water and using a vinyl chloride monomer, an initiator, and other reaction additives, unlike suspension polymerization or emulsion polymerization, so a drying process is not necessary and thus the production cost It is relatively inexpensive and widely used in industry.
  • the present invention was devised to solve the problems of the prior art, and an object of the present invention is to provide a vinyl chloride-based polymer having excellent processability with a controlled surface non-uniformity of particles.
  • an object of the present invention is to provide a method for producing the vinyl chloride-based polymer.
  • the present invention provides a vinyl chloride-based polymer having a particle non-uniformity of 10 or more defined by the following equation (1).
  • Equation 1 X i is the standard deviation of the i-th particle, and is a value defined by Equation 2 below,
  • a n is a correction value of the n-th measurement diameter of the i-th particle, where the correction value is a value defined by Equation 3 below,
  • D n is the n-th measurement diameter of the i-th particle
  • D 0 is the longest diameter in the i-th particle
  • n is an integer from 1 to 50.
  • the present invention is a step of forming a particle nucleus by adding a pre-polymerization initiator to the first vinyl chloride-based monomer and pre-polymerizing at a pressure of 8.0 K / G to 8.7 K / G; And post-polymerizing the second vinyl chloride-based monomer and post-polymerization initiator in the presence of the particle nucleus (step 2), wherein the pre-polymerization initiator is 1.3 K / G to 3.5 K / G compared to the pressure during pre-polymerization. It is to be added at a low pressure, and provides a method for producing the vinyl chloride-based polymer as described above in Equation 1 above.
  • the vinyl chloride-based polymer according to the present invention is prepared through the above-described manufacturing method in which the pressure condition during pre-polymerization and the input point of the pre-polymerization initiator are adjusted, so that the particle non-uniformity can be controlled, and can have a high porosity, and thus the compound properties This can be improved and the processability can be excellent.
  • the method for producing a vinyl chloride-based polymer according to the present invention controls the pressure during pre-polymerization in the pre-polymerization step of forming particle nuclei, and lowers the pressure of 1.3 K / G to 3.5 K / G compared to the pressure during pre-polymerization.
  • the surface of the particle nuclei of the initial reaction can be controlled by adding it to participate in the pre-polymerization, whereby a vinyl chloride-based polymer with controlled particle non-uniformity and porosity can be prepared.
  • the method for producing the vinyl chloride-based polymer according to the present invention and the vinyl chloride-based polymer prepared therefrom can be easily applied to industries requiring it, such as vinyl chloride-based resins and molded article related industries.
  • 1 is an SEM image of particles of a vinyl chloride polymer prepared through conventional bulk polymerization.
  • Figure 2 is a SEM image of the particles of the vinyl chloride polymer prepared through conventional suspension polymerization.
  • first vinyl chloride-based monomer' and 'second vinyl chloride-based monomer' used in the present invention are for distinguishing the order of participation in the reaction, and the material itself may mean the same vinyl chloride-based monomer.
  • the term 'particle non-uniformity' used in the present invention refers to the surface non-uniformity of the particles, or the roughness of the particle surface, to obtain a standard deviation between the diameters of 50 particles in the polymer in multiple directions, and the standard deviation of the diameter of each particle It is defined as the average value of, and the smaller the value, the smaller the standard deviation between the diameters of each particle, that is, the diameters in the multiple directions of the particles have similar values, indicating that the particles are close to spherical, and thus the particle surface has a low roughness. Or it could mean smooth.
  • K / G (kgf / cm 2 ) used in the present invention is a unit representing pressure, and 1 K / G may be equal to 0.968 atm.
  • the present invention provides a vinyl chloride-based polymer having excellent processability by improving the blendability by controlling the particle non-uniformity.
  • the vinyl chloride-based polymer according to an embodiment of the present invention can be adjusted by the manufacturing method described below, so that the surface roughness of the particles constituting the polymer can be controlled, and thus the compounding properties can be improved to improve processability.
  • the vinyl chloride-based polymer is characterized in that the particle non-uniformity defined by Equation 1 below is 10 or more. More specifically, the vinyl chloride-based polymer may have a particle non-uniformity of 11 or more and 16 or less.
  • Equation 1 X i is the standard deviation of the i-th particle, and is a value defined by Equation 2 below,
  • a n is a correction value of the n-th measurement diameter of the i-th particle, where the correction value is a value defined by Equation 3 below,
  • D n is the n-th measurement diameter of the i-th particle
  • D 0 is the longest diameter in the i-th particle
  • n is an integer from 1 to 50.
