WO2008004490A1 - Composition de polyester aliphatique et son procédé de fabrication - Google Patents
Composition de polyester aliphatique et son procédé de fabrication Download PDFInfo
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- WO2008004490A1 WO2008004490A1 PCT/JP2007/063014 JP2007063014W WO2008004490A1 WO 2008004490 A1 WO2008004490 A1 WO 2008004490A1 JP 2007063014 W JP2007063014 W JP 2007063014W WO 2008004490 A1 WO2008004490 A1 WO 2008004490A1
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- aliphatic polyester
- acid
- polyester composition
- weight
- molecular weight
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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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/201—Pre-melted 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
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
Definitions
- the present invention relates to a polyglycolic acid-based aliphatic polyester composition having improved crystal characteristics and a method for producing the same.
- Aliphatic polyesters such as polyglycolic acid and polylactic acid have been attracting attention as biodegradable polymer materials with low environmental impact because they are decomposed by microorganisms or enzymes that exist in nature such as soil and sea. .
- aliphatic polyester since aliphatic polyester has biodegradability and absorbability, it is also used as a medical polymer material for surgical sutures and artificial skin.
- polyglycolic acid is excellent in gas barrier properties such as oxygen gas nore property, carbon dioxide gas barrier property and water vapor barrier property, and is excellent in heat resistance and mechanical strength. In the field, it can be used alone or in combination with other resin materials.
- polyglycolic acid exhibits hydrolyzability, it is more resistant to water (for example, by lamination) with a thermoplastic resin material than a single molding material. It is expected to improve characteristics including improved hydrolytic resistance.
- polyglycolic acid since polyglycolic acid is rapidly crystallized, it cannot be stably stretched with the crystallization of polyglycolic acid when it is compounded with other thermoplastic resins, and the thickness of the molded product cannot be stabilized. Problems in terms of molding process or product appearance, such as unevenness or opaqueness (whitening) of the molded product, are likely to occur.
- the polymerization rate decreases to about 1Z 3 compared to the homopolymerization of glycolic acid, and if the proportion of lactic acid increases, the copolymerization rate further decreases, making the copolymer itself virtually impossible.
- the crystallization rate of the product copolymer decreases, the recovery time of the solid copolymer also increases and productivity decreases. Therefore, even in the copolymerization of glycolic acid Z-lactic acid, it is practically difficult to obtain a copolymer containing more than 5% by weight of lactic acid.
- Patent Document 1 WO2003Z037956A1 Publication
- Patent Document 2 WO03Z. 99562A Gazette
- Patent Document 3 Japanese Patent No. 3037431.
- the main purpose of the present invention is, for example, in a single molding or other thermal process.
- Polyglycolic acid-based aliphatic polyester composition with reduced crystallization rate of polydalicolic acid (reduced crystallization rate) which is a problem for compounding (for example, laminating) with plastic resin material, and its It is to provide a manufacturing method.
- polyglycolic acid and polyglycolic acid are melt-kneaded with polydarlicolic acid and polylactic acid having a weight average molecular weight of 50,000 or less in the presence of a heat stabilizer. It has been found that a polyglycolic acid-based aliphatic polyester composition can be obtained in which polylactic acid is well compatible and the crystallization rate of polydaricholic acid is effectively reduced.
- the decrease in the crystallization rate is caused by the crystallization temperature Tc 1 defined as the maximum point of the exothermic peak due to crystallization in the process of heating at a heating rate of 10 ° CZ using a differential scanning calorimeter (DSC). It can be easily determined by ascending.
- the method for producing the aliphatic polyester composition of the present invention is based on the above-mentioned knowledge, and the aliphatic polyester composition of the present invention obtained by caulking contains a heat stabilizer. It is characterized by comprising a melt-kneaded product of polydaricolic acid and polylactic acid having a weight average molecular weight of 50,000 or less.
