WO1999065970A1 - Systeme et procede de production de polymeres de polycondensation - Google Patents
Systeme et procede de production de polymeres de polycondensation Download PDFInfo
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- WO1999065970A1 WO1999065970A1 PCT/JP1999/003207 JP9903207W WO9965970A1 WO 1999065970 A1 WO1999065970 A1 WO 1999065970A1 JP 9903207 W JP9903207 W JP 9903207W WO 9965970 A1 WO9965970 A1 WO 9965970A1
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- inert gas
- polymerization
- prepolymer
- polycondensation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/04—Preparatory processes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/785—Preparation processes characterised by the apparatus used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/20—General preparatory processes
- C08G64/205—General preparatory processes characterised by the apparatus used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/28—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G85/00—General processes for preparing compounds provided for in this subclass
Definitions
- the present invention relates to a system for producing a polycondensation polymer. More specifically, the present invention relates to (A) an inert gas absorbing device for obtaining an inert gas-absorbed molten prepolymer ( ⁇ ) by causing a molten polycondensation prepolymer to absorb an inert gas; ⁇ ) a polymerization device for polymerizing the inert gas-absorbing molten prepolymer ( ⁇ ) under reduced pressure; and (C) a transfer device from the inert gas absorption device ( ⁇ ) to the polymerization device ( ⁇ ).
- a polycondensation polymer which comprises a pipe, wherein the inert gas absorbing device (A) and the polymerization device (B) are arranged and connected in this order via the pipe (C).
- the present invention also provides a method for treating a molten polycondensation prepolymer with an inert gas in an inert gas absorption zone to obtain an inert gas absorption molten prepolymer (h), Transferring the prepolymer ( ⁇ ) to a polymerization reaction zone, and polymerizing the inert gas-absorbing molten prepolymer ( ⁇ ) under a specific reduced pressure in the polymerization reaction zone. And a method for producing the same.
- a high-quality polycondensation polymer without coloration can be used at a high polymerization rate without using a large amount of inert gas. Can be manufactured.
- Conventional technology Conventional technology
- Known methods for producing polycondensed polymers such as polyesters, polyamides, and polycarbonates include a method using a solvent such as an interfacial polycondensation method and a melting method using no solvent.
- a solvent such as an interfacial polycondensation method and a melting method using no solvent.
- the method using a solvent requires a great deal of effort to remove the solvent from the polymer, and has a problem that a small amount of the solvent remaining in the polymer adversely affects the physical properties of the polymer. are doing.
- the polycondensation reaction by this method is an equilibrium reaction.Therefore, by-products produced by the polycondensation reaction are usually taken out of the polymerization reaction system and the equilibrium is shifted to the production system side. It is known that polycondensation polymers can be produced. For example, in the production of poly (ethylene terephthalate), water and ethylene dalicol are extracted. In the production of hexamethylene adipamide (6,6 nylon), how efficiently water is extracted is determined by the melting method. It is an important technical point when producing polycondensation polymers.
- Japanese Patent Publication No. 46-34083 discloses a horizontal stirring tank with a rotating shaft. It is shown.
- the surface of the polymer is renewed by rotary stirring using a horizontal stirring tank equipped with the above-mentioned rotating shaft so that by-products generated in the polycondensation reaction can be easily extracted out of the polymerization reaction system. I'm sorry.
- polymerization is generally carried out under a high vacuum in order to take out the by-products generated by the polycondensation reaction out of the system, but as in the case of the horizontal stirring tank described above.
- a device provided with a rotary stirring shaft in the main body of the polymerization vessel has a disadvantage that air leaks easily from the seal portion between the main body of the polymerization vessel and the rotary stirring shaft. It is also unfavorable in terms of deteriorating the quality of the product.
- Japanese Patent Publication No. 48-83555 discloses that a porous body which extends substantially vertically and has a porosity that increases from the upper part to the lower part is included inside.
- a device is disclosed which includes a device for removing the mer.
- 53-17569 / 1989 discloses that a number of linear guides vertically arranged in a hollow body, and a high-viscosity pre-bolimer is provided on top of each linear guide.
- a device for supplying a nozzle and a mechanism for taking out a polymer below each linear guide are disclosed.
- Japanese Patent Publication No. 414,127 discloses that an initial condensate having an intrinsic viscosity of 0.1 or more is extruded from a slit-shaped base into a heated reactor, and the slurry is extruded.
- a continuous weight characterized in that the condensed product is held in a thin film state between at least two wires, which are separately dropped from a socket-shaped base, and are continuously moved downward.
- a condensation method is disclosed.
- the devices disclosed in these publications are designed to increase the surface area of the prepolymer when dropped, thereby facilitating extraction of by-products generated by the polycondensation reaction out of the polymerization reaction system.
- the surface renewability is not always good, and the polymerization rate is not sufficient.
- Japanese Patent Application Laid-Open No. 63-104601 discloses a method in which a belt (conveying member) of a belt conveyor provided inside the apparatus body is moved at a predetermined speed while the upper side of the conveying member is moved. It discloses a method and an apparatus for supplying a liquid to be treated to an end opposite to the direction of travel of the surface to form a thin film and moving the liquid to the other end to evaporate and remove volatiles from the liquid to be treated. .
- the present inventors have disclosed in Japanese Patent Application Laid-Open No. 8-3253733 that when prepolymer is polymerized while being dropped along a guide while flowing an inert gas, the prepolymer is dropped into the inert gas.
- the range of the partial pressure ratio of the aromatic monohydroxy compound to inert gas was specified, and a method was proposed in which the inert gas recovery equipment does not become excessive.
- this method it is difficult to sufficiently increase the polymerization rate.
- Conventional methods for producing polycondensation polymers by efficiently extracting the by-products generated by the polycondensation reaction using an inert gas as described above have conventionally been conducted by continuously supplying the inert gas in the polymerization vessel.
- the system uses a polymerization device that supplies water and reduces the partial pressure of by-products in the polymerization reactor to promote polymerization.A large amount of inert gas is used to effectively increase the polymerization rate I needed to do it.
- the present inventors have conducted intensive studies in producing a polycondensation polymer in order to solve the above-mentioned various problems associated with the conventional method of using an inert gas for a melt polymerization method.
- the molten polycondensation prepolymer is made to absorb the inert gas, whereby the inert gas absorption molten prepolymer is produced.
