WO2004063278A1 - ポリエステル樹脂組成物 - Google Patents
ポリエステル樹脂組成物 Download PDFInfo
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- WO2004063278A1 WO2004063278A1 PCT/JP2004/000059 JP2004000059W WO2004063278A1 WO 2004063278 A1 WO2004063278 A1 WO 2004063278A1 JP 2004000059 W JP2004000059 W JP 2004000059W WO 2004063278 A1 WO2004063278 A1 WO 2004063278A1
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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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
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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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/60—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/025—Polyesters derived from dicarboxylic acids and dihydroxy compounds containing polyether sequences
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
Definitions
- the present invention relates to a specific polyester resin composition containing an oxycarboxylic acid. More specifically, the contained carboxylic acid units are adjacent to each other.
- the present invention relates to a polyester resin composition containing oxycarboxylic acid, which has a specific relationship in bonding with units and has excellent gas barrier properties, mechanical properties, transparency, hue, heat resistance, and the like.
- polyethylene terephthalate is often used for food packaging materials such as beverage containers because of its excellent balance of moldability, mechanical properties, and gas barrier properties.
- gas barrier properties were not necessarily sufficient.
- Japanese Patent Application Laid-Open No. 59-21519 discloses polyethylene terephthalate obtained by copolymerizing oxycarboxylic acid.
- This polyester has the ability to improve the gas barrier properties of polyethylene terephthalate.It requires long-term polycondensation under high-temperature and reduced pressure to produce it, making it difficult to copolymerize oxycarboxylic acid at a high concentration.
- An object of the present invention is to provide a polyester resin composition having improved gas barrier properties while maintaining excellent mechanical properties and hue, particularly transparency and heat resistance, comparable to crystalline polyester. Disclosure of the invention
- the present invention relates to a composition containing a copolymerized polyester containing oxycarboxylic acid as a unit, wherein the total number of constituent units contained in the composition is 100 mol%, and the oxycarboxylic acid unit having 5 or less carbon atoms is contained.
- the molar ratio of oxycarboxylic acid units whose both adjacent units are both oxycarboxylic acid units in the total and contained oxycarboxylic acid units is 2 to 75 mol ° / 0 , and the molar ratio of both adjacent units is SAA. both when the molar ratio of have Okishikarubon acid units such in Okishikarubon acid units and S B B,
- a polyester resin composition which is:
- polyester resin composition examples include (A) Copolyester containing carboxylic acid or polyoxycarboxylic acid
- a crystalline polyester (not the same as (A) is a copolymerized polyester obtained by melting and mixing 99 to 50 parts by weight, and contains
- S AA The molar ratio of oxycarboxylic acid units whose both adjacent units are both oxycarboxylic acid units to the oxycarboxylic acid units
- S B B The molar ratio of oxycarboxylic acid units whose both adjacent units are not oxycarboxylic acid units
- the present invention is a copolymer of poly ester thereof, in the Okishikarubon acid units, when the total of all structural units and 1 0 0 mol%, is 5 or less Okishikarubon acid units carbons 2-7 5 mol 0 / 0
- both adjacent units are oxy and carboxylic acid units
- the molar ratio of oxycarboxylic acid units is S AA
- both adjacent units are oxycarboxylic acid units.
- S AA / S B B is the total Okishikarubon acid units, are indicators showing the ratio of the 'chained Okishi force Rupon Sambu-locking and isolated Okishikarubon acid units.
- S AA / S BB is preferably in the range of 0.03 and S AA / S BB , and more preferably in the range of 0.3 and S AA ZS BB , preferably 25.
- the polyester resin composition having S AA ZS BB within such a range has good gas barrier properties and heat resistance. And high transparency.
- S AA / S B B of the present invention can be determined by the following method.
- the polyester resin composition is hydrolyzed as it is or after being hydrolyzed into monomer units, and then a monomer unit to be contained is determined by a method such as NMR.
- the abundance ratio of each binding pattern is determined from the signal intensity ratio, utilizing the fact that the chemical shift of each constituent unit signal differs depending on its binding pattern, that is, adjacent monomer units. Can be.
- the oxycarboxylic acids having 5 or less carbon atoms of the present invention include glycolic acid, 4—hydroxyn-butyric acid, 2—hydroxyisobutyric acid, 5—hydroxyl-n-valeric acid, and 3-hydroxypropionate. Acids and the like can be exemplified. These may be used alone or in combination of two or more. Further, lactic acid may be used for a part thereof. Of these, glycolic acid and 3-hydroxypropionic acid are preferred, and glycolic acid is particularly preferred.
- the oxycarboxylic acid used here may be a monomer of oxycarboxylic acid, a cyclic monomer, or a cyclic or linear multimer.
- Specific examples of the multimer include glycolide, lactide and various lactones.
- the polyester resin composition of the present invention described above comprises, for example, 1 to 50 parts by weight, preferably 3 to 45 parts by weight, and more preferably 5 to 50 parts by weight of a copolymerized polyester or polyoxycarboxylic acid containing (A) oxycarboxylic acid. To 40 parts by weight and (B) a crystalline polyester (but not the same as (A)). B) 9 9-5 0 parts by weight, preferable properly 9 7-5 5 parts by weight, further was rather 9 5-6 0 parts by weight preferred, and by Uni melt mixing a predetermined S A AS BB value Obtainable.
- polyester resin composition of the present invention obtained by such a method will be described in more detail.
- Okishikarubon acid copolyester or polyoxyethylene acids when the total of all structural units and 1 0 0 mole 0/0, includes Okishikarubon acid monomer position 4 5-1 0 0 mol%, is preferred properly 5 0-9 9 mol%, further good or signaling comprises 6 0-9 8 mol 0/0.
- the rest consists of dicarboxylic acids and diols.
- An aromatic dicarboxylic acid is preferably used as the dicarboxylic acid, and a diol having 4 or less carbon atoms is preferably used as the diol.
- the oxycarboxylic acid to be used those exemplified above are preferably used.