  • the vinyl chloride-based polymer according to an embodiment of the present invention may have a gelation rate of 50 seconds or more and 80 seconds or less.
  • the vinyl chloride-based polymer according to the present invention can exhibit the gelation rate in the above-described range by having the above-described particle surface non-uniformity, and thus excellent processability.
  • the gelation rate was 50 g of a dry mixture prepared by mixing 2 parts by weight of a heat stabilizer and 2 parts by weight of an epoxidized soybean oil in 100 parts by weight of a vinyl chloride-based polymer, and melted at 30 rpm at 165 ° C at 30 rpm. It was measured by recording the mechanical load that appeared.
  • the vinyl chloride polymer according to the present invention may have a porosity of 59% or more, specifically 59 to 65% or 60% to 63%, and deterioration of mechanical properties within this range Without increasing the plasticizer absorption rate may be excellent workability.
  • the porosity was calculated from the amount of mercury penetrating into each vinyl chloride polymer particle using a mercury porosity analyzer (AutoPore IV 9520, Micromeritics).
  • the vinyl chloride-based polymer according to an embodiment of the present invention may be a bulk polymer.
  • the present invention provides a method for producing a vinyl chloride-based polymer having a controlled particle surface non-uniformity.
  • vinyl chloride-based polymers are manufactured through a method of bulk polymerization, suspension polymerization or emulsion polymerization, and, unlike suspension polymerization or emulsion polymerization, only a monomer, a polymerization initiator, and additives as necessary are added without using a medium. It is widely used in that it can be polymerized and does not require a post-polymerization process such as a drying process, so that production cost is low and mass production is easy.
  • the polymer particle surface has a smooth and angular shape, and thus, when compared with a polymer prepared by suspension polymerization or emulsion polymerization, the bonding strength with the auxiliary raw material is poor, resulting in poor processability.
  • the present invention provides a method for producing a vinyl chloride-based polymer having a vinyl chloride-based polymer prepared through bulk polymerization, but controlling the particle surface morphology by adjusting the input time of the polymerization initiator.
  • the method for preparing the vinyl chloride-based polymer comprises adding a pre-polymerization initiator to the first vinyl chloride-based monomer and pre-polymerizing it at a pressure of 8.0 K / G to 8.7 K / G to form particle nuclei. (Step 1); And post-polymerizing the second vinyl chloride-based monomer and post-polymerization initiator in the presence of the particle nucleus (step 2), wherein the pre-polymerization initiator is 1.3 K / G to 3.5 K / G lower than the pressure during pre-polymerization. It is characterized by adding at pressure.
  • the step A is a pre-polymerization step for forming a particle nucleus, and may be performed by adding a pre-polymerization initiator to the first vinyl chloride monomer and pre-polymerizing the pre-polymerization of 8.0 K / G to 8.7 K / G. It may be performed at a pressure, and the pre-polymerization initiator may be added at a pressure of 1.3 K / G to 3.5 K / G lower than the pressure during the pre-polymerization, specifically, the pre-polymerization initiator is the pressure during the pre-polymerization. Contrast may be to be added at a pressure of 1.5 K / G to 3.0 K / G lower.
  • reaction rate control is required at the beginning of the reaction in order to control the surface shape of the final polymer particles.
  • Polymerization is carried out at a pressure adjusted to the above-mentioned specific range, and when the pre-polymerization initiator reaches a pressure of 1.3 K / G to 3.5 K / G lower than the pressure during pre-polymerization, it is introduced into the first vinyl chloride-based monomer to thereby The non-uniformity and porosity can be adjusted to an appropriate level as described above.
  • step A the first vinyl chloride-based monomer is introduced into the reactor, and the pressure in the reactor is increased to a pressure determined from 8.0 K / G to 8.7 K / G to perform pre-polymerization. It may be that the pre-polymerization initiator is added when a pressure of 1.3 K / G to 3.5 K / G lower than the pre-polymerization performing pressure during the pressure rise, specifically, 1.5 K / G to 3.0 K / G, is reached.
  • the pre-polymerization initiator may be added in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the first vinyl chloride-based monomer, and specifically, added in an amount of 0.03 to 0.1 parts by weight. If the prepolymerization initiator is added in the above range, the prepolymerization reaction can be smoothly initiated and the reaction time can be appropriately adjusted. In addition, since the reactant heat can be maintained at an appropriate value, stability deterioration due to the reaction heat can be prevented, and problems such as deterioration of thermal stability by the residual initiator can be minimized.