- an inert gas absorbing device for obtaining ( ⁇ ) (ii) a polymerization device for polymerizing the inert gas absorbing molten prepolymer (a) under reduced pressure, and (C) the inert gas absorbing device.
- a pipe for transferring from the apparatus (A) to the polymerization apparatus (B) is included.
- the inert gas absorption apparatus (A) and the polymerization apparatus (B) are connected to the polymerization apparatus (B) via the pipe (C).
- one object of the present invention is to produce a polycondensation polymer by a problem-free melting method of separating a solvent and a product without using a large amount of inert gas and at a high polymerization rate.
- An object of the present invention is to provide an industrially extremely advantageous apparatus capable of producing a high-quality polycondensation polymer without coloring.
- Another object of the present invention is to provide an industrial system capable of producing a high-quality, non-colored polycondensation polymer at a high polymerization rate without using a large amount of inert gas, using the above-described apparatus. It is to provide a method that is advantageous to
- FIG. 1 (a) is a schematic diagram showing an example of the system of the present invention
- Figure 1 (b) is a schematic cross-sectional view of the system of Figure 1 (a), taken along line I (b) -I (b);
- Figure 1 (c) is a schematic cross-sectional view along the line I (c)-I (c) of Figure 1 (a);
- FIG. 2 is a schematic diagram showing another example of the system of the present invention. Explanation of reference numerals
- (C) piping for transferring the inert gas-absorbing molten prepolymer ( ⁇ ) from the inert gas absorbing device ( ⁇ ) to the polymerization device ( ⁇ ), wherein the inert gas passing therethrough is Piping having adjusting means for adjusting the flow rate of the absorption molten prepolymer ( ⁇ )
- the inert gas absorbing device (A) and the polymerization device (B) are used for producing a polycondensation polymer which is arranged and connected in this order via the pipe (C).
- the absorption device (A) is provided with a molten polycondensation pre-polymer supply port, an inert gas supply port, and an inert gas for absorbing the inert gas into the molten polycondensation pre-polymer to obtain an inert gas absorption molten pre-polymer ( ⁇ ).
- ⁇ ) is withdrawn from the absorption device (A) through a discharge port, and transferred to the polymerization device (B) through the pipe (C).
- the polymerization apparatus (B) includes an inert gas absorbing molten prepolymer ( ⁇ ) supply port, an inert gas absorbing molten prepolymer ( ⁇ ) supply port communicating with the inert gas absorbing molten prepolymer ( ⁇ ) supply port, Polymerization apparatus casing having a polymerization reaction zone located next to the reactive gas absorbing molten prepolymer supply zone, and a vacuum apparatus provided in association with the polymerization reaction zone
- the polymerization apparatus casing has a polycondensation polymer discharge port provided through a polycondensation polymer discharge apparatus located next to the polymerization reaction zone,
- the inert gas absorbing molten prepolymer ( ⁇ ) is supplied to the supply port. From the inert gas-absorbing molten polymer supply zone to enter the polymerization reaction zone depressurized by the vacuum device, and then polymerize to obtain a polycondensation polymer. It is configured to be extracted from the polymerization apparatus (B) through the discharge port by the apparatus.
- a system for producing a polycondensation polymer characterized by the above is provided.
- the inert gas absorbing device ( ⁇ ) and the polymerization device ( ⁇ ) are arranged and connected in this order via the pipe (C) to produce a polycondensation polymer.
- the absorption device ( ⁇ ) is provided with a melt polycondensation pre-polymerizer supply port, An active gas supply port, an inert gas absorption zone for absorbing the inert gas into the molten polycondensation prepolymer to obtain an inert gas absorption molten prevolumemer ( ⁇ ), and an inert gas absorption molten prepolymer ( ⁇ ) exhaust
- An absorber casing having an outlet, wherein the inert gas-absorbing molten prepolymer (h) is withdrawn from the absorber ( ⁇ ) through the inert gas-absorbing molten prepolymer ( ⁇ ) outlet; It is configured to be transferred to the polymerization apparatus ( ⁇ ) via the pipe (C),
- the polymerization apparatus ( ⁇ ) includes an inert gas absorption molten prepolymer ( ⁇ ) supply port, an inert gas absorption molten prepolymer ( ⁇ ) supply port communicating with the inert gas absorption molten prepolymer ( ⁇ ) supply port, and the inert gas absorption molten prepolymer ( ⁇ ) supply port.
- a polymerization apparatus casing having a polymerization reaction zone located next to the active gas absorption molten prepolymer supply zone, and a vacuum apparatus provided in connection with the polymerization reaction zone
- the polymerization apparatus casing has a polycondensation polymer discharge port provided through a polycondensation polymer discharge apparatus located next to the polymerization reaction zone,
- the inert gas-absorbing molten prepolymer ( ⁇ ) passes through the supply port through the inert gas-absorbing molten polymer supply zone, enters the polymerization reaction zone depressurized by the vacuum device, and then polymerizes. A condensed polymer is obtained, and the obtained polycondensed polymer is passed through the discharge port by the discharge device to the polymerization device ( ⁇ ). ⁇ It is configured to be extracted from
- a system for producing a polycondensation polymer characterized in that:
- the polymerization reaction zone of the polymerization apparatus (B) is a guide contact drop polymerization reaction zone having at least one guide fixed therein and extending downward;
- the reaction zone is separated from the inert gas-absorbing molten prepolymer feed zone by an inert gas-absorbing molten prepolymer having at least one hole, and the inert gas is passed through the hole of the distribution plate.
- a gas absorption molten pre-polymerization supply zone communicates with the guide contact drop polymerization reaction zone, and the guide is provided corresponding to the hole of the distribution plate.
- the inert gas absorbing molten prepolymer ( ⁇ ) is configured to fall and polymerize while contacting the guide.
- the polycondensation polymer is an aliphatic polyester, an aliphatic polyamide, an aliphatic polycarbonate, an aliphatic aromatic polyester, an aliphatic aromatic polyamide, an aromatic polyester, or an aromatic polyester. 7. The system according to any one of items 1 to 6, wherein the system is selected from the group consisting of amides.
- an inert gas can be directly supplied into the polymerization equipment. Instead, it was found that polycondensation polymers can be produced at extremely high polymerization rates simply by supplying a small amount of inert gas to the inert gas absorber.
- the power for increasing the polymerization rate by continuously supplying and flowing the inert gas into the polymerization vessel could not sufficiently increase the polymerization rate.
