WO2006016639A1 - (メタ)アクリル酸エステル重合体または共重合体の連続的製造方法 - Google Patents
(メタ)アクリル酸エステル重合体または共重合体の連続的製造方法 Download PDFInfo
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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
- C08F220/00—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 a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
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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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
- C08F297/026—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising acrylic acid, methacrylic acid or derivatives thereof
Definitions
- the living anion polymerization method is a polymerization method suitable for conducting molecular design of the primary structure of a block copolymer, controlling the molecular weight of a polymer with few side reactions such as chain transfer and deactivation. is there. Therefore, in recent years, block copolymers or graft copolymers useful for thermoplastic elastomers and polymer compatibilizers, telechelic polymers having reactive functional groups, and rosins for coatings as hot-melt adhesive materials It has been attracting attention as a method for producing a polymer that requires molecular design, such as a star-type polymer useful for such purposes, which has been difficult with ordinary radical polymerization methods.
- Examples of monomers capable of cation polymerization include nonpolar cation polymerizable monomers such as styrene, butadiene, isoprene, and derivatives thereof; methacrylate esters, acrylate esters, methacrylamides, acrylamides, and methacrylates.
- Polar-on polymerizable monomers such as mouth-tolyl, acrylonitrile and their derivatives.
- Nonpolar key-polymerizable monomers can be ion-polymerized while maintaining high living properties, and have already been applied to industrial polymerization.
- the polar monomer polymerizable monomer usually undergoes side reaction with the polar functional group (ester group, amide group, nitrile group, etc.) in the monomer during the polymerization of the monomer. I will. Therefore, in order to suppress the side reaction and to carry out living-on polymerization of a polar 'polar-on polymerization' monomer, it is generally necessary to polymerize under a cryogenic condition such as 78 ° C. However, there were problems such as requiring a large amount of cooling equipment and increasing the equipment cost during the industrial process.
- a polymerization reaction method raw materials to be used are collectively supplied to a polymerization reaction tank, and after completion of the reaction, the reaction mixture is extracted and led to a polymer isolation step, and if necessary, the polymerization reaction tank A batch system in which the next polymerization reaction is performed after washing; the raw material is continuously supplied to the polymerization reaction tank, and the reaction mixture is continuously taken out from the reaction system to lead to the polymer isolation step.
- Patent Document 1 Japanese Patent Laid-Open No. 6-56910
- Patent Document 2 US Pat. No. 5,886,112 Specification
- Patent Document 3 US Patent No. 6013735
- Example 1 of (1) above the force to obtain polymethyl methacrylate (PMMA) with a molecular weight distribution of 1.09, which is very narrow.
- the reaction temperature is an extremely low temperature of 78 ° C. It is difficult.
- a polar monomer such as metatalylate or attalylate is preferably 40 ° C. or less” as a suitable reaction temperature, but it is also adopted industrially at 40 ° C. It is difficult.
- a polar monomer such as metatalylate or attalylate is preferably 40 ° C. or less
- the molecular weight distribution of the obtained star polymer is 1.3 to 1.8, and the molecular weight distribution of the polymer obtained by ordinary living-on polymerization
- the polymerization method (3) which is more powerful than that of 1.01 to 1.20, is also insufficient in living properties. Disclosure of the invention
- the ratio of the molar amount of methacrylic acid ester or acrylic acid ester to be fed to the reactor and ((molar amount of organoaluminum compound) [molar amount of polymerization initiator]) ⁇ Molar amount of methacrylic acid ester or acrylic acid ester] z ([Mole amount of organoaluminum compound] [Mole amount of polymerization initiator]) ⁇ is controlled within a specific range and supplied to the reactor.
- the content of methacrylic acid ester or acrylic acid ester in the total supply amount of polymerization initiator solution and methacrylic acid ester or acrylic acid ester supplied to the reactor is controlled to 5% by mass or less.
- Two or more reactors are connected in series, and a polymerization initiator solution containing an organoaluminum compound and at least one methacrylic acid ester or acrylate ester are continuously supplied to the first reactor to produce organoaluminum.
- a polymerization reaction liquid containing a compound and a living polymer of methacrylic acid ester and Z or acrylic acid ester and then the same as the polymerization reaction liquid and the methacrylic acid ester or acrylic acid ester supplied to the first reactor or At least one different methacrylic acid ester or acrylic acid ester is continuously fed to the (n + 1) th reactor (n represents a natural number), and the organoaluminum compound, the methacrylic acid ester and the Z or acrylate ester are supplied.
- methacrylate methacrylate fed to the reactor Ratio of molar amount of tellurium or acrylic ester to ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) ⁇ [molar amount of methacrylic ester or acrylic ester
- the content of methacrylic acid ester or acrylic acid ester in the total supply amount of polymerization initiator solution or polymerization reaction liquid and methacrylic acid ester or acrylic acid ester supplied to the reactor is controlled to 5% by mass or less.
- the molecular weight distribution is narrow V, while maintaining a high polymerization rate and high living property under mild conditions, without using extremely low temperature conditions as in the conventional method.
- a (meth) acrylic acid ester polymer or copolymer can be produced with high yield and high productivity.
- polymerization initiator used in the present invention a well-known key-on polymerization initiator can be used. Examples thereof include organic lithium compounds, organic sodium compounds, organic potassium compounds, and organic magnesium compounds.
