WO2003072633A1 - Resine polyester et catalyseur destine a la production de polyester, procede de production de cette resine polyester au moyen de ce catalyseur, resine polyester obtenue au moyen de ce catalyseur et recipient moule creux comprenant cette resine polyester - Google Patents
Resine polyester et catalyseur destine a la production de polyester, procede de production de cette resine polyester au moyen de ce catalyseur, resine polyester obtenue au moyen de ce catalyseur et recipient moule creux comprenant cette resine polyester Download PDFInfo
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- WO2003072633A1 WO2003072633A1 PCT/JP2003/001466 JP0301466W WO03072633A1 WO 2003072633 A1 WO2003072633 A1 WO 2003072633A1 JP 0301466 W JP0301466 W JP 0301466W WO 03072633 A1 WO03072633 A1 WO 03072633A1
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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
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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
- C08G63/80—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
- C08G63/78—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- 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
- C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
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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
- C08G63/84—Boron, aluminium, gallium, indium, thallium, rare-earth metals, or compounds thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
Definitions
- the present invention relates to a polyester resin And a catalyst for polyester production, a method for producing a polyester resin using the catalyst, a polyester resin obtained by the catalyst, and a hollow molded container made of the polyester resin.
- Polyester production catalyst capable of polycondensing aromatic dicarboxylic acids and aliphatic diols at a polymerization rate
- Polyester resins for example, polyethylene terephthalate, have excellent mechanical strength, heat resistance, transparency, and gas barrier properties, and are used in beverage filling containers such as juices, soft drinks, and carbonated drinks. Therefore, it is suitably used as a material for films, sheets, fibers and the like.
- polyester resins are usually produced using dicarboxylic acids such as terephthalic acid and aliphatic diols such as ethylene glycol as raw materials.
- dicarboxylic acids such as terephthalic acid and aliphatic diols
- aliphatic diols such as ethylene glycol as raw materials.
- a lower condensate ester low polymer
- This low-order condensate is subjected to a deglycol reaction (liquid-phase polycondensation) in the presence of a condensation catalyst to increase the molecular weight.
- solid-phase polycondensation is usually performed to further increase the molecular weight and to lower the molecular weight and to adversely affect the taste of the beverage. Is volatilized and removed.
- the polyester resin is supplied to a molding machine such as an injection molding machine to form a preform for a hollow molded body, and the preform is inserted into a mold having a predetermined shape and stretch blow molded. Furthermore, it is heat-treated (heat set) and molded into a hollow molded container.
- an antimony compound, a germanium compound, or the like has been conventionally used as a polycondensation medium.
- polyethylene terephthalate produced using an antimony compound as a catalyst is inferior to polyethylene terephthalate produced using a germanium compound as a catalyst in terms of transparency and heat resistance.
- the germanium compound is considerably expensive, so that the production cost of the polyester resin is increased. For this reason, in order to reduce the cost of the catalyst, it is necessary to perform a process such as collecting and reusing the germanium compound scattered during the polycondensation.
- antimony compounds and germanium compounds do not have high polymerization activity per metal weight, it is necessary to use a relatively high concentration of polyester resin when producing a polyester resin at an industrially satisfactory production rate.
- antimony or germanium is usually 50 ⁇ ⁇ ⁇ ! ⁇ 300 ppm.
- titanium is known to be an element having an effect of accelerating the polycondensation reaction of a low-order condensate.
- Tianium alkoxide, titanium tetrachloride, titanyl oxalate, orthotitanic acid, etc. are used as polycondensation catalysts. It is well known, and many studies have been made to utilize such a titanium compound as a polycondensation catalyst.
- Such a titanium compound has a high polymerization activity per metal weight, and is a catalyst that can reduce the amount of metal used in consideration of only the production rate of the polyester resin. That is, in order to produce a polyester resin using these compounds, the titanium compound may be used in an amount of usually from several ppm to 50 ppm as titanium atoms.
- titanium compounds have high polycondensation activity per metal weight, they also have a strong tendency to cause undesirable polyester decomposition reactions, causing coloring of the resin in the polycondensation reaction step and low molecular weight compounds in the melt molding step.
- the resin quality is degraded due to by-products of the resin or a decrease in the molecular weight.
- polyester resins produced using these titanium compounds as polycondensation catalysts have low stability, and the formation of acetate and a decrease in molecular weight due to thermal decomposition during melt molding are lower than those of conventional antimony compounds.
- polyester resin in order to reduce the deterioration of resin quality due to thermal decomposition during melt molding of polyester resin, reducing the use amount of the above-mentioned titanium compound, Since the polycondensation rate of the polyester resin is lower than that of polyester resins produced using conventional antimony compounds and germanium compounds as polycondensation catalysts, the polymerization time is prolonged or polymerization at high temperatures is required. If the production cost of polyester resin becomes high, a ray problem will occur.
- the present inventors have conducted intensive studies on polyester resins in view of the technical background as described above, and found that they satisfy a specific polymerizable parameter, and satisfy a specific stability parameter and a metal content parameter. Polyester resin to be used.
- the present inventors furthermore (1) contain titanium, oxygen, carbon, hydrogen and, if necessary, an alkali metal, have a Ti—O—C bond, and have a maximum solubility in ethylene glycol of titanium.
- a polyester production catalyst comprising a solid titanium-containing compound and an alkali metal compound in a specific amount or more in terms of atoms, wherein the catalyst has a molar ratio of alkali metal atoms to titanium atoms (alkali metal titanium).
- a polyester production catalyst comprising a solid titanium-containing compound in a specific amount or more in terms of atoms and having a molar ratio of an alkali metal atom to a titanium atom in the catalyst in a specific range. It has been found that, when used, it is possible to polycondensate aromatic dicarboxylic acids and aliphatic diols at a high production rate with a small amount of metal used, and to improve the stability of the produced polyester resin. The present invention has been completed.
- the following polyester resin and a catalyst for producing polyester a method for producing a polyester resin using the catalyst, a polyester resin obtained by the catalyst, and a hollow molded container made of the polyester resin Is provided to achieve the above-mentioned object.
- the polymerization parameter satisfies the following equation (A-1), the stability parameter satisfies the following equation (B-1), and the metal content parameter satisfies the following equation (A-1).
- V ss is the intrinsic viscosity of the polyester resin and the intrinsic viscosity of the solid-phase polycondensation of the polyester resin under a nitrogen atmosphere at 220 ° C for 2 to 12 hours. From the following formula.
- V ss . ([IV] [IV] 0 ) / ⁇
- [IV]. And [IV] denote the intrinsic viscosities (diZg) before and after the solid-phase polycondensation, respectively, and ⁇ denotes the solid-phase polycondensation time (h). )
- ⁇ ⁇ is the amount of acetaldehyde originally contained in the polyester resin, and the polyester resin is molded using an injection molding machine at a cylinder temperature of 265-275 C., molding cycle It can be obtained from the amount of acetaldehyde contained in the preform obtained by molding in 26 ⁇ 1 seconds using the following formula.
- ⁇ AA [A ⁇ ] ⁇ - [AA] 0
- [A A]. And [AA] represent the acetyl content (weight ppm) before and after the molding, respectively. )
- M represents the total amount (weight ppm) of metal atoms contained in the polyester resin.
- T can be increased to 0.84 dl Zg by solid-phase polycondensation of a polyester resin with an intrinsic viscosity of 0.64 dl / g in a nitrogen atmosphere at 220 ° C.
- the solid-state polycondensation time (h) required to increase the molecular weight is shown. ).
- HM indicates the total amount (weight ppm) of heavy metal atoms contained in the polyester resin. ”).
- the catalyst for the production of polyesters comprising: a molar ratio of alkali metal atoms to titanium atoms (alkali metal titanium) in the catalyst is in the range of 20 to 0.1.1. Polyester production catalyst.
- titanium, oxygen, carbon, hydrogen and aluminum metal beryllium, magnesium, calcium, strontium, barium, scandium, yttrium, lanthanum, Zinc metal, aluminum, nickel, niobium, tantalum, chromium, molybdenum, tungsten, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, copper, zinc, boron, aluminum, gallium
- a catalyst for producing polyester comprising:
- the titanium-containing solution is obtained by adding an alkali metal compound (b) when dissolving the solid titanium-containing compound (a) in the ethylene glycol-containing solution (c).
- the titanium-containing solution contains the dissolution aid in an amount of 1 to 50% by weight based on the ethylene glycol-containing solution (c).
- a polyester resin according to the present invention a catalyst for polyester production, a method for producing a polyester resin using the catalyst, a polyester resin obtained by the catalyst, and a hollow molded container made of the polyester resin Will be described.
- polyester resin of the present invention is a polyester resin of the present invention.
- the polymerization parameter satisfies the following equation (A_l), the stability parameter satisfies the following equation (B-1), and the metal content parameter satisfies the following equation (C-11).
- V ss Is the intrinsic viscosity of the polyester resin and the intrinsic viscosity of the solid-phase polycondensation of the polyester resin under a nitrogen atmosphere at 220 ° C for 2 to 12 hours. It is calculated using the following formula.