- a homopolymer including a ring-opened polymer of glycolide (GL), a bimolecular cyclic ester of glycolic acid
- polymer units provided by a comonomer other than the above glycolic acid repeating units Use glycolic acid copolymer containing up to about 50% V. Use of a glycolic acid copolymer containing more comonomer units is not preferred, contrary to the object of the present invention.
- Examples of comonomers that give glycolic acid copolymers together with glycolic acid monomers such as glycolide include ethylene oxalate (ie 1,4 dioxane 2, 3 dione), lactides, and ratatones ( For example, j8—propriolataton, j8—petite rataton, 13— Pivalolataton, ⁇ -buty-mouth rataton, ⁇ -valerolataton, ⁇ -methyl- ⁇ -valerolataton, epsilon prolataton, etc.), carbonates (eg trimethyline carbonate, etc.), ethers (eg 1,3 dioxane etc.), Cyclic monomers such as ether esters (such as dioxanone) and amides (such as ⁇ -force prolatatam); lactic acid, 3-hydroxypropanoic acid, 3-hydroxybutanoic acid, 4-hydroxybutanoic acid, 6-hydroxycaproic acid and the like Dr
- PGA has a molecular weight in a GPC measurement using a hexafluoroisopropanol solvent (Mw (weight average molecular weight) in terms of polymethylmethalate, the same applies unless otherwise specified). Furthermore, it is preferable that it is larger than 100,000, particularly in the range of 120,000 to 500,000.
- the present invention includes strength by melt-kneading PGA and low molecular weight polylactic acid (hereinafter sometimes referred to as “PLA”), by molding alone, or by complex molding with other thermoplastic resin.
- PPA low molecular weight polylactic acid
- the molecular weight of the resulting aliphatic polyester composition is preferably 70,000 or more, more preferably 100,000 or more, and particularly preferably in the range of 120,000 to 500,000.
- the molecular weight of the PGA used in the present invention is also determined from such a viewpoint, and if it is 70,000 or less, it is difficult to obtain a desired composition molecular weight by melt-kneading with a low molecular weight PLA. It is also difficult to obtain the strength of the resulting molded product. On the other hand, if the molecular weight of the PGA is excessive, the power during melt kneading increases, making melt kneading difficult.
- melt viscosity can be used as a measure of the preferred molecular weight of PGA. That, PGA is, 270 ° C, shear rate 122 sec _ 1 at the measured melt viscosity force s 100 ⁇ 20000Pa, s, and more preferably ⁇ I or 100 ⁇ 10000Pa, s, to be particularly 200 to 2000 Pa ⁇ s good Better!/,.
- glycolide ie, cyclic dimer of glycolic acid
- This ring-opening polymerization method is a ring-opening polymerization method by substantially bulk polymerization. Ring-opening polymerization is performed in the presence of a catalyst.
- the amount of residual glycol in the PGA used is preferably suppressed to less than 0.5% by weight. In particular, it should be less than 0.2% by weight.
- the system becomes less than 220 ° C. so that the system becomes a solid phase.
- the temperature is preferably adjusted to 140 to 210 ° C, and more preferably 160 to 190 ° C, and the produced polyglycolic acid is subjected to a step of desorbing and removing the residual glycolide to the gas phase. It is also preferable.
- the above PGA and polylactic acid (PLA) having a molecular weight of 50,000 or less are melt-kneaded. If the molecular weight of PLA exceeds 50,000, the melt-kneaded product with PGA will not be compatible with each other, sea-island phase separation will occur, and the fat will have good moldability as typified by stretchability Group polyester composition cannot be obtained.
- the lower limit of PLA molecular weight is to obtain an aliphatic polyester composition with good compatibility by melt-kneading with PLA. From the viewpoint of molecular weight, there are relatively few restrictions. Can also be used, and lactide, which is a cyclic dimer ester of lactic acid, can also be used.
- the molecular weight of PLA is preferably 1000 or more, more preferably 10,000 or more, and particularly preferably 20,000 or more.
- the low molecular weight PLA as described above can be easily obtained by, for example, bulk polymerization or solution polymerization of latatin (L or D, DZL lattide) alone or a mixture thereof or a mixture thereof with lactic acid.