- Examples of the organic lithium compound include methyllithium, ethyllithium, n-propynolethium, isopropyllithium, n-butynolethium, sbutynolethium, isobutyllithium, t-butyllithium, n-pentyllithium, n-hexyl.
- Examples of the organic sodium compound include methyl sodium, ethyl sodium, n-propyl sodium, isopropyl sodium, n-butinole sodium, s butinole sodium, isobutyl sodium, t-butyl sodium, n-pentyl sodium, n-hexyl sodium, tetramethylene disodium, pentamethylene disodium, hexamethylene dinatryl sodium, p-tolyl sodium, xylyl sodium, sodium naphthalene, etc.
- organomagnesium compound examples include dimethylmagnesium, jetylmagnesium, dibutylmagnesium, ethylbutylmagnesium, methylmagnesium chloride, ethylmagnesium chloride, ethylmagnesium bromide, phenolmagnesium chloride, and phenolmagnesium.
- organomagnesium compound examples include dimethylmagnesium, jetylmagnesium, dibutylmagnesium, ethylbutylmagnesium, methylmagnesium chloride, ethylmagnesium chloride, ethylmagnesium bromide, phenolmagnesium chloride, and phenolmagnesium.
- a part of the polymerization initiator is also used as a living-on polymerization initiator such as a linear or cyclic conjugation compound, a vinyl aromatic compound, and (meth) acrylic acid amide.
- a living polymer having a metal active terminal thus formed may be used as the polymerization initiator of the present invention.
- an arbitrary polymer having an anion capable site may be used as a polymerization initiator of the present invention after being turned on with a vinyl polymerization initiator such as an organolithium compound.
- poly ( ⁇ -methylstyrene) dissolved in cyclohexane in an inert gas atmosphere is reacted with s-butyllithium in the presence of ⁇ , ⁇ , ⁇ ', ⁇ , monotetramethylethylenediamine
- poly ( ⁇ -methylstyrene) having an appropriate amount of the methyl group at the para position can be obtained, and a graft copolymer can be obtained by using this as a polymerization initiator. it can.
- the amount of the polymerization initiator used is not particularly limited, but usually the concentration in the polymerization reaction solution is in the range of 0.1 to 100 mmolZl, preferably in the range of 1 to 10 mmolZl. It is preferable that the target polymer or copolymer can be produced smoothly.
- the organoaluminum compound used in the present invention has the following general formula (I):
- R 1 R 2 and R 3 are each independently an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, or an aryl group which may have a substituent.
- R 1 represents any one of the groups described above, and R 2 and R 3 together have a substituent and may represent a mono-dioxy group.
- organoaluminum compound (I) an organoaluminum compound represented by the formula (hereinafter referred to as organoaluminum compound (I)).
- the alkyl groups represented by R ⁇ R 2 and R 3 are, for example, methyl group, ethyl group, n propyl group, isopropyl group, n butyl group, isobutyl group, s butyl group, t butyl group. Group, 2-methylbutyl group, 3-methylbutyl group, n-octyl group, 2-ethylhexyl group and the like.
- the cycloalkyl group include cyclopentyl group, cyclohexyl group and the like.
- alkyl groups and cycloalkyl groups may have a substituent, for example, as an alkoxy group such as methoxy group, ethoxy group, isopropoxy group, t-butoxy group; chlorine atom, bromine atom And halogen atoms.
- Examples of the aryl group represented by R 2 and R 3 include a phenyl group and a naphthyl group, and examples of the aralkyl group include a benzyl group and a 1 phenyl group. These aryl groups and aralkyl groups may have a substituent. For example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n butyl group, an isobutyl group, or an s butyl group may be used.
- T-butyl group 2-methylbutyl group, 3-methylbutyl group, n-octyl group, 2-ethylhexyl group and other alkyl groups; methoxy group, ethoxy group, isopropoxy group, t-butoxy group and other alkoxyl groups; chlorine And halogen atoms such as atoms and bromine atoms.
- substituents include a methyl group, an ethyl group, an npropyl group, an isopropyl group, and an nbutyl group.
- Examples include alkoxyl groups such as butoxy groups; halogen atoms such as chlorine and bromine.
- the arylenedioxy group represented by R 2 and R 3 together includes, for example, 2, 2, Phenol, 2, 2, 1-methylene bisphenol, 2, 2, 1-methylene bis (4-methyl 6-t butyl phenol), (R) — (+) —l, 1, —b 2-naphthol, (S) — Examples include (—)-1, 1, 1 and 1 2-naphthol.
- These arylenedioxy groups which may have one or more substituents include, for example, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, and an isobutyl group.
- Alkyl groups such as butyl group, t-butyl group, 2-methylbutyl group, 3-methylbutyl group, n-octyl group, 2-ethylhexyl group; alkoxyl groups such as methoxy group, ethoxy group, isopropoxy group, t-butoxy group Group; halogen atoms such as chlorine atom, bromine atom and the like.
- the organoaluminum compound (I) is used from the viewpoint of improving the living property during the polymerization reaction of the (meth) acrylic acid ester. It is preferable that at least one of R 2 and R 3 is an aryloxy group which may have a substituent. It is more preferable that two of R 2 and R 3 have a substituent but are aryloxy groups. You may have a powerful substituent!
- organoaluminum compound (I) include jetyl (2,6 di-t-butyl-4-methylphenoxy) aluminum and jetyl (2,6 di-t-butylphenoxy).