- aromatic dicarboxylic acid examples include an aromatic dicarboxylic acid having 8 to 14 carbon atoms. Specifically, isophthalic acid, terephthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 4.4'-sulfonbisbenzoic acid, 4.4, 1-biphenyldicarboxylic acid, 4.4, 1-sulfidobisbenzoic acid, 4.4′-monobisbisbenzoic acid and the like are exemplified. Among them, it is preferable to use isophthalenic acid, terephthalenoleic acid, and 2.6-naphthalenedicarboxylic acid. These aromatic dicarboxylic acids may be used alone or in combination of two or more.
- Examples of the diol having 4 or less carbon atoms include ethylene dalicol, Examples include diethylene glycol cornole, 1.3-propanediole, 1,2-propanediol, and 1,4-butanediol. Among them, it is preferable to use ethylene glycol. These joles having 4 or less carbon atoms may be used alone or as a mixture of two or more.
- the following units can be included as long as the composition does not deviate from the range.
- the unit of the dicarboxylic acid that may be contained include oxalic acid, malonic acid, conodic acid, fumanoleic acid, maleic acid, gnoletanoleic acid, adipic acid, sebacic acid, azelaic acid, and decane.
- Aliphatic dicarboxylic acids such as dicarboxylic acids, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid.
- the units of the diols that may be contained are, specifically, diethylene glycolone, 1, 2, and 3.
- Examples of the monomer unit having a functionality of 3 or more include a unit derived from a polyfunctional carboxylic acid having 3 or more carboxyl groups or a polyfunctional alcohol having 3 or more hydroxyl groups, 3 or more carboxyl groups, Examples include units derived from polyfunctional hydroxy acids having a hydroxyl group.
- a unit derived from a polyfunctional alcohol having three or more hydroxyl groups it is particularly preferable to contain a unit derived from a polyfunctional alcohol having three or more hydroxyl groups.
- Propane, pentaenoresitol, dipentaerythritol, or sonorebitone, gnoleose, ratatoose, galactose, fructose, saccharose and other sugars, and nitrogen such as 1,3,5-trishydroxyxoxysocyanurate Units derived from the contained polyhydric alcohol may be mentioned.
- glycerin 1,1, 1- (trishydroxymethyl) ethane, 1,1,1- (trishydroxymethynorole) prono II. More preferably, it is selected from units derived from pentaerythritol and dipentaerythritol. '
- the reduced viscosity (IV) of (A) the oxycarboxylic acid copolymerized polyester or polyoxycarboxylic acid is usually from 0.3 to 2.5, preferably from 0.4 to 2.0, more preferably from 0.4 to 2.0. 5 to 1.5.
- the glass transition temperature of the above polyester is usually 20 to 90, and is preferable. More preferably, the temperature is from 25 ° C to 80 ° C, more preferably from 30 ° C to 70 ° C.
- the (A) oxycarboxylic acid copolymerized polyester or polycarboxylic acid of the present invention may be a product produced by any known method as long as it has good gas barrier properties, transparency and mechanical properties.
- an oxycarboxylic acid, an aromatic dicarboxylic acid, or a diol having 4 or less carbon atoms may be esterified and further subjected to melt polycondensation
- an oxycarboxylic acid ester, an aromatic dicarboxylic acid ester, or a diol having 4 or less carbon atoms may be esterified. May be exchanged and further subjected to melt polycondensation, or the cyclic multimer of oxycarboxylic acid may be polymerized by cleavage, and the obtained polyester obtained by these methods may be subjected to solid-phase polymerization. Is also good. Among them, the production method by melt polycondensation is preferable because various components can be copolymerized.
- a low polymer is produced by esterification or transesterification, and the low polymer is subjected to melt polycondensation and further to high molecular weight by solid phase polymerization.
- the manufacturing method is shown below.
- a predetermined oxycarboxylic acid, aromatic dicarboxylic acid, and ethylene glycol are preferably used simultaneously or successively.
- Preferable examples include a method of directly esterifying at a temperature of 130 to 220 ° C. under pressure or normal pressure.
- the oxycarboxylic acid used here may be either oxycarboxylic acid, a cyclic monomer of oxycarboxylic acid, a cyclic multimer, or a chain multimer. Specific examples of the multimer include glycolide, lactide and various lactones.
- the dicarboxylic acid raw material is used in an amount of 1.0 to 3.5 monoles, preferably 1.1 to 3.0 monoles, and the oxycarboxylic acid raw material in a total amount of 1 mol. It is preferable to charge and react at a ratio of 1 mol to 198 mol, preferably 3 mol to 98 mol. ''
- the above esterification reaction may be carried out without a catalyst, or in the presence of a catalyst such as an acid such as concentrated sulfuric acid or P-toluenesulfonic acid or a metal complex. Is preferred.
- a predetermined amount of an oxycarboxylic acid ester, an aromatic dicarboxylic acid ester, or a diol having 4 or less carbon atoms is used. Is carried out under a normal pressure at a temperature of 130 to 220 ° C. while distilling a lower monoalcohol.
- the above transesterification reaction is usually performed in the presence of a metal complex such as manganese acetate or zinc acetate.
- the low polymer obtained by the above method is subjected to a temperature range of 150 ° C. to 250 ° C., preferably 190 ° C. to 230 ° C. in the presence of a polymerization catalyst and a stabilizer.
- a temperature range of C the mixture is stirred for 1 hour to 2 hours while distilling a component mainly composed of a diol such as a diol having 4 or less carbon atoms or an oxycarboxylic acid while stirring under reduced pressure conditions of 10 Torr or less, preferably 2 Torr or less.
- the desired polyester resin can be produced by performing the melt polycondensation for 4 hours, preferably 2 hours to 12 hours.
- Examples of the polymerization catalyst used herein include alkali metals such as sodium, alkaline earth metals such as magnesium, aluminum, zinc, tin, titanium, copper, nickele, konorelet, zirconium, and genolemanium.
