WO2015152260A1 - 塩素化塩化ビニル系樹脂の製造方法 - Google Patents
塩素化塩化ビニル系樹脂の製造方法 Download PDFInfo
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- WO2015152260A1 WO2015152260A1 PCT/JP2015/060173 JP2015060173W WO2015152260A1 WO 2015152260 A1 WO2015152260 A1 WO 2015152260A1 JP 2015060173 W JP2015060173 W JP 2015060173W WO 2015152260 A1 WO2015152260 A1 WO 2015152260A1
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- vinyl chloride
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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
- C08F8/00—Chemical modification by after-treatment
- C08F8/18—Introducing halogen atoms or halogen-containing groups
- C08F8/20—Halogenation
- C08F8/22—Halogenation by reaction with free halogens
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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
- C08F214/00—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
- C08F214/02—Monomers containing chlorine
- C08F214/04—Monomers containing two carbon atoms
- C08F214/06—Vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
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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
- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
- C08L27/22—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 a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L27/24—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 a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated
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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
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
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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
- 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
- C08L51/04—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 rubbers
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use 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 a halogen; Derivatives of such polymers
- C08J2327/22—Characterised by the use 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 a halogen; Derivatives of such polymers modified by chemical after-treatment
- C08J2327/24—Characterised by the use 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 a halogen; Derivatives of such polymers modified by chemical after-treatment halogenated
Definitions
- the present invention relates to a method for producing a chlorinated vinyl chloride resin having high initial colorability and heat stability, excellent thermal stability, and capable of obtaining a transparent molded product.
- Chlorinated vinyl chloride resin is manufactured by post-chlorination of vinyl chloride resin, and has excellent weather resistance, flame resistance, chemical resistance, etc., which are the advantages of vinyl chloride resin. Since the heat distortion temperature is 20 to 40 ° C. higher than that of vinyl chloride resin, it is suitably used for applications requiring heat resistance of 100 ° C., such as heat-resistant pipes, heat-resistant joints, heat-resistant valves, and heat-resistant plates.
- chlorinated vinyl chloride resin has a high thermal deformation temperature, it must be heated and melted at a high temperature to be molded into heat-resistant pipes, heat-resistant joints, heat-resistant valves, heat-resistant plates, etc. If the properties and stability of heat resistance are poor, a transparent molded product cannot be obtained.
- Patent Document 1 discloses that polyvinyl chloride is suspended in an aqueous medium in a sealable container, depressurized, then introduced into the container, and the polyvinyl chloride is chlorinated at a temperature of 90 to 140 ° C.
- the chlorination method when the chlorine content of the polyvinyl chloride in the reaction reaches 60% by weight or more during the chlorination process, the hydrogen peroxide is dissolved at a rate of 5 to 50 ppm / hr with respect to the polyvinyl chloride.
- a method of starting the addition has been proposed.
- Example 1 of Patent Document 1 a predetermined amount of deionized water and PVC are added and stirred to disperse PVC in water, followed by heating and decompression, introducing chlorine, and simultaneously starting the reaction.
- the temperature was not controlled while the temperature was raised to the reaction temperature after introducing chlorination into the reactor and the temperature was simply raised to the reaction temperature as soon as possible. Therefore, the obtained chlorinated vinyl chloride resin has a drawback that the heat stability (initial colorability, heat resistance stability) and the like are poor and a transparent molded product cannot be obtained.
- An object of the present invention is to provide a method for producing a chlorinated vinyl chloride resin having high initial colorability and heat stability, excellent thermal stability and capable of obtaining a transparent molded product.
- the present invention is a method for producing a chlorinated vinyl chloride resin in which a reaction solution comprising a vinyl chloride aqueous suspension containing a vinyl chloride resin is thermally chlorinated in a sealable reaction vessel, the reaction solution Step 1 in which chlorine is introduced into the reaction vessel at a temperature of 55 to 70 ° C. to start thermal chlorination, and the temperature in the reaction vessel is set to a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin.
- the chlorinated vinyl chloride resin is produced by setting the net stirring power (Pv) in the reaction vessel to 0.2 to 2.5 kw / m 3 per 1 m 3 of the reaction solution.
- the present inventor makes initial colorability and heat stability stable by setting the temperature during thermal chlorination within a predetermined range and the net stirring power within a predetermined range.
- the present inventors have found that a chlorinated vinyl chloride resin that is high in temperature, excellent in thermal stability, and capable of obtaining a transparent molded product can be obtained, thereby completing the present invention.
- the present invention is a method for producing a chlorinated vinyl chloride resin in which a reaction liquid comprising a vinyl chloride aqueous suspension containing a vinyl chloride resin is thermally chlorinated in a sealable reaction vessel.
- the reaction vessel that can be sealed is preferably a pressure vessel with glass lining, and a reaction vessel provided with a stirring device and a heating / cooling jacket.
- the vinyl chloride resin includes not only a vinyl chloride homopolymer but also a copolymer of a vinyl chloride monomer and another monomer copolymerizable with the vinyl chloride monomer. Moreover, it is preferable that the vinyl chloride copolymer of the said vinyl chloride monomer and the other monomer copolymerizable with the said vinyl chloride monomer contains 50 weight% or more of vinyl chloride monomers.
- Examples of other monomers copolymerizable with vinyl chloride include vinyl esters such as vinyl acetate and vinyl propionate; (meth) acrylic esters such as methyl (meth) acrylate and ethyl (meth) acrylate. Olefins such as ethylene and propylene, maleic anhydride, acrylonitrile, styrene, and vinylidene chloride.