- V ssp ([IV] [IV] 0 ) / T
- [IV]. And [IV] 1 represent the intrinsic viscosity (dl / g) before and after the solid-phase polycondensation, respectively, and T represents the solid-state polycondensation time (h). ) (B— 1) ⁇ ⁇ ⁇ 7.0 (ppm)
- ⁇ ⁇ is the amount of acetaldehyde originally contained in the polyester resin, and the polyester resin is molded using an injection molding machine at a cylinder temperature of 265-275 ° (: It can be obtained from the amount of acetaldehyde contained in the preform obtained by molding in a cycle of 26 ⁇ 1 seconds using the following formula.
- a A [A A] [A A] o
- [AA]. And [AA] are the acetates before and after the molding, respectively. Shows the content of dehydration (ppm by weight). )
- M represents the total amount of metal atoms (weight p pm) contained in the polyester resin.
- the polymerizable parameter V ssp of the polyester resin described in the formula (A-1) is determined by subjecting the polyester resin to solid-phase polycondensation under a nitrogen atmosphere at 220 ° C. for 2 hours to 12 hours. It shows the rate of increase of the intrinsic viscosity per hour at the time.
- the solid-phase polycondensation time is shorter than 2 hours, the temperature and atmosphere in the reaction system are not stable, and the solid-phase polycondensation time is 12 hours. If it is longer, the intrinsic viscosity rise rate saturates. In either case, the linear relationship between the intrinsic viscosity and the solid-state polycondensation time is lost.
- V ss Can be considered almost constant.
- the formula (A-1) indicates that the polyester resin according to the present invention has a polymerizability equal to or higher than that of a currently manufactured industrially produced antimony compound or a germanium compound. In other words, it indicates that the polyester resin according to the present invention can be produced at a production rate equal to or higher than the case where an existing antimony compound or germanium compound is used.
- the stability parameter ⁇ AA of the polyester resin described in the formula (B-1) is as follows.
- the polyester resin is molded using an injection molding machine at a cylinder temperature of 265-275.
- C Molding cycle This shows the increase in the amount of acetate when the preform is obtained by molding in 26 ⁇ 1 second.
- the formula (B-1) indicates that the polyester resin according to the present invention has the same or greater increase in acetyl aldehyde as the polyester resin produced using an antimony compound or a germanium compound currently industrialized. Means less. Acetaldehyde is decomposed by heating during preform molding and by the action of the polycondensation catalyst contained in the polyester resin.
- the polyester resin is used as a beverage container, it causes the beverage to have an unpleasant odor.
- the polyester resin according to the present invention can produce a beverage-filled container with a quality equal to or higher than that obtained when an existing antimony compound or a germanium compound is used.
- the metal content parameter M of the polyester resin described in the formula (C-11) indicates the total amount of metal atoms contained in the polyester resin. As described in the technical background of the invention, it is desired to reduce the metal content in the polyester resin as much as possible from the viewpoint of reducing the load on the global environment. Also, as described in the section of the technical background of the invention, the polyester resin produced using an antimony compound or a germanium compound that is currently industrialized has metal atoms of usually 50 to 300. It is contained in ppm.
- the formula (C-11) shows that the polyester resin according to the present invention has a metal content equal to or less than that of a polyester resin produced using an antimony compound or a germanium compound currently industrialized. are doing. That is, it shows that the polyester resin according to the present invention has environmental safety equal to or higher than that of the case where an existing antimony compound or germanium compound is used.
- the polyester resin according to the present invention preferably further has a polycondensation time satisfying the following formula (A-2).
- T increases the molecular weight to 0.84 dl Zg by performing solid phase polycondensation of polyester resin with an intrinsic viscosity of 0.64 dl / g in a nitrogen atmosphere at 220 ° C. Shows the solid-phase polycondensation time required for this.
- the metal content parameter of the produced polyester resin satisfies the following formula (C-12).
- HM does not depend on the total amount (weight ppm) of heavy metal atoms contained in the polyester resin.
- Group 4 elements excluding titanium, Group 4 elements, all elements from Groups 5 to 12, Group 13 elements excluding boron and aluminum, Group 3 elements excluding carbon and silicon, Group 4 elements excluding nitrogen, phosphorus, and arsenic 1 Group 5 elements, except for oxygen, sulfur and selenium.
- Titanium, oxygen, carbon, hydrogen and alkali metal, having a Ti-O-C bond, and 150 It consists of a solid titanium-containing compound having a maximum solubility in ethylene glycol which is at least 1,000 ppm in terms of titanium atoms when dissolved in ethylene glycol, or
- the solid titanium-containing compound (a) forming the catalyst for producing polyester according to the present invention contains titanium, oxygen, carbon and hydrogen, and if necessary, an alkali metal, and has a Ti—O—C bond. Have.
- examples of the alkali metal include Li, Na, K, Rb and Cs.
- the solid titanium-containing compound (a) contains 5 to 50% by weight of titanium, preferably (5 to 40)% by weight, and oxygen (35 to 75)% by weight, preferably (40 to 60%). ) Weight. /. 1 to 35% by weight of carbon, preferably (5 to 25) weight %, Preferably 1 to 10% by weight, preferably (1 to 6)% by weight of hydrogen.
- Solid titanium compound ( a ) strength If titanium, oxygen, carbon and hydrogen are contained in the above range, the solubility of the solid titanium-containing compound is good and the preferred c alkali metal is the solid titanium-containing compound (a) It is desirable that the compound be contained in an amount in the range of 20Zl to 0.171, preferably 10/1 to 0.11, in terms of the molar ratio to titanium atoms (alkali metal titanium).
- the molar ratio between the titanium atom in the solid titanium-containing compound (a) and the alkali metal atom is within the above range, a polyester resin having high polymerization activity and excellent quality can be produced, and the solubility is high. Also improve. If the content of the alkali metal atom is below the above range, the effect on the activity and quality due to the alkali metal content may not be sufficiently obtained. If the ratio exceeds the above range, the activity may be reduced.
- the solubility of the solid titanium-containing compound is good, which is preferable.
- the solid titanium-containing compound ( a ) has a weight ratio (T i / C) of titanium atom to carbon atom in the compound in the range of 50 to 1, preferably 25 to 2.
- T i / C weight ratio of titanium atom to carbon atom in the compound in the range of 50 to 1, preferably 25 to 2.
- the content of titanium in the solid titanium-containing compound (a) can be measured by, for example, ICP analysis, and the content of other elements can be measured by, for example, elemental analysis.
- the fact that the solid titanium-containing compound (a) has a Ti— ⁇ C bond can be confirmed by elemental analysis, EXAFS analysis, and 13 C-NMR analysis.
- the solid titanium-containing compound is dissolved in ethylene glycol while heating at 150 ° C.
- the maximum solubility in ethylene glycol is 1 OOO ppm or more, preferably 1500 ppm or more, more preferably 2000 ppm or more in terms of titanium atoms.
- the maximum solubility of the solid titanium-containing compound (a) in ethylene glycol was determined by using only ethylene glycol as a solvent and adding 100 g of ethylene glycol under heating at 150 ° C. The titanium compound (a) is dissolved, and the transparency of the solution is measured with a haze meter. The amount exceeding 10% is confirmed, and the maximum solubility is determined from the amount of the solid titanium-containing compound at that time. It is preferable that the solid titanium-containing compound ( a ) has an average particle diameter of 1 to 30 m, preferably 1.5 to 20 ⁇ m.
- the solubility of the solid titanium-containing compound is good, which is preferable.
- the solid titanium-containing compound (a) has a crystallinity derived from the structure of anatase-type titanium dioxide calculated from an X-ray diffraction pattern whose 2 2 (diffraction angle) is in the range of 18 ° to 35 °. It is preferably 50% or less. When the crystallinity is 50% or less, the catalytic activity is excellent, and the solubility of the solid titanium-containing compound is good, which is preferable.
- the solid titanium-containing compound (a) may contain elements other than titanium, oxygen, carbon, and hydrogen (hereinafter, also simply referred to as “other elements”). , Beryllium, magnesium, calcium, strontium, cerium, scandium, yttrium, lanthanum, zirconium, norphnemium, nonadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese , Iron, ruthenium, cobalt, rhodium, nickel, palladium, copper, zinc, boron, aluminum, gallium At least one element selected from the group consisting of silicon, germanium, germanium, tin, and antimony oxide. Of these, magnesium is preferred. Two or more of these other elements may be contained in the solid titanium-containing compound.
- the solid titanium-containing compound (a) containing another element has a molar ratio (M / T i) of titanium (T i) to the other element (M) of the compound (a) of 1/50. 1-5 0/1, preferred properly the l / / 4 0 to 4 0Z l, more preferably preferably in the range of 1 Bruno 3 0-3 0 Bruno 1.
- the catalyst activity is excellent, and the solubility of the solid titanium-containing compound is adversely affected. It is preferable because there is no such material.