- Examples of the methacrylic acid ester used as a raw material in the method of the present invention include, for example, methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, allylic methacrylate, n-butyl methacrylate, and t-butyl methacrylate.
- acrylic ester used as a raw material in the method of the present invention examples include methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, aryl acrylate, n-butyl acrylate, and t-butyl acrylate.
- Cyclohexyl acrylate atari Benzyl sulfate, 2-ethylhexyl acrylate, lauryl acrylate, glycidyl acrylate, trimethoxysilylpropyl acrylate, methoxyethyl acrylate, 2- (2-ethoxyethoxy) ethyl acrylate, acrylic acid and N dimethylamino Examples include ethyl, acrylic acid and N-ethylaminoethyl.
- a polyfunctional compound having two or more carbon-carbon double bonds in the molecule can also be used as the (meth) acrylic acid ester.
- a macromonomer having a carbon-carbon double bond of (meth) acrylic acid ester at the terminal can also be used as the (meth) acrylate ester.
- (Meth) acrylic acid ester may be used alone or in combination of two or more.
- (meth) acrylic acid esters may be used after diluting at an arbitrary ratio using a solvent used for polymerization.
- the (meth) acrylic acid ester used in the method of the present invention should be sufficiently dried in advance under an inert gas atmosphere such as nitrogen, argon, helium, or the like. A point force for smoothly proceeding is also preferable.
- a dehydrating agent or a drying agent such as calcium hydride, molecular sieves or activated alumina is preferably used.
- the method of the present invention is carried out in the presence of a solvent.
- the solvent to be used is not particularly limited as long as it does not adversely influence the reaction.
- aliphatic hydrocarbons such as pentane, n-xane, and octane; cyclopentane, methylcyclopentane, cyclohexane, methylcyclohexane, and ethylcyclohexane
- alicyclic hydrocarbons such as: aromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylene; ethers such as jetyl ether, tetrahydrofuran, 1,4 dioxane, ether, and diphenyl ether.
- the method of the present invention is preferably carried out in an atmosphere of an inert gas such as nitrogen, argon or helium.
- the additives include ethers such as dimethyl ether, dimethoxyethane, diethoxyethane, 12-crown-4; triethylamine, N, N, N,, N, tetramethylethylenediamine, N, N, N ′, N Organic nitrogen-containing compounds such as ", N" -pentamethylethylethylenetriamine, 1, 1, 4, 7, 10, 10-hexamethyltriethylenetetramine, pyridine, 2, 2, -dipyridyl; triethylphosphine, triphenyl- Organic phosphorus compounds such as ruphosphine and 1,2-bis (diphenylphosphino) ethane; inorganic salts such as lithium chloride, sodium chloride and potassium salt; lithium (2-methoxy
- ethers and organic nitrogen-containing compounds are preferred, and with a small amount of addition, while maintaining high rebirability, the polymerization can proceed rapidly, simplifying the solvent recovery process and reducing the wastewater treatment load. From this point of view, organic nitrogen-containing compounds are more preferred.
- These additives may be used alone or in combination of two or more.
- the amount used is not particularly limited, but the concentration in the polymerization reaction solution is usually preferably in the range of 0.1 to 100 mmol Zl, and in the range of l to 10 mmol Zl. It is preferable.
- the polymerization rate in the char-on polymerization depends on the monomer concentration in the polymerization reaction solution, and when the monomer concentration is high, the polymerization rate is large, and when the monomer concentration is low, the polymerization rate tends to be low. Indicates. Therefore, in normal batch-type key-on polymerization, the polymerization rate is generally lower in the late polymerization period where the monomer concentration is lower than in the early polymerization period where the monomer concentration is high. In order to increase the conversion rate. Is that it takes time to drive in the late stage of polymerization. Has a subject.
- the organoaluminum compound (I) is more strongly coordinated with the polymerization initiator or the active terminal species of the living polymer than the (meth) acrylic acid ester, so that the unreacted (meth) acrylic acid ester
- the molar amount of the organoaluminum compound (I) involved in the activity of the polymer is a value obtained by subtracting the molar amount of the polymerization initiator from the molar amount of the organoaluminum compound (I) present in the polymerization reaction solution (hereinafter referred to as the This is called “[molar amount of organoaluminum compound] [molar amount of polymerization initiator]”).
- the deactivation reaction tends to increase, the living property decreases, and the control of the molecular weight and molecular weight distribution becomes difficult.
- the block copolymer when the block copolymer is produced, the polymer deactivated in the course of the polymerization reaction is mixed in the final product without subsequent growth, and the content of the target block copolymer in the final product is determined. Is unfavorable because of lowering.
- the molar ratio is less than 15, the cost of the organoaluminum compound (I) increases, and the removal of the organoaluminum compound (I) from the reaction mixture after termination of the polymerization becomes complicated.
- the deactivation rate depends on the monomer concentration, and when the monomer concentration is high, the deactivation rate increases. Thus, it was found that the deactivation rate becomes small when the monomer concentration is low. Therefore, in the method of the present invention, in order to suppress such deactivation, the methacrylate or acrylic acid in the total supply amount of the polymerization initiator solution and methacrylic acid ester or acrylic acid ester supplied to the reactor is reduced. It has been found that the deactivation reaction can be reduced by controlling the content of the acid ester to 5% by mass or less.
