WO2003106532A1 - ポリエステル樹脂の製造方法 - Google Patents
ポリエステル樹脂の製造方法 Download PDFInfo
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- WO2003106532A1 WO2003106532A1 PCT/JP2003/006407 JP0306407W WO03106532A1 WO 2003106532 A1 WO2003106532 A1 WO 2003106532A1 JP 0306407 W JP0306407 W JP 0306407W WO 03106532 A1 WO03106532 A1 WO 03106532A1
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- polyester resin
- solid
- melt
- polycondensation
- producing
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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
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
-
- 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
- C08G63/80—Solid-state polycondensation
-
- 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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
Definitions
- the present invention relates to a method for producing a polyester resin. More specifically, the present invention relates to a method for carrying out extremely high-speed solid-phase polycondensation of a polyester.
- Polyester resins especially polyethylene terephthalate (hereinafter sometimes abbreviated as PET) manufactured from terephthalic acid and ethylene glycol, are used in many materials and products, such as fibers, fabrics, molding resins and beverages. Widely used in bottles.
- PET polyethylene terephthalate
- a method for producing a polyester resin having improved productivity a method has been proposed in which a melt-polymerized polymer having a relatively low degree of polymerization is obtained by melt polycondensation of a polyester raw material monomer, and the melt-polymerized polymer is subjected to solid-phase polycondensation.
- a melt-polymerized polymer having a relatively low degree of polymerization is obtained by melt polycondensation of a polyester raw material monomer, and the melt-polymerized polymer is subjected to solid-phase polycondensation.
- Japanese Patent Application Laid-Open No. H10-512260 discloses that the average degree of polymerization obtained by melt polycondensation is about 5 to about 35 (intrinsic viscosity of about 0.10 to 0.15).
- a method has been disclosed in which a melt polymerization polymer having a low polymerization degree of 36 dl / g) is crystallized so that the crystallite size becomes 9 nm or more and then subjected to solid-phase polycondensation.
- the polycondensation can be carried out directly at a higher temperature, for example at 230 ° C., preferably at 240 ° C.
- a higher temperature for example at 230 ° C., preferably at 240 ° C.
- V is because the crystal grows to suppress the movement of molecules, but it is not always possible to obtain a satisfactory solid-state polycondensation rate for unknown reasons.
- the USP 6 2 8 4 8 6 6 discloses, as a co Polymerization polyester for bottles less haze at low temperature, the copolymerization amount of the dicarboxylic acid component copolymerization amount (molar 0/0) a diol component intrinsic viscosity a sum 6 or more polyester (mol%) 0. 2 5 from 0. 4 O dl / g solid phase polycondensation methods under specific conditions the melt polymerization polymer is disclosed.
- solid-phase polycondensation is performed using a rotary-vacuum tumble dryer, which is not necessarily industrially advantageous since it is a solid-phase polycondensation in a high vacuum state.
- the melting point of the melt-polymerized polymer is relatively low due to the large amount of copolymerized components. Therefore, unless the vacuum is high, the solid-state polycondensation temperature cannot be set high. But slow and inefficient.
- An object of the present invention is to provide a method for performing solid-phase polycondensation of polyester at an extremely high speed, and thus producing polyester with good productivity. Further, the present invention enables the solid-phase polycondensation of polyester at a high speed without employing special conditions such as high vacuum, and furthermore, the obtained polyester resins are fused together, or the polyester resin is added to the reactor. An object of the present invention is to provide a method for producing a polyester with good productivity without a problem of handling property such as adhesion of water. Invention disclosure>
- the present inventors have conducted intensive studies to solve the above problems, and as a result, controlling the copolymerization amount, intrinsic viscosity, apparent crystallite size, and solid-phase polycondensation temperature of the molten polymer to be subjected to solid-phase polymerization, The present inventors have found that the above objects can be achieved by performing polycondensation, and have reached the present invention.
- the gist of the present invention is to polycondensate a dicarboxylic acid component mainly containing terephthalic acid or an ester-forming derivative thereof and a diol component mainly containing ethylene glycol through an esterification reaction or a transesterification reaction.
- the amount of the copolymerization component other than the terephthalic acid component and the ethylene glycol component is reduced by the solid-state polycondensation of the melt-polymerized polymer produced by the above method.
- a melt-polymerized polymer having a viscosity of 5.5 or less, an intrinsic viscosity of ⁇ .08 (11 / ⁇ or more and 0.50 dl / g or less, and an apparent crystallite size of less than 9 nm is obtained.