- the reason why the polymerization rate is increased, although insufficient, is that the polycondensation reaction is an equilibrium reaction, and that by-products generated in the polycondensation reaction are removed accompanying the inert gas. Therefore, it is understood that the partial pressure of the by-product decreases, the equilibrium shifts to the production system side, and polycondensation proceeds advantageously.
- the supply amount of the inert gas must be increased in order to increase the polymerization rate, and therefore, there are various unavoidable problems associated with the use of a large amount of the inert gas.
- the amount of inert gas absorbed into the molten polycondensation prepolymer by the inert gas absorption device is extremely small.
- the effect of increasing the polymerization rate due to the partial pressure lowering effect can hardly be expected, and the role of inert gas cannot be explained from the role of inert gas in the prior art.
- our research According to a surprising result, when the molten polycondensation prepolymer obtained by absorbing the inert gas with the inert gas absorbing device is polymerized, the continuous generation of the inert gas absorbing molten prepolymer in the polymerization device is performed.
- the term “polycondensation polymer” means a polymer having a structure in which at least one kind of monomer having two or more condensable functional groups is bonded via a bond between the functional groups.
- the above monomer may be one in which the functional group is directly bonded to an aliphatic hydrocarbon group, or one in which the functional group is directly bonded to an aromatic hydrocarbon group.
- Specific examples of the polycondensation polymer include a structure in which an aliphatic hydrocarbon group such as an aliphatic polyester, an aliphatic polyamide, or an aliphatic polycarbonate is bonded through a bond of the functional group.
- aliphatic hydrocarbon groups such as polymers having aliphatic hydrocarbons, aliphatic aromatic polyesters, aliphatic aromatic polyamides, and aliphatic aromatic polycarbonates, and the like.
- the polymer include a polymer having a bonded structure, and a polymer having a structure in which an aromatic hydrocarbon group such as an aromatic polyester and an aromatic polyamide is bonded through a bond of the functional group.
- the above-mentioned polycondensation polymer may be a homopolymer or a copolymer.
- a copolymer in which different bonds such as an ester bond, a carbonate bond, an amide bond, etc. exist in a random or block shape may be used. Specific examples of such copolymers include polyester carbonate and polyester amide.
- the melt polycondensation prepolymer means a melt in the course of polymerization having a lower degree of polymerization than the polycondensation polymer having a desired degree of polymerization, and may be an oligomer.
- the above-mentioned melt polycondensation prepolymer can be produced by a known method.
- a polyester prepolymer is produced by polycondensation of a compound having a hydroxyl group and a compound having a carboxyl group, and a prepolymer of a polyamide is formed of a compound having an amino group and a compound having a carboxyl group.
- Polycarbonate prepolymers are produced by polycondensation of a compound having an aryloxy or alkoxy group on both sides of a carbonyl group and a compound having a hydroxyl group. You.
- a prepolymer of an aliphatic polyester is composed of a monomer obtained by directly bonding a hydroxyl group to an aliphatic hydrocarbon group having 2 to 30 carbon atoms, such as ethylene glycol, and adipic acid.
- a monomer having a carboxyl group directly bonded to an aliphatic hydrocarbon group having 2 to 30 carbon atoms and a prepolymer of an aliphatic aromatic polyester is a carbon atom such as ethylene glycol.
- a monomer in which a hydroxy group is directly bonded to an aliphatic hydrocarbon group of Formulas 2 to 30 It is produced by polycondensation with a monomer in which a carboxyl group is directly bonded to an aromatic hydrocarbon group having 6 to 30 carbon atoms such as itodoguchi phthalic acid, and the prepolymer of aromatic polyester is bisphenol.
- a prepolymer of an aliphatic polyamide is a monomer having a carboxyl group directly bonded to an aliphatic hydrocarbon group having 2 to 30 carbon atoms, such as adipic acid, and a charcoal, such as hexamethylene diamine.
- a carboxyl group is directly bonded to an aromatic hydrocarbon group of 6 to 30 and an amino group is directly bonded to an aliphatic hydrocarbon group of 2 to 30 carbon atoms such as hexamethylene diamine.
- a prepolymer of aromatic polyamide which is produced by polycondensation with a monomer prepared by the method described above, is a monomer in which a carboxyl group is directly bonded to an aromatic hydrocarbon group having 6 to 30 carbon atoms, such as terephthalic acid.
- Parahue Nire It is produced by polycondensation with a monomer in which an amino group is directly bonded to an aromatic hydrocarbon group having 6 to 30 carbon atoms such as diamine.
- aliphatic polycarbonates are useful for aliphatic hydrocarbon groups having 2 to 30 carbon atoms such as 1,6-hexanediol.
- Aliphatic aromatic polycarbonate produced by polycondensation of a monomer having a hydroxyl group directly bonded to a monomer having a hydroxyl group bonded to both sides of a carbonyl group such as diphenyl carbonate.
- One is a monomer in which a hydroxy group is directly bonded to an aliphatic hydrocarbon group having 2 to 30 carbon atoms such as 1,6-hexanediol, and 6 to 30 carbon atoms such as bisphenol A.
- molten mixture obtained by simply heating and melting the mixture of the above-mentioned raw material monomers can be used as a molten polycondensation polymer.
- the terminal functional groups that undergo a polycondensation reaction may be the same or different.
- the hydroxyl end and The reaction may be a reaction in which water is produced as a by-product at the end of the boxyl, or a reaction in which ethylene glycol is produced as a by-product by reacting the ends of the hydroxyls.
- the melt viscosity of the melt polycondensation prepolymer is preferably not less than 0.01 Pas, more preferably not less than 0.01 Pas, and also preferably not more than 5, PaPas. , 2, OOOP a 's or less are more preferable.
- the melt viscosity means a melt viscosity at a shear rate of 1 under polymerization temperature conditions.
- a melt polycondensation prepolymer with a melt viscosity of less than 0.001 Pa ⁇ s is a type of polymerization equipment that drops along the guide in the polymerization reaction zone and polymerizes. When used, the fall time is shortened, and it may be difficult to sufficiently increase the degree of polymerization.
- the inert gas is a general term for a gas that does not cause a chemical reaction with the molten polycondensation prepolymer and is stable under inert gas absorption conditions and polymerization conditions.
- Specific examples of the inert gas include nitrogen, argon, helium, carbon dioxide, and organic compounds that are gaseous at a temperature at which the prepolymer is maintained in a molten state, such as a lower hydrocarbon gas having 1 to 8 carbon atoms. No. Especially preferred What is new is nitrogen.