- the average degree of polymerization of the vinyl chloride resin is generally 600 to 2000.
- the vinyl chloride aqueous suspension is a suspension containing a vinyl chloride resin and water.
- the vinyl chloride resin powder may be added to the aqueous medium and dispersed and suspended.
- the vinyl chloride resin can be used as it is because it is in a water suspension state.
- the average particle diameter of the vinyl chloride resin powder becomes small, handling becomes difficult, and when it becomes large, chlorination takes a long time. Therefore, it is preferably 100 to 200 ⁇ m.
- Step 1 is performed in which the reaction liquid is heated and chlorine is introduced into the reaction vessel at a temperature of 55 to 70 ° C. to start thermal chlorination.
- thermal chlorination is a reaction in which heat chlorination is performed by heating without irradiating with ultraviolet rays.
- the inside of the reaction vessel is decompressed to remove oxygen and heated, and when the temperature of the reaction liquid reaches 55 to 70 ° C., chlorine is removed from the reaction vessel. It is preferable to start thermal chlorination by introducing into the inside.
- the suction is performed until the atmospheric pressure in the reaction vessel reaches a pressure obtained by adding a pressure of 20 mm of mercury to the vapor pressure of water at that time, and the initial degassing is performed by maintaining the pressure for several minutes. Thereafter, nitrogen is injected into the reaction vessel and left to stand for a while, and then the operation of removing the oxygen by performing suction deaeration again with a vacuum pump is repeated to reduce the amount of oxygen in the reaction vessel to 100 ppm or less.
- the above heating is preferably performed by supplying steam or hot water to the jacket, and the chlorine is reacted when the temperature of the aqueous suspension reaches a temperature at which thermal chlorination starts, that is, 55 to 70 ° C. Introduce into the container and start thermal chlorination.
- the chlorine used in the thermal chlorination preferably has a high purity, but it may be used as it is, which is a commercially available chlorine containing 1000 ppm or more oxygen.
- step 1 the temperature of the reaction solution is 55 to 70 ° C., chlorine is introduced into the reaction vessel, and thermal chlorination is started. If the temperature of the reaction solution is less than 55 ° C., thermal chlorination hardly progresses and becomes inefficient. When the said temperature exceeds 70 degreeC, the thermal stability of the obtained chlorinated vinyl chloride-type resin will fall, and the transparency of a molded object will fall. Preferably it is 57-67 ° C.
- step 2 is then performed in which the temperature in the reaction vessel is raised while maintaining the temperature below the glass transition temperature of the partially chlorinated vinyl chloride resin.
- the thermal chlorination step is performed while maintaining a predetermined temperature.
- the “partially chlorinated vinyl chloride resin” refers to a chlorinated vinyl chloride resin during the chlorination step.
- the “glass transition temperature of partially chlorinated vinyl chloride resin” refers to the glass transition temperature estimated from the chlorine content.
- step 2 as a method of raising the temperature while maintaining the temperature below the glass transition temperature of the partially chlorinated vinyl chloride resin, for example, measuring the chlorine content of the partially chlorinated vinyl chloride resin in the reaction vessel Then, a method of obtaining the glass transition temperature and raising the temperature to a temperature equal to or lower than the glass transition temperature can be mentioned.
- the temperature is raised while maintaining the temperature below the glass transition temperature of the partially chlorinated vinyl chloride resin.
- the glass transition temperature of the partially chlorinated vinyl chloride resin is preferably ⁇ 2 ° C. or less.
- the time required for the above step 2 (also referred to as a temperature raising time) is preferably a time corresponding to 5 to 40% with respect to the entire chlorination reaction time.
- Step 3 of performing thermal chlorination at a predetermined temperature of 85 ° C. or higher and lower than 115 ° C. is performed.
- a predetermined temperature not lower than 85 ° C. and lower than 115 ° C.” is also referred to as “thermal chlorination temperature”.
- thermal chlorination may be performed at a predetermined temperature of 85 ° C. or more and less than 115 ° C.
- the thermal chlorination after the content becomes 58% by weight or more is preferably thermal chlorination at a temperature not higher than the glass transition temperature of the partially chlorinated vinyl chloride resin.
- step 3 after the chlorine content of the partially chlorinated vinyl chloride resin becomes 58% by weight or more, thermal chlorination is performed at the predetermined temperature.
- the chlorine content is less than 58% by weight, when the thermal chlorination is performed at the predetermined temperature, the reaction proceeds at a stretch and the uniform chlorination reaction cannot be performed.
- the chlorine content is preferably 72% by weight or less.
- the chlorine content of the partially chlorinated vinyl chloride resin is not particularly limited as long as it is 58% by weight or more, but the chlorine content of the partially chlorinated vinyl chloride resin is 58% by weight or more and 60% by weight. It is preferable to perform thermal chlorination at a predetermined temperature of 85 ° C. or more and less than 95 ° C. after reaching less than% (step 3-1). Moreover, in the said process 3, after the chlorine content rate of the said partially chlorinated vinyl chloride resin becomes 60 weight% or more and less than 62 weight%, it can carry out thermal chlorination at the predetermined temperature of 95 degreeC or more and less than 105 degreeC. Preferred (step 3-2).
- step 3 it is preferable to perform the thermal chlorination at a predetermined temperature of 105 ° C. or higher and lower than 115 ° C. after the chlorine content of the partially chlorinated vinyl chloride resin reaches 62% by weight or more (step 3- 3).