- a melt-polymerized polymer having an amount of copolymer component other than terephthalic acid component and ethylene dalicol component of 5.5 or less, an intrinsic viscosity of 0.08 to 0.50 d 1 / g and an apparent crystallite size of less than 9 nm.
- the melt-polymerized polymer in the method for producing a polyester resin of the present invention comprises an esterification reaction of a dicarponic acid component mainly containing terephthalic acid or a polyester-forming derivative thereof and a diol component mainly containing ethyl blendalycol.
- the amount of the component is 5.5 or less.
- the copolymerization component amount other than terephthalic acid component and Echire glycol component 5.5 below, the amount ratio of the components other than terephthalic acid or an ester-forming derivative thereof against the total dicarboxylic acid component (mol 0/0 )
- A is B and the ratio (mol%) of diol components other than ethylene dalicol to all diol components is B, A + B is 5.5 or less.
- the amount of the copolymer component is preferably 4.5 or less.
- the amount of the copolymer component exceeds 5.5, the melting point of the polyester resin is lowered, and the solidification polycondensation temperature is restricted, so that the polycondensation rate becomes slow. In the case of molding, especially when stretching and heat setting are performed to improve strength and heat resistance, the effects of stretching and heat setting are not sufficiently exhibited.
- ester-forming derivative of terephthalic acid examples include alkyl esters having about 1 to 4 carbon atoms of terephthalic acid, such as dimethyl terephthalate, and haptic compounds.
- Dicarboxylic acids other than terephthalic acid or its ester-forming derivative include phthalic acid, isophthalic acid, 1,3-phenylenedioxydiacetic acid, 4,4'-diphenyldicarboxylic acid, and 4,4'-diphenylate.
- Aromatic dicarboxylic acids such as 2,6-naphthalenedicarboxylic acid; alkyl esters of aromatic dicarboxylic acids having about 1 to 4 carbon atoms, such as dimethyl 2,6-naphthalenedicarboxylic acid; and halides; hexahydroterephthalate Alicyclic dicarboxylic acids such as acids; succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, pendecane Carboxylic acids, fat side dicarboxylic acids such as dodecane dicarboxylic acid; and alkyl esters of number 1 to about 4 carbon atoms in the alicyclic di
- diols other than ethylene glycol include, for example, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, decamethylene glycol, neopentinole glycol, 2-ethynole 2-butyl-1,3-propanediol, etc.
- Aliphatic diols such as diethylene glycolone, triethylene glycol / ethylene glycol, polyethylene glycol, polytetramethylene ether dalicol, 1,4-cyclohexanediole, 1,4-cyclohexanedimethylonele, etc.
- Aromatic diols such as dionole and xylylene glycol, and 2,2-bis (4'-hydroxyphenyl) An ethylene oxide adduct or propylene oxide adduct of propane, and the like.
- monofunctional components such as stearyl alcohol, stearic acid, and benzoic acid; and trifunctional or higher polyfunctional compounds such as trimellitic acid, trimesic acid, pyromellitic acid, trimethylolethane, trimethylolpropane, glycerol, and pentaerythritol.
- trimellitic acid trimesic acid
- pyromellitic acid trimethylolethane
- trimethylolpropane trimethylolpropane
- glycerol glycerol
- pentaerythritol pentaerythritol
- the ratio of terephthalic acid or its ester-forming derivative to all dicarboxylic acid components is preferably 94.5 mol% or more, and more preferably 96 mol%. % or more, whereas, the proportion is 9 4. 5 mol% or more is preferred for all the diol component of Echirendari call, further 9 6 mole 0 /. The above is preferred.
- the melt-polymerized polymer in the present invention is basically produced by a conventional method for producing a polyester resin. That is, a dicarboxylic acid containing terephthalic acid or an ester-forming derivative thereof as a main component and a diol containing ethylene glycol as a main component are usually used in a ratio of dicarboxylic acid: diol of 1: 1 to 1: 2 (molar ratio).
- a dicarboxylic acid containing terephthalic acid or an ester-forming derivative thereof as a main component and a diol containing ethylene glycol as a main component are usually used in a ratio of dicarboxylic acid: diol of 1: 1 to 1: 2 (molar ratio).
- an esterification reaction tank usually at a temperature of about 240 to 280 ° C, usually under normal pressure to about 0.4 MPa, and under stirring for 1 to 10 hours.