- the solid titanium-containing compound (a) can be used as a titanium-containing solution by dissolving in an ethylene glycol-containing liquid (c) as described later.
- the solid titanium-containing compound (a) does not contain an alkali metal compound, it can be used in combination with the alkali metal compound (b) as a catalyst for producing polyester.
- the solid titanium-containing compound (a) contains an alkali metal, it can be used alone or in combination with the alkali metal compound (b) as a catalyst for producing polyester.
- the compound (II) described below may be used in combination as a catalyst for polyester production.
- Alkali metal compounds (b) forming the catalyst for polyester production according to the present invention include alkali metal simple substances, alkali metal hydrides, alkali metal hydroxides, alkali metal alkoxide compounds, alkali metal alkoxide compounds.
- Halogenated compounds carbonic acid, nitric acid, nitrous acid, sulfuric acid, sulfurous acid, organic sulfonic acid, phosphoric acid, phosphorous acid, hypophosphorous acid, metaphosphoric acid, polyphosphoric acid, organic phosphonic acid, Group consisting of organometallic salts of acids selected from organic phosphinic acid, boric acid, aluminate, titanic acid, citric acid, fatty acids, aromatic carboxylic acids, hydroxycarboxylic acids, and amino acids At least one type of metallization selected It is a compound.
- alkali metal simple substance examples include L i, N a, K, R b, and C s.
- alkali metal hydride examples include LiH, NaH, KH, RbH, and CsH.
- metal hydroxide examples include lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, and cesium hydroxide.
- alkali metal alkoxide compound examples include sodium methoxide, sodium methoxide and the like.
- alkali metal halide examples include lithium fluoride, sodium fluoride, potassium fluoride, rubidium fluoride, cesium fluoride, lithium chloride, sodium chloride, and lithium chloride.
- alkali metal compounds (b) sodium hydroxide, water Potassium oxide, sodium methoxide, sodium acetate, sodium stearate and the like are preferable.
- alkali metal compounds (b) can be used alone or in combination of two or more.
- the alkali metal compound (b) has a molar ratio of alkali metal in the alkali metal compound (b) to titanium in the solid titanium-containing compound (a) or in the titanium-containing solution (alkali metal Z titanium).
- the solid titanium-containing compound (a) contains an alkali metal
- the molar ratio to titanium in the medium or in the titanium-containing solution (titanium metal) is in the range of 20 to 1 to 0.1 Z1, preferably 10 to 0.1 Z1. It is desirable to use such an amount.
- the molar ratio of the titanium atom in the solid titanium-containing compound (a) or the titanium-containing solution to the alkali metal atom is within the above range, it is possible to produce a polyester resin of high quality with high polymerization activity. And improve solubility. If the amount of the alkali metal compound (b) is less than the above range, the effect on the activity and quality by using the alkali metal compound (b) may not be sufficiently obtained. On the other hand, if it exceeds the above range, the activity may be reduced.
- the compound (II) is a group consisting of beryllium, magnesium, calcium, strontium, cerium, boron, aluminum, gallium, manganese, konore, zinc, germanium, antimony and phosphorus. It is a compound of at least one element that is more selected.
- the compounds of the elements include fatty acid salts such as acetates of these elements, and the like. Preferred are carbonates, sulfates, nitrates, chlorides and other halides of these elements, acetyl acetate toners of these elements, oxides of these elements, etc. Acetate or carbonate.
- the phosphorus compound is a phosphate of at least one metal selected from transition metals of the first and second groups of the periodic table, zirconium, hafnium, and aluminum. And phosphite.
- Preferred specific compounds of the compound (II) used as required in the present invention include the following.
- Examples of the aluminum compound include aluminum salts of fatty acids such as aluminum acetate, aluminum carbonate, aluminum chloride, and acetyl acetate salts of aluminum. Particularly preferred are aluminum acetate and aluminum carbonate.
- the barium compound examples include a barium salt of a fatty acid such as barium acetate, barium carbonate, barium chloride, and acetyl acetate salt of barium, and in particular, barium acetate or barium carbonate. preferable.
- a barium salt of a fatty acid such as barium acetate, barium carbonate, barium chloride, and acetyl acetate salt of barium, and in particular, barium acetate or barium carbonate. preferable.
- cobalt compound examples include a fatty acid cobalt salt such as cobalt acetate, cobalt carbonate, cobalt chloride, and an acetyl acetate salt of cobalt. Particularly preferred is cobalt acetate or cobalt carbonate.
- magnesium compound examples include magnesium salts of fatty acids such as magnesium acetate and the like, magnesium carbonate, magnesium chloride, and acetyl acetate salts of magnesium. Particularly preferred are magnesium acetate and magnesium carbonate.
- manganese compound examples include fatty acid manganese salts such as manganese acetate, manganese carbonate, manganese chloride, and manganese acetyl acetate salt, and manganese acetate or manganese carbonate is particularly preferable.
- Examples of the stonium compounds include strontium salts of fatty acids such as strontium acetate, strontium carbonate, strontium chloride, and acetylacetonate salt of strontium, and particularly strontium acetate. Alternatively, strontium carbonate is preferred.
- Examples of the zinc compound include zinc salts of fatty acids such as zinc acetate, zinc carbonate, zinc chloride, zinc acetyl acetate, and the like, and zinc acetate or zinc carbonate is particularly preferable.
- germanium compound examples include germanium dioxide, germanium acetate, and the like.
- antimony compound examples include antimony dioxide and antimony acetate.
- phosphates include lithium phosphate, lithium dihydrogen phosphate, dilithium hydrogen phosphate, sodium phosphate, and sodium dihydrogen phosphate.
- sodium phosphate, sodium phosphate dihydrogen, sodium phosphate sodium, potassium phosphate, potassium dihydrogen phosphate, and phosphate Dipotassium hydrogen is preferably used.
- the phosphite is at least one selected from alkali metals, alkaline earth metals, transition metals in the fourth period of the periodic table, zirconium, hafnium, and aluminum.
- metal phosphite is used, specifically, lithium phosphite, sodium phosphite, potassium phosphite, strontium phosphite, and lithium phosphite.
- magnesium compounds such as magnesium carbonate and magnesium acetate
- calcium compounds such as calcium carbonate and calcium acetate
- zinc compounds such as zinc chloride and zinc acetate are preferable.
- These compounds (II) can be used alone or in combination of two or more.
- Such a compound (II) is prepared by converting the titanium (T i) in the solid titanium-containing compound (a) or the titanium-containing solution to the metal atom (M) in the compound (II) into a molar ratio (M / T i), used in an amount in the range of 1 // 50 to 50/1, preferably 1/40 to 40/1, more preferably 1/30 to 30/1 It is desirable.
- a phosphorus compound such as a phosphate or a phosphorous acid is used, the value is calculated in terms of metal atoms contained in the phosphorus compound.
- the effect of improving activity by using (I) is sufficiently obtained. If the amount of the compound ( ⁇ ) is less than the above range, the effect may not be obtained. Further, when the ratio exceeds the above range, the quality of the obtained polyester resin may be deteriorated.
- titanium (T i) in the solid titanium-containing compound (a) or the titanium-containing solution and Mg atoms in the magnesium compound Weight ratio (Mg / T i) force S 0.01 or more, preferably 0.06 to: 10 and particularly preferably 0.06 to 5 Is also desirable.
- Mg / T i weight ratio
- the magnesium compound is used in such a range, the resulting polyester resin has excellent transparency.
- the solid titanium-containing compound (a) which forms the catalyst for producing polyester according to the present invention is, for example, a hydrolyzate (h-1) obtained by hydrolyzing a titanium halide or a titanium alkoxide. It can be obtained by dehydration and drying in the coexistence of a valent alcohol.
- titanium halide compound a compound in which at least one bond between a titanium atom and a halogen atom is present in the molecule is used.
- examples thereof include titanium tetrahalides such as titanium tetrachloride, titanium tetrabromide, and titanium tetraiodide; titanium trihalides such as titanium trichloride; dihalogenates such as titanium dichloride; and titanium monohalides.
- the titanium halide may be diluted with water up to about twice before use.
- Specific examples of the titanium alkoxide include titanium tetrabutoxide, titanium trisopropoxide, and the like.
- the method for hydrolyzing the titanium halide or titanium alkoxide is not particularly limited.
- a method of contacting a gas containing titanium alkoxide with a gas containing water vapor may, for example, be mentioned.
- the hydrolysis method is not particularly limited as described above, but in any case, it is necessary to allow a large excess of water to act on the titanium halide or the titanium alkoxide to completely advance the hydrolysis. If the hydrolysis does not proceed completely and the resulting hydrolyzate becomes a partial hydrolyzate as described in JP-B-51-194747, a polycondensation catalyst is used. Activity may not be sufficient.
- the temperature at which the hydrolysis is carried out is usually 100 ° C. or lower, preferably in the range of 0 to 70 ° C.
- the hydrolyzate of titanium halide or titanium alkoxide (h-1) obtained by the above-mentioned hydrolysis is a gel of hydrous hydroxide also called orthotitanic acid at this stage.