- alkali metals such as sodium
- alkaline earth metals such as magnesium, aluminum, zinc, tin, titanium, copper, nickele, konorelet, zirconium, and genolemanium.
- Organic complexes, oxides, and simple substances of metals such as iron, antimony, and vanadium can be used.
- organic complexes or oxides of transition metals such as zinc, tin, titanium, cobalt, germanium, and antimony can be used. Is preferable, and germanium dioxide is particularly preferable.
- these reactions may be performed in the presence of various stabilizers, color inhibitors, and hydrolysis inhibitors.
- the stabilizer and the coloring inhibitor include a phosphorus compound and a hindered phenol compound.
- phosphorous compounds include inorganic phosphorous compounds such as phosphoric acid, phosphorous acid, and polyphosphoric acid, phosphate ester compounds such as trimethylphosphoric acid and diphenylphosphoric acid, and triphenylphosphite.
- phosphite compounds such as tris (2,4-di-l-p-tizolevinole) phosphite.
- melt polycondensation is performed at a temperature in the range of 150 ° C. to 250 ° C., preferably 190 ° C. to 230 ° C. or less, only a small amount of oligomer is distilled out Polymerization can be carried out efficiently, and a polyester resin having a sufficiently high molecular weight can be obtained.
- solid-phase polymerization can be performed.
- Known methods can be used for the solid-phase polymerization.For example, under a reduced pressure or an inert gas atmosphere, a temperature of 80 to a melting peak temperature or lower, and a temperature of 1 to 3 at a temperature of 30 ° C or lower. After pre-crystallization by holding for 100 minutes, the polymer has a high molecular weight by conducting solid-state polymerization at a temperature of 130 to 100 ° C or lower at a temperature of 130 to 100 ° C or lower for 1 to 100 hours.
- the crystalline polyester (B) (but not the same as (A)) of the present invention can be obtained by copolymerizing dical'bonic acid and a diol.
- a polyalkylene phthalate such as polyethylene terephthalate, poly (methylene terephthalate), polybutylene terephthalate, or polyethylene phthalate is particularly preferably used.
- polyethylene 1,6-naphthalate can be preferably used.
- Polylactic acid is preferred as the aliphatic crystalline polyester.
- Polylactic acid includes copolylactic acid such as lactic acid-l-carboxylic acid copolymer and lactic acid-aliphatic polyhydric alcohol polyaliphatic polybasic acid copolymer, and polylactic acid and lactate-loxycarboxylic acid copolymer and lactate-lfatty acid.
- a polyhydric alcohol-aliphatic polybasic acid copolymer is included.
- '' Lactic acid is a raw material for polylactic acid And oxycarboxylic acids, aliphatic polyhydric alcohols, aliphatic polybasic acids, and the like.
- Specific examples of the lactic acid include L-lactic acid, D-lactic acid, DL-lactic acid or a mixture thereof, and ratatide, which is a cyclic dimer of lactic acid.
- the aromatic and aliphatic crystalline polyesters (B) may be copolymerized with other aromatic or aliphatic dicarboxylic acid units or diol units as long as the crystallinity is not impaired. Also, a small amount of a trifunctional monomer, that is, a unit having three or more hydroxyl groups or carboxyl groups may be copolymerized.
- dicarboxylic acid units that may be contained include phthalic acid, isophthalic acid, 2.6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, and 1,4-naphthalenedicasolevon Acids, 4, 4, — aromatics such as sunole honbisbenzoic acid, 4, 4'-biphenyldicarboxylic acid, 4, 4'-sulfidobisbenzoic acid, 4,4'-monobisbisbenzoic acid, diphenoxyethanedicarboxylic acid Alicyclics such as dicarboxylic acids, malonic acid, succinic acid, glutaric acid, fumaric acid, maleic acid, adipic acid, sebacic acid, azelaic acid, and decanedicarboxylic acid, and alicyclics such as cyclohexanedicarboxylic acid Dicarboxylic acids.
- diols that may be contained include diethyleneglycol mono-, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, and 1,4-butanediol.
- Aliphatic diols such as hexanediole, neopentinole glycol, dodecamethylene glycol cornole, triethylene glycol cornole, tetraethylene glycol, etc.
- alicyclic diols such as cyclohexane methanol, 1,3-bis (2-hydroxyethoxy) benzene, 1,2-bis (2-hydroxyethoxy) benzene, 1,4-bis (2-hydroxyethoxy) benzene, bis [4- (2- Examples include diols containing aromatic groups such as (hydroxyethoxy) phenenole] snolephon, 2,2-bis (4-—3) -hydroxyoxytoxie-nore) propane, bisphenolenes, hide-mouth quinones, and resorcinol.
- the crystalline polyester (B) as described above may be used alone or in combination of two or more.
- the crystalline polyester (B) shown above may be one produced according to any method generally used for producing ordinary polyester resins. For example, it may be produced by melt polycondensation. Further, the above-mentioned crystalline polyester (B) may be a solid-phase polymerized one.
- the crystallinity of the polyester (B) is determined based on whether or not a melting 'peak is observed by a differential scanning calorimeter (DSC).
- DSC differential scanning calorimeter
- the melting peak of DSG is obtained by melting the resin composition once under a normal pressure of nitrogen or helium at a temperature at which the resin composition can be melt-molded, and then at a cooling rate of about 11 oC / min. It can be obtained by quenching to room temperature and solidifying, and then measuring again at a heating rate of 10 ° cz to the melting temperature.
- the melting peak temperature is preferably in the range of 50 to 300 ° C.
- the heat of fusion is determined from the measured peak area.
- the heat of fusion ⁇ H fb is preferably 1 (1 / g) or more, and more preferably 10 (J / g) or more. More preferred.
- polyester resin composition As the crystalline polyester as described above, a polyester that has been used once and then separated and recovered, particularly a recovered polyethylene terephthalate resin, can also be suitably used. Polyester resin composition
- the polyester resin composition of the present invention comprises (A) a copolymerized polyester or a polyoxycarboxylic acid containing oxycarboxylic acid in an amount of 1 to 50 parts by weight, preferably 3 to 45 parts by weight, and more preferably 5 to 40 parts by weight. And (B) a crystalline polyester (but not the same as (A).) In an amount of 99 to 50 parts by weight, preferably 97 to 55 parts by weight, more preferably 95 to 60 parts by weight. can be obtained by melt-mixed at a predetermined S AA ZS BB value.