- the thermal chlorination temperature according to the chlorine content in this way, the heating time becomes longer, but the thermal chlorination speed becomes faster because the thermal chlorination temperature becomes higher, and the overall thermal chlorination time becomes Shortened. Further, even when the thermal chlorination temperature is increased, the thermal stability (initial colored product and heat-resistant stability) of the obtained chlorinated vinyl chloride resin does not decrease. Note that any one of the steps 3-1, 3-2, and 3-3 may be performed, or two or more may be performed in duplicate.
- the net stirring power (Pv) in the reaction vessel is set to 0.2 to 2.5 kw / m 3 per 1 m 3 of the reaction solution. If the net stirring power is less than 0.2 kw / m 3 , sufficient stirring cannot be obtained, and the temperature is distributed in the vicinity of the jacket and in the center, resulting in a non-uniform chlorination reaction. When the net stirring power exceeds 2.5 kw / m 3 , stirring is too strong and bubbles are entrained in the solution, and a uniform chlorination reaction cannot be performed.
- the net stirring power Pv is preferably 0.3 to 2.0 kw / m 3 per 1 m 3 of the reaction solution.
- Np is the power number
- ⁇ is the density of the contents of the reaction vessel (kg / m 3 )
- n is the number of revolutions of the stirring blade (1 / second)
- d is the blade length (m)
- v is the inside of the reaction vessel.
- the liquid amount (m 3 ) and gc are gravity conversion coefficients, respectively.
- Pv increases with increasing viscosity of the system after the start of polymerization, and thereafter becomes constant, but the increase is slight.
- the stirring rotation speed may be constant during the reaction period or may be changed in the middle of the reaction, but in steps 1 to 3, the net stirring power must be within the range of 0.2 to 2.5 kw / m 3. .
- examples of the stirring blade for performing stirring include a twisted lattice blade, a double helical blade, a ribbon blade, a paddle blade, and the like, and a twisted lattice blade (for example, manufactured by Hitachi, Ltd.) and a double helical blade are used.
- the twisted lattice blades do not have a shaft (main shaft) that does not directly affect the stirring, so there is no stagnation near the shaft, and the higher the viscosity of the polymerization solution, the shorter the stagnation time, achieving efficient stirring. can do.
- hydrogen peroxide may be added to improve the rate of thermal chlorination and shorten the reaction time.
- the hydrogen peroxide is preferably added after the chlorine content of the partially chlorinated vinyl chloride resin in the reaction vessel reaches 58% by weight or more.
- the addition rate of the hydrogen peroxide is preferably 3 to 40 ppm / Hr with respect to the vinyl chloride resin. When the addition rate is less than 3 ppm / Hr, the effect of promoting the reaction rate may not be exhibited, and when it exceeds 40 ppm / Hr, the thermal stability of the obtained chlorinated vinyl chloride resin may be impaired. .
- the addition of the hydrogen peroxide may be continuous or intermittent.
- the total amount of hydrogen peroxide added is preferably 10 to 300 ppm, more preferably 20 to 200 ppm relative to the vinyl chloride resin. If the total amount of hydrogen peroxide added is less than 10 ppm, the reaction rate promoting effect may not be exhibited. If it exceeds 300 ppm, thermal stability may be impaired.
- the time taken for the above steps 1 to 3 (also referred to as total thermal chlorination time) is preferably 6 to 12 hours. By setting the temperature rising time within the above range, it is uniformly chlorinated and the resin can be produced efficiently.
- a chlorinated vinyl chloride resin can be obtained using the method for producing a chlorinated vinyl chloride resin of the present invention. Moreover, a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding can be produced using such a chlorinated vinyl chloride resin. Such a chlorinated vinyl chloride resin molded body is also one aspect of the present invention.
- the chlorinated vinyl chloride resin molding of the present invention preferably contains 80 to 95% by weight of chlorinated vinyl chloride resin. Thereby, it can be set as the molded object excellent in heat-resistant stability.
- the chlorinated vinyl chloride resin molded body of the present invention preferably has a transparency of 1 to 10 when it is formed into a plate shape having a thickness of 5 mm. Thereby, it can use suitably for the industrial board, pipe, etc. in which transparency is required. In addition, the said transparency can be measured using a haze meter, for example.
- Example 1 Into a glass-lined reaction vessel with an internal volume of 300 liters, 200 kg of deionized water and 56 kg of vinyl chloride resin having an average polymerization degree of 600 are added and stirred to disperse the vinyl chloride resin in water to form a water suspension. The inside of the container was heated to raise the temperature of the aqueous suspension to 70 ° C. Next, after reducing the pressure in the reaction vessel to remove oxygen (oxygen amount 100 ppm), chlorine (oxygen content 50 ppm) was introduced so that the chlorine partial pressure was 0.4 MPa, and thermal chlorination was started (chlorine). Start temperature 70 ° C).
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the aqueous suspension is kept at 90 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the thermal chlorination temperature After continuing the thermal chlorination for a period of time (the temperature at this time is called the thermal chlorination temperature), the supply of chlorine gas was stopped and the thermal chlorination was terminated.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 0.6 kw / m 3 .
- the thermal chlorination step after the chlorine content reaches 61% by weight, 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin reached 58.2% by weight was 91.1 ° C. That is, from the start of thermal chlorination until the temperature is raised to 90 ° C., the temperature of the aqueous suspension in the reaction vessel is kept at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- chlorinated vinyl chloride resin had a chlorine content of 64.9% by weight.