- three reactors can be connected in series to produce an A-B-A type or A-B-C type triblock copolymer. It is also possible to produce a high molecular weight homopolymer by connecting two or more reactors in series and supplying the same monomer in each reactor. And a graft copolymer can also be manufactured by supplying a macromonomer as a monomer to each reactor. In this way, by selecting the type of monomer and combining the reactor, various types of copolymers having a molecular design such as a random copolymer, a block copolymer, and a graft copolymer according to the intended use of the polymer. Coalescence can be produced.
- the residence time of the polymerization reaction solution in the reactor varies depending on the type of (meth) acrylic acid ester used for the polymerization and the polymerization temperature. On the other hand, it is preferably 1 to: LOO times.
- the residence time is less than 1 time with respect to the time required for polymerization, the polymerization reaction solution is discharged from the reactor without completing the polymerization reaction in the reactor.
- the (meth) acrylate ester of the reaction causes polymerization such as formation of high molecular weight in the piping after leaving the reactor, or it has not reacted with the polymer or copolymer as a product.
- (Meth) acrylic acid ester may remain.
- the residence time is greater than 100 times the time required for polymerization, the rate of spontaneous deactivation of the polymerization active terminal tends to increase.
- the time required for polymerization varies depending on the type of (meth) acrylic acid ester. For example, when an acrylic acid ester is used as the (meth) acrylic acid ester, the polymerization time is less than 10 seconds. It is also possible to complete the polymerization within seconds.
- the polymerization temperature may be selected according to the type of (meth) acrylic acid ester used and the concentration in the polymerization reaction solution, but the polymerization time can be shortened. Also, from the viewpoint of low deactivation reaction during polymerization, the temperature is usually in the range of -20 to 80 ° C. Degree is preferred. This is an extremely mild temperature condition as compared to the conventional (one) polymerization conditions for (meth) acrylic acid esters. Therefore, when the method of the present invention is industrially performed, it is compared with the conventional method. The cost of the cooling facility can be greatly reduced.
- a polymerization reactor that is usually used in a continuous production method can be used without particular limitation, and examples thereof include a tubular reactor, a tank reactor, and the like. .
- the tubular reactor is preferred, and the static mixer type reactor having a static stirring function is particularly preferred.
- the continuous production method of a (meth) acrylic acid ester polymer or copolymer according to the present invention preferably comprising two or more reactors connected in series and containing an organoaluminum compound.
- a polymerization initiator solution and at least one methacrylic acid ester or allylic acid ester are continuously fed to the first reactor to contain a living polymer of an organoaluminum compound and a methacrylic acid ester and Z or an acrylate ester.
- a polymerization reaction liquid is obtained, and subsequently, a strong polymerization reaction liquid and at least one methacrylic acid ester or acrylic acid ester which is the same as or different from the methacrylic acid ester or acrylic acid ester supplied to the first reactor n + 1) continuously fed to the reactor (n represents a natural number), and the organoaluminum compound and methacrylic acid ester And a polymerization reaction solution containing a Z or acrylate ester living polymer in a continuous manner, and the methacrylic acid ester or acrylate ester fed to at least one of the reactors is supplied to the reactor.
- the polymer or copolymer It is preferable to remove the aluminum derived from the organoaluminum compound after completion of the polymerization because the physical properties of the material using it may be lowered.
- the polymerization reaction liquid after the addition of the polymerization terminator is subjected to a washing treatment using an acidic aqueous solution, an adsorption treatment using an adsorbent such as an ion exchange resin, and the like. It is effective to do.
- the residue is continuously supplied to the melt extruder, It is also possible to recover the polymer or copolymer as strands, pellets or cage blocks by distilling off the solvent under reduced pressure.
- the first reactor is a tank reactor 1 with a stirrer to which a (meth) acrylic ester stock tank 2 is connected.
- the second reactor consists of a jacketed static mixer reactor 8 followed by the reactor. It consists of a total of two tubular reactors in which a jacketed static mixer reactor 9 with a pipe diameter larger than 8 is connected in series. A refrigerant is circulated in the jacket of these jacketed static mixer reactors to control the temperature of each reactor.
- a first reactor and a second (meth) acrylic ester stock tank 5 are connected to the introduction portion of the second reactor via feed pumps 4 and 6, respectively.
- the first tank reactor 1 intermittently or continuously polymerize the first (meth) acrylic acid ester V, and the polymer solution obtained by vigorous reaction in the second tube type.
- the feed pump 4 continuously feeds the introduction part of the reactor 8.
- the second (meth) acrylic acid ester is continuously supplied from the stock tank 5 by the feed pump 6 at the same time, and the second (meth) acrylic ester is fed in the second reactor, that is, the connected tubular reactor.
- a polymerization reaction is performed.
- a polymerization reaction liquid extraction port 10 is provided at the outlet of the second reactor section.
- the polymerization reaction liquid is extracted when the second polymerization is completed, and the polymerization stopping operation force is taken out.
- the extracted polymerization reaction liquid can be temporarily stored in the tank reactor 11 with a stirrer as a stock tank for a short time, and then passed through the first reactor 1 again.
- the polymerization can be repeated by continuously introducing the second (meth) acrylic acid ester into the second reactor (8 and 9). Further, without removing the polymerization reaction solution, the tank reactor 11 with a stirrer was continuously used as the third reactor, and the third (meth) acrylic ester was fed from the stock tank 12 through the feed pump 13.