- the gas barrier properties of the polyester resin composition tend to be improved as the amount of the oxycarboxylic acid contained therein increases.
- the oxycarboxylic acid of the present invention has a high concentration compared to the addition of a low-concentration copolymer of an oxycarboxylic acid outside the scope of the present invention.
- (B) Improved gas barrier properties without impairing the inherent properties of crystalline polyester, such as heat resistance, moldability, and mechanical strength, because the addition of copolymerized polyester (A) requires a smaller amount. can do.
- A glycol acid unit (abbreviated as hereinafter GA), isophthalic acid unit (hereinafter IA) Oyopi ethyleneglycidyl co Lumpur unit (hereinafter EG)
- GA glycol acid unit
- IA isophthalic acid unit
- EG Oyopi ethyleneglycidyl co Lumpur unit
- GA can bind to GA, IA, or TA on the hydroxyl side and to GA or EG on the carboxyl side. Focusing on the methine carbon signal of GA by 13 C-NMR, the signals are 1 GA—GA—GA, 2 EG—GA—GA, 3 GA—GA— IA, and GA—GA—TA due to differences in adjacent groups. , 4 Divide into four types, EG—GA—IA and EG—GA—TA. The signal intensity ratio corresponds to the molar proportions of the different GA units of adjacent groups, respectively S, and be represented by S 2, S 3, S 4 .
- the total GA units because the percentage proportion both adjacent units are both GA units is not GA acid unit are both both adjacent units GA units
- GA units is S 4
- the SAA / SBB value can be calculated in the same manner for other than glycolic acid.
- polyester resin composition of the present invention preferably satisfies the carbon dioxide gas permeability coefficient Pc force S, and the following formula 1.
- Equation 1 The right-hand side of (Equation 1) is the equation LMaxwe ⁇ 1 equation for numerically calculating the gas permeability coefficient of a two-component model in which the spherical (A) component is dispersed in the (B) component of the matrix phase.
- LMaxwe ⁇ 1 equation for numerically calculating the gas permeability coefficient of a two-component model in which the spherical (A) component is dispersed in the (B) component of the matrix phase.
- Polyester resin composition within the scope of the present invention Since the gas permeation coefficient P c of the product is smaller than the value predicted from Maxwell's formula, the gas barrier is obtained by the fact that (B) and (A) are appropriately transesterified to form a block copolymer. It is thought that the sex is higher than a simple mixture ⁇ ).
- the carbon dioxide gas permeability coefficient of the polyester resin composition of the present invention is obtained by sandwiching a predetermined amount of a sufficiently dried polyester resin composition between two brass plates, an aluminum plate and a release film. Melted at ° C, compressed at 10 MPa for 1 minute, and compressed and cooled again at 10 MPa with a compression molding machine set at a temperature of 0 ° C. 50 to 100 ⁇ m The thickness of the press film was measured at 25 ° C using a gas permeability tester, for example, GPM-250 device manufactured by GL Sciences Inc., using carbon dioxide gas at normal pressure as the measurement gas. Value.
- a gas permeability tester for example, GPM-250 device manufactured by GL Sciences Inc.
- the haze of the polyester resin composition of the present invention is preferably 20 or less, more preferably 5 or less, and the hue b value is preferably 15 or less, and is preferably 10 or less. More preferred.
- the haze of the polyester resin composition of the present invention is determined by sandwiching a predetermined amount of the polyester resin composition, which has been sufficiently dried under reduced pressure, between two brass plates, an aluminum plate, and a release film at 280 ° C. Melted, compressed for 1 minute at 10] ⁇ 4? & Then compressed and cooled again at 10 MPa with a compression molding machine set at a temperature of 0 ° C, resulting in a thickness of approx. This is a value measured for a press sheet having the following in accordance with JISK-7105.
- the reflection spectrum obtained when the above-mentioned sheet with a thickness of about 200 ⁇ is fixed on a 2 mm-thick Teflon (registered trademark) sheet is used.
- the polyester resin composition of the present invention it is preferable to obtain the oxycarboxylic acid copolymerized polyester or the polyoxycarboxylic acid (A) and the crystalline polyester (B) by melt mixing. Alternatively, it is preferably obtained by further performing solid phase polymerization after melt mixing.
- the temperature at which the melt mixing is performed may be any temperature as long as the temperature is equal to or higher than the flow temperature of the oxycarboxylic acid copolymerized polyester or the polyoxycarboxylic acid (A) and equal to or higher than the melting point of the crystalline polyester (A). It is desirable that the temperature be in the temperature range of 80 to 300 ° C, and more preferably in the range of 220 to 290 ° C.
- the time for performing the melt mixing is preferably between 30 seconds and 4 hours, more preferably between 1 minute and 2 hours.
- a single-screw extruder, a twin-screw extruder, a blast mill, a kneader, or a reactor equipped with a stirrer, a decompression device, or the like can be given.
- This melt mixing is desirably performed under an inert gas atmosphere and / or under reduced pressure.
- twin-screw extruder having a device capable of freely changing the feed amount.
- These mixing may be performed in the presence of a catalyst or a stabilizer in addition to the oxycarboxylic acid copolymerized polyester or the polyoxycarboxylic acid (A) and the crystalline polyester (B).
- the catalyst and stabilizer may be contained in advance in the oxycarboxylic acid copolymerized polyester or the polyoxycarboxylic acid (A) or the crystalline polyester (B), and may be added at the time of melt mixing.
- Alkali metal, Al Examples include potassium earth metals, or metals such as manganese, zinc, tin, cobalt, titanium, antimony, and germanium, and organic / inorganic compounds containing them.