- chlorinated vinyl chloride resin To the resulting chlorinated vinyl chloride resin, butyltin malate stabilizer, butyl stearate, MBS (methyl methacrylate-butadiene-styrene) resin, acrylic processing aid (polymethyl methacrylate) is added, and chlorinated vinyl chloride Resin content 92.5 wt%, butyltin malate stabilizer content 1.9 wt%, butyl stearate content 0.5 wt%, MBS resin content 4.6 wt%, acrylic A chlorinated vinyl chloride resin composition was prepared so that the processing aid content was 0.5% by weight.
- MBS methyl methacrylate-butadiene-styrene
- the obtained chlorinated vinyl chloride resin composition was wound with a roll at 190 ° C., kneaded for 1 minute, then preheated with a 185 ° C. press for 3 minutes, and pressed for 4 minutes to give a 2 mm thick plate A chlorinated vinyl chloride resin molded product was obtained.
- Example 2 Into a glass-lined reaction vessel with an internal volume of 300 liters, 200 kg of deionized water and 56 kg of vinyl chloride resin having an average polymerization degree of 600 are added and stirred to disperse the vinyl chloride resin in water to form a water suspension. The inside of the container was heated to raise the temperature of the aqueous suspension to 70 ° C. Next, after reducing the pressure in the reaction vessel to remove oxygen (oxygen amount 100 ppm), chlorine (oxygen content 50 ppm) was introduced so that the chlorine partial pressure was 0.4 MPa, and thermal chlorination was started (chlorine). Start temperature 70 ° C).
- the temperature of the aqueous suspension is kept at 95 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 0.5 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin reached 60.7% by weight was 105.8 ° C. That is, from the start of thermal chlorination until the temperature is raised to 95 ° C., the temperature of the aqueous suspension in the reaction vessel is maintained at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- a vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 65.0% by weight.
- a chlorinated vinyl chloride resin molding was obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- Example 3 Into a glass-lined reaction vessel with an internal volume of 300 liters, 200 kg of deionized water and 56 kg of vinyl chloride resin having an average polymerization degree of 600 are added and stirred to disperse the vinyl chloride resin in water to form a water suspension. The inside of the container was heated to raise the temperature of the aqueous suspension to 70 ° C. Next, after reducing the pressure in the reaction vessel to remove oxygen (oxygen amount 100 ppm), chlorine (oxygen content 50 ppm) was introduced so that the chlorine partial pressure was 0.4 MPa, and thermal chlorination was started (chlorine). Start temperature 70 ° C).
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin reached 61% by weight was 108.0 ° C. That is, from the start of thermal chlorination until the temperature is raised to 100 ° C., the temperature of the aqueous suspension in the reaction vessel is maintained at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- a chlorinated vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.8% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- Example 4 Into a glass-lined reaction vessel with an internal volume of 300 liters, 200 kg of deionized water and 56 kg of vinyl chloride resin having an average polymerization degree of 600 are added and stirred to disperse the vinyl chloride resin in water to form a water suspension. The inside of the container was heated to raise the temperature of the aqueous suspension to 70 ° C. Next, after reducing the pressure in the reaction vessel to remove oxygen (oxygen amount 100 ppm), chlorine (oxygen content 50 ppm) was introduced so that the chlorine partial pressure was 0.4 MPa, and thermal chlorination was started (chlorine). Start temperature 70 ° C).
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the water suspension is kept at 110 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 1.8 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin was 62.5% by weight was 118.6 ° C. That is, from the start of thermal chlorination until the temperature is raised to 110 ° C., the temperature of the aqueous suspension in the reaction vessel is maintained at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- a vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 65.0% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- Example 5 A butyltin malate stabilizer, butyl stearate, MBS resin, acrylic processing aid was added to the chlorinated vinyl chloride resin obtained in Example 1, and the chlorinated vinyl chloride resin content was 88.4% by weight, Butyltin malate stabilizer content is 2.6 wt%, butyl stearate content is 0.5 wt%, MBS resin content is 7.5 wt%, acrylic processing aid content is 1.0 wt% %, A chlorinated vinyl chloride resin composition was prepared.
- the obtained chlorinated vinyl chloride resin composition is wound with a roll at 190 ° C., kneaded for 1 minute, then preheated for 3 minutes with a press at 185 ° C., and pressed for 4 minutes to form a plate having a thickness of 2 mm A chlorinated vinyl chloride resin molded product was obtained.
- Example 6 To the chlorinated vinyl chloride resin obtained in Example 1, vinyl chloride resin, butyltin malate stabilizer, butyl stearate, MBS resin, acrylic processing aid was added, and the chlorinated vinyl chloride resin content was 82. 5% by weight, vinyl chloride resin 2.8% by weight, butyltin malate stabilizer content 1.9% by weight, butyl stearate content 0.5% by weight, MBS resin content 4.6% by weight A chlorinated vinyl chloride resin composition was prepared so that the acrylic processing aid content was 1.5% by weight.
- the obtained chlorinated vinyl chloride resin composition is wound with a roll at 190 ° C., kneaded for 1 minute, then preheated for 3 minutes with a press at 185 ° C., and pressed for 4 minutes to form a plate having a thickness of 2 mm A chlorinated vinyl chloride resin molded product was obtained.