- the obtained esterification reaction product or polyester low molecular weight product as the ester exchange reaction product is subjected to a polycondensation reaction. And usually in the presence of a polycondensation catalyst, at a temperature of about 250 to 290 ° C, and gradually reduced from normal pressure to a final pressure of about 133 to 13.3 Pa. Under stirring, the intrinsic viscosity is between 0.08 and 0.5 Odl / g While when the circumference, usually prepared by 0. About 5-5 hours melt polycondensation.
- the melt-polymerized polymer of the present invention has a copolymer component other than the terephthalic acid component and the ethylene glycol component of 5.5 or less, so that the terephthalic acid component and the ethylene glycol component in the present invention. , And a copolymer component other than the terephthalic acid component and the ethylene glycol component when the amount of the copolymer component is 5.5 or less. use.
- the above reaction is carried out in a continuous or batch system, but a continuous system is preferred.
- the esterification reaction tank and the polycondensation tank may each be a single stage or a multistage.
- the melt polycondensation can be omitted.
- Known catalysts such as butoxide, titanium oxalate, titanium compounds such as titanium oxalate and the like can also be used.
- the transesterification catalyst one or more kinds of compounds of metals such as titanium, magnesium, calcium, manganese, lithium and zinc are used. Specific examples include organic salts of these metals, alcoholates, carbonates, and the like. Among them, magnesium acetate, calcium acetate, manganese acetate, lithium acetate and the like are preferably used.
- the amount of the transesterification catalyst used is generally such that the content as a metal atom derived from the catalyst is usually about 1 to 20 ppm based on the obtained polyester resin.
- Examples of the polycondensation reaction catalyst include germanium compounds such as germanium dioxide, germanium tetroxide, germanium hydroxide, genolemanium oxalate, genolemanium tetraethoxide, germanium tetra-n-butoxide, antimony trioxide, antimony pentoxide, antimony acetate, Antimony compounds such as antimony trisethylene glycoloxide; titanium compounds such as titanium tetraethoxide, titanium tetra-n-propoxide, titanium tetra-i-propoxide, titanium tetra-n-butoxide, titanium oxalate, and potassium titanium oxalate; Cobalt formate, cobalt acetate, cobalt stearate, cobalt oxalate, cobalt carbonate, cobalt bromide, etc.
- germanium compounds such as germanium dioxide, germanium tetroxide, germanium hydroxide, genolemanium oxa
- Tin compounds such as baltic compounds, tin acetate, tin oxalate, and tin bromide are used, and these may be used alone or in combination of two or more.
- oxides, inorganic acid salts, organic acid salts, and alcoholate compounds of at least one metal selected from germanium, antimony and titanium are used.
- the amount of the polycondensation reaction catalyst used is generally such that the content as a metal atom derived from the catalyst is about 1 to 500 ppm based on the obtained polyester resin.
- ester phosphate such as trimethyl phosphate, triethyl phosphate, tri-n-butyl phosphate, trioctynolephosphate, triphenylinolephosphate, and tricresyl phosphate are used as stabilizers.
- Phosphites, phosphites such as triphenylenophosphate, trisdodecyl phosphate, trisnoylphenyl phosphite, methinorea acid phosphate, ethinorea acid phosphate, isopropinorea acid phosphate, butinorea acid phosphate, Acidic phosphate esters such as dibutynolephosphate, monobutyl phosphate, and octyl phosphate, and phosphoric acid, phosphorous acid, hypophosphorous acid, and polyphosphoric acid Tertiary amines such as triethylamine, tri-n-butylamine and benzyldimethylamine, tetraethylammonium hydroxide, tetra-n-butylammonium hydroxide, A quaternary ammonium hydroxide such as trimethylbenzyl ammonium hydroxide or a basic compound such as lithium carbonate, sodium carbonate, potassium carbon
- the amount of the phosphorus compound used is such that the content as a phosphorus atom derived from the phosphorus compound is usually about 1 to 20 ppm based on the obtained polyester resin.
- Preferred combinations of the catalyst and the additive and the usage ratio include, for example, those described in EP1273610-A1. '
- the melt-polymerized polymer obtained by melt polycondensation may be sprayed to the outside through pores provided at the bottom of the polycondensation tank to form fine particles, or may be discharged from the outlet provided at the bottom of the polycondensation tank. Droplets may be extracted in the air or water. Alternatively, the pellets may be extracted in a strand shape and then cooled with or after cooling with water, and then cut with a cutter into pellet-like particles. Further, the obtained pellets may be pulverized into fine particles having a smaller particle size.