- the stabilizer and the coloring prevention agent include a phosphorus compound and a hindered phenol compound.
- phosphorus compounds are particularly preferred.
- phosphorous compounds include inorganic phosphorous compounds such as phosphoric acid, phosphorous acid, and polyphosphoric acid, phosphate ester compounds such as trimethylphosphoric acid and diphenylphosphoric acid, triphenyl phosphite, and phosphoric acid.
- phosphite compounds such as ris (2,4-di-t_butylphenyl) phosphite.
- an appropriate amount of a force coupling agent reactive with both polyesters may be used.
- the coupling agent is a compound having two or more groups reactive with the terminal hydroxyl group or carboxy group of the polyester. Examples of the group having reactivity with the hydroxyl group or carboxyl group at the terminal of the polyester include an acid anhydride group, an isocyanate group, an epoxy group, an oxazoline group, and a carbodiimide group.
- Specific compounds having these are anhydrous pyromellitic acid, tolylene diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, diphenyl methandi succinate, ethylene glycol regis glycidino succinate. Liethenole, resonoresinol diglycidyl ether, and bisoxazoline.
- melt mixing melting temperature, while when melted melting conditions such as melt mixing device, such as a mixed condition
- Okishikaru bon acid copolymer poly esters or polyoxyethylene carboxylic acid Mixing ratio, composition, molecular weight, catalysts and stabilizers of A
- crystalline polyester B It is appropriately selected depending on the presence or absence of the pulling agent.
- a polyethylene terephthalate having an IV force of SO.8 d.l / g and a polyethylene terephthalate having an IV of 0.8 d 1 / g are used.
- Polyester or polyoxycarboxylic acid is mixed at a weight ratio of 90 to 10 In this case, it is preferable that the components are melt-mixed in a temperature range of 280 ° C. for 5 minutes to 15 minutes.
- a polyoxycarboxylic acid having a high copolymerization ratio is used, for example, when polyglycolic acid is used, it is preferable to melt-mix for a longer time.
- the molecular weight of the ester (B) is larger than this, it is preferable to melt-mix for a longer time, and if the catalyst is not present or deactivated, it is further melt-mixed for a longer time. It is preferable to melt-mix for a longer time even when a stabilizer such as a phosphoric acid ester is present. Further, under the condition of more intense kneading, it is preferable that the components are melted and mixed in a shorter time.
- Poly ester resin composition having an s AA Z s BB value specified in the present invention is a method of obtaining efficiently in a shorter time, more easily reacts with the composition to port Riesuteru resin (A) and (B) It is desirable to do.
- an aromatic dicarboxylic acid group such as isophthalic acid group or 2,6-naphthalenedicarboxylic acid group is used as (A). It is preferable to select a polymerized oxycarboxylic acid copolymer.
- the polyester resin composition obtained by melt mixing is further heated at a temperature not higher than its melting point under reduced pressure or under an inert gas stream for 20 minutes to 4 minutes.
- the solid state polymerization may be performed while the temperature is kept within a range of 00 hours.
- Known methods can be used for the solid-phase polymerization.For example, a pellet, flake, or powder of the polyester resin composition is heated to 80 ° C to a melting peak temperature of 30 ° C or less under an inert gas atmosphere. After pre-crystallization by maintaining the temperature for 1 to 300 minutes under the temperature range of C, the temperature range of 130 ° C to the melting peak temperature or lower is 20 minutes to 400 hours.
- the solid state polymerization can be carried out by keeping the reaction time for 1 hour to 100 hours, more preferably 2 hours to 50 hours.
- the resin composition that has been subjected to solid-state polymerization is preferable because it has a high molecular weight, contributes to an improvement in mechanical strength, and reduces the content of low-molecular components.
- the transesterification proceeds also by performing the solid phase polymerization. Therefore, it is adjusted in a shorter time than the preferable melt mixing time described above,
- the measuring method of each physical property and index in the present invention is as follows.
- (1) Composition As for the composition of the polyester resin, the monomer unit contained in the polyester resin as it was determined by an NMR method.
- composition of the oxycarboxylic acid copolymerized polyester was determined by measuring a 270 MHz proton nuclear magnetic resonance spectrum of a double-mouthed form solution.
- composition of the polyester resin composition except for a part, It was estimated from the composition of the ester resin.
- S AA / SB B is a signal indicating a bonding pattern in which both adjacent units of an oxycarboxylic acid unit are both oxycarboxylic acid units in NMR, and a signal indicating a bonding pattern in which both adjacent units of the oxycarboxylic acid unit are not both oxycarboxylic acid units.
- the reduced viscosity IV of the polyester and the polyester resin composition was measured at 25 in a mixed solution of phenol and tetrachloroethane (weight ratio 1/1).
- the carbon dioxide gas transmission coefficient was determined by quenching each resin and resin composition from a molten state to a temperature of 0 ° C or less for a press film with a thickness of 50 to 100 ⁇ . Measured at 25 ° C using a -250 instrument.
- the transparency of the polyester resin is 0 ° C or less from the molten state of the resin composition
- the press film having a thickness of 200 ⁇ m obtained by rapid cooling was measured at 23 ° C. using a haze meter manufactured by Nippon Denshoku Co., Ltd.
- the hue (b-value) of the film was measured by pressing a 20 mm thick press film on a 2 mm thick Teflon (registered trademark) sheet and measuring it with Minolta Camera. The total was measured using a CM-10000 type.
- the obtained polyester oligomer was charged into a glass reactor equipped with a stirrer and a distillation tube.
- the distilling pipe is connected to a vacuum device consisting of a vacuum pump and a decompression regulator, and has a structure capable of distilling off evaporants.
- 2.10 g of a germanium-based catalyst (containing 6.7 wt% of germanium dioxide) was added thereto.
- the reaction was carried out for about 30 minutes under stirring at 200 ° C under a nitrogen stream, and then the temperature of the system was raised to 220 ° C over 4 hours, and maintained at 220 ° C until the reaction was completed.