- the hydrous hydroxide gel is dehydrated and dried in the presence of a polyhydric alcohol, as described later, to obtain a solid titanium-containing compound (a).
- a titanium halide When a titanium halide is used as a raw material, it is desirable to adjust the pH of the solution containing the hydrolyzate (h-1) to 2 to 6 before dehydration and drying.
- a method of once adjusting the pH to 2 to 6 with an acid after making it basic with a base, or a method containing a solution containing a hydrolyzate (h-1) directly with a base is used.
- the method of once adjusting the pH to 2 to 6 with an acid after making it basic with a base is not particularly limited, and examples thereof include ammonia, sodium hydroxide, potassium hydroxide, and sodium carbonate.
- the pH may be temporarily adjusted to 9 to 12 using tritium, potassium carbonate, or the like, and then adjusted to 2 to 6 using acetic acid, nitric acid, or the like.
- the method for directly adjusting the pH of the solution containing the hydrolyzate (h-1) to 2 to 6 with a base is not particularly limited. Examples thereof include ammonia, sodium hydroxide, and hydroxide.
- the pH may be adjusted to pH 2 to 6 at which the titanium compound is precipitated by using potassium, sodium carbonate, potassium carbonate, or the like.
- the temperature at which the pH of the solution containing the hydrolyzate (h-1) is adjusted is usually 50 ° C. or lower, preferably 40 ° C. or lower.
- a precipitate is produced by adjusting the pH of the solution containing the hydrolyzate (h-1) to 2 to 6.
- the dehydration step can be performed in a short time. Further, the base-derived nitrogen and the like hardly remain in the catalyst, and the activity as a polycondensation catalyst and the deterioration of the quality of the produced polyester resin due to this are reduced.
- the solid titanium-containing compound (a) forming the catalyst for producing polyester according to the present invention comprises a compound of at least one element selected from titanium halide or titanium alkoxide and another element or a precursor thereof. body (Hereinafter sometimes referred to as “compounds of other elements”).
- a hydrolyzate (h-2) obtained by hydrolyzing a mixture with (h-2) can also be obtained by dehydrating and drying in the presence of a polyhydric alcohol. .
- Examples of the compound of another element include a hydroxide of the above element. These compounds of other elements can be used alone or in combination of two or more.
- the method for hydrolyzing a mixture of a titanium halide or a titanium alkoxide and a compound of another element is not particularly limited.
- a method of adding a titanium alkoxide, 2 A method of adding a titanium halide or a mixture of a titanium alkoxide and a compound of another element to water, 3
- ⁇ a method of adding water in which a compound of another element is dissolved or suspended Through a gas containing vapor of titanium halide or titanium alkoxide;
- a method of contacting a gas containing the vapor of the compound with a gas containing the water vapor may be used.
- the hydrolysis method is not particularly limited as described above, but in any case, a large excess of water acts on a mixture of a titanium halide or a titanium alkoxide and a compound of another element to carry out the hydrolysis. It is necessary to make progress. Hydrolysis obtained without complete hydrolysis When the hydrolyzate is partially hydrolyzed, the activity as a polycondensation catalyst may not be sufficient.
- the molar ratio (M / T i) between titanium (T i) in the titanium halide or titanium alkoxide and the other element (M) in the compound of another element is 1-5. It is desirable to be in the range of 0 to 50/1.
- the temperature at which the hydrolysis is performed is usually 100 ° C. or lower, and preferably in the range of 0 to 70 ° C.
- the hydrolyzate (h-2) of the mixture of the titanium halide or titanium alkoxide obtained by the above hydrolysis and a compound of another element is a hydrated hydroxide gel also called orthotitanic acid at this stage. It is a hydrous composite hydroxide gel containing The gel is dehydrated and dried in the coexistence of a polyhydric alcohol, as described later, to prepare a solid titanium-containing compound (a).
- the pH of the solution containing the hydrolyzate (h-2) is preferably adjusted.
- the method for adjusting the pH of the solution containing the hydrolyzate (h-2) is as follows. — The same method as adjusting the pH of the solution containing 1) can be used.
- a precipitate is formed by adjusting the pH of the solution containing the hydrolyzate (h-2) to 2 to 6.
- the dehydration step can be performed in a short time. Further, base-derived nitrogen and the like are less likely to remain in the catalyst, and the activity as a polycondensation catalyst and the quality of the produced polyester resin are less likely to be reduced.
- the solid titanium-containing compound (a) forming the catalyst for producing polyester according to the present invention includes a hydrolyzate (h-1) obtained by hydrolyzing a titanium halide or a titanium alkoxide, and other components.
- a hydrolyzate (h-3) obtained by hydrolyzing a compound of the element Can be obtained by dehydration and drying in the presence of a polyhydric alcohol.
- the method for hydrolyzing a compound of another element or a precursor thereof is not particularly limited.
- a method for preparing the above-mentioned hydrolyzate (h-1) instead of titanium halide or titanium alkoxide, another method may be used.
- the procedure can be performed in the same manner except that a compound of the element or its precursor is used. ⁇ Hydrolysis of a compound of another element or its precursor yields a solution containing the hydrolyzate (h-3).
- the hydrolyzate (h-1) and the hydrolyzate (h-3) are the titanium (Ti) in the hydrolyzate (h-1) and the other elements in the hydrolyzate (h-3) It is preferable to mix them so that the molar ratio (EZT i) to (M) is in the range of 1/50 to 50 Z 1.
- the mixture is dehydrated and dried in the presence of a polyhydric alcohol, as described later, to obtain a solid titanium-containing compound (a).
- the pH of the solution containing the hydrolyzate (h-1) and the hydrolyzate (h-3) is preferably adjusted, and the solution containing the hydrolyzate (h-1) and the hydrolyzate (h-13)
- Examples of the method for adjusting the pH include the same method as the method for adjusting the pH of the solution containing the hydrolyzate (h-11).
- a precipitate is formed by adjusting the pH of the solution containing the hydrolyzate (h-1) and the hydrolyzate (h-3) to 2 to 6.
- the dehydration step can be shortened. Can be done with In addition, base-derived nitrogen and the like are less likely to remain in the catalyst, so that the activity of the polycondensation catalyst and the quality of the produced polyester resin are less likely to be reduced.
- a dihydric alcohol such as ethylene glycol
- Alcohol trihydric alcohols such as glycerin.
- dihydric alcohols and trihydric alcohols are preferable, and ethylene glycol and glycerin are particularly preferable.
- the hydrolyzate (h-1), (h-2) or (h_3) As a method for coexisting a polyhydric alcohol when dehydrating and drying the hydrolyzate (h-1), (h-2) or (h_3), for example, the hydrolyzate (h-1), (h-1), (h -2) or (h-3) in an amount of 1 to 90% by weight, preferably 2 to 80% by weight, particularly preferably 5 to 50% by weight. /.
- a method of drying the slurry after holding there are a method of drying after solid-liquid separation, a method of using a spray drier as a granulation dryer, and the like.
- a spray drier is preferable. .
- a slurry containing (h-2) or (h-3) is sprayed into an atmosphere of usually 80 to 250 ° C, preferably 120 to 200 ° C, to form a solid.
- the titanium-containing compound (a) can be obtained.
- the solid titanium-containing compound (a) thus obtained preferably has a particle size in the range of 1 to 30 ⁇ m.
- the solid titanium-containing compound (a) varies depending on the type and concentration of the coexisting polyhydric alcohol, the drying method, and the degree of drying.
- the content of titanium in these solid titanium-containing compounds (a) is as follows. Usually it is in the range of 5 to 50% by weight. If it exceeds 50% by weight, the effect of impregnating with a polyhydric alcohol may hardly be exhibited, and 5% by weight. /. If it is less than 1, the residual amount of the polyhydric alcohol becomes too large, and a uniform solid titanium-containing compound (a) may not be obtained.
- the molar ratio of titanium (T i) in the solid titanium-containing compound (a) to the other element M (MZT i) force ⁇ ⁇ ⁇ ⁇ It is preferably from 1/40 to 40/1, and more preferably from 130 to 30/1.
- the other element is used.
- the effect of activity improvement is sufficiently obtained. If the amount of other elements used falls below the above range, the effect may not be obtained. If the ratio is more than the above range, the quality of the obtained polyester resin may be deteriorated.
- the content of titanium in the solid titanium-containing compound (a) can be measured by, for example, ICP analysis.
- the solid titanium-containing compound (a) When a titanium halide is used as a raw material, the solid titanium-containing compound (a) has a halogen element content of usually from 0 to 100,000 ppm, preferably from 0 to 100 ppm.
- the solid titanium-containing compound (a) can be used as a catalyst by dissolving it in an ethylene glycol-containing liquid ( c ) containing ethylene glycol, and can be used as a catalyst.
- a basic compound such as the alkali metal compound (b).
- the heating temperature is usually 100 to 2 0 0. C, preferably in the range from 110 to 195 ° C.