- a polyester resin is produced by solid-phase polycondensation of the melt-polymerized polymer obtained as described above, and apparent crystallites of the melt-polymerized polymer obtained by cooling and subjected to solid-phase polycondensation.
- the size (ACS) is less than 9 nm, preferably 8 nm or less, more preferably 7 nm or less. If the apparent crystallite size of the melt-polymerized polymer is 9 nm or more, the solid-state polycondensation rate becomes slow.
- the crystallite size of the melt polymer is preferably as small as possible from the viewpoint of keeping the initial reaction rate in solid-state polycondensation as fast as possible, and the lower limit is 0.
- the apparent crystallite size is a parameter representing the size of the crystal structure, and means the apparent crystallite size (010) related to reflection obtained from wide-angle X-ray diffraction spectrum analysis (010).
- the intrinsic viscosity of the melt-polymerized polymer of the present invention is from 0.08 dl Zg to 0.50 d1 Zg. It is preferably at least 0.1 d1 Zg, more preferably at least 0.15 d1 / g, particularly preferably at least 0.20 d1 / g, while it is preferably at most 0.45 d1 / g, It is preferably at most 0.40 d 1 / g. 0.08 d intrinsic viscosity Below l Zg, the rate of polycondensation in the subsequent solid-phase polycondensation is significantly reduced,
- melt polycondensation equipment for raising its intrinsic viscosity becomes expensive, and the melt polycondensation for raising the degree of polymerization takes a long time, so the production time is long. Become. ,
- a method of rapidly cooling the molten polymer in the molten state that is, a method of increasing the cooling rate as high as possible can be mentioned.
- the cooling rate cannot be specified unconditionally because the crystallization rate differs depending on the molecular weight of the melt-polymerized polymer.However, from the molten state to the crystallization temperature of the melt-polymerized polymer or less, within 10 seconds, preferably within 5 seconds, and more. Preferably, the cooling may be performed within one second.
- the intrinsic viscosity can be controlled within the above range by controlling the polycondensation temperature, time, and degree of pressure reduction.
- the intrinsic viscosity range of the melt-polymerized polymer described in the present invention is lower than the viscosity range of a commonly used melt-polymerized polymer, so that it can be reached at a lower temperature, in a shorter time, and at a lower degree of reduced pressure.
- the acid value of the melt-polymerized polymer is usually in the range of 10 to 100 Ommo1 / kg, and the content of the cyclic trimer is usually in the range of 4000 to 12000 p.
- the average particle size of the melt-polymerized polymer particles subjected to the solid-phase polycondensation is preferably 10 ⁇ m or more, more preferably 50 ⁇ or more, and particularly preferably 100 / xm or more. On the other hand, it is preferably at most 1,500 ⁇ , more preferably at most 1,300 ⁇ , still more preferably at most ⁇ , particularly preferably at most 500 ⁇ m. If the average particle size exceeds 1,500 m, the solid-state polycondensation rate tends to be slow, and if the average particle size is less than 10 / m, there is a tendency for the particles to be easily scattered in the air.
- the amount of the copolymer component other than the terephthalic acid component and the ethylene glycol component obtained as described above is 5.5 or less, the intrinsic viscosity is 0.08 to 0.50 dLZg, and the apparent crystallite size (ACS )
- ASMO apparent crystallite size
- the solid-state polycondensation is carried out in a state where it is kept at, preferably, 7 nm or less.
- the fact that the solid-phase polycondensation is performed with the crystallite size (ACS) kept at less than 9 nm is based on the fact that the polyester crystallite size after solid-phase polycondensation (ACS edition) is less than 9 nm. You can check.
- the fact that the solid-phase polycondensation is performed with the crystallite size (ACS,) kept at 8 nm or less means that the crystallite size (ACS,) of the polyester after solid-phase polycondensation is 8 nm. It can be confirmed by the following.
- the solid-state polycondensation temperature may be determined by, for example, selecting the heating rate or maintaining the temperature at 190 ° C or lower for a certain period of time, depending on the conditions for raising the temperature of the melt-polymerized polymer to the solid-state polycondensation temperature.
- the crystallization of the surface of the melt-polymerized polymer may progress during the heating process to reach the temperature, but moderate crystallization is caused by adhesion to the reactor and solid-state polycondensation rate by fusion of the melt-polymerized polymers. There is a tendency that the decrease can be prevented.