- a triblock copolymer When supplied and polymerized, a triblock copolymer can be produced if the type of the third (meth) acrylic acid ester is different from that of the second (meth) acrylic acid ester. Thereafter, the polymer or copolymer can be taken out by passing through a series of steps until the polymer is taken out.
- the first reactor is a tank reactor 18 with a stirrer to which a (meth) acrylic ester stock tank 16 is connected.
- the second reactor consists of 15 reactors consisting of two jacketed static mixer reactors (51, 53) and jacketed static mixer reducer 52 as shown in Fig. 3.
- a tubular reactor and a third reaction The vessel consists of a column reactor 44 connected in series therewith.
- the jackets of the jacketed static mixer type reactors (51, 53) and the jacketed static mixer type reducer 52 are circulated to control the temperature of each reactor.
- the first (meth) acrylic acid ester polymerization reaction is carried out intermittently or continuously in the first reactor 18.
- the polymerization reaction liquid obtained by vigorous reaction is continuously fed to the second reactor by the feed pump 19. At that time, if necessary, simultaneously supply the solvent from the solvent stock tank 20 with the feed pump 21 and dilute the polymer solution and the solvent with the mixing static mixer 24 to adjust the concentration of the polymerization reaction solution. To do.
- the polymerization reaction liquid is continuously supplied to the introduction part of the second reactor part, that is, the first jacketed static mixer type 1 reactor 27.
- the second (meth) acrylic ester is simultaneously supplied from the stock tank 22 by the feed pump 23, and the polymerization reaction is carried out in the first static mixer type reactor 27 with a jacket.
- the polymerization reaction solution is continuously introduced into a second jacketed static mixer reactor 28.
- the second (meth) acrylic ester is also supplied from the stock tank 22 to the second static mixer type reactor 28 with a jacket by the feed pump 23, and the second static mixer type reactor 28 is supplied. Among them, the polymerization reaction is simultaneously performed.
- the polymerization reaction is successively carried out successively in all 15 static mixer reactors (27 to 41). Fine adjustment of the flow rate of each of the second (meth) acrylate esters continuously fed to each static mixer reactor (27 to 41) was provided in front of the feed port of each reactor. Use a flow meter 55 and a flow control valve 54.
- the polymerization reaction solution obtained from the 15th jacketed static mixer reactor 41 is then supplied from a stock tank 16 by a feed pump 17 and continuously supplied from a third (meth) acrylic acid.
- a third (meth) acrylic acid After mixing with the ester in the static mixer 42 for mixing, the mixture is introduced into the lower part of the third reactor, that is, the column reactor 44.
- the polymerization reaction liquid flows from the lower part to the upper part of the tower reactor 44, and the polymerization reaction proceeds during that time to obtain the polymerization reaction liquid from the upper part.
- the polymerization reaction liquid was introduced into a static mixer 47 for stopping the polymerization, and at the same time, the feed tank 46 was fed from the stock tank 45 for the polymerization stopper.
- the polymerization stopper is continuously supplied to the static mixer 47 for stopping the polymerization to stop the polymerization. Thereafter, the whole or a part of the reaction solution is received in the stock tank 48. If the types of the first to third (meth) acrylic esters are changed in the steps so far, a triblock copolymer can be produced.
- the outlets for the polymerization reaction liquid (49, 50) are provided at the outlets of the static mixer-type reactor 41 and the tower-type reactor 44 (after the static mixer 47 for stopping the polymerization in the figure).
- the polymer or copolymer can be continuously taken out by flowing the reaction liquid after stopping the polymerization reaction in the stock tank 48 through a series of steps until the polymer is taken out continuously.
- a tank reactor with a stirrer having a capacity of lm 3 is used as the first reactor in FIG.
- the reactor is connected in series with a jacketed static mixer reactor with an inner diameter of 1 lmm x length of 1620 mm, followed by a jacketed static mixer reactor with an inner diameter of 23 mm x length of 2700 mm that is larger than the reactor. and the total of two groups of tubular reactor, using a third reactor and the polymerization reaction was equipped with a stirrer tank reactor volume lm 3 as stock tank.
- Example 3 and Comparative Example 3 in FIG. 2, a tank reactor with a stirrer having a capacity of lm 3 is used as the first reactor, and a jacket with the jacket in FIG. 3 is used as the second tubular reactor unit.
- Static mixer type reaction tube inner diameter 1 lmm x length 300 mm
- static mixer type reducer with jacket inner diameter 1 lmm to inner diameter 28 mm x length 140 mm
- static mixer type reaction tube with jacket inner diameter 28 mm x length
- a tubular reactor having 15 reactor tubes connected in series (3470 mm) was connected in series, and a column reactor having a capacity of 0.95 m 3 (inner diameter: 400 mm ⁇ length: 7600 mm) was used as the third reactor.
- the temperature of the polymerization reaction solution at the outlet of the reactor 9 was 9 ° C.
- the polymerization reaction solution collected from the extraction port 10 provided at the outlet of the reactor 9 was collected in a container containing a small amount of methanol and the polymerization reaction was stopped, and GC measurement was performed, The conversion rate of n-butyl acrylate was 100%.