- the alkali metal compound (b) When the alkali metal compound (b) is used, the alkali metal compound / titanium is used in an amount such that the alkali metal / titanium ratio is in the range of 21 to 0.1 / 1 in a molar ratio with respect to titanium in the solution.
- the alkali metal / titanium ratio is within the above range, a polyester resin of high quality with high polymerization activity can be produced, and the solubility is also improved. If the amount of the alkali metal compound (b) is less than the above range, the effect on the activity and quality by using the alkali metal compound (b) may not be sufficiently obtained. If the ratio exceeds the above range, the activity may be reduced.
- a dissolution aid is included as necessary.
- Ethylene glycol-containing liquid (c) can be used. If the alkali metal compound (b) is not used when dissolving the solid titanium-containing compound (a) in the ethylene glycol-containing liquid (c), if necessary, a solubilizing agent and / or acid or acid may be used.
- the ethylene glycol-containing liquid (c) containing the component can be used. .
- dissolution aid examples include glycerin, trimethylolpropane, propylene glycol, pentaerythritol, and sorbitol, and glycerin or trimethylolpropane is preferable.
- Solubilizers from 1 to 5 0 wt 0/0 of the ethylene glycol-containing solution (c), preferably used in amounts UNA by a 1-2 5 wt%.
- the acid component examples include organic sulfonic acids such as sulfuric acid and para-toluenesulfonic acid; and organic carboxylic acids such as oxalic acid, acetic acid, and citric acid. Sulfuric acid and organic sulfonic acids are preferred.
- the acid component is used in an amount of 0.1 to 20% by weight, preferably 0.1 to 10% by weight, based on the solution containing ethylene dalicol.
- the solid titanium-containing compound (a) contains ethylene glycol.
- a titanium-containing solution which is a solution dissolved in the liquid (C), is prepared.
- This titanium-containing solution is preferably transparent, and has a HAZE value of 30% or less, preferably 20% or less, more preferably 10% or less, as measured by a haze meter according to the method described below.
- the HAZE value of the titanium-containing solution is within the above range, addition at the time of polymerization is easy. If the HAZE value exceeds the above range, cloudy components may precipitate when left for a long time.
- the content of titanium derived from the solid titanium-containing compound (a) is usually 500 to 100,000, preferably 3,000 to 100,000. It is in the range of 0.000 ppm, more preferably in the range of 50,000 to 500,000 ppm.
- the content of titanium in the titanium-containing solution can be measured, for example, by an ICP analysis method.
- the amount of the solvent added to the polymerization reactor when the catalyst is added to the polymerization reactor affects the polymerization. It does not become excessive, and the dissolution of the solid titanium-containing compound (a) in the reaction system does not become difficult.
- the titanium-containing solution preferably has a water content in the range of 0.05 to 15.0% by weight, preferably 0.05 to 10% by weight.
- the solubility is good and the storage stability is good, which is preferable.
- the method for producing a polyester resin of the present invention is a method for producing a polyester resin by polycondensing an aromatic dicarboxylic acid or an ester-forming derivative thereof with an aliphatic diol or an ester-forming derivative thereof in the presence of the above-mentioned catalyst for producing polyester. To manufacture.
- an example will be described.
- the method for producing a polyester resin according to the present invention comprises the steps of: Alternatively, an ester-forming derivative thereof and an aliphatic diol or an ester-forming derivative thereof are used as raw materials.
- aromatic dicarboxylic acid used in the present invention examples include aromatic dicarboxylic acids such as terephthalic acid, phthalic acid, isophthalic acid, naphthalenedicarboxylic acid, diphenyldicanoleponic acid, and diphenoxyethanedicarboxylic acid. No.
- aliphatic diols examples include aliphatic alcohols such as ethylene glycol, trimethylene glycol, propylene glycol cone, tetramethylene glycol cone, neopentyl glycol cone, hexamethylene glycol cone, and dodecamethylene glycol cone. Call.
- adipic acid in addition to aromatic dicarboxylic acids, adipic acid, sebacic acid, azelaic acid, aliphatic dicarboxylic acids such as decanedicarboxylic acid, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid, etc. It can be used as a raw material.
- both the aliphatic diol, alicyclic glycol such as cyclohexane dimethanol cyclohexane, bisphenol, high Dorokinon, 2, 2 - bis (4 - - arsenide de Rokishie Tokishifueniru) Purono ⁇ aromatic such as 0 emissions such A diol or the like can be used as a raw material.
- trimesic acid trimethylolethane
- trimethylonoleprono ⁇ polyfunctional compounds such as trimethylonolemethane, pentaerythritol, and the like can be used as raw materials.
- an aromatic dicarboxylic acid or its ester-forming derivative and an aliphatic diol or its ester-forming derivative are esterified.
- a slurry containing an aromatic dicarboxylic acid or an ester-forming derivative thereof and an aliphatic diol or an ester-forming derivative thereof is prepared.
- Such slurries contain aromatic dicarboxylic acids or their esters.
- 1.005 to 1.4 moles, preferably 1.01 to 1.3 moles, of aliphatic diol or its ester-forming derivative is contained per 1 mole of the acidic derivative.
- This slurry is continuously supplied to the esterification reaction step.
- the esterification reaction is preferably carried out using a device in which two or more esterification reaction groups are connected in series, and under conditions where ethylene glycol is refluxed, water produced by the reaction is removed outside the system by a rectification column. While doing.
- the esterification reaction step is usually performed in multiple stages, and the first stage of the esterification reaction usually has a reaction temperature of 240 to 270 ° C, preferably 245 to 265 ° C, and a pressure of 0.02 ⁇ 0.3MPa G (0.ZS kg / Zcn ⁇ G, preferably 0.05 ⁇ 0.2MPa G (0.SS kg / cn ⁇ G)
- the final stage of the esterification reaction usually has a reaction temperature of 250 to 280 ° C, preferably 255 to 275 ° C, and a pressure of 0 to 0.15MPa G ( 0 to: 1.5 kg / cm 2 G), preferably 0 to 0.13 M PaG (0 to l. SkgZcn ⁇ G).
- the first and second stage esterification reaction conditions are respectively within the above ranges, and when the esterification reaction is carried out in three or more stages, the second stage
- the esterification reaction conditions from to the stage before the final stage may be any conditions between the above-mentioned reaction conditions of the first stage and the final stage.
- the reaction temperature of the second-stage esterification reaction is usually 245 to 275 ° C, preferably 250 to 270 ° C. Is C, the pressure is usually 0 ⁇ 0. 2MP a G (0 ⁇ 2 kg / cm 2 G), preferably 0. 0 2 ⁇ 0. 1 5MP a G (0. 2 ⁇ 1. 5 k gZ cm 2 G) Then.
- esterification reaction rate in each of these stages is not particularly limited, it is preferable that the degree of the increase in the esterification reaction ratio in each stage is smoothly distributed. Further, in the final stage esterification reaction product, It is usually desirable to reach 90% or more, preferably 93% or more.
- esterification reaction product low-order condensate of the aromatic dicarboxylic acid and the aliphatic diol is obtained, and the number-average molecular weight of the low-order condensate is about 500 to 500,000. is there.
- the low-order condensate obtained in the above esterification step is then supplied to a polycondensation (liquid-phase polycondensation) step.
- the low-order condensate obtained in the esterification step is reduced under reduced pressure at a temperature not lower than the melting point of the polyester resin (usually 250 to Polycondensation by heating to 280 ° C).
- This polycondensation reaction is desirably carried out while distilling unreacted aliphatic diol out of the reaction system.
- the polycondensation reaction may be performed in one stage or may be performed in a plurality of stages.
- the first stage polycondensation reaction has a reaction temperature of 250 to 290 ° C., preferably 260 to 280 ° C.
- Pressure is 0.07 to 0.03MPaG (500 to 20Torr), preferably 0.03 to 0.04MPaG (200 to 30Torr)
- the polycondensation reaction in the final stage is carried out at a reaction temperature of 265 to 300 ° C, preferably 270 to 295.
- C pressure is 1 ⁇ 0.01kPaG (10 ⁇ 0.1Torr), preferably 0.7 ⁇ 0.07kPaG (5 ⁇ 0.5Torr) Done below.
- the polycondensation reaction between the second stage and the last stage before the last stage is performed by combining the reaction conditions of the first stage with the reaction conditions of the last stage. It is performed under the conditions between.
- the second-stage polycondensation reaction usually has a reaction temperature of 260 to 295 ° (: preferably 270 to 285 °). C, at a pressure of 7 to 0.3 kPaG (50 to 2 Torr), preferably 5 to 0.7 kPaG (40 to 5 Torr).
- the solid titanium-containing compound (a) or titanium Of the metal-containing solution in an amount of 0.001 to 0.2 mol%, preferably 0.02 to 0.1 mol%, in terms of metal atoms, based on the aromatic dicarboxylic acid unit in the lower polycondensate. It is desirable to use.