- a germanium-based catalyst containing 6.7 wt% of germanium dioxide
- the pressure was reduced to about 0.8 T rr over about one hour at the same time as the temperature rise, and the conditions of about 0.8 to 0.5 T rr were maintained thereafter.
- the reaction was carried out for about 11.5 hours from the start of depressurization, and the generated ethylene glycol and the like were distilled out of the system. During this polycondensation reaction, the viscosity of the reactants increased with time, and a polyester resin (A1) was obtained.
- the reduced viscosity IV of the obtained polyester resin (A 1) is 0.8 2 9 dl Z g.
- the polyester resin After drying the polyester resin under reduced pressure at about 40 ° C for about 20 hours, a predetermined amount is sandwiched between two brass plates, an aluminum plate, and a release film, and melted at 200 ° C. After compression at 0 MPa for 1 minute, the film was compression-cooled again at 10 MPa with a compression molding machine set at a temperature of 20 ° C. to produce a press film having a thickness of about 70 m. As a result of measuring the gas barrier properties of the obtained film, the carbon dioxide gas transmission coefficient was 0.74 cm 3 ⁇ mm /, m 2 / day ⁇ atm).
- Example 2 As in Example 1, 250.0 g (3.29 moles) of glycolenoic acid, 136.5 g (0.82 monole) of isophthalenoleic acid, 17.3 g of ethylene glycolone (1.89 mol), and the esterification reaction was carried out by a predetermined method (9 hours). Thereafter, 1.82 g of a germanium-based catalyst (containing germanium dioxide 6.7 wt./.) was added, and the mixture was reacted for 9.5 hours by a predetermined method to obtain a polyester resin (A 2).
- a germanium-based catalyst containing germanium dioxide 6.7 wt./.
- the obtained polyester resin (A 2) was measured for gas barrier properties in the same manner as in Production Example 1. As a result, the carbon dioxide gas transmission coefficient was 1.1 cm 3 -mm / (m 2 / ⁇ ay ⁇ atm). Was.
- glycolic acid 149 g (19.6 moles) 33 g (0.2 monole) of tanoleic acid and 16 g (0.26 mol) of ethylene glycol were charged, and an esterification reaction was carried out by a predetermined method (9 hours). Thereafter, 8.8 g of a germanium-based catalyst (containing 6.7 wt% of germanium dioxide) was added, and the reaction was performed for 5 hours by a predetermined method.
- the components of dalicholic acid, isophthalic acid, ethylene glycol, and diethylene glycol in the polyester resin (A3) have a composition of 98.0 mono%, 1.0 mono%, and 0 mono%, respectively. . 9 Monore%, and 0. was 1 Monore 0/0.
- the obtained polyester resin (A 3) was measured for gasparity in the same manner as in Production Example 1. As a result, the carbon dioxide gas transmission coefficient was 0.1 Scr ⁇ -mm / (m ” ⁇ day-atm; This.
- Glycoride (Boehringer ⁇ Singlheim) 120 g and lauryl alcohol 72 mg dissolved in a mouth-form solution and tin chloride 36 mg dissolved in a mouth-form solution were stirred and distilled.
- the mixture was charged into a glass reactor equipped with a tube, sufficiently purged with nitrogen gas, and then stirred at normal pressure at 180 ° C. and heated. Since the inside of the system was solidified in about 1 hour, stirring was stopped, and then heating was continued for 1 hour. Thereafter, the mixture was heated to 250 ° C. to dissolve the solid to obtain polyglycolic acid (PGA).
- the obtained polyglycolic acid (PGA) was measured for gas pallidability in the same manner as in Production Example 1, and as a result, the carbon dioxide gas transmission coefficient was 0.1 cm 3 ⁇ mm / (m 2 ⁇ day'atm).
- polyester resin (A 4) a result of measuring the Gasuparia of Production Example 1 Similarly, the carbon dioxide gas permeability coefficient 2 2 cm 3 - mm /, ⁇ ⁇ ⁇ day ⁇ atra;. In mediation 7 this .
- polyester resin (A 1) 10 parts by weight of the polyester resin (A 1) and 30 parts by weight of a 30 to 2 ⁇ ⁇ ⁇ ⁇ ⁇ taper single-shaft extruder (manufactured by Haake) at a cylinder temperature of 280 ° C and transparent
- the polyester resin composition was obtained by adjusting the feed amount so as to maintain a proper state. With respect to the obtained polyester resin composition, the melting peak temperature was measured. Table 1 shows the results.
- polyester resin composition was analyzed by 13 C-NMR measured in a mixed solvent of double-mouthed form / deuterated trifluoroacetic acid to give 61.
- the signal at 27 ppm is referred to as GA—GA—GA signal, and the signal at 61.7 2 ppm is referred to as EG (and DEG) —GA—IA and EG (and DEG) _GA—TA signal. From the intensity ratio, S AA /
- this polyester resin composition After drying this polyester resin composition under reduced pressure at about 70 ° C for about 20 hours, a predetermined amount is sandwiched between two brass plates, an aluminum plate, and a release film, and then at 280 ° C. After being melted and compressed at 10 MPa for 1 minute, it is compressed and cooled again at 10 MPa with a compression molding machine set at a temperature of 0 ° C, and the thickness is reduced to about 7 A 0 m press film was prepared and the carbon dioxide barrier properties were measured. A press film having an average thickness of 200 ⁇ m was prepared, and the haze and hue (b value) were measured. Table 1 shows the results.
- Example 1 As in Example 1, 90 parts by weight of poly (ethylene terephthalate) and 10 parts by weight of the polyester (A2) of Production Example 2 were mixed to obtain a resin composition. Molding was performed in the same manner as in Example 1. Evaluation was performed. Table 1 shows the results.
- Example 3 As in Example 3, 95 parts by weight of polyethylene terephthalate and the polyglycolic acid of Production Example 4 (Tg: 43 ° C, Tm: 23 ° C, number average molecular weight in terms of PMMA: 1) 50000 parts by weight (0000,000 (hexafluoro-2-propanol solvent)) were mixed to obtain a polyester resin composition. The molding and evaluation were performed in the same manner as in Example 1. Table 1 shows the results.