- the type of the inert gas absorption device (A) is not particularly limited as long as it is a device capable of absorbing the inert gas into the molten polycondensation prepolymer, and is, for example, a chemical device design and operation series No. .2, Revised gas absorption 49-54 (March 15, 1981, published by Idani Gakugyo Kogyo Co., Ltd.) Packed tower type absorber, shelf type absorber, spray tower type absorber , A fluidized packed column type absorber, a liquid film cross-flow contact type absorber, a high-speed swirling flow type absorber, a mechanical absorption type known absorber, and the melt polycondensation preform under an inert gas atmosphere.
- a device that absorbs the reamer while dropping it along the guide may be used.
- a spray tower type absorption apparatus or an apparatus that absorbs the molten polycondensation prepolymer by dropping it along a guide in an inert gas atmosphere may be used.
- the inert gas absorbing device (A) in the present invention may be of the same type as the device usually used as a polymerization vessel, but usually absorbs a small amount of inert gas at a pressure higher than the polymerization pressure. Therefore, polymerization in the inert gas absorption device hardly progresses
- the material of the inert gas absorber is usually stainless steel, carbon steel, stainless steel, nickel, It is selected from metals such as titanium, chromium, and other alloys, and polymer materials with high heat resistance.
- the polymerization apparatus (B) is not particularly limited, and examples thereof include a stirred tank reactor, a thin film reactor, a centrifugal thin film evaporation reactor, a surface renewal type twin-screw kneading reactor, a twin-screw horizontal stirring reactor, and a wet wall type.
- the raw material monomers are polymerized in a vertical stirring tank to produce a melt polycondensation prepolymer, and in the polymerization process, a surface-renewal twin-screw kneading reactor, twin-screw horizontal stirring reactor, prepolymer Using a wet-wall reactor in which the polymer is dropped and polymerized along the inner wall, a perforated plate reactor in which the polymer is polymerized while falling freely, and a polymerizer in which the polymer is melted and dropped along the guide to progress the polymerization.
- the method of polymerizing by polymerization is one of the preferable embodiments of the present invention.
- a particularly preferred polymerization vessel used in the polymerization step is a polymerization vessel in which the prepolymer is melted and dropped along a guide to proceed with the polymerization (see, for example, US Pat. No. 5,589,564). is there. That is, the polymerization reaction zone of the polymerization apparatus (B) is a guide contact drop polymerization reaction zone having at least one guide fixed therein and extending downward; Anti The reaction zone is separated from the inert gas-absorbing molten prepolymer supply zone by an inert gas-absorbing molten prepolymer having at least one hole, and the inert gas is passed through the holes of the distribution plate.
- An absorption / melting pre-polymer supply zone communicates with the guide contact / fall polymerization reaction zone, and the guide is provided corresponding to the hole of the distribution plate. It is preferable that the mer ( ⁇ ) is configured to fall and polymerize while contacting the guide. In a polymerization reactor where the prepolymer is melted and dropped along the guide to proceed with polymerization, the prepolymer ( ⁇ ) is always in a vigorous foaming state when the above inert gas absorbing molten prepolymer ( ⁇ ) is polymerized. Thus, it became clear that the phenomenon that the stirring state of the surface was extremely improved was particularly prominent.
- a polymerization apparatus that causes the inert gas-absorbing molten prepolymer ( ⁇ ) to constantly melt and flow down in a foamed state along the guide to progress the polymerization.
- “to be constantly melted down in a foaming state” means a state in which foaming is continued from the upper part to the lower part of the guide. The foaming state can be visually observed by, for example, providing a site glass in a polymerization vessel.
- the inert gas absorbing device will be specifically described with reference to FIG.
- the inert gas absorber 1 in Fig. 1 (a) This is a type of device that absorbs inert gas while dropping the molten polycondensation prepolymer from the upper part of the absorber to the lower part.
- the inert gas absorption device 1 has a melt polycondensation prepolymer feed port 2, a melt polycondensation prepolymer feed zone 3, a melt polycondensation prepolymer distribution plate 4, an inert gas absorption zone 5, and an inert gas feed port 6. It consists of an absorber casing 1a.
- the molten polycondensation prepolymer 15 is supplied from the supply port 2 to the supply zone 3 of the molten polycondensation prepolymer, and is introduced into the inert gas absorption zone 5 through the distribution plate 4 to form droplets or filaments. Absorbs inert gas while falling.
- An inert gas supply port 6 is provided in the inert gas absorption zone 5, and an inert gas is supplied while controlling the pressure of the inert gas absorption device with a pressure control valve 7 at a constant level. Can be supplied.
- the amount of inert gas absorbed by the molten polycondensation prepolymer in the inert gas absorption device 1 can be adjusted by changing the pressure in the inert gas absorption zone. The higher the pressure, the greater the absorption amount.
- the molten prepolymer ( ⁇ ) that has absorbed the inert gas is discharged from the outlet 23a.
- the amount of the inert gas absorbed by the molten polycondensation prepolymer is not particularly limited, but is usually 1% by weight with respect to the molten polycondensation prepolymer. 11-10, 001), preferably 3-8, 000 ppm, more preferably 5-6, 000 ppm.
- the inert gas absorbed by the polycondensation prepolymer is It is particularly preferred that the amount is sufficient for the inert gas-absorbing molten prepolymer ( ⁇ ) to foam during polymerization and renew the surface.
- the amount of the inert gas varies depending on the type of the polycondensation polymer to be produced.
- the pressure in the inert gas absorption zone is set to 5,000 to 3,000,000 Pa, and so on. More preferably, it should be 10 0, 00 0 to 2, 0 0 0, 0 0 P a, more preferably, 20 0, 0 0 0 to 1, 5 0 0, 0 0 0 P a Can be achieved. It is desirable that the inert gas absorbing device 1 has a pressure resistance specification in the above pressure range. In addition, the temperature at which the inert gas is absorbed in the inert gas absorption device 1 is often close to the polymerization temperature, and is usually in the range of 100 to 350 ° C. The inert gas absorbing device 1 can be heated by the jackets 24 and 25.
- a guide such as a wire or wire mesh is provided in the inert gas absorption zone 5, and the molten polycondensation prepolymer is caused to flow down along the guide.
- Devices that absorb inert gas are also preferred.
- the inert gas-absorbing molten prepolymer ( ⁇ ) is polymerized to a predetermined polymerization degree.