- the solid-state polycondensation temperature of the present invention is at least 140 ° C. higher than the glass transition temperature of the melt-polymerized polymer and at most the melting point.
- the temperature is a temperature higher than the glass transition temperature of the melt-polymerized polymer by 1450 ° C or higher and the melting point or lower, more preferably a temperature higher than the glass transition temperature of the melt-polymerized polymer by 150 ° C or higher, particularly preferably.
- solid-phase polycondensation can efficiently proceed while minimizing the progress of crystallization. If the solid-phase polycondensation temperature is lower than the above, the polycondensation rate is low and productivity is poor. If the temperature exceeds the above range, the molten polymers are fused to each other due to the melting of the polymers and the polymer adheres to the reactor. Problems, such as product quality or productivity.
- the solid-phase polycondensation is usually performed in an inert gas atmosphere, and if necessary, is carried out by flowing the molten polymer particles so that the polymer particles do not stick to each other. It takes less than 10 hours.
- the melting point mentioned here refers to the peak top temperature of the melting peak of the sample (molten polymer) when the temperature is raised at a rate of 20 ° CZ using a differential scanning calorimeter.
- Solid-phase polycondensation By this solid-phase polycondensation, the degree of polymerization can be further increased, and oligomers and acetoaldehyde can be reduced to some extent.
- Solid-phase polycondensation can be performed under reduced pressure of about 1333 to 13.3 Pa, but in industrial production of a somewhat large scale, the equipment cost of a decompression device, solid-phase polycondensation tank, etc. increases, and it is economical. From a viewpoint, it is preferable to perform the process at about normal pressure, particularly at a pressure of 100 kPa to 150 kPa.
- the solid-phase polycondensation is performed at the above-mentioned temperature, and the temperature of the molten m-polymer to be subjected to the solid-phase polycondensation is raised to 100 ° C. until the temperature reaches at least 200 ° C.
- the temperature is preferably raised at a rate of not more than C / min, more preferably at a rate of not more than 100 ° C./min until the temperature reaches at least 180 ° C. That is, for example, since polyethylene terephthalate has a high crystallization rate at around 180 ° C., when it reaches this temperature range rapidly, the crystallites grow rapidly and the crystallite size becomes large.
- the intrinsic viscosity of the polyester resin obtained by solid-state polycondensation is generally 0.60 d1 Zg or more, preferably 0.65 d1 / g or more, and more preferably 70 d1 Zg or more. Also, it is usually 1.20 d 1 Zg or less, preferably 1.10 Od lZg or less, and more preferably 1.OO d lZg or less. If it is less than 0.60 d1_g, uneven thickness tends to occur, especially when used for blow molding, and if it is 1.20 dl / g, it is particularly due to insufficient resin filling in the mold during injection molding. Abnormal shape (sinking) easily occurs.
- the acid terminal concentration in the polyester resin obtained by solid-phase polycondensation is usually 5 It is not less than mmo 1 / kg and not more than 10 Ommo 1 / kg, and the amount of cyclic trimer contained in the resin is usually not less than 1500 ppm and not more than 8000 ppm.
- the average particle size of the polyester resin obtained by the solid-phase polymerization depends on the average particle size of the melt-polymerized polymer, and is preferably at least 10 ⁇ , more preferably at least 50 ⁇ , and particularly preferably at least 100 ⁇ . On the other hand, it is preferably at most 1,500 / m, more preferably at most 1,300 / m, more preferably at most 1,000 / m, particularly preferably at most 500 ⁇ m.
- the polyester resin particles obtained by the solid-phase polycondensation may be further granulated, if necessary, into a shape such as granules, which is easy to handle.
- the wide-angle X-ray scattering spectrum of the sample was measured, and the diffraction angle S from the (0 10) plane, the half-width of the diffraction peak, the wavelength of the X-ray, and the constant (assumed to be 1) were calculated as follows. It was calculated by substituting into 1.
- the average crystallite size was measured by wide-angle X-ray powder diffraction.
- the measurement method or procedure is as follows.
- X-ray generator Rigaku Corporation URTRAX1 8 [40kV, 250mA] Target: C u ⁇ ⁇ ,
- the integration time at each step was 5 seconds / step.
- ⁇ is the X-ray wavelength [ ⁇ ] 3 is the (0 10) peak half-value width [rad], and 0 is the diffraction angle of the (01 0) peak [rad].