- Example 7 To the chlorinated vinyl chloride resin obtained in Example 1, vinyl chloride resin, butyltin malate stabilizer, butyl stearate, MBS resin, acrylic processing aid was added, and the chlorinated vinyl chloride resin content was 78. 5 wt%, vinyl chloride resin 14.0 wt%, butyltin malate stabilizer content 1.9 wt%, butyl stearate content 0.5 wt%, MBS resin content 4.6 wt% A chlorinated vinyl chloride resin composition was prepared so that the acrylic processing aid content was 0.5% by weight.
- the obtained chlorinated vinyl chloride resin composition is wound with a roll at 190 ° C., kneaded for 1 minute, then preheated for 3 minutes with a press at 185 ° C., and pressed for 4 minutes to form a plate having a thickness of 2 mm A chlorinated vinyl chloride resin molded product was obtained.
- Example 8 A butyltin malate stabilizer, butyl stearate, MBS resin, acrylic processing aid was added to the chlorinated vinyl chloride resin obtained in Example 1, and the chlorinated vinyl chloride resin content was 95.2% by weight, Butyltin malate stabilizer content is 0.8 wt%, butyl stearate content is 0.5 wt%, MBS resin content is 3.0 wt%, acrylic processing aid content is 0.5 wt% %, A chlorinated vinyl chloride resin composition was prepared.
- the obtained chlorinated vinyl chloride resin composition is wound with a roll at 190 ° C., kneaded for 1 minute, then preheated for 3 minutes with a press at 185 ° C., and pressed for 4 minutes to form a plate having a thickness of 2 mm A chlorinated vinyl chloride resin molded product was obtained.
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the aqueous suspension is kept at 95 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 0.1 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature at the time when the chlorine content of the partially chlorinated vinyl chloride resin reached 58.0% by weight was 86.6 ° C. That is, the temperature of the aqueous suspension in the reaction vessel exceeded the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel from the start of thermal chlorination until the temperature was raised to 95 ° C. I understood.
- a chlorinated vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.8% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the aqueous suspension is kept at 100 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 2.8 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin was 58.9% by weight was 93.0 ° C. That is, it was found that the temperature of the aqueous suspension in the reaction vessel exceeded the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel from the start of thermal chlorination until the temperature was raised to 100 ° C. It was.
- a chlorinated vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.9% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the aqueous suspension is kept at 110 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 3.0 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin reached 59.4% by weight was 96.5 ° C. That is, the temperature of the water suspension in the reaction vessel exceeded the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel from the start of thermal chlorination until the temperature was raised to 110 ° C. I understood.
- a vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.0% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin was 58.3% by weight was 91.5 ° C. That is, from the start of thermal chlorination until the temperature is raised to 90 ° C., the temperature of the aqueous suspension in the reaction vessel is kept at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- a chlorinated vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.9% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- the glass transition temperature of the partially chlorinated vinyl chloride resin was determined by DSC (differential scanning calorimetry) according to JIS K7121.
- the temperature of the aqueous suspension is kept at 90 ° C. and the chlorine partial pressure is kept at 0.4 MPa.
- the supply of chlorine gas was stopped and thermal chlorination was completed.
- the net stirring power (Pv) in the reaction vessel from the start of thermal chlorination to the end of thermal chlorination was 0.6 kw / m 3 .
- 200 ppm of hydrogen peroxide water is added until the end of the chlorination reaction so that the hydrogen peroxide is 15 ppm / Hr as vinyl peroxide resin. did.
- the glass transition temperature when the chlorine content of the partially chlorinated vinyl chloride resin was 55.8% by weight was 91.3 ° C. That is, from the start of thermal chlorination until the temperature is raised to 90 ° C., the temperature of the aqueous suspension in the reaction vessel is kept at a temperature lower than the glass transition temperature of the partially chlorinated vinyl chloride resin in the reaction vessel. I found out.
- a chlorinated vinyl chloride resin was obtained.
- the obtained chlorinated vinyl chloride resin had a chlorine content of 64.8% by weight.
- a chlorinated vinyl chloride resin composition and a chlorinated vinyl chloride resin molding were obtained in the same manner as in Example 1 except that the obtained chlorinated vinyl chloride resin was used.
- the yellowing degree was measured with a color difference meter made by Nippon Denshoku Industries Co., Ltd., using the obtained 2 mm thick plate-like chlorinated vinyl chloride resin molded body as a test piece.