- Example 6 90 parts by weight of a commercially available polyethylene terephthalate sufficiently dried by a vacuum drier and 10 parts by weight of the polyester resin (A 3) of Production Example 3 were mixed at 280 ° C. in a Rapoplast mill. The mixture was melted and mixed at OO rpm for 18 minutes to obtain a polyester resin composition. Next, molding evaluation was performed in the same manner as in Example 1. Table 1 shows the results.
- Example 3 90 parts by weight of poly (ethylene terephthalate) and 10 parts by weight of polyglycolic acid of Production Example 4 were mixed to obtain a polyester resin composition.
- a molding test was performed in the same manner as in Example 1. Table 1 shows the results. The value of S AA / S BB is higher and the haze value is higher than in Example 4.
- the temperature was raised from 160 ° C to 220 ° C with stirring over 6 hours in a nitrogen atmosphere at normal pressure, and methanol was distilled off. 0.12 g of the esthetic was added in a state of being dissolved in 1.58 g of ethylene glycol, and the mixture was sufficiently purged with nitrogen, followed by stirring at 220 ° C. for 20 minutes under a normal pressure nitrogen stream. Subsequently, the temperature was raised to 260 ° C over 80 minutes, and then maintained at 260 ° C for 30 minutes.Then, the vacuum pump was operated, and the pressure was reduced to 1 Torr over 1 hour.
- this polyester resin When the composition of this polyester resin was determined by NMR, it contained 4.6 wt% (7.5 mol%) of glycolic acid units, and was a polyester resin having a composition close to that of Example 4. S AA ZS BB value is and block is low 0, heat resistance Ru inferior melting peak temperature is lower than that of example 4. In addition, it is manufactured by direct polymerization, and has a poor hue due to a long-term heat history.
- polyester resin (A 4) of Production Example 5 90 parts by weight of a commercially available polyethylene terephthalate sufficiently dried by a vacuum dryer and 10 parts by weight of the polyester resin (A 4) of Production Example 5 were mixed with each other. The mixture was melt-mixed in a Labo Plastomill (manufactured by Toyo Seiki Co., Ltd.) at 280 ° C. and 100 rpm for 10 minutes to obtain a polyester resin composition. The molding evaluation was performed in the same manner as in Example 1. Table 1 shows the results. Due to the low glycolic acid content in the polyester resin (A4), the same amount of oxycarboxylic acid copolymer polyester as in Examples 1, 2, 3, and 6 was added to polyethylene terephthalate. Nevertheless, the gas barrier properties of the polyester resin composition are low.
- Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Content of glycolic acid unit [wt%] 5.8 4.5 5.8 5.0 6.8 9.7 29.0 23.7 10.0 4.6 1.3 0 Gericholate unit content [mol%] 9.3 7.3 9.3 8.1 10.8 15.1 40.5 34.1 15.6 7.5 2.1 0
- a component composition A1 A2 A1 PGA A3 A3 A3 A3 PGA A4 Weight fraction A / (A + B) [t%] 10 10 10 5 7 10 30 (30) 10 10
- the present invention is in the amount Okishikarubon acid specific molar% range included in the polymer, and the molar ratio s AA Zs BB of Okishikarubon acid unit between Okishikarubon acid was isolated as a continuous unit, the specific range This is a certain polyester resin composition. In such a specific range
- the present resin composition can be suitably used for packaging materials for foods such as films and blow containers that require gas barrier properties, packaging materials for electronic components and the like.
- the present polyester / ter resin composition can be obtained preferably from a polyester resin obtained by copolymerizing or homopolymerizing oxycarboxylic acid and a crystalline polyester resin.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
- Laminated Bodies (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/538,750 US8106132B2 (en) | 2003-01-10 | 2004-01-08 | Polyester resin composition |
EP04700766A EP1582564B1 (en) | 2003-01-10 | 2004-01-08 | Polyester resin composition |
DE602004026992T DE602004026992D1 (de) | 2003-01-10 | 2004-01-08 | Polyesterharzzusammensetzung |
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JP2003005007 | 2003-01-10 | ||
JP2003-5007 | 2003-01-10 |
Publications (1)
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WO2004063278A1 true WO2004063278A1 (ja) | 2004-07-29 |
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PCT/JP2004/000059 WO2004063278A1 (ja) | 2003-01-10 | 2004-01-08 | ポリエステル樹脂組成物 |
Country Status (8)
Country | Link |
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US (1) | US8106132B2 (ja) |
EP (1) | EP1582564B1 (ja) |
KR (1) | KR100622905B1 (ja) |
CN (1) | CN100558813C (ja) |
DE (1) | DE602004026992D1 (ja) |
RU (1) | RU2300540C2 (ja) |
TW (1) | TWI247782B (ja) |
WO (1) | WO2004063278A1 (ja) |
Families Citing this family (11)
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WO2005014694A1 (ja) * | 2003-08-12 | 2005-02-17 | Mitsui Chemicals, Inc. | ポリエステル樹脂およびポリエステル樹脂積層容器 |
US8609783B2 (en) | 2005-10-07 | 2013-12-17 | Invista North America S.A.R.L. | Articles having improved gas barrier properties |