- the molar amount of n-butyl acrylate supplied to the first tubular reactor 8 of the second reactor and that contained in the living PMMA solution 1 ([molar amount of organoaluminum compound] [molar amount of polymerization initiator] Amount]) ratio ⁇ [molar amount of n-butyl acrylate] Z ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) ⁇ was 34.
- the residence time of the mixture of living PMMA solution 1 and n-butyl acrylate in the second reactor was 20 seconds.
- the molar amount of n-butyl] Z ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) ⁇ was 34.
- the residence time of the mixed solution of living PMMA solution 1 and n-butyl acrylate in the second reactor was 20 seconds.
- a small amount of the obtained polymerization reaction solution was collected from a sampling port 10 provided at the outlet of the reactor 9 into a container containing a small amount of methanol to stop the polymerization reaction.
- this reaction solution was measured by GC, the n-butyl acrylate conversion rate was 100%.
- Ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the amount of ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) contained in the polymerization reaction solution 1 was 34.
- the residence time of the mixed liquid of polymerization reaction liquid 1 and n-butyl acrylate in the second reactor section was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from a sampling port 10 into a container containing a small amount of methanol to stop the polymerization reaction. This reaction solution was subjected to GC measurement.
- the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the content of ([molar amount of organoaluminum compound]-[molar amount of polymerization initiator]) contained in the polymerization reaction solution 2 is 34. there were.
- the residence time of the mixed liquid of polymerization reaction liquid 2 and n-butyl acrylate in the second reactor part was 20 seconds.
- a small amount of the obtained polymerization reaction solution was collected from a sampling port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the content of ([molar amount of organoaluminum compound] — [molar amount of polymerization initiator]) contained in the polymerization reaction solution 3 is 34. there were.
- the residence time of the mixed liquid of polymerization reaction liquid 3 and n-butyl acrylate in the second reactor part was 20 seconds.
- a small amount of the obtained polymerization reaction solution was collected from a sampling port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the content of ([molar amount of organoaluminum compound] — [molar amount of polymerization initiator]) contained in the polymerization reaction solution 4 is 34. there were. Further, the residence time of the mixed liquid of polymerization reaction liquid 4 and n-butyl acrylate in the second reactor part was 20 seconds. A small amount of the obtained polymerization reaction solution was collected from a sampling port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the content of ([molar amount of organoaluminum compound] — [molar amount of polymerization initiator]) contained in the polymerization reaction solution 5 is 34. there were.
- the residence time of the mixed solution of the polymerization reaction solution 5 and n-butyl acrylate in the second reactor part was 20 seconds.
- a small amount of the obtained polymerization reaction solution was collected from a sampling port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the resulting polymer is poly (methyl methacrylate) -b-poly (n-butyl acrylate) diblock copolymer (PMMA-b-PnBA).
- PMMA-b-PnBA poly (methyl methacrylate) -b-poly (n-butyl acrylate) diblock copolymer
- the polymerization reaction liquid 6 obtained in the stock tank 11 with a stirrer having a capacity of lm 3 was 15 to 13.
- the temperature was kept at C, and 9.1 kg of MMA per 200 kg was added for 5 minutes, and then heated to 25 ° C. for 6 hours for polymerization.
- the polymerization reaction was stopped by adding 1 kg of methanol to the obtained polymerization reaction solution.
- the MMA conversion rate confirmed by GC was 100%.
- the content of n-butyl acrylate in the total feed solution in each tubular reactor (27 to 41) was 1.5 to 1.2% by mass.
- the molar amount of n-butyl acrylate in the solution supplied to each tubular reactor (27 to 41) and the amount contained in living PMMA solution 2 ([molar amount of organoaluminum compound] [mol of polymerization initiator] Amount]) ratio ⁇ [molar amount of n-butyl acrylate] Z ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) ⁇ was 20.
- the residence time of the mixed solution of living PMMA solution 2 and n-butyl acrylate in each tubular reactor was 30 to 25 seconds.
- a polymerization reaction solution was continuously obtained from the outlet of the final (15th) tubular reactor 41, and immediately subjected to the step [3] described later.
- a small amount of the obtained polymerization reaction liquid was immediately collected into a container containing a small amount of methanol from the extraction port 49 provided at the outlet of the final reactor 41 to stop the polymerization reaction.
- the n-butyl acrylate conversion rate was 100%.
- the polymer obtained from the reaction solution was a poly (methyl methacrylate) b poly (n-butyl acrylate) diblock copolymer (PMMA—b—PnBA), and the diblock copolymer was determined by GPC measurement.
- a polymerization reaction solution was continuously obtained in the stock tank 48 from the outlet of the tower reactor 44. A small amount of the resulting polymerization reaction solution was collected from the extraction port 50. When this reaction solution was measured by GC, The MMA conversion rate was 100%.
- Figure 5 shows the GPC curve of the resulting triblock copolymer.
- the ratio of the molar amount of n-butyl acrylate supplied to the reactor 8 and the amount of ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) contained in the living PMMA solution ⁇ Mole amount] Z ([Mole amount of organoaluminum compound] [Mole amount of polymerization initiator]) ⁇ was 34.
- the residence time of the mixed solution of living PMMA solution and n-butyl acrylate in the second reactor was 20 seconds.
- a small amount of the polymerization reaction solution obtained from the extraction port 10 provided at the outlet of the reactor 9 was collected in a container containing a small amount of methanol to stop the polymerization reaction.