- IV Intrinsic viscosity (IV) a. Transfer 0.25 g of the freeze-ground resin sample to a mixed solvent of phenol / tetrachloroethane (heavy 1) at a concentration (c) of 1.0 g Zd1 at 140 ° C for 30 minutes. After dissolution, the relative viscosity (Tjrel) with the solvent was measured at 30 ° C using an Ubbelohde capillary viscometer.
- Terephthalic acid and ethylene glycol were continuously supplied to a slurry preparation tank so as to have 13.0 parts of terephthalic acid and 5.82 parts of ethylene glycol to prepare a slurry.
- the slurry was continuously supplied to the first-stage esterification reaction tank, and the esterification reaction was continuously performed at 260 ° C. under substantially normal pressure, and a bis (2-hydroxy ester) having an ester reaction rate of 84% was obtained.
- Chill) Terephthalate and its low polymer were prepared.
- the reactants are continuously supplied to the second-stage esterification reaction tank, and the reaction is continuously carried out at a temperature of about 255 ° C under substantially normal pressure. And its low polymer were obtained.
- the reactants were continuously supplied to the first-stage polycondensation reaction tank, and 0.011 parts of orthophosphoric acid and 0.038 parts of diantimony trioxide were continuously added to the reactants.
- the reaction is carried out continuously at 280 ° C under a reduced pressure of 2 to 4 kPa for a residence time of about 1 hour, and then the reactants in the first-stage polycondensation reaction tank are subjected to the second-stage polycondensation reaction.
- the polycondensation reaction was continuously carried out at 280 ° C. under a reduced pressure of 200 to 400 Pa at a residence time of about 1 hour.
- the obtained polycondensation reaction product was continuously withdrawn into water as a strand and pelletized. At this time, the pellet was transparent and had not substantially crystallized.
- the obtained pellet was pulverized by a rotary mill to obtain a pulverized product (a melt polymerization polymer which is a raw material for solid-phase polycondensation).
- the analysis results of the solid-phase polycondensation raw material (melt polymerized polymer) are shown in Table 1 in the column of solid-phase polycondensation raw material.
- a pulverized product (solid-state polycondensation raw material (melt polymerized polymer)) was obtained in the same manner as in Example 2 except that the amount of tetrabutoxytitanium was changed to 0.0034.
- the analysis results of the solid-phase polycondensation raw material (melt polymerized polymer) are shown in Table 1 in the column of solid-phase polycondensation raw material. Subsequently, solid-state polycondensation was performed in the same manner as in Example 1 except that the solid-phase polycondensation temperature and the solid-phase polycondensation time shown in Table 1 were used. The analysis results of the obtained polymer are shown in the product column of Table 1.
- Milled product solid phase weight in the same manner as in Example 3 except that 0.34 parts of isophthalic acid and 12.7 parts of terephthalic acid were continuously supplied to the slurry preparation tank instead of 13 parts of terephthalic acid.
- a condensation raw material (melt polymerized polymer) was obtained.
- the analysis results of the solid-phase polycondensation raw material (melt-polymerized polymer) are shown in the solid-phase polycondensation raw material column in Table 1. Subsequently, solid-phase polycondensation was performed in the same manner as in Example 1 except that the solid-phase polycondensation temperature and the solid-phase polycondensation time shown in Table 1 were used. The analysis results of the obtained polymer are shown in the product column of Table 1.
- Example 5 Except for extending the polycondensation reaction time at 280 ° C and a reduced pressure of 200 to 400 Pa, and using a freeze-milling machine for grinding, A solid-phase polycondensation raw material (melt-polymerized polymer)) was obtained.
- the analysis results of the solid-phase polycondensation raw material (melt polymerized polymer) are shown in the solid-phase polycondensation raw material column in Table 1.
- solid-phase polycondensation was performed in the same manner as in Example 1 except that the solid-phase polycondensation temperature and the solid-phase polycondensation time shown in Table 1 were used.
- the analysis results of the obtained polymer are shown in the product column of Table 1.
- Example 6 Example 6
- a ground product (solid-state polycondensation raw material (melt polymerized polymer)) was obtained in the same manner as in Example 3, except that the grinding time in the rotary mill was shortened.
- the analysis results of the solid-phase polycondensation raw material (melt polymerized polymer) are shown in the column of solid-phase polycondensation raw material in Table 1.