- the polymerization reactor 11 in FIG. 1 (a) is composed of a polymerization equipment casing 11a having an inert gas absorption molten prepolymer ( ⁇ ) supply zone 12 and a polymerization reaction zone 16 located below. ing.
- the molten polymer supply zone 12 and the polymerization reaction zone 16 are separated by an inert gas absorbing molten prepolymer ( ⁇ ) distribution plate 13.
- the polymerization reaction zone 16 has guides 14 for polymerizing while dropping the molten prepolymer from the top to the bottom of the polymerization reaction zone 16, the distribution plate 13 and the inner wall of the polymerization device 11.
- the polymerization reaction zone 16 is a guide contact drop polymerization reaction zone.
- the polymerization reaction zone 16 is provided with a vacuum device 18 for performing polymerization under reduced pressure, and a discharge device 22 for extracting the polymerized polymer 21 from the polymerization reaction zone 16 under reduced pressure.
- the molten pre-polymer supply zone 12 has a function of uniformly supplying the inert gas-absorbing molten pre-polymer ( ⁇ ) 15 a to each hole of the distribution plate 13. If it is not possible to supply the molten gas to the holes of the distribution plate 13 uniformly, the molecular weight of the resulting polycondensation polymer will be non-uniform and the polycondensation polymer will not be uniform. It is not desirable due to the mechanical properties of the marker.
- the volume (m 3 ) of the inert gas absorbing molten pre-polymer ( ⁇ ) supply zone 12 is determined by the inert gas absorbing molten pre-polymer ( ⁇ ) passing through the inert gas absorbing molten pre-polymer ( ⁇ ) supply zone 12.
- the flow rate of 15a is F (m 3 / hr)
- it is usually 0.01 x F to 10 x F (m 3 ), preferably 0.03 XF to 5 XF (m 3 ), And more preferably 0.005 XF to 2 XF, (m 3 ).
- the capacity of the gas absorption molten pre-polymer ( ⁇ ) supply zone 12 is smaller than 0.001 XF (m 2 ), the inert gas absorption molten pre-polymer ( ⁇ ) 1 It may be difficult to supply 5a evenly. In addition, when it exceeds 10 XF (m 3 ), side reactions such as a branching reaction and a gelling reaction are likely to occur, and quality problems such as deterioration of the color tone of the polycondensation polymer may occur. .
- the pressure of the inert gas-absorbing molten pre-polymer ( ⁇ ;) supply zone 12 is usually 100,000 to 5,500,000 Pa, preferably 30,000. It is in the range of 0 to 3, 000, 000 Pa.
- the material of the portion corresponding to the supply zone 12 of the polymerization apparatus 11 is not particularly limited, and is generally made of stainless steel, carbon steel, octatelloy, nickel, titanium, chrome, and other alloys. It is selected from metals and polymer materials with high heat resistance.
- the distribution plate 13 is usually selected from a flat plate, a corrugated plate, a plate having a thick central portion, and the like.
- the shape of the distribution plate is generally selected from shapes such as a circle, an ellipse, a triangle, and a polygon. To be elected.
- the thickness of the distribution plate is usually in the range from 0.1 to 300 mm, preferably in the range from 1 to 200 mm, more preferably in the range from 5 to 150 mm.
- the distribution plate is located in the inert gas-absorbing molten pre-polymer () supply zone.
- the polymerization reaction zone guide In addition to withstanding the pressure, if the polymerization reaction zone guide is fixed to the distribution plate, it must be strong enough to support the weight of the guide and the falling inert gas absorbing molten prepolymer ( ⁇ ). It is also preferable that the reinforcing member is reinforced by a rib or the like.
- the shape of the opening of the hole in the distribution plate is usually selected from shapes such as a circle, an oval, a triangle, a slit, a polygon, and a star.
- the cross-sectional area of the pores is usually between 0.01 and 100 cm 2 , preferably between 0.05 and 10 cm 2 , particularly preferably between 0.1 and 5 cm ⁇ Range.
- the distance between the holes which is the distance between the centers of the holes, usually ranges from 1 to 5001111, and preferably ranges from 25 to 100 mm.
- the hole of the distribution plate may be a hole penetrating the distribution plate or a case where a pipe is attached to the distribution plate. Further, the hole may have a tapered shape in which the hole diameter decreases downward or upward.
- the pressure loss when the inert gas-absorbing molten prepolymer ( ⁇ ) passes through the distribution plate is usually 10, 00 ⁇ 5, 0 0, 0 OOP a, preferably 30, 0 0 It is preferable to determine the size and shape of the holes so that they are 0 to 3, 000, and 000 Pa.
- the material of the distribution plate is usually selected from metal materials such as stainless steel, carbon steel, hastelloy, nickel, titanium, chromium, and other alloys.
- guides 14 for performing polymerization while flowing an inert gas absorbing molten prepolymer 15 g from the upper part to the lower part of the polymerization reaction zone 16 are provided with a distribution plate 1. It is fixed to one or both of 3 and the polymerization reaction zone 16.
- the guide 14 is preferably a material having a very large ratio of the length of the horizontal section to the average length of the outer circumference of the section in the horizontal direction. The ratio is usually in the range from 100 to 1, 000, 0000, preferably in the range from 50 to 100, 000. Specific examples include a wire, a chain, and a flat plate.
- a perforated planar guide having a plurality of through holes extending substantially in the thickness direction and having openings formed on both sides.
- the perforated surface guide include a wire mesh and a punched plate.
- the horizontal cross-section of the guide is usually circular, elliptical, triangular, square, polygonal, star-shaped, etc.
- the shape of the cross section may be the same or different in the longitudinal direction.
- the guide may be hollow.
- the guide may be a single wire such as a wire, or a plurality of guides may be combined by a method such as twisting.
- the surface of the guide may be smooth or uneven, or may partially have protrusions or the like.
- the polymerization reaction zone may be provided with a single guide, and more preferably a plurality of guides.
- the number of guides provided in the polymerization reaction zone is usually from 1 to 100,000, preferably from 3 to 50,000. When there are a plurality of guides, it is also preferable to use appropriate spacers or the like to prevent the guides from touching each other.
- Guides 14 shown in FIGS. 1 (a) to 1 (c) are four wire meshes.
- the guide 14 may be in contact with the hole of the distribution plate 13 or may be apart from the hole. As a preferred specific example, each guide 14 penetrates near the center of each hole of the distribution plate 13, and the guide 14 contacts the outer peripheral portion of each hole of the distribution plate 13.