- the compound (II) When the compound (II) is used in addition to the solid titanium-containing compound (a) or the titanium-containing solution, the compound (II) is converted to a metal atom with respect to the aromatic dicarboxylate unit in the low-order condensate. It is desirable to use it in an amount of 0.001 to 0.5 mol%, preferably 0.02 to 0.3 mol% in conversion.
- the alkali metal compound (b) is an aromatic compound in the lower condensate.
- the dicarboxylic acid unit 0.1 an alkali metal atom in terms 00 1 to 0.5 mole 0/0, preferably it is desirable to use an amount of 0. 0 0 2 to 0.3 moles 0/0.
- a catalyst comprising at least one solution selected from such a solid titanium-containing compound (a) or a titanium-containing solution and, if necessary, a compound (II) and a metal or alkali metal compound (b) Should be present during the polycondensation reaction. For this reason, the catalyst may be added in any of the raw material slurry preparation step, esterification step, liquid phase polycondensation step and the like. Further, the entire amount of the catalyst may be added all at once or may be added in plural times. When the compound (II) and the metal or alkali metal compound (b) are used in combination, they may be added in the same step as the solid titanium-containing compound (a) or the titanium-containing solution, or in another step. You may.
- the polycondensation reaction is desirably performed in the presence of a stabilizer.
- a stabilizer include phosphoric acid such as trimethyl phosphate, triethyl phosphate, tri-n-butyl phosphate, trioctyl phosphate, and triphenyl phosphate.
- Esters such as triphenylphosphite, tris-dodecinolephosphite, and tris-noninolefe-diphosphite; methyl acid phosphate, ethyl acid phosphate, and isopropinoleic acid phosphate , Butyl acid Phosphate such as phosphate, dibutynolephosphate, monobutyl phosphate, dimethyl phosphate and the like, and phosphorus compounds such as phosphoric acid and polyphosphoric acid are exemplified.
- the amount of such a phosphorus compound to be added is 0.005 to 0.2 mol in terms of the phosphorus atom in the phosphorus compound with respect to the aromatic dicarboxylic acid. /. It is desirable preferably in an amount of 0.0 1 to 0.1 mol 0/0.
- [IV] is 0.40 to: 1. O dl / g, preferably 0.50 to 0.90 d 1 g.
- the intrinsic viscosity achieved in each stage except the last stage of the liquid phase polycondensation step is not particularly limited, degree smoothly distributed it is preferable Rere c of rise in intrinsic viscosity in each stage
- the intrinsic viscosity [IV] refers to the solution viscosity measured at 25 ° C after heating and dissolving 1.2 g of a polyester resin in 15 cc of 0-cloth phenol. Is calculated from
- the polyester resin obtained in this polycondensation step is usually melt-extruded and formed into granules (chips).
- the polyester resin obtained in this liquid-phase polycondensation step can be further solid-phase polycondensed as desired.
- the granular polyester resin supplied to the solid phase polycondensation step is preliminarily crystallized by heating to a temperature lower than the temperature at which solid phase polycondensation is performed, and then supplied to the solid phase polycondensation step. Is also good.
- the granular polyester resin is usually heated in a dry state to a temperature of 120 to 200 ° C, preferably 130 to 180 ° C for 1 minute to 4 hours. Can be done by In addition, such preliminary crystallization is performed by subjecting the granular polyester resin to a temperature of 12 ° to 200 ° C. in a steam atmosphere, a steam-containing inert gas atmosphere, or a steam-containing air atmosphere. Can be performed by heating for 1 minute or more.
- the pre-crystallized polyester resin desirably has a crystallinity of 20 to 50%.
- the so-called solid state polycondensation reaction of the polyester resin does not proceed by this pre-crystallization treatment, and the intrinsic viscosity of the pre-crystallized polyester resin is almost the same as the intrinsic viscosity of the polyester resin after liquid phase polycondensation.
- the difference between the intrinsic viscosity of the pre-crystallized polyester resin and the intrinsic viscosity of the polyester resin before the pre-crystallization is usually 0.06 dl / g or less.
- the solid-state polycondensation step comprises at least one stage, the temperature is 190 to 230 ° C, preferably 195 to 22 ° C, and the pressure is 98 to 0. a G (lkg Z cm 2 G to lOT orr), preferably from normal pressure to 0.01MPaG (lOOT orr) under an inert gas atmosphere such as nitrogen, argon, carbon dioxide, etc. Done. Nitrogen gas is preferred as the inert gas used.
- the granular polyester resin obtained through such a solid-phase polycondensation step may be subjected to a water treatment, for example, by a method described in Japanese Patent Publication No. 7-64920. This is performed by bringing the polyester resin into contact with water, steam, steam-containing inert gas, steam-containing air, or the like.
- the intrinsic viscosity of the granular polyester resin thus obtained is usually 0.60 dl Zg or more, preferably 0.60 to 1.000 dl Zg, more preferably 0.75 to 0. 9 5 dl Z g is desirable.
- the polyester resin production process including the esterification step and the polycondensation step as described above can be performed by any of a batch system, a semi-continuous system, and a continuous system.
- the catalyst for producing a polyester according to the present invention in particular, a catalyst comprising a solid titanium-containing compound (a) or a titanium-containing solution and a compound (II), wherein the compound (II) is a magnesium compound, is a product of polyethylene terephthalate. It is suitable as a catalyst for production.
- a catalyst comprising such a solid titanium-containing compound (a) or a titanium-containing solution and a magnesium compound for example, terephthalic acid or an ester-forming derivative thereof is used as a raw material.
- terephthalic acid or an ester-forming derivative thereof to the aromatic di- carboxylic acid 1 0 0 mole 0/0, 8 0 mole 0 /.
- it is preferably used in an amount of 90 mol% or more, and ethylene glycol or an ester-forming derivative thereof is 80 mol%, preferably 100 mol%, based on 100 mol% of aliphatic diol. It is used in such an amount as to be 90 mol% or more.
- the polyethylene terephthalate thus obtained preferably has a titanium content in the range of l to 200 ppm, particularly l to 50 ppm, and a magnesium content of:! ⁇ 200ppm, especially 1 ⁇ : preferably in the range of LOOppm.
- the weight ratio (MgZTi) of titanium and magnesium contained in the polyethylene terephthalate is 0.01 or more, preferably 0.06 to 10, particularly preferably 0.06 to 5. Is desirable.
- the polyethylene terephthalate has a chlorine content in the range of 0 to 1,000 ppm, preferably 0 to 10 0 ppm.
- Such polyethylene terephthalate is excellent in hue, particularly excellent in transparency, and has a low content of acetoaldehyde, and is particularly preferably used for a hollow molded container.
- polyester production catalyst according to the present invention As shown in the above formula (A-11), a production rate equal to or higher than the case of using an antimony compound or a germanium compound industrialized at the present time is used. Polyes in Tell resin can be produced.
- the polyester resin produced by using the polyester production catalyst according to the present invention is obtained by using an industrialized antimony compound or a germanium compound at present, and The increase in acetate aldehyde is equal or less. That is, a polyester resin for a beverage-filled container can be produced with a quality equal to or higher than that obtained when an antimony compound or a germanium compound is used.
- the metal content of the polyester resin can be reduced to 50 ppm or less as described in the formula (C-11), and an existing antimony compound or germanium compound can be used.
- Catalyst for polyester production according to the present invention it has preferably be free of antimony compounds and germanium compounds substantially as a polycondensation catalyst 0
- the polyester resin thus produced may contain conventionally known additives such as stabilizers, release agents, antistatic agents, dispersants, and coloring agents such as dyes and pigments. These additives may be added at any stage during the production of polyester, or may be added by a master batch before molding.
- the polyester resin obtained by the present invention can be used as a material for various molded articles.
- the polyester resin is used for hollow molded articles such as melt-molded hollow molded articles, sheets, films, fibers, etc. It is preferably used for a hollow molded container.
- a method of molding a hollow molded container, a sheet, a film, a fiber, or the like from the polyester resin obtained by the present invention for example, the above-mentioned polyethylene terephthalate, a conventionally known method can be adopted.
- the polyester resin is extruded from a die in a molten state to form a tubular parison, and then the parison is formed.
- a method of manufacturing a hollow molded body by blowing air after holding the son in a mold having a desired shape and mounting the mold on the mold, manufacturing a preform by injection molding from the polyester resin, and stretching the preform.
- a preform is heated to a temperature, then the preform is held in a mold having a desired shape, and then air is blown into the mold to produce a hollow molded article.
- solid-liquid separation was performed by filtration as in the washing.
- the washed titanium compound was dried at 40 ° C and 1.3 kPa (10 Torr) under reduced pressure for 20 hours to remove water, and a solid hydrolyzate (solid titanium-containing compound) was obtained. Obtained.
- the obtained solid titanium-containing compound was pulverized into particles of about 10 to 20 m before being dissolved in ethylene glycol.
- the content of metallic titanium in the solid titanium-containing compound measured by ICP analysis was 35.4% by weight.
- the solid titanium-containing compound contained titanium, oxygen, carbon and hydrogen and had a Ti—O—C bond.