JP5063935B2 (ja) * | 2006-06-02 | 2012-10-31 | 東洋製罐株式会社 | 燃料電池カートリッジ用ポリエステル製容器 |
US20100087589A1 (en) * | 2007-01-22 | 2010-04-08 | Hiroyuki Sato | Aromatic polyester resin composition |
US8163866B2 (en) * | 2007-01-22 | 2012-04-24 | Kureha Corporation | Aromatic polyester resin composition |
DE602008004241D1 (de) * | 2008-07-28 | 2011-02-10 | Minera Catalano Aragonesa Samca Sa | Harzzusammensetzung für Lebensmittelbehälter |
WO2010053592A1 (en) * | 2008-11-07 | 2010-05-14 | Colgate-Palmolive Company | Blends of polylactic acid and thermo-plastic polymers for packaging applications |
CA2745989A1 (en) * | 2008-12-15 | 2010-06-24 | Teijin Limited | Resin composition comprising a cyclic carbodiimide |
EP3215550A4 (en) | 2014-11-06 | 2018-06-27 | Teknologian tutkimuskeskus VTT Oy | Method of producing glycolic acid polymers |
RU2622413C2 (ru) * | 2014-11-19 | 2017-06-15 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кабардино-Балкарский государственный университет им. Х.М. Бербекова" (КБГУ) | Полимерная композиция |
RU2585665C1 (ru) * | 2014-12-02 | 2016-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кабардино-Балкарский государственный университет им. Х.М. Бербекова " (КБГУ) | Полиэтилентерефталатная композиция |
Citations (1)
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EP0939094A2 (en) * | 1998-02-27 | 1999-09-01 | Mitsui Chemicals, Inc. | Polyester and process for its preparation |
Family Cites Families (18)
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US3835089A (en) | 1972-06-23 | 1974-09-10 | Gen Electric | Polylactone-modified linear polyesters and molding compositions containing the same |
US4565851A (en) | 1983-04-25 | 1986-01-21 | Eastman Kodak Company | Containers having improved gas barrier properties |
JPH0610254B2 (ja) | 1983-05-24 | 1994-02-09 | 三井石油化学工業株式会社 | 共縮合ポリエステル延伸物の製造方法 |
US4729927A (en) | 1984-11-22 | 1988-03-08 | Teijin Limited | Polyester packaging material |
JPH0721107B2 (ja) | 1984-11-22 | 1995-03-08 | 帝人株式会社 | ポリエステル包装材料 |
JP3731838B2 (ja) * | 1996-04-30 | 2006-01-05 | 株式会社クレハ | ポリグリコール酸配向フィルム及びその製造方法 |
US5916950A (en) * | 1996-07-26 | 1999-06-29 | Mitsui Chemicals, Inc. | Resin composition and molded articles thereof |
KR100451403B1 (ko) * | 1996-09-13 | 2004-10-06 | 구레하 가가쿠 고교 가부시키가이샤 | 가스 배리어성 다층 중공 용기 |
EP1050559B1 (en) * | 1998-11-20 | 2005-10-26 | DAICEL CHEMICAL INDUSTRIES, Ltd. | Reclaimed pet resin composition, molded article thereof, and flame-retardant resin composition and molded article thereof |
JP4530486B2 (ja) * | 1999-06-09 | 2010-08-25 | 三井化学株式会社 | ポリエステル樹脂組成物、その製造方法およびその用途 |
US6455161B1 (en) * | 1999-06-30 | 2002-09-24 | Dow Global Technologies Inc. | Essentially amorphous, non-chlorinated polymeric barrier films and method of using such films |
EP1078949A1 (en) * | 1999-08-26 | 2001-02-28 | Bayer Aktiengesellschaft | Branching of polyamides with esters of carboxylic acid |
BR0015442A (pt) * | 1999-11-09 | 2002-12-24 | Kimberly Clark Co | Polilactidas não trançados biodegradáveis com propriedades de gerenciamento de fluido e produtos absorventes descartáveis contendo os mesmos |
JP2004510868A (ja) * | 2000-10-06 | 2004-04-08 | ザ プロクター アンド ギャンブル カンパニー | 生分解性ポリエステルブレンド組成物を含むプラスチック製品 |
JP4790920B2 (ja) * | 2001-03-07 | 2011-10-12 | 旭化成ケミカルズ株式会社 | 包装材用延伸成形体 |
US20030125508A1 (en) * | 2001-10-31 | 2003-07-03 | Kazuyuki Yamane | Crystalline polyglycolic acid, polyglycolic acid composition and production process thereof |
JP3978012B2 (ja) * | 2001-11-01 | 2007-09-19 | 株式会社クレハ | 多層容器及びその製造方法 |
WO2005014694A1 (ja) * | 2003-08-12 | 2005-02-17 | Mitsui Chemicals, Inc. | ポリエステル樹脂およびポリエステル樹脂積層容器 |
-
2004
- 2004-01-07 TW TW093100313A patent/TWI247782B/zh not_active IP Right Cessation
- 2004-01-08 KR KR1020057011520A patent/KR100622905B1/ko active IP Right Grant
- 2004-01-08 DE DE602004026992T patent/DE602004026992D1/de not_active Expired - Lifetime
- 2004-01-08 US US10/538,750 patent/US8106132B2/en active Active
- 2004-01-08 CN CNB2004800017609A patent/CN100558813C/zh not_active Expired - Lifetime
- 2004-01-08 EP EP04700766A patent/EP1582564B1/en not_active Expired - Lifetime
- 2004-01-08 WO PCT/JP2004/000059 patent/WO2004063278A1/ja not_active Application Discontinuation
- 2004-01-08 RU RU2005125421/04A patent/RU2300540C2/ru active
Patent Citations (1)
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EP0939094A2 (en) * | 1998-02-27 | 1999-09-01 | Mitsui Chemicals, Inc. | Polyester and process for its preparation |
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See also references of EP1582564A4 * |
Also Published As
Publication number | Publication date |
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CN1723246A (zh) | 2006-01-18 |
DE602004026992D1 (de) | 2010-06-17 |
US8106132B2 (en) | 2012-01-31 |
RU2300540C2 (ru) | 2007-06-10 |
US20060217523A1 (en) | 2006-09-28 |
TWI247782B (en) | 2006-01-21 |
EP1582564A1 (en) | 2005-10-05 |
KR100622905B1 (ko) | 2006-09-13 |
TW200422347A (en) | 2004-11-01 |
EP1582564B1 (en) | 2010-05-05 |
CN100558813C (zh) | 2009-11-11 |
RU2005125421A (ru) | 2006-01-27 |
EP1582564A4 (en) | 2006-03-08 |
KR20050089061A (ko) | 2005-09-07 |
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