- the upper part of the guide is located at a position 1 to 100 mm below the hole of the distribution plate.
- the lower end of the guide may or may not be in contact with the liquid surface of the polymerization reaction zone bottom.
- guide 14 is not in contact with the liquid level of the polymerization reaction zone bottom.
- Guide 14 is fixed to one or both of distribution plate 13 and the inner wall of the polymerization equipment.
- Fig. 1 (c) guide 14 is fixed to distribution plate 13 by fixing bracket 17. Have been.
- the polymerization reaction zone 16 is provided with a vacuum device 18 for performing polymerization under reduced pressure.
- the vacuum device 18 includes a pressure control valve 19 and a vacuum pump 20.
- a vacuum pump 20 There is no particular limitation on the type of vacuum pump, and for example, various known wet vacuums such as a liquid ring pump, an oil rotary pump, a jet pump, a steam ejector, an oil ejector, an oil diffusion ejector, and an oil diffusion pump. Pumps, mechanical boosters, reciprocating pumps, dry vacuum pumps such as gas jet pumps, and the like. It is also preferable to use a combination of two or more of these vacuum pumps. In order to condense by-products generated in the polycondensation reaction, It is also preferable that a rubber or the like is provided between the vacuum pump and the polymerization reaction zone.
- the polymerization reaction zone 16 Since the pressure in the polymerization reaction zone 16 is reduced, the polymerization reaction zone 16 needs to be provided with a discharge device such as a discharge bomb 22 to discharge the polymerized condensation polymer 21. There are no particular restrictions on the type of discharge device, but usually a screw-type discharge device or a gear pump is preferred.
- the obtained polycondensation polymer is extracted from the polymerization apparatus 11 via the outlet 23.
- the material of the portion corresponding to the polymerization reaction zone 16 of the polymerization apparatus 11 is not particularly limited, but is usually made of stainless steel, carbon steel, hastelloy, nickel, titanium, chrome, and others. Metallic materials such as alloys are preferred.
- the polymerization reaction zone 16 is preferably operated in a pressure range of 30 to 4.0 Pa, and is desirably a vacuum specification that does not cause air leakage in the pressure range. If the polymerization pressure is higher than 4,000 Pa, the polymerization rate tends to decrease. Even below 30 Pa, the polymerization rate is surprisingly reduced. In other words, when a polycondensation reaction is carried out by a conventional method, lowering the pressure is advantageous in terms of the polymerization rate in order to extract by-products generated in the reaction to the outside of the polymerization system. On the contrary, the fact that the polymerization rate is reduced is a peculiar phenomenon that has not been known at all, and was completely unexpected.
- the polymerization pressure is less than 30 Pa If it is full, the inert gas absorbed by the inert gas-absorbing molten pre-polymer ( ⁇ ) will be scattered at the top of the polymerization reactor, and the surface when the inert gas-absorbing molten pre-polymer ( ⁇ ) falls It is presumed that the renewability is impaired, resulting in a decrease in the polymerization rate.
- the polymerization temperature is usually in the range of 100 to 350 ° C., and the polymerization vessel 11 can be heated by the jackets 27, 28, 29.
- the inert gas absorbing device (A) and the polymerization device (B) are connected by a transfer pipe (C) provided with a transfer device.
- the transfer pipe 9 has a transfer pump 8 as a transfer device.
- the type of transfer pump is not particularly limited, but is usually a gear pump or a monopump. If the pressure of the inert gas absorption device (A) is higher than the pressure of the inert gas absorption molten polymer (h) supply zone of the polymerization device (B), the transfer device is used as shown in Fig. 2. May be a control valve 30. In this case, the inert gas-absorbing molten polymer ( ⁇ ) can be transferred only by opening and closing the valve.
- the material of the transfer pipe is not particularly limited, but is usually selected from metal materials such as stainless steel, carbon steel, hastelloy, nickel, titanium, chrome, and other alloys. Further, as shown in FIG. 1 (a), the transfer pipe can be heated by a jacket 26. Although the polycondensation reaction can be carried out without adding a catalyst, the polycondensation reaction is carried out in the presence of a catalyst if necessary in order to increase the polymerization rate.
- the polymerization catalyst used is not particularly limited as long as it is used in this field, and various known catalysts can be used.
- inert gas absorbing devices (A) and polymerization devices (B) are sequentially arranged and connected.
- polymerization devices (B) it is of course possible to increase the number of polymerization units (B) rather than the number of inert gas absorption units (A).
- various combinations are possible for the combination of the inert gas absorption device (A) and the polymerization device (B).
- an absorption device, a polymerization device, an absorption device, a polymerization device, Absorbing device, polymerizing device ... "or a combination of" absorbing device, polymerizing device, polymerizing device, absorbing device, polymerizing device ... "and the like can be used. This also applies to the case where the polycondensation polymer is circulated to the polymerization apparatus (B).
- the molten polycondensation prepolymer is treated with an inert gas in the inert gas absorption zone to obtain an inert gas absorption molten prepolymer ( ⁇ ), and then the inert gas absorption is obtained.
- the idea of transferring the prepolymer to the polymerization reaction zone where the inert gas-absorbing prepolymer is polymerized under a specific reduced pressure is a completely new concept and therefore uses a large amount of inert gas. Without the need to produce high-quality polycondensation polymers without coloration at high polymerization rates. It is quite surprising that the results are realized.
- the molten polycondensation prepolymer is treated with an inert gas in an inert gas absorption zone to obtain an inert gas absorption molten prepolymer ( ⁇ ),
- the inert gas-absorbing molten prepolymer (h) is subjected to polymerization under a pressure of 30 to 4, OOOPa, and the inert gas-absorbing molten prepolymer is brought to a predetermined degree of polymerization.
- a method is provided that includes this.
- a method for producing a polycondensation polymer comprising:
- the molten polycondensation prepolymer is treated with an inert gas in an inert gas absorption zone to obtain an inert gas absorption molten prepolymer ( ⁇ ),
- the inert gas-absorbing molten prepolymer () is subjected to polymerization under a pressure of 30 to 4, OOOPa,
- the inert gas-absorbing molten prepolymer ( ⁇ ) is polymerized to a predetermined polymerization degree.
- a method comprising:
- the polymerization reaction zone is a guide contact drop polymerization reaction zone having at least one guide fixed therein and extending downward, wherein the inert gas-absorbing molten prepolymer ( ⁇ ) is formed.
- the method according to the above item 8 wherein the polymerization is carried out by dropping while contacting the guide.