- the maximum solubility in ethylene glycidyl copolymers Lumpur the solid titanium-containing compound is a 3, 0 0 0 ppm, the carbon content is 1 1.8 by weight 0/0, the weight ratio of titanium and carbon (T i / C) was 3.
- 100 g of ethylene dalicol was weighed into a 200 m1 glass flask, 0.34 g of the above solid titanium-containing compound was added thereto, and the mixture was heated at 150 ° C for 1 hour. To obtain a titanium-containing solution.
- the content of titanium in the titanium-containing solution measured by the ICP analysis method was 0.12% by weight.
- the HAZE value of this solution measured with a haze meter (ND-1001 DP, manufactured by Nippon Denshoku Industries Co., Ltd.) was 1.5%.
- the solid titanium-containing compound contained titanium, oxygen, carbon and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid hydrolyzate in ethylene glycol is 3.0000 ppm, and the carbon content is 11.6 weight. / 0 , the weight ratio of titanium to carbon (T i / C) was 3.
- the titanium content in the solid titanium-containing compound measured by ICP analysis was 30.2% by weight. /.
- the zinc content is 16.8 weight. /. Met.
- the solid titanium-containing compound contained titanium, oxygen, carbon, and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid hydrolyzate in ethylene glycol is 3.0000 ppm, and the carbon content is 10.1 weight. / 0 , the weight ratio of titanium to carbon (T i ZC) was 3.
- the precipitate was washed five times with deionized water. After the washed precipitate was immersed in water containing 10% by weight of ethylene glycol for 30 minutes, solid-liquid separation was performed by filtration as in the washing. The hydrolyzate after washing is dried at 40 ° C and 1.3 kPa (10 Torr) under reduced pressure for 20 hours to remove water, and solid hydrolyzate (solid titanium-containing compound) ) Got.
- the obtained solid titanium-containing compound was pulverized into particles of about 10 to 20 ⁇ m before use as a polycondensation catalyst.
- the metal titanium content in the solid titanium-containing compound measured by ICP analysis was 33.4% by weight, and the metal magnesium content was 3.2% by weight. /. Met. It was confirmed by elemental analysis, EXAFS analysis and 13C- NMR analysis that the solid titanium-containing compound contained titanium, oxygen, carbon and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid hydrolyzate in ethylene glycol is 3.0000 ppm, the carbon content is 11.1% by weight, and the weight ratio of titanium to carbon (T i / C ) was 3.
- the esterification reaction product (lower condensate) was continuously extracted out of the system while controlling the average residence time to be 3.5 hours.
- the number average molecular weight of the low-order condensate of et. Lenglycol and terephthalic acid obtained above was 600 to 1,300 (trimer to pentamer).
- polycondensation catalyst an ethylene glycol solution of the titanium catalyst prepared in Reference Examples 1 to 4 and an ethylene glycol solution of the aluminum metal compound prepared in Preparation Examples 1 to 10 or an undissolved solid state
- the polycondensation reaction of the lower condensate obtained above was carried out using went.
- a metal compound was added, and the phosphoric acid was converted to phosphorus atoms so as to be 6 ppm with respect to the produced polyethylene terephthalate.Then, at 285 ° C and 0.1 kPa (1 T orr), and the time required to obtain a liquid heavy polyethylene terephthalate having an intrinsic viscosity of 0.64 d 1 / g was measured.
- liquid polyethylene terephthalate was 170. After pre-crystallization, heat in a nitrogen gas atmosphere at 220 ° C until the intrinsic viscosity changes from 0.64 dl Zg to 0.84 d1 Zg. The molecular weight was increased by polymerization. The solid phase polycondensation time (h) required at this time was measured. Table 1 shows the results.
- the obtained polyethylene terephthalate after solidification was dried using a dehumidifying air drier at 170 ° (: 4 hours.
- the water content of the dried resin was 40 ppm or less.
- the dried polyethylene terephthalate was molded using Nissei ASB Machine Co., Ltd. ASB-50 at a cylinder temperature of 265-275 ° C and a molding cycle of 26 ⁇ 1 second to obtain a preform.
- Acetaldehyde content was determined by weighing 2.0 g of the sample and using a freezer mill. The sample is placed in a nitrogen-replaced vial bottle, and then the internal standard substance (acetone) and water are sealed. The vial bottle is dried at 120 ⁇ 2 ° C. After heating for 1 hour at, the supernatant was measured by gas chromatography (GC-6A, manufactured by Shimadzu Corporation).
- GC-6A gas chromatography
- the obtained solid hydrolyzate was pulverized into particles of about 10 to 20 microns before dissolving in ethylene glycol.
- the solid hydrolyzate contained titanium, oxygen, carbon and hydrogen and had a Ti-O-C bond.
- the carbon content was 0.5% by weight.
- the maximum solubility of the solid titanium-containing compound in ethylene glycol was 500 ppm.
- a polycondensation reaction was carried out in the same manner as in Example 1, except that antimony acetate, which is industrially used, was used as the catalyst. vinegar The amount of antimony acid added was converted to antimony atoms in an amount of 160 ppm with respect to the generated polyethylene terephthalate, and the amount of phosphoric acid converted to phosphorus atoms was changed to polyethylene terephthalate. To 15 ppm.
- Comparative Example 2 the amount of antimony acetate, antimony atom and conversion calculated with respect to the polyethylene terephthalate, 2 2 5 ppm and O except that sea urchin added consisting is Likewise polycondensation reaction as in Comparative Example 2 was done.
- Table 1 shows the liquid-phase polycondensation time, solid-phase polycondensation time, total amount of metal atoms (M) contained in the polyester resin, and heavy metal atoms contained in the polyester resin in Example 1 and Comparative Examples 2 and 3.
- HM Total amount
- Vssp value of polymerizable parameter
- AA intrinsic viscosity before solid-state polycondensation
- ⁇ AA intrinsic viscosity after solid-state polycondensation
- the obtained solid titanium-containing compound was pulverized into particles of about 10 to 20 m before being dissolved in ethylene glycol.
- the content of titanium metal in the solid titanium-containing compound measured in the same manner as in Reference Example 1 was 34.6% by weight.
- the solid titanium-containing compound contained titanium, oxygen, carbon, and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid titanium-containing compound in ethylene daryl was 3,000 ppm, the carbon content was 11.5% by weight, and the weight ratio of titanium to carbon (TiZC) was 3. Was.
- 200 g of ethylene glycol was weighed into a 300 m 1 glass flask, and 3.48 g of sodium hydroxide was added thereto and dissolved. After dissolution, 5.78 g of the above solid titanium-containing compound was added and dissolved by heating at 120 ° C. for 30 minutes to prepare a titanium-containing solution as a polyester production catalyst.
- the metal titanium content in this titanium-containing solution measured by ICP analysis was 0.98% by weight.
- the HAZ E value measured in the same manner as in Reference Example 1 was 1.3. /. Met.
- the obtained solid titanium-containing compound was pulverized into particles of about 10 to 20 ⁇ m before dissolving in ethylene daryl.
- the content of titanium metal in the solid titanium-containing compound measured in the same manner as in Reference Example 1 was 36.3% by weight.
- the solid titanium-containing compound contained titanium, oxygen, carbon and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid titanium-containing compound in ethylene glycol is 3.0000 ppm, and the carbon content is 11.4 weights 0 /.
- the weight ratio of titanium to carbon (T i / C) was 3.
- ethylene glycol was weighed into a 300 ml glass flask, and 3.48 g of sodium hydroxide was added thereto and dissolved. After dissolution, add 5.51 g of the above solid titanium-containing compound, and stir at 120 C for 30 minutes. The mixture was heated and dissolved for a while to prepare a titanium-containing solution as a polyester production catalyst.
- the metal titanium content in the titanium-containing solution measured by ICP analysis was 0.98 weight. /. Met.
- the HAZE value measured in the same manner as in Example 1 was 1.2%.
- the metal titanium content in the titanium-containing solution measured by the ICP analysis method was 1.
- the metal titanium content in the titanium-containing solution measured by the ICP analysis method was 1.01% by weight, and the HAZE value measured in the same manner as in Reference Example 1 was
- the content of titanium metal in this slurry was measured by an ICP analysis method in the same manner, and was found to be 1.01% by weight.
- the titanium-containing solution prepared in Reference Examples 5 to 24 and Comparative Examples 4 and 5 or the ethylene glycol solution of the titanium catalyst was used to polymerize the low-order condensate obtained in Example 1. A condensation reaction was performed.
- Table 2 shows the liquid-phase polycondensation time, the solid-phase polycondensation time, and the values of M, HM, Vssp, [AA] 0 , [AA], and ⁇ AA in Example 2 and Comparative Examples 4 and 5.
- a titanium-containing solution as a polyester production catalyst was prepared in the same manner as in Reference Example 5, except that the amount of sodium hydroxide used was changed to 0.87 g.
- the content of metallic titanium in the titanium-containing solution measured by ICP analysis was 0.98 weight. / 0 , and the HAZE value measured in the same manner as in Reference Example 1 was 1.5%.