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Abstract
Description
また、特許文献1の実施例1には、所定量の脱イオン水とPVCを投入、攪拌してPVCを水中に分散させた後、加熱、減圧を行い、塩素を導入し反応を開始すると同時に昇温して、塩素含有率が61重量%に到達した後、所定量の過酸化水素水を添加し、塩素含有率が65重量%に達した時点で塩素化を終了してCPVCを得る方法が記載されている。
また、上記塩化ビニル単量体と上記塩化ビニル単量体と共重合可能な他の単量体との塩化ビニル共重合体は、塩化ビニル単量体を50重量%以上含むことが好ましい。
また、上記塩化ビニル系樹脂の平均重合度は一般に600~2000である。
塩化ビニル系樹脂を水に懸濁させた状態とするには、水媒体中に塩化ビニル系樹脂粉末を添加攪拌して分散させ懸濁させればよい。なお、塩化ビニル系樹脂が水懸濁重合で得られた場合は、塩化ビニル系樹脂が水懸濁状態になっているのでそのまま使用できる。
なお、本発明において、熱塩素化とは、紫外線照射することなく加熱して熱塩素化する反応である。
上記反応液の温度が55℃未満であると、熱塩素化は殆ど進まず、非効率となる。上記温度が70℃を超えると、得られた塩素化塩化ビニル系樹脂の熱安定性が低下し、成形体の透明性が低下する。
好ましくは57~67℃である。
上記工程2では、所定の温度に保ちながら、熱塩素化工程を行う。
なお、本発明で「部分塩素化塩化ビニル系樹脂」とは、塩素化工程の途中における塩素化塩化ビニル系樹脂をいうものである。
また、本発明で「部分塩素化塩化ビニル系樹脂のガラス転移温度」とは、塩素含有率から推定されるガラス転移温度をいう。
このような工程3を行うことで、得られた塩素化塩化ビニル系樹脂の熱安定性が低下し、透明性に優れる成形体を作製可能な塩素化塩化ビニル系樹脂とすることができる。
なお、本明細書では、特に「85℃以上、115℃未満の所定温度」を「熱塩素化温度」ともいう。
上記塩素含有率が58重量%未満において、上記所定温度で熱塩素化した場合、一気に反応が進行し、均一な塩素化反応することができなくなる。なお、工程3において、上記塩素含有率は72重量%以下とすることが好ましい。
また、上記工程3では、上記部分塩素化塩化ビニル系樹脂の塩素含有率が60重量%以上、62重量%未満となった後に95℃以上、105℃未満の所定温度で熱塩素化することが好ましい(工程3-2)。
更に、上記工程3では、上記部分塩素化塩化ビニル系樹脂の塩素含有率が62重量%以上となった後に105℃以上、115℃未満の所定温度で熱塩素化することが好ましい(工程3-3)。
このように塩素含有率に合わせて熱塩素化温度を変化させることで、昇温時間は長くなるが、熱塩素化温度が高くなるので熱塩素化速度は速くなり、全体の熱塩素化時間は短縮される。又、熱塩素化温度を高くしても得られた塩素化塩化ビニル系樹脂の熱安定性(初期着色製及び耐熱安定性)が低下することはない。
なお、上記工程3-1、工程3-2及び工程3-3は、何れか1のみを行ってもよく、2以上を重複して行ってもよい。
上記正味撹拌動力が、0.2kw/m3未満であると、充分な撹拌が得られずジャケット近傍と中心部の温度に分布ができ不均一な塩素化反応となる。上記正味撹拌動力が、2.5kw/m3を超えると、撹拌が強すぎて気泡を溶液中に巻き込んでしまい、均一な塩素化反応ができなくなる。上記正味撹拌動力Pvは、反応液1m3当たり0.3~2.0kw/m3であることが好ましい。
ここで、Npは動力数、ρは反応容器の内容物の密度(kg/m3)、nは撹拌翼の回転数(1/秒)、dは翼長(m)、vは反応容器内の液量(m3)、gcは重力換算係数を、それぞれ示す。
通常一定の攪拌回転数では重合開始後の系の粘度上昇と共にPvは大きくなり、その後一定となるがその上昇は僅かである。攪拌回転数は反応期間中一定でも良いし、また途中で変更しても良いが、工程1~3において、上記正味撹拌動力が0.2~2.5kw/m3の範囲内でなければならない。
従って、上記過酸化水素は、反応容器内の部分塩素化塩化ビニル系樹脂の塩素含有率が58重量%以上となった後に添加することが好ましい。
なお、上記過酸化水素の添加は、連続的であってもよく、断続的であってもよい。
また、上記過酸化水素の全添加量は、塩化ビニル系樹脂に対して10~300ppmが好ましく、より好ましくは、20~200ppmである。上記過酸化水素の全添加量が10ppm未満であると、反応速度の促進効果が発揮されないことがあり、300ppmを超えると、熱安定性が損なわれることがある。
得られた塩素化塩化ビニル系樹脂を含有するスラリーを水洗して塩酸を除去し、必要に応じて中和剤等を加え、脱水、乾燥することにより所定の塩素含有率の塩素化塩化ビニル系樹脂粉末を得ることができる。
このような塩素化塩化ビニル系樹脂成型体もまた本発明の1つである。
また、本発明の塩素化塩化ビニル系樹脂成型体は、厚さ5mmの板状とした場合の透明度が1~10であることが好ましい。これにより、透明性が必要とされる工業板やパイプ等に好適に用いることができる。
なお、上記透明度は、例えば、ヘイズメーターを用いて測定することができる。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が58.2重量%となった時点でのガラス転移温度は91.1℃であった。即ち、熱塩素化開始から90℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていることが分かった。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつけた後、1分間ロール混練し、次いで185℃のプレスで3分間予熱し、4分間加圧することで、厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が60.7重量%となった時点でのガラス転移温度は105.8℃であった。即ち、熱塩素化開始から95℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていたことが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が61重量%となった時点でのガラス転移温度は108.0℃であった。即ち、熱塩素化開始から100℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていることが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が62.5重量%となった時点でのガラス転移温度は118.6℃であった。即ち、熱塩素化開始から110℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていることが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