- the amount of the inert gas absorbed by the polycondensation prepolymer is constantly changed in the polymerization step (3) by the inert gas absorption molten prepolymer ( ⁇ ). 14. The method according to any one of items 8 to 13, wherein the amount is such that a foam state is maintained.
- the polycondensation polymer is an aliphatic polyester, an aliphatic polyamide, an aliphatic polycarbonate, an aliphatic aromatic polyester, an aliphatic aromatic polyamide, an aromatic polyester, or an aromatic polyamide.
- the preceding paragraph characterized in that it is selected from the group consisting of
- the method according to any one of 8 to 13. The method of the present invention can be advantageously implemented using the system of the present invention described above.
- melt viscosity was measured using a capillary rheometer (manufactured by Toyo Seiki Co., Ltd., Japan), and the viscosity at a shear rate of 1 was determined.
- a capillary rheometer manufactured by Toyo Seiki Co., Ltd., Japan
- An aliphatic aromatic polyester was produced using a system including an inert gas absorption device 1, a polymerization device 11 and a pipe 9 as shown in FIG. 1 (a).
- 10 holes having a diameter of 1.5 mm and a length of 3 cm are formed in the distribution plate 4 in the absorber casing 1a.
- the inside diameter of the inert gas absorption zone 5 is 0.2 m and the height is 4 m.
- the capacity of the molten prepolymer supply zone 12 in the polymerization apparatus casing 11 a is 0.000 35 m 3 .
- the inside diameter of the guide contact drop polymerization reaction zone 16 is 0.3 m.
- a wire mesh guide 14 with a width of 21.3 cm, a height of 8 m, and a pitch of 3 cm made from a SUS304 wire with a wire diameter of 3 mm is provided.
- Four of them are fixed to the distribution plate 13 by fixing brackets 17 [see Fig. 1 (c)].
- the four guides 14 are installed parallel to each other, Guide spacing is 4 cm.
- the upper end of guide 14 is located 3 cm below distribution plate 13, and the lower end of guide 14 is located at the boundary between the straight body and the cone of the polymerization reaction zone.
- the distribution board 13 has three holes at the top of each guide, three at equal intervals of 7 cm, for a total of 12 holes [see Fig. 1 (b)].
- the diameter of the holes is 1.5 mm.
- the length of the hole is 3 cm.
- An aliphatic aromatic polyester produced from ethylene dalicol and terephthalic acid, containing 200 ppm of antimony trioxide as a catalyst, and having a melt viscosity of 0.5 Pa's at 280 ° C.
- the molten prepolymer was supplied to the inert gas absorber 1 from the supply port 2 at a flow rate of 40 kg / r.
- Nitrogen is supplied to the inert gas absorption zone 5 from an inert gas supply port 6, and the pressure in the inert gas absorption zone 5 is controlled by a pressure control valve 7 to 150, 0 0 0. Controlled by Pa.
- the temperature of the supplied molten prepolymer is 280 ° C.
- the inert gas absorbing device 1 is heated to 280 ° C. by the jackets 24 and 25.
- the amount of nitrogen absorbed into the molten prepolymer is 5 Oppm by weight of nitrogen relative to the molten prepolymer (nitrogen absorption rate: 1.6 N / hr) (N ⁇ is measured under standard temperature and pressure conditions). It was ⁇ ).
- the molten pre-polymer was supplied to the polymerization apparatus 11 by the transfer pump 8 so that the liquid level of the molten pre-polymer at the bottom of the inert gas supply zone 5 was constant.
- the pipe 9 is heated to 280 ° C by the jacket 26. Moth
- the pressure in the contact drop polymerization reaction zone is controlled to 2 OOPa by a vacuum device 18. Also, polymerization equipment 1
- Example 2 An aliphatic aromatic polyester was produced in the same manner as in Example 1, except that the molten prepolymer was directly supplied from the supply port 10 to the polymerization apparatus 11 without passing through the inert gas absorption apparatus 1.
- the melt viscosity at 280 ° C of the aliphatic aromatic polyester extracted from the outlet 23 was 160 Pa ⁇ s. Compared with Example 1, it can be seen that the difference in melt viscosity before and after polymerization is small and the polymerization rate is low. Comparative Example 2
- the molten pre-polymer is directly supplied from the supply port 10 to the polymerization apparatus 11 without passing through the inert gas absorption apparatus 1; a guide contact drop
- An aliphatic aromatic polyester was produced in the same manner as in Example 1 except that nitrogen was supplied to the polymerization apparatus 11 (nitrogen absorption rate: 16 N / hr).
- the melt viscosity at 280 of the aliphatic aromatic polyester extracted from the outlet 23 was 230 Pa ⁇ s.
- An inert gas absorption device 1 is used to prepare a molten prepolymer of aliphatic polyamide made from hexamethylene diamine and adipic acid and having a melt viscosity of 1 Pas at 290 ° C.
- the temperature of the molten pre-bolizer and the temperature of the jackets 24, 25, 26, 27, 28, 29 are changed to 290 ° C and the polymerization pressure is set to 30 ° C.
- An aliphatic polyamide was produced in the same manner as in Example 1 except that OPa was changed to OPa.
- the melt viscosity at 290 ° C of the aliphatic polyamide extracted from the outlet 23 was 120 Pa's.
- An aliphatic aromatic polyester was produced in the same manner as in Example 1 except that the polymerization pressure was changed to 40 Pa.
- the melt viscosity at 280 ° C of the aliphatic aromatic polyester extracted from the outlet 23 was 350 Pas.
- Aliphatic aromatic polyesters were produced in the same manner as in Example 1 except that the polymerization pressure was changed to 25 Pa and 5,000 Pa, respectively.
- the melt viscosities at 280 ° C of the respective aliphatic aromatic polyesters extracted from the outlet 23 were 250 Pa ⁇ s and 230 Pa's, respectively.
- Example 7 Manufactured from ethylene carbonate and 1,4-butanediol (the molar ratio of 1,4-butanediol to ethylene carbonate is 1: 1.13), and 10 ppm of lead acetate is used as a catalyst.
- the molten prepolymer containing aliphatic polycarbonate having a number average molecular weight of 400 as measured by gel permeation chromatography (GPC) is supplied to the inert gas absorption device 1 to absorb the inert gas.
- GPC gel permeation chromatography
- the molar ratios of toluene, 1,6-hexanediol, and ethylene carbonate are 1: 1: 2.2).