  • the pre-polymerization initiator is not particularly limited, for example, a peroxy ester or a compound of peroxydicarbonate or the like can be used, and specifically, di-2-ethylhexyl peroxysicarbonate, t-butylperoxyneode Canoate, t-butylperoxy ester, cumylperoxy ester, cumylperoxy neodecanoate, 1,1,3,3-tetramethyl butyl peroxy neodecanoate, t-hexyl peroxy neodecanoate , t-hexyl peroxy pivalate, t-butyl peroxy pivalate, di-sec-butyl peroxy dicarbonate, di-2-ethoxyethyl peroxy dicarbonate, isobutyryl peroxide, 3,5,5 -Trimethylhexanoyl peroxide, lauryl peroxide, and octyl peroxy dicarbonate
  • the first vinyl chloride monomer may be a vinyl chloride monomer or a mixture of a vinyl chloride monomer and a vinyl monomer having copolymerization with the vinyl chloride monomer, wherein the first vinyl chloride monomer is a vinyl chloride monomer and In the case of a mixture of vinyl-based monomers, it may be used by appropriately adjusting so that vinyl chloride in the vinyl chloride-based polymer prepared therefrom is contained in 50% by weight or more.
  • the vinyl-based monomer is not particularly limited, for example, olefin compounds such as ethylene, propylene, and butene; Vinyl esters such as vinyl acetate, vinyl propionate, and vinyl stearate; Unsaturated nitriles such as acrylonitrile; Vinyl alkyl ethers such as vinyl methyl ether, vinyl ethyl ether, vinyl octyl ether, and vinyl lauryl ether; Vinylidene halides such as vinylidene chloride; Unsaturated fatty acids such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleic anhydride, and itaconic anhydride and anhydrides of these fatty acids; Unsaturated fatty acid esters such as methyl acrylate, ethyl acrylate, monomethyl maleate, dimethyl maleate, and butylbenzyl maleate; Cross-linkable monomers such as diallyl phthalate, and the vinyl monomers
  • the pre-polymerization of step A may be carried out to 10% to 15% of the polymerization conversion rate.
  • the polymerization conversion rate of the pre-polymerization of the step A is not particularly limited, but the pre-polymerization is a step for preparing the particle nuclei, and if the pre-polymerization is excessively carried out and the particle nuclei are excessively formed, the physical properties of the polymer finally produced are It can be denatured differently than the purpose, so there is a need to control the degree of polymerization of the prepolymerization.
  • a vinyl chloride-based polymer having a desired degree of heterogeneity can be produced without excessively forming particle nuclei, but the polymerization degree and other physical properties may not be affected.
  • the polymerization conversion rate indicates the conversion rate of the first vinyl chloride monomer to the polymer, and may be measured using a butane tracer equipped with gas chromatography. Specifically, under certain polymerization conditions, a polymerization conversion rate curve according to a ratio of a vinyl chloride-based monomer over time with butane may be prepared for each polymerization condition, and based on this, a polymerization conversion rate according to polymerization conditions may be measured. Further, the polymerization conversion rate may include up to an error range according to measurement.
  • the pre-polymerization may be performed in a temperature range condition of 30 °C to 70 °C.
  • the step B is a step for producing a vinyl chloride-based polymer by growing the interior of the particle nucleus prepared by the pre-polymerization, a second vinyl chloride-based monomer and a post polymerization initiator in the presence of the particle nuclei prepared in the pre-polymerization step Can be post-polymerized.
  • the post-polymerization may be performed at a pressure of 6 K / G to 13 K / G.
  • the second vinyl chloride-based monomer may be the same as the first vinyl chloride-based monomer.
  • the post-polymerization initiator may be used in 0.05 parts by weight to 2 parts by weight based on 100 parts by weight of the second vinyl chloride monomer, specifically, 0.1 parts by weight to 0.5 parts by weight.
  • the post-polymerization initiator is not particularly limited, such as di-2-ethylhexyl peroxycarbonate, t-butyl peroxy neodecanoate, t-butyl peroxy ester, cumyl peroxy ester, cumyl peroxy neo Decanoate, 1,1,3,3-tetramethyl butyl peroxy neodecanoate, t-hexyl peroxy neodecanoate, t-hexyl peroxy pivalate, t-butyl peroxy pivalate, di- sec-butyl peroxy dicarbonate, di-2-ethoxyethyl peroxy dicarbonate, isobutyryl peroxide, 3,5,5-trimethylhexanoyl peroxide, lauryl peroxide and octyl peroxy dicarbonate It may be one or more. Meanwhile, the post-polymerization initiator may be the same or different material from the pre-polymer
  • the post-polymerization may be performed in a temperature range of 30 °C to 70 °C.