実施例1で得られた塩素化塩化ビニル樹脂にブチル錫マレート系安定剤、ブチルステアレート、MBS樹脂、アクリル系加工助剤を添加し、塩素化塩化ビニル樹脂含有量が88.4重量%、ブチル錫マレート系安定剤含有量が2.6重量%、ブチルステアレート含有量が0.5重量%、MBS樹脂含有量が7.5重量%、アクリル系加工助剤含有量が1.0重量%となるように塩素化塩化ビニル樹脂組成物を調製した。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつき後、1分間ロール混練し、次いで185℃のプレスで3分間予熱し、4分間加圧することで、厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を得た。
実施例1で得られた塩素化塩化ビニル樹脂に塩化ビニル樹脂、ブチル錫マレート系安定剤、ブチルステアレート、MBS樹脂、アクリル系加工助剤を添加し、塩素化塩化ビニル樹脂含有量が82.5重量%、塩化ビニル樹脂2.8重量%、ブチル錫マレート系安定剤含有量が1.9重量%、ブチルステアレート含有量が0.5重量%、MBS樹脂含有量が4.6重量%、アクリル系加工助剤含有量が1.5重量%となるように塩素化塩化ビニル樹脂組成物を調製した。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつき後、1分間ロール混練し、次いで185℃のプレスで3分間予熱し、4分間加圧することで、厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を得た。
実施例1で得られた塩素化塩化ビニル樹脂に塩化ビニル樹脂、ブチル錫マレート系安定剤、ブチルステアレート、MBS樹脂、アクリル系加工助剤を添加し、塩素化塩化ビニル樹脂含有量が78.5重量%、塩化ビニル樹脂14.0重量%、ブチル錫マレート系安定剤含有量が1.9重量%、ブチルステアレート含有量が0.5重量%、MBS樹脂含有量が4.6重量%、アクリル系加工助剤含有量が0.5重量%となるように塩素化塩化ビニル樹脂組成物を調製した。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつき後、1分間ロール混練し、次いで185℃のプレスで3分間予熱し、4分間加圧することで、厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を得た。
実施例1で得られた塩素化塩化ビニル樹脂にブチル錫マレート系安定剤、ブチルステアレート、MBS樹脂、アクリル系加工助剤を添加し、塩素化塩化ビニル樹脂含有量が95.2重量%、ブチル錫マレート系安定剤含有量が0.8重量%、ブチルステアレート含有量が0.5重量%、MBS樹脂含有量が3.0重量%、アクリル系加工助剤含有量が0.5重量%となるように塩素化塩化ビニル樹脂組成物を調製した。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつき後、1分間ロール混練し、次いで185℃のプレスで3分間予熱し、4分間加圧することで、厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が58.0重量%となった時点でのガラス転移温度は86.6℃であった。即ち、熱塩素化開始から95℃に昇温するまでの間に、反応容器内の水懸濁液の温度が反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度の温度を超えていたことが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が58.9重量%となった時点でのガラス転移温度は93.0℃であった。即ち、熱塩素化開始から100℃に昇温するまでの間に、反応容器内の水懸濁液の温度が反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度を超えていたことが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が59.4重量%となった時点でのガラス転移温度は96.5℃であった。即ち、熱塩素化開始から110℃に昇温するまでの間に、反応容器内の水懸濁液の温度が反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度の温度を超えていたことが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を80℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度80℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が58.3重量%となった時点でのガラス転移温度は91.5℃であった。即ち、熱塩素化開始から90℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていることが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
内容積300リットルのグラスライニング製反応容器に、脱イオン水200kgと平均重合度600の塩化ビニル樹脂56kgを投入し、攪拌して塩化ビニル樹脂を水中に分散させ水懸濁状態にした後、反応容器内を加熱して水懸濁液を70℃に昇温した。
次いで、反応容器中を減圧して酸素を除去(酸素量100ppm)した後、塩素分圧が0.4MPaになるように塩素(酸素含有量50ppm)を導入して熱塩素化を開始した(塩素化開始温度70℃)。
なお、部分塩素化塩化ビニル系樹脂のガラス転移温度は、JIS K7121に準拠してDSC(示差走査熱量測定)によって求めた。
なお、熱塩素化工程では、塩素含有率が61重量%に到達後、200ppmの過酸化水素水を、塩化ビニル樹脂に対して過酸化水素として15ppm/Hrとなるように塩素化反応終了まで添加した。
また、部分塩素化塩化ビニル系樹脂の塩素含有率が55.8重量%となった時点でのガラス転移温度は91.3℃であった。即ち、熱塩素化開始から90℃に昇温するまでの間は、反応容器内の水懸濁液の温度は反応容器内の部分塩素化塩化ビニル樹脂のガラス転移温度以下の温度に保たれていることが分かった。
得られた塩素化塩化ビニル樹脂を用いた以外は実施例1と同様にして塩素化塩化ビニル樹脂組成物、塩素化塩化ビニル系樹脂成型体を得た。
実施例及び比較例で得られた塩素化塩化ビニル樹脂組成物及び塩素化塩化ビニル系樹脂成型体について、以下の評価を行った。結果を表1に示した。
得られた厚さ2mmの板状の塩素化塩化ビニル系樹脂成型体を試験片として用い、日本電色工業社製色差計で黄変度を測定した。
得られた塩素化塩化ビニル樹脂組成物を190℃のロールで巻きつき後1分間ロール混練して作製したシートを200℃のギヤオーブン中で加熱し、黒化するまでの時間(分)を測定した。
得られた塩素化塩化ビニル樹脂組成物を165℃のロールで巻きつき後1分間ロール混練し、165℃のプレスで3分間予熱し、4分間加圧して、厚さ5mmの板状の試験片を得た。得られた試験片を用い、日本電色工業社製HAZE METERで透明度を測定した。
Claims (6)
- 密閉可能な反応容器内において、塩化ビニル系樹脂を含有する塩化ビニル水懸濁液からなる反応液を熱塩素化する塩素化塩化ビニル系樹脂の製造方法であって、
前記反応液を加熱して温度55~70℃で反応容器内に塩素を導入して熱塩素化を開始する工程1、
前記反応容器内の温度を部分塩素化塩化ビニル系樹脂のガラス転移温度以下の温度に保ちながら昇温する工程2、及び、
前記部分塩素化塩化ビニル系樹脂の塩素含有率が58重量%以上となった後に85℃以上、115℃未満の所定温度で熱塩素化する工程3を有し、