- the catalyst contains 10 ppm of lead acetate and has a number average molecular weight of 4 ppm as measured by GPC. 0
- the molten polycarbonate prepolymer of aliphatic polycarbonate is supplied to the inert gas absorbing device 1 and the temperature of the molten prepolymer supplied to the inert gas absorbing device 1 and the jacket 24, 25, 26, 2 Change the temperature of 7, 28, 29 to 160 ° C and increase the polymerization pressure to 250 Pa
- An aliphatic polycarbonate was produced in the same manner as in Example 1 except that the composition was changed to Example 1.
- the number average molecular weight measured by GPC of the aliphatic polycarbonate extracted from the discharge pipe 23 was 2,210.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/674,719 US6265526B1 (en) | 1998-06-16 | 1999-06-16 | System and process for producing polycondensation polymer |
| EP99925338A EP1095960B1 (en) | 1998-06-16 | 1999-06-16 | System and process for producing polycondensation polymer |
| DE69919716T DE69919716T2 (de) | 1998-06-16 | 1999-06-16 | System und verfahren zur herstellung von polykondensationspolymeren |
| JP2000554787A JP4739523B2 (ja) | 1998-06-16 | 1999-06-16 | 重縮合ポリマーを製造する方法 |
| AU41669/99A AU4166999A (en) | 1998-06-16 | 1999-06-16 | System and process for producing polycondensation polymer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16839998 | 1998-06-16 | ||
| JP10/168399 | 1998-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999065970A1 true WO1999065970A1 (fr) | 1999-12-23 |
Family
ID=15867406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/003207 Ceased WO1999065970A1 (fr) | 1998-06-16 | 1999-06-16 | Systeme et procede de production de polymeres de polycondensation |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6265526B1 (ja) |
| EP (1) | EP1095960B1 (ja) |
| JP (1) | JP4739523B2 (ja) |
| KR (1) | KR100373896B1 (ja) |
| CN (1) | CN1117116C (ja) |
| AU (1) | AU4166999A (ja) |
| DE (1) | DE69919716T2 (ja) |
| TW (1) | TW459004B (ja) |
| WO (1) | WO1999065970A1 (ja) |
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| WO2005121211A1 (ja) * | 2004-06-14 | 2005-12-22 | Asahi Kasei Chemicals Corporation | 芳香族ポリカーボネートを効率的に製造する方法 |
| WO2005123805A1 (ja) * | 2004-06-16 | 2005-12-29 | Asahi Kasei Chemicals Corporation | 芳香族ポリカーボネートを製造するための重合装置 |
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| WO2006059608A1 (ja) * | 2004-11-30 | 2006-06-08 | Asahi Kasei Chemicals Corporation | 成形体の製造方法及び製造装置 |
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| JP2010059434A (ja) * | 1998-05-29 | 2010-03-18 | Solutia Inc | 連続的なポリアミド化方法 |
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| US8202591B2 (en) | 2004-11-30 | 2012-06-19 | Asahi Kasei Chemicals Corporation | Polyester resin, molded object thereof, and processes for producing these |
| JPWO2022210353A1 (ja) * | 2021-03-30 | 2022-10-06 |
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| TWI252241B (en) * | 2002-06-13 | 2006-04-01 | Asahi Kasei Corp | Polytrimethylene terephthalate resin |
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| DE102004019295A1 (de) * | 2004-04-21 | 2005-12-01 | Bayer Materialscience Ag | Verfahren zur Herstellung von Polycarbonat |
| CN101080439B (zh) * | 2004-12-20 | 2010-06-16 | 旭化成化学株式会社 | 工业蒸发装置 |
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| TW200738781A (en) * | 2005-12-12 | 2007-10-16 | Asahi Kasei Chemicals Corp | Process for industrially producing high-quality aromatic polycarbonate |
| CA2650610A1 (en) * | 2006-04-28 | 2007-11-08 | Wellman, Inc. | Methods for making polyester resins in falling film melt polycondensation reactors |
| CN100396711C (zh) * | 2006-06-28 | 2008-06-25 | 常熟市长江化纤有限公司 | 用作制备聚乳酸的聚合装置 |
| CN101220140B (zh) * | 2007-12-24 | 2010-08-25 | 中昊晨光化工研究院 | 一种酯交换和缩聚反应的反应装置 |
| EP2921223A1 (de) * | 2014-03-17 | 2015-09-23 | Uhde Inventa-Fischer GmbH | Vorrichtung und Verfahren zur Polykondensation von Prepolymeren unter Entfernung gasförmiger Spaltprodukte und Verwendung zur kontinuierlichen Herstellung von Polyamiden und/oder deren Co-Polymeren |
| JP2021118993A (ja) * | 2018-04-23 | 2021-08-12 | 石原産業株式会社 | インターナル、流動層反応装置、およびトリフルオロメチルピリジン系化合物の製造方法 |
| CN110885442B (zh) * | 2019-12-17 | 2022-04-05 | 郑州大学 | 一种共聚半芳香尼龙的合成方法 |
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| JP2010059434A (ja) * | 1998-05-29 | 2010-03-18 | Solutia Inc | 連続的なポリアミド化方法 |
| US8013107B2 (en) | 2003-10-10 | 2011-09-06 | Asahi Kasei Chemicals Corporation | Process for producing polyalkylene terephthalate, process for producing polyalkylene terephthalate molding and polyalkylene terephthalate molding |
| KR100813450B1 (ko) * | 2004-06-14 | 2008-03-13 | 아사히 가세이 케미칼즈 가부시키가이샤 | 방향족 폴리카르보네이트의 개선된 제조 방법 |
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| JPWO2022210353A1 (ja) * | 2021-03-30 | 2022-10-06 | ||
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1095960B1 (en) | 2004-08-25 |
| CN1117116C (zh) | 2003-08-06 |
| TW459004B (en) | 2001-10-11 |
| KR100373896B1 (ko) | 2003-02-26 |
| AU4166999A (en) | 2000-01-05 |
| US6265526B1 (en) | 2001-07-24 |
| JP4739523B2 (ja) | 2011-08-03 |
| EP1095960A4 (en) | 2003-01-22 |
| DE69919716D1 (de) | 2004-09-30 |
| KR20010071352A (ko) | 2001-07-28 |
| CN1303404A (zh) | 2001-07-11 |
| EP1095960A1 (en) | 2001-05-02 |
| DE69919716T2 (de) | 2005-04-28 |
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