- the GC measurement of this reaction solution showed that the n-butyl acrylate conversion was 100%.
- Toluene solution containing 2 liters 7.9 kg was charged at 25 ° C. Next, after adding 1.2 kg of cyclohexane solution containing 3.7 mol of sec butyllithium, add 27 kg of methyl methacrylate (MMA) over 30 minutes.
- Living PMMA solution 3 The conversion rate of methyl methacrylate confirmed by GC was 100%.
- Ratio of molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and ((molar amount of organoaluminum compound) [molar amount of polymerization initiator]) contained in the living PMMA solution 3 ⁇ [acrylic acid n Mole amount of butyl] Z ([Mole amount of organic aluminum compound] [Mole amount of polymerization initiator]) ⁇ was 84.
- the residence time of the mixed solution of living PMMA solution 3 and n-butyl acrylate in the second reactor was 20 seconds.
- a small amount of the obtained polymerization reaction solution was collected from a sampling port 10 provided at the outlet of the reactor 9 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was measured by GC, the n-butyl acrylate conversion was 100 %Met.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the polymerization reaction solution 1, 1 is 84.
- the residence time of the mixed solution of the polymerization reaction solution 1 ′ and the n-butyl acrylate in the second reactor portion was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from the extraction port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the amount contained in the polymerization reaction solution 2 ′ is 84.
- the residence time of the mixed liquid of the polymerization reaction liquid 2 ′ and n-butyl acrylate in the second reactor part was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from the extraction port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution supplied to the reactor 8 and the amount contained in the polymerization reaction solution 3 ′ is 84.
- the residence time of the mixed reaction solution 3 ′ and n-butyl acrylate in the second reactor was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from the extraction port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the ratio of the molar amount of n-butyl acrylate in the solution fed to the reactor 8 to the polymerization reaction solution 4 ((molar amount of organoaluminum compound) — [molar amount of polymerization initiator]) is 84.
- the residence time of the mixed liquid of the polymerization reaction liquid 4 ′ and n-butyl acrylate in the second reactor part was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from the extraction port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the molar amount of n-butyl acrylate in the solution fed to the reactor 8 and contained in the polymerization reaction solution 5 ′ ([mol of organoaluminum compound Amount] — [molar amount of polymerization initiator])) was 84.
- the residence time of the mixed reaction solution 5 ′ and n-butyl acrylate in the second reactor was 20 seconds.
- a small amount of the resulting polymerization reaction solution was collected from the extraction port 10 into a container containing a small amount of methanol to stop the polymerization reaction. When this reaction solution was subjected to GC measurement, the n-butyl acrylate conversion rate was 100%.
- the polymerization reaction liquid 6 ′ obtained in the stock tank 11 with a stirrer having a capacity of lm 3 was 15 to 13.
- the temperature was kept at C, and 9.1 kg of MMA per 200 kg was added for 5 minutes, and then heated to 25 ° C. for 6 hours for polymerization.
- the polymerization reaction was stopped by adding 1 kg of methanol to the obtained polymerization reaction solution.
- the MMA conversion rate confirmed by GC was 100%.
- Example 2 Compared to Example 2, the molecular weight distribution was wide. From the iH-NMR measurement, the PMMA block content in the triblock copolymer was 35% by mass, and the PnBA block content was 65% by mass. In addition, the triblock copolymer content (blocking efficiency) in the polymer obtained by the HPLC method is as low as 67%, and the polymerization terminal deactivation during nBA polymerization by the above 6 repeated operations The amount was 33%, which was large compared to Example 2. The GPC curve of the resulting triblock copolymer is also shown in FIG.
- Reactor 18 with stirrer with a capacity of lm 3 with nitrogen substitution inside 614 kg of toluene, 1, 1, 4, 7, 10, 10 hexamethyltriethylenetetramine 2.20 kg, 'BuAKBHT) 21
- Toluene solution containing 30.9 kg of toluene was charged at 25 ° C.
- methyl methacrylate (MMA) was heated for 30 minutes, and the reaction liquid temperature during that period was Polymerization reaction solution containing poly (methyl methacrylate) (hereinafter referred to as living PMMA4) in a state where the temperature was kept at 20 to 40 ° C. and the polymerization was continued for 10 minutes after completion of the addition of MMA and the polymerization terminal kept living.
- living PMMA solution 4 Polymerization reaction solution containing poly (methyl methacrylate)
- the content of n-butyl attalinoleate in the total feed solution was 3.3 to 2.7% by mass.
- the molar amount of n-butyl acrylate in the solution fed to each tubular reactor and contained in the living PMMA solution 4 [molar amount of organic aluminum compound] [molar amount of polymerization initiator] ]
- the ratio ⁇ [molar amount of n-butyl acrylate] / ([molar amount of organoaluminum compound] [molar amount of polymerization initiator]) ⁇ was 83.
- the residence time of the mixture of living PMMA solution 4 and n-propyl acrylate in each tubular reactor was 33 to 28 seconds.
- a polymerization reaction solution was continuously obtained from the outlet of the final (15th) tubular reactor 41 and immediately subjected to the step [3] described later.
- a small amount of the obtained polymerization reaction solution was immediately collected into a container containing a small amount of methanol from the extraction port 49 provided at the outlet of the final reactor 41 to stop the polymerization reaction.
- this reaction solution was measured by GC, the n-butyl acrylate conversion rate was 100%.