- solid-phase polycondensation was performed in the same manner as in Example 1 except that the solid-phase polycondensation temperature and the solid-phase polycondensation time shown in Table 1 were used.
- the analysis results of the obtained polymer are shown in the product column of Table 1.
- Example 3 solid-state polycondensation raw material (melt polymerized polymer)
- lg solid-state polycondensation raw material (melt polymerized polymer)
- lg solid-state polycondensation raw material (melt polymerized polymer)
- the temperature was raised to 170 ° C. over 30 minutes, and the temperature was maintained at 170 ° C. for 30 minutes.
- the recovered pulverized product was used as a solid phase polycondensation raw material (melt polymerized polymer), and solid phase polycondensation was carried out in the same manner as in Example 1.
- the analysis results of the obtained polymer are shown in the product column of Table 1. Comparative Example 1
- a powdered product (solid phase weight) was prepared in the same manner as in Example 3 except that 73 parts of isophthalic acid and 12.3 parts of terephthalic acid were continuously supplied to the slurry preparation tank instead of 13 parts of terephthalic acid.
- a condensation raw material (melt polymerized polymer) was obtained.
- the analysis results of the solid-phase polycondensation raw material (melt-polymerized polymer) are shown in the column of solid-phase polycondensation raw material in Table 1. Subsequently, solid-phase polycondensation was performed in the same manner as in Example 1 except that the solid-phase polycondensation temperature and the solid-phase polycondensation time shown in Table 1 were used. The analysis results of the obtained polymer are shown in the product column of Table 1. Comparative Example 4
- Example 1 Same as Example 1 except that the pulverized product (solid-state polycondensation raw material (melt polymerized polymer)) obtained in Example 3 was used and the solid-phase polycondensation temperature and solid-phase polycondensation time shown in Table 1 were used. Then, solid-phase polycondensation was performed. The analysis results of the obtained polymer are shown in the product column of Table 1. table 1
- the solid-phase polycondensation rate is high, and a high-molecular-weight polyester resin can be obtained extremely quickly.
- solid-phase polycondensation of polyester can be performed at high speed without employing special conditions such as high vacuum, and the obtained polyester resin is fused or reacted. Since there is no handling problem such as adhesion of polyester resin to polyester, polyester can be produced industrially with good productivity.
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Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03760134A EP1518878B1 (en) | 2002-06-12 | 2003-05-22 | Process for producing polyester resin |
AU2003235407A AU2003235407A1 (en) | 2002-06-12 | 2003-05-22 | Process for producing polyester resin |
US11/009,030 US7138481B2 (en) | 2002-06-12 | 2004-12-13 | Process for producing polyester resin |
Applications Claiming Priority (2)
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JP2002171708 | 2002-06-12 | ||
JP2002-171708 | 2002-06-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/009,030 Continuation US7138481B2 (en) | 2002-06-12 | 2004-12-13 | Process for producing polyester resin |
Publications (1)
Publication Number | Publication Date |
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WO2003106532A1 true WO2003106532A1 (ja) | 2003-12-24 |
Family
ID=29727820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/006407 WO2003106532A1 (ja) | 2002-06-12 | 2003-05-22 | ポリエステル樹脂の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7138481B2 (ja) |
EP (1) | EP1518878B1 (ja) |
CN (1) | CN1323097C (ja) |
AU (1) | AU2003235407A1 (ja) |
WO (1) | WO2003106532A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8329857B2 (en) | 2006-08-02 | 2012-12-11 | Mitsubishi Chemical Corporation | Polyester resin particle and method for producing the same |