前記工程1~3において、反応容器内の正味撹拌動力(Pv)を反応液1m3当たり0.2~2.5kw/m3とする
ことを特徴とする塩素化塩化ビニル系樹脂の製造方法。 - 工程3において、部分塩素化塩化ビニル系樹脂の塩素含有率が58重量%以上、60重量%未満となった後に85℃以上、95℃未満の所定温度で熱塩素化することを特徴とする請求項1記載の塩素化塩化ビニル系樹脂の製造方法。
- 工程3において、部分塩素化塩化ビニル系樹脂の塩素含有率が60重量%以上、62重量%未満となった後に95℃以上、105℃未満の所定温度で熱塩素化することを特徴とする請求項1記載の塩素化塩化ビニル系樹脂の製造方法。
- 工程3において、部分塩素化塩化ビニル系樹脂の塩素含有率が62重量%以上となった後に105℃以上、115℃未満の所定温度で熱塩素化することを特徴とする請求項1記載の塩素化塩化ビニル系樹脂の製造方法。
- 請求項1記載の塩素化塩化ビニル系樹脂の製造方法を用いて得られる塩素化塩化ビニル系樹脂を含有することを特徴とする塩素化塩化ビニル系樹脂成型体。
- 塩素化塩化ビニル系樹脂を80~95重量%含有し、厚さ5mmの板状とした場合の透明度が1~10であることを特徴とする請求項5記載の塩素化塩化ビニル系樹脂成型体。
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| WO2020203839A1 (ja) * | 2019-03-29 | 2020-10-08 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| WO2020203828A1 (ja) * | 2019-03-29 | 2020-10-08 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| JPWO2020203840A1 (ja) * | 2019-03-29 | 2021-04-30 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| CN115386027A (zh) * | 2022-09-14 | 2022-11-25 | 杭州新元化工技术开发有限公司 | 一种制备氯化聚氯乙烯的方法 |
| US12351672B2 (en) | 2019-03-29 | 2025-07-08 | Sekisui Chemical Co., Ltd. | Chlorinated vinyl-chloride-based resin |
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| KR102684209B1 (ko) * | 2018-12-19 | 2024-07-10 | 한화솔루션 주식회사 | 염소화 폴리염화비닐 수지의 제조 방법 |
| KR102465041B1 (ko) * | 2019-03-29 | 2022-11-09 | 세키스이가가쿠 고교가부시키가이샤 | 염소화 염화비닐계 수지 |
| CN110172111B (zh) * | 2019-05-09 | 2022-05-10 | 山东高信化学股份有限公司 | 一种胶水用耐低温高氯化聚乙烯树脂的制备方法 |
| CN110256612B (zh) * | 2019-07-09 | 2021-09-07 | 山东高信化学股份有限公司 | 一种氯化聚氯乙烯的制备方法 |
| CN114929758B (zh) * | 2020-03-31 | 2023-10-13 | 积水化学工业株式会社 | 氯化聚氯乙烯系树脂 |
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| WO2020203839A1 (ja) * | 2019-03-29 | 2020-10-08 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| WO2020203828A1 (ja) * | 2019-03-29 | 2020-10-08 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| JPWO2020203840A1 (ja) * | 2019-03-29 | 2021-04-30 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| JPWO2020203828A1 (ja) * | 2019-03-29 | 2021-04-30 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| JPWO2020203839A1 (ja) * | 2019-03-29 | 2021-10-14 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| JP7041264B2 (ja) | 2019-03-29 | 2022-03-23 | 積水化学工業株式会社 | 塩素化塩化ビニル系樹脂 |
| US12037423B2 (en) | 2019-03-29 | 2024-07-16 | Sekisui Chemical Co., Ltd. | Chlorinated vinyl-chloride-based resin |
| US12104004B2 (en) | 2019-03-29 | 2024-10-01 | Sekisui Chemical Co., Ltd. | Chlorinated vinyl chloride resin |
| US12187883B2 (en) | 2019-03-29 | 2025-01-07 | Sekisui Chemical Co., Ltd. | Chlorinated vinyl chloride resin |
| US12351672B2 (en) | 2019-03-29 | 2025-07-08 | Sekisui Chemical Co., Ltd. | Chlorinated vinyl-chloride-based resin |
| CN115386027A (zh) * | 2022-09-14 | 2022-11-25 | 杭州新元化工技术开发有限公司 | 一种制备氯化聚氯乙烯的方法 |
| CN115386027B (zh) * | 2022-09-14 | 2024-05-24 | 杭州新元化工技术开发有限公司 | 一种制备氯化聚氯乙烯的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3127926A1 (en) | 2017-02-08 |
| EP3127926A4 (en) | 2017-10-18 |
| JPWO2015152260A1 (ja) | 2017-04-13 |
| CN106103501A (zh) | 2016-11-09 |
| JP6469086B2 (ja) | 2019-02-13 |
| US20170008981A1 (en) | 2017-01-12 |
| KR20160140619A (ko) | 2016-12-07 |
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