  • the manufacturing method according to an embodiment of the present invention can remove the reactivity of the remaining post polymerization initiator by adding a polymerization inhibitor at the end of post polymerization, wherein the polymerization inhibitor is not particularly limited, for example, hydro Quinone, butylated hydroxy toluene, monomethyl ether hydroquinone, quaternary butyl catechol, diphenylamine, triisopropanol amine, triethanol amine, and the like can be used.
  • the polymerization inhibitor is not particularly limited, for example, hydro Quinone, butylated hydroxy toluene, monomethyl ether hydroquinone, quaternary butyl catechol, diphenylamine, triisopropanol amine, triethanol amine, and the like can be used.
  • the amount of the polymerization inhibitor may be appropriately adjusted depending on the amount of the post-polymerization initiator remaining, but is usually 0.001 part by weight to 0, based on 100 parts by weight of the total amount of vinyl chloride-based monomers used for pre-polymerization and post-polymerization. Can be used as 1 part by weight.
  • the manufacturing method may use a reaction medium as necessary, and further additives such as molecular weight modifiers may be used.
  • the reaction medium is not particularly limited, and a conventional organic solvent can be used.
  • aromatic compounds such as benzene, toluene, and xylene and methyl ethyl ketone, acetone, n-hexane, chloroform, cyclohexane, and the like can be used.
  • the molecular weight modifier is not particularly limited, for example, n-butyl mercaptan, n-octyl mercaptan, n-dodecyl mercaptan, t-dodecyl mercaptan, and the like can be used.
  • a vinyl chloride monomer was added to a 0.5 m 3 post-polymerization reactor, and the prepared particle nuclei were transferred, and then 1,1,3,3-tetramethyl butyl peroxy when the reactor internal pressure was 4 K / G.
  • 95 g of neodicarbonate (OND) was added, and the mixture was stirred and stirred, and polymerized at a pressure of 8 K / G for 180 minutes. After the polymerization was completed, unreacted vinyl chloride monomer remaining in vacuum for 30 minutes while stirring was collected to prepare a vinyl chloride polymer.
  • Example 1 a vinyl chloride polymer was prepared in the same manner as in Example 1, except that di-2-ethyl hexyl peroxydicarbonate was added at a time when 5 K / G was reached.
  • Example 1 the prepolymerization was carried out at 8.7 K / G, and di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 6.7 K / G, and the same method as in Example 1 was used. A vinyl chloride polymer was prepared.
  • Example 1 the same method as in Example 1 except that 95 g of 1,1,3,3-tetramethyl butyl peroxy neodicarbonate (OND) was added together with the vinyl chloride monomer during post-polymerization. Through this, a vinyl chloride polymer was prepared.
  • OND 1,1,3,3-tetramethyl butyl peroxy neodicarbonate
  • Example 1 a vinyl chloride polymer was prepared in the same manner as in Example 1, except that pre-polymerization was performed at 12 K / G.
  • Example 1 a vinyl chloride polymer was prepared in the same manner as in Example 1, except that di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 7 K / G, but normal particle nuclei were obtained. The polymer was not produced because it was not produced. This is a result which means that di-2-ethylhexyl peroxydicarbonate is late and the dispersion is insufficient.
  • Example 1 a vinyl chloride polymer was prepared in the same manner as in Example 1, except that di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 4 K / G.
  • Example 1 except that the prepolymerization was carried out at 10 K / G and di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 8.5 K / G, the same method as in Example 1 was used. A vinyl chloride polymer was prepared.
  • Example 1 except that the prepolymerization was carried out at 7 K / G and di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 5.5 K / G, the same method as in Example 1 was carried out. A vinyl chloride polymer was prepared, but the polymer was not produced because normal particle nuclei were not produced. This is a result which means that the polymerization was not normally performed because the pressure was too low during pre-polymerization.
  • Example 1 the prepolymerization was carried out at 10 K / G, and di-2-ethyl hexyl peroxydicarbonate was added at the time of reaching 6.5 K / G.
  • a vinyl chloride polymer was prepared.
  • Example 1 the prepolymerization was carried out at 9.5 K / G, and di-2-ethyl hexyl peroxydicarbonate was added at the time when 8 K / G was reached, and the same method as in Example 1 was used. A vinyl chloride polymer was prepared.
  • Example 1 a vinyl chloride polymer was prepared in the same manner as in Example 1, except that pre-polymerization was performed at 9.5 K / G.