CN105462187A (zh) * | 2014-09-10 | 2016-04-06 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN105670233A (zh) * | 2014-11-18 | 2016-06-15 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN114805765A (zh) * | 2022-03-10 | 2022-07-29 | 万凯新材料股份有限公司 | 建材用peat树脂及其制备方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US7459113B2 (en) | 2004-03-08 | 2008-12-02 | Eastman Chemical Company | Process of making a container from polyester polymer particles having a small surface to center intrinsic-viscosity gradient |
CN101367915B (zh) * | 2008-10-10 | 2011-07-27 | 北京服装学院 | 一种半连续直接酯化法制造低熔点聚酯的方法 |
CN101768254B (zh) * | 2008-12-29 | 2012-12-05 | 合肥杰事杰新材料股份有限公司 | 含1,2-丙二醇链结构的聚酯共聚物及其制备方法 |
CN102718954B (zh) * | 2011-03-31 | 2014-10-01 | 中国石油化工股份有限公司 | 一种阻隔性聚酯及其制备方法 |
EP2810988A4 (en) * | 2012-01-30 | 2015-09-02 | Toray Industries | POLYESTER COMPOSITION WITH ATTACHABILITY IN ATMOSPHERIC PRESSURE, MANUFACTURING METHOD, FIBER THEREFORE AND FORMING ITEMS WITH IT |
US9487620B2 (en) * | 2012-03-02 | 2016-11-08 | Invista North America S.A.R.L. | On-line control of molecular weight in continuous solid state polymerization processes |
JP5852626B2 (ja) | 2012-11-06 | 2016-02-03 | 富士フイルム株式会社 | ケテンイミン化合物、ポリエステルフィルム、太陽電池モジュール用バックシートおよび太陽電池モジュール |
CN103668679B (zh) * | 2013-12-18 | 2014-12-10 | 浙江铭龙基布有限公司 | 用于水池布中的基布的制造方法 |
JP6682103B2 (ja) * | 2014-09-02 | 2020-04-15 | 国立大学法人広島大学 | 高耐熱性ポリエステルシート |
Citations (1)
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WO1996022319A1 (en) * | 1995-01-20 | 1996-07-25 | E.I. Du Pont De Nemours And Company | Production of poly(ethylene terephthalate) |
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US3728309A (en) * | 1969-06-13 | 1973-04-17 | Mobil Oil Corp | Progressive heating in polyester condensations |
CN1034339C (zh) * | 1994-10-20 | 1997-03-26 | 中国科学院长春应用化学研究所 | 新型热致液晶聚酯酰亚胺的合成 |
US5714262A (en) * | 1995-12-22 | 1998-02-03 | E. I. Du Pont De Nemours And Company | Production of poly(ethylene terephthalate) |
US5510454A (en) * | 1995-01-20 | 1996-04-23 | E. I. Du Pont De Nemours And Company | Production of poly(ethylene terephthalate) |
US5830982A (en) * | 1995-01-20 | 1998-11-03 | E. I. Du Pont De Nemours And Company | Production of poly (ethylene terephthalate) |
US5663281A (en) * | 1996-07-30 | 1997-09-02 | E. I. Du Pont De Nemours And Company | Process for preparing high molecular weight polyesters |
US6284866B1 (en) * | 1999-12-07 | 2001-09-04 | Wellman, Inc. | Method of preparing modified polyester bottle resins |
CN1271111C (zh) * | 2001-01-25 | 2006-08-23 | 三菱化学株式会社 | 聚酯树脂及由它制成的成形品,以及聚酯树脂的制造方法 |
-
2003
- 2003-05-22 CN CNB038136430A patent/CN1323097C/zh not_active Expired - Fee Related
- 2003-05-22 EP EP03760134A patent/EP1518878B1/en not_active Expired - Lifetime
- 2003-05-22 WO PCT/JP2003/006407 patent/WO2003106532A1/ja active Application Filing
- 2003-05-22 AU AU2003235407A patent/AU2003235407A1/en not_active Abandoned
-
2004
- 2004-12-13 US US11/009,030 patent/US7138481B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1996022319A1 (en) * | 1995-01-20 | 1996-07-25 | E.I. Du Pont De Nemours And Company | Production of poly(ethylene terephthalate) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8329857B2 (en) | 2006-08-02 | 2012-12-11 | Mitsubishi Chemical Corporation | Polyester resin particle and method for producing the same |
CN105462187A (zh) * | 2014-09-10 | 2016-04-06 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN105462187B (zh) * | 2014-09-10 | 2019-05-21 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN105670233A (zh) * | 2014-11-18 | 2016-06-15 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN105670233B (zh) * | 2014-11-18 | 2019-05-21 | 东丽纤维研究所(中国)有限公司 | 一种聚酯组合物及其制备方法和用途 |
CN114805765A (zh) * | 2022-03-10 | 2022-07-29 | 万凯新材料股份有限公司 | 建材用peat树脂及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
US7138481B2 (en) | 2006-11-21 |
US20050239997A1 (en) | 2005-10-27 |
AU2003235407A1 (en) | 2003-12-31 |
EP1518878A4 (en) | 2009-02-25 |
EP1518878B1 (en) | 2012-12-12 |
CN1659208A (zh) | 2005-08-24 |
EP1518878A1 (en) | 2005-03-30 |
CN1323097C (zh) | 2007-06-27 |
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