- a titanium-containing solution as a polyester production catalyst was prepared in the same manner as in Reference Example 21 except that the amount of sodium stearate used was changed to 8.0 g.
- the metal titanium content in the titanium-containing solution measured by the ICP analysis method was 0.98% by weight, and the HAZE value measured in the same manner as in Reference Example 1 was 1.3%.
- the titanium-containing solution prepared in Reference Examples 5, 12, 15, 15, 21, 23, 25, 26 and the alkali metal prepared in Preparation Examples 11 to 17 were used.
- the polycondensation reaction of the low-order condensate obtained in Example 1 was carried out by using the ethylene dali alcohol solution or the undissolved solid state alkali metal compound in a combination shown in Table 3.
- Table 3 shows the liquid-phase polycondensation time, the solid-phase polycondensation time, and the values of M, HM, Vssp, [AA] 0 , [AA], and ⁇ in Example 3.
- the particle size distribution of the obtained solid titanium-containing compound was 0.5 to 20 ⁇ , and the average particle size was 1.
- the content of titanium metal in the solid titanium-containing compound measured in the same manner as in Reference Example 1 was 26.2% by weight, and the content of sodium metal was 25.9% by weight.
- the solid titanium-containing compound contained titanium, oxygen, carbon, and hydrogen and had a Ti—O—C bond.
- the maximum solubility of the solid titanium-containing compound in ethylene glycol is more than 1500 ppm, and the carbon content is 9.
- the weight ratio of titanium to carbon (T i / C) was 2.7% by weight.
- ethylene glycol 170 and glycerin 30 g were weighed into a 300 ml glass flask, and the above-mentioned solid titanium-containing compound was added in an amount of 7.3 g. For 30 minutes to dissolve and obtain a titanium-containing solution.
- the content of titanium in the titanium-containing solution measured by the ICP analysis method was
- the particle size distribution of the obtained solid titanium-containing compound was 0.5 to 20111, and the average particle size was 1.7 ⁇ m.
- the content of titanium metal in the solid titanium-containing compound measured in the same manner as in Reference Example 1 was 30.1% by weight, and the content of sodium metal was 14.9% by weight.
- Solid titanium-containing compound, titanium, oxygen, and this with T i one O-C bond include carbon and hydrogen, elemental analysis, was confirmed by EXAFS analysis 13 C-NMR analysis.
- the maximum solubility of the solid titanium-containing compound in ethylene glycol is 15,000 ppm, and the carbon content is 10.3 weight. / 0 , the weight ratio of titanium to carbon (T i ZC) was 2.9.
- the titanium-containing solution prepared in Reference Examples 27 and 28 and the ethylene glycol solution of Alkyri metal prepared in Preparation Examples 11 to 17 or the undissolved solid state As the polycondensation catalyst, the titanium-containing solution prepared in Reference Examples 27 and 28 and the ethylene glycol solution of Alkyri metal prepared in Preparation Examples 11 to 17 or the undissolved solid state
- the polycondensation reaction of the low-order condensate obtained in Example 1 was carried out by using the alkali metal compounds of Example 1 in combinations shown in Table 3.
- the amount of addition at that time was determined by converting the titanium-containing solution prepared in Reference Examples 27 and 28 into titanium atoms and converting the resulting solution into polyethylene terephthalate. 18 ppm, and then the ethylene glycol solution of the aluminum metal compound prepared in Preparation Examples 11 to 17 or the undissolved solid aluminum metal compound. Polyethylene terephthalate was added by adding 9 ppm of sodium and 15 ppm of potassium to polyethylene terephthalate in terms of lithium metal, and then converting phosphoric acid to phosphorus atoms.
- Example 1 And the time required to obtain a liquid heavy polyethylene terephthalate as in Example 1, the solid polycondensation time (T), and the solid aldehyde of the solid polymerized product and the preform in the same manner as in Example 1.
- the content and stability parameters ( ⁇ ) were determined.
- Table 4 shows the liquid-phase polycondensation time, the solid-phase polycondensation time, and the values of M, HM, Vssp, [AA] 0 , [AA], and ⁇ in Example 4.
- the polyester resin of the present invention has high productivity, stability, and safety.
- the polyester production catalyst according to the present invention is capable of producing a polyester resin with higher catalyst activity, higher stability, and lower metal content than germanium compounds and antimony compounds which have been conventionally used as polycondensation catalysts. As compared with the case where an antimony compound is used as a polycondensation catalyst, it is possible to obtain a polyester resin which is excellent in transparency and hue and has a low content of acetate.
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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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020047010441A KR100589970B1 (ko) | 2002-02-14 | 2003-02-13 | 폴리에스테르 수지 및 폴리에스테르 제조용 촉매, 이촉매를 이용하는 폴리에스테르 수지의 제조 방법, 이촉매에 의해 얻어지는 폴리에스테르 수지 및 이폴리에스테르 수지로 이루어지는 중공 성형 용기 |
AT03705091T ATE434637T1 (de) | 2002-02-14 | 2003-02-13 | Polyesterharz und katalysator für die polyesterherstellung, verfahren zur herstellung von polyesterharz mit dem katalysator. |
EP03705091A EP1475402B1 (en) | 2002-02-14 | 2003-02-13 | Polyester resin and catalyst for polyester production, process for producing polyester resin with the catalyst |
US10/504,529 US7300998B2 (en) | 2002-02-14 | 2003-02-13 | Polyester resin and catalyst for polyester production, process for producing polyester resin with the catalyst, polyester resin obtained with the catalyst, and hollow molded container comprising the polyester resins |
DE60328083T DE60328083D1 (de) | 2002-02-14 | 2003-02-13 | Polyesterharz und katalysator für die polyesterherstellung, verfahren zur herstellung von polyesterharz mit dem katalysator. |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
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JP2002037186 | 2002-02-14 | ||
JP2002-37186 | 2002-02-14 | ||
JP2002-133156 | 2002-05-08 | ||
JP2002133156 | 2002-05-08 | ||
JP2002-135742 | 2002-05-10 | ||
JP2002135742A JP2003082084A (ja) | 2001-06-29 | 2002-05-10 | ポリエステル製造用触媒およびこの触媒を用いるポリエステルの製造方法 |
JP2002-288986 | 2002-10-01 | ||
JP2002288986 | 2002-10-01 |
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WO2003072633A1 true WO2003072633A1 (fr) | 2003-09-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/001466 WO2003072633A1 (fr) | 2002-02-14 | 2003-02-13 | Resine polyester et catalyseur destine a la production de polyester, procede de production de cette resine polyester au moyen de ce catalyseur, resine polyester obtenue au moyen de ce catalyseur et recipient moule creux comprenant cette resine polyester |
Country Status (8)
Country | Link |
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US (1) | US7300998B2 (ja) |
EP (1) | EP1475402B1 (ja) |
KR (1) | KR100589970B1 (ja) |
CN (2) | CN101570594B (ja) |
AT (1) | ATE434637T1 (ja) |
DE (1) | DE60328083D1 (ja) |
TW (1) | TWI299047B (ja) |
WO (1) | WO2003072633A1 (ja) |
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DE60206508T2 (de) | 2001-06-27 | 2006-07-06 | Cyclics Corp. | Isolierung, formulierung und informbringen von makrocyclischen oligoestern |
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- 2003-02-13 DE DE60328083T patent/DE60328083D1/de not_active Expired - Lifetime
- 2003-02-13 WO PCT/JP2003/001466 patent/WO2003072633A1/ja active Application Filing
- 2003-02-13 CN CNB038035944A patent/CN100509912C/zh not_active Expired - Lifetime
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EP1013692A2 (en) | 1998-12-25 | 2000-06-28 | Mitsui Chemicals, Inc. | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester |
JP2001089555A (ja) * | 1999-07-19 | 2001-04-03 | Mitsui Chemicals Inc | ポリエステル製造用触媒およびポリエステルの製造方法 |
EP1114838A1 (en) | 2000-01-07 | 2001-07-11 | Atofina Chemicals, Inc. | Polyester polycondensation with titanyl oxalate catalyst and a catalyst enhancer |
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Publication number | Publication date |
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EP1475402A1 (en) | 2004-11-10 |
KR100589970B1 (ko) | 2006-06-19 |
CN1630674A (zh) | 2005-06-22 |
CN100509912C (zh) | 2009-07-08 |
CN101570594A (zh) | 2009-11-04 |
US20050107576A1 (en) | 2005-05-19 |
TW200303879A (en) | 2003-09-16 |
DE60328083D1 (de) | 2009-08-06 |
KR20040075916A (ko) | 2004-08-30 |
EP1475402A4 (en) | 2006-03-29 |
US7300998B2 (en) | 2007-11-27 |
ATE434637T1 (de) | 2009-07-15 |
CN101570594B (zh) | 2012-06-20 |
TWI299047B (en) | 2008-07-21 |
EP1475402B1 (en) | 2009-06-24 |
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