  • Comparative Example 1 a vinyl chloride polymer was prepared through the same method as Comparative Example 1, except that post polymerization was performed at 7 K / G.
  • the particle non-uniformity is measured by measuring the longest diameter of each particle for a total of 50 particles observed using an optical microscope for each polymer surface, and measuring the 50 diameters passing through the center thereof. It was calculated through Equation 3. That is, the standard deviation of the diameter of each particle is calculated through Equations 2 and 3 using the longest diameter for each 50 particles and 50 diameters passing through the center thereof, and the average for the calculated 50 diameter standard deviation is calculated. It is represented by non-uniformity.
  • Equation 1 Xi is a standard deviation of the i-th particle, and is a value defined by Equation 2 below,
  • Equation 2 An is a correction value of the n-th measurement diameter of the i-th particle, where the correction value is a value defined by Equation 3 below,
  • D n is the n-th measurement diameter of the i-th particle
  • D 0 is the longest diameter in the i-th particle
  • n is an integer from 1 to 50.
  • the polymerization degree was measured according to ASTM D1 243-49.
  • the porosity was calculated from the amount of mercury that penetrated into each vinyl chloride polymer particle using a mercury porosity analyzer (AutoPore IV 9520, Micromeritics).
  • Comparative Examples 9 and 10 in order to confirm the change in particle non-uniformity according to the conditions during post-polymerization, pre-polymerization proceeds in the same manner as in Comparative Example 1, and the post-polymerization initiator input time and post-polymerization pressure are changed during post-polymerization.
  • the post-polymerization initiator was added at a time of -2.5 K / G than that of post-polymerization, but the particle non-uniformity was not controlled, and in Comparative Example 10, the particle non-uniformity was not controlled and the polymerization degree was large. Rose.
  • the surface non-uniformity of the finally produced polymer particles can be controlled by adjusting the pre-polymerization pressure during pre-polymerization and adjusting the input time of the pre-polymerization initiator, and adjusting the pressure during post-polymerization and the control of the post-polymerization initiator input time. Through the above, it was confirmed that it may act as an obstacle to the production of the desired polymer.
  • Comparative Example 2 and Comparative Example 5 a polymer was not prepared, and thus the physical properties were not measured.
  • each vinyl chloride polymer of Examples and Comparative Examples was mixed with DOP (dioctyl phthalate), and calculated by the following Equation 4 to measure plasticizer absorption.
  • Plasticizer absorption rate (% by weight) [(B-A) / A] X100
  • Equation 4 A is the weight of the vinyl chloride polymer, and B is the weight of the vinyl chloride polymer absorbed by the plasticizer after mixing with the plasticizer.
  • the vinyl chloride polymers of Examples 1 to 4 according to an embodiment of the present invention have excellent blendability more than twice as compared to the vinyl chloride polymer of the comparative example, while the gelation rate is reduced by more than half, and the plasticizer Absorption rate was significantly increased and protrusions were significantly reduced.
  • the gelation rate is reduced and the plasticizer absorption rate is controlled by controlling the particle non-uniformity and porosity. It can be increased, and thus it was confirmed that the compoundability is excellent, and thus it is possible to show greatly improved processability.

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

La présente invention concerne un procédé de production d'un polymère à base de chlorure de vinyle ayant une aptitude au traitement améliorée en présentant d'excellentes propriétés de mélange, et un polymère à base de chlorure de vinyle produit par celui-ci, permettant d'obtenir un polymère à base de chlorure de vinyle ayant une non-uniformité particulaire, définie par l'équation mathématique 1, d'au moins 10, ainsi que son procédé de production.
PCT/KR2019/009907 2018-09-21 2019-08-07 Polymère à base de chlorure de vinyle et son procédé de production WO2020060028A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2020536046A JP7024093B2 (ja) 2018-09-21 2019-08-07 塩化ビニル系重合体及びこの製造方法
EP19863203.6A EP3715387B1 (fr) 2018-09-21 2019-08-07 Polymère à base de chlorure de vinyle et son procédé de préparation
CN201980007218.0A CN111542552B (zh) 2018-09-21 2019-08-07 氯乙烯类聚合物及其制备方法
US16/959,779 US11186658B2 (en) 2018-09-21 2019-08-07 Vinyl chloride-based polymer and preparation method thereof

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KR10-2018-0113823 2018-09-21
KR20180113823 2018-09-21
KR10-2019-0094160 2019-08-02
KR1020190094160A KR102178879B1 (ko) 2018-09-21 2019-08-02 염화비닐계 중합체 및 이의 제조방법

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