- the polymer obtained from the reaction solution was poly (methyl methacrylate) -b-poly (acrylic acid n-butyl).
- the obtained polymer is a triblock copolymer of PMMA—b—PnBA—b—P MMA.
- the PMMA block content in the triblock copolymer was 32% by mass, and the PnBA block content was 68% by mass.
- the content (blocking efficiency) of the triblock copolymer in the obtained polymer obtained by HPLC method was 47%.
- the GPC curve of the obtained triblock copolymer is also shown in FIG.
- the triblock copolymer having low blocking efficiency obtained in Comparative Example 2 and Comparative Example 3 is inferior in mechanical properties such as tensile strength and compression set, and is preferable when used as a thermoplastic elastomer. Absent.
- the polymerization proceeds at a polymerization temperature milder than that of the conventional method while maintaining high living property at a high polymerization rate, resulting in a narrow molecular weight distribution! (Meth) acrylate
- a polymer or copolymer can be produced with high yield and high productivity.
- the (meth) acrylic acid ester polymer or copolymer having a molecular weight distribution of 1.5 or less obtained by the continuous production method of the present invention is a thermoplastic elastomer, a polymer compatibilizer. It can be suitably used for applications such as an agent, a resin modifier, a reactive polymer, a resin resin, a base polymer for an adhesive, a viscosity index improver, and a pour point depressant.
- FIG. 1 is a schematic diagram of an example of a reaction apparatus. 1: Reactor with stirrer [First polymerization reactor]
- FIG. 2 is a schematic diagram of an example of a reaction apparatus.
- 16 First and third (meth) acrylic acid ester (methyl methacrylate) stock tanks 17, 19, 21, 23, 46: Feed pump 18: Reactor with stirrer [First polymerization reactor] 20 : Solvent (toluene) stock tank 21: Second (meth) acrylic acid ester (n-butyl acrylate) stock tank 24, 49: Mixing static mixer 25, 26: Cooling heat exchange ⁇ 27-41 : Jacketed static mixer reactor [second polymerization reactor] 43: Heat exchanger for heating 4 4: Tower reactor [third polymerization reactor] 45: Stock stopper (methanol) stock tank 47 : Static mixer for stopping polymerization 48: Stock tank with stirrer 49, 50: Extraction PI
- FIG. 3 is a detailed view of a jacketed static mixer reactor shown by 27 to 41 in FIG. 51, 53: Static mixer type reaction tube with jacket 52: Static mixer type reducer with jacket 54: Flow control valve 55: Flow meter
- FIG. 4 is a GPC curve diagram of the triblock copolymer (PMMA—b—PnBA—b—PMMA) obtained in Example 2 and Comparative Example 2.
- FIG. 5 is a GPC curve diagram of the triblock copolymer (PMMA—b—PnBA —b—PMMA) obtained in Example 3 and Comparative Example 3.
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US11/659,964 US7973117B2 (en) | 2004-08-13 | 2005-08-11 | Process for continuously producing (meth)acrylic ester polymer or copolymer |
EP05770786A EP1780222B1 (en) | 2004-08-13 | 2005-08-11 | Process for continuously producing (meth)acrylic ester polymer or copolymer |
DE602005011303T DE602005011303D1 (de) | 2004-08-13 | 2005-08-11 | Verfahren zur kontinuierlichen herstellung von (meth)acrylsäureesterpolymer oder copolymer |
JP2006531715A JP4884968B2 (ja) | 2004-08-13 | 2005-08-11 | (メタ)アクリル酸エステル重合体または共重合体の連続的製造方法 |
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JP2012207155A (ja) * | 2011-03-30 | 2012-10-25 | Kuraray Co Ltd | アクリル系ジブロック共重合体ペレット及びそれを含有する粘着剤組成物 |
WO2013146253A1 (ja) * | 2012-03-27 | 2013-10-03 | 株式会社クラレ | ビニル系重合体の製造方法 |
WO2015093611A1 (ja) * | 2013-12-20 | 2015-06-25 | 株式会社堀場エステック | 連続反応装置及びこれを用いる連続重合方法 |
JP2015127425A (ja) * | 2007-08-21 | 2015-07-09 | 国立大学法人京都大学 | Mw/Mnが1.25以下であるポリマーの製造方法 |
JPWO2016103714A1 (ja) * | 2014-12-26 | 2017-10-05 | 株式会社クラレ | 加飾用複層シートおよび立体成型体 |
WO2019031435A1 (ja) * | 2017-08-08 | 2019-02-14 | 日産化学株式会社 | ブロックポリマーの製造方法 |
JP2019519656A (ja) * | 2016-07-06 | 2019-07-11 | イネオス ユーロープ アクチェンゲゼルシャフト | 重合プロセス及び重合設備 |
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WO2017135398A1 (ja) | 2016-02-04 | 2017-08-10 | 日産化学工業株式会社 | ポリマーの製造方法 |
JP6254239B2 (ja) | 2016-02-29 | 2017-12-27 | 大日精化工業株式会社 | ポリマーの製造方法 |
JP6245719B1 (ja) * | 2017-03-24 | 2017-12-13 | 大日精化工業株式会社 | ポリマーの製造方法 |
WO2018225685A1 (ja) * | 2017-06-06 | 2018-12-13 | 日産化学株式会社 | ブロックポリマーの製造方法 |
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