- PLA with a relatively high molecular weight in the range of 50,000 or less is obtained by dissolving a commercially available high molecular weight (usually about 200,000) PLA with a low molecular weight agent such as alcohol or water. It can be easily obtained by melting and kneading to lower the molecular weight.
- the main object of the present invention is to improve characteristics including a decrease in the crystallization rate of PGA by blending low molecular weight PLA with PGA. Therefore, PGA is preferably 50% by weight or more based on the total amount of PGA and PLA.
- PGA is preferably 50% by weight or more based on the total amount of PGA and PLA.
- a significant decrease in the crystallization rate represented by a significant increase in the crystallization temperature Tel (2 ° C or higher) during the temperature rise process for example, a decrease in Tel of 3 ° C reduces the crystallization rate to about 2Z3. (Corresponding to a decrease) has already developed at a level of 1% by weight of PLA (see Example 1 below).
- the PGAZPLA combination ratio (weight ratio; hereinafter the same) in the present invention is preferably in the range of 99Zl to 50Z50.
- an aliphatic polyester composition as a molding material that is relatively transparent and compatible can be obtained (Examples 1 to 5 below).
- gas barrier property which is one of the important features of PGA, MXD6 nylon (polymetaxylylene adipamide), which is known as a gas barrier resin material
- melt kneading of PGA and low molecular weight is performed in the presence of a heat stabilizer.
- the heat stabilizer is added to suppress the decrease in the molecular weight of the high molecular weight PGA during melt-kneading. If this is not added, the decrease in the crystallization speed is obtained by the PLA combination. Even so, a decrease in properties such as strength due to a decrease in molecular weight of the resulting aliphatic polyester composition cannot be ignored.
- the above-mentioned effect can be obtained to some extent by mixing the heat stabilizer simultaneously with PGA and PLA. However, prior to melt-kneading with PLA, the heat stabilizer is previously melt-kneaded with PGA. In order to effectively use the heat stabilizer effect, it is preferable to use a compound.
- heat stabilizer those generally used as heat stabilizers for aliphatic polyesters are used.
- R 1 and R 2 are the same or different hydrocarbon groups, but preferably both are aryl groups substituted with 1 to 3 alkyl groups having 1 to 12 carbon atoms, particularly phenyl groups (its preferred Examples include 2, 6_di-tert-butyl-4-methylphenyl group, 2,4-di-tert-butylphenyl group), or long-chain alkyl groups having 8 to 24 carbon atoms (eg, stearyl group).
- R 1 and R 2 are preferably 2,6-di-tert-butyl group or octadecyl group.
- R 3 is a long-chain alkyl group having 8 to 24 carbon atoms (preferably a stearyl group), n is an average number of 1 to 2) and at least one long group A phosphate ester having a chain alkyl group is preferably used.
- the blending amount of these heat stabilizers is 0.003 to 3 parts by weight, preferably 0.005 to 1 part by weight, and more preferably 0.01 to 0.5 parts by weight per 100 parts by weight of PGA. If the amount is less than 0.003 parts by weight, the effect of addition is insufficient. If the amount exceeds 3 parts by weight, the effect may be saturated or the transparency of the resulting composition may be impaired.
- the melt viscosity retention after 30 minutes at 260 ° C. is 70. It is preferable to use those having a content of at least%.
- the aliphatic polyester composition of the present invention preferably further includes a carboxyl group sealing agent to improve the water resistance of the resulting molded article. .
- the carboxyl group-capping agent particularly improves the water resistance of PGA by acting on the terminal carboxyl group in PGA and PLA and inhibiting its hydrolysis promoting action.
- those known as water resistance improvers for aliphatic polyesters such as PLA can be generally used.
- monocarboxylic compounds such as N, N-2,6-disopropylphenolcarbodiimide can be used.
- Carbodiimide compounds including carbodiimides and polycarbodiimide compounds; 2, 2 '—m-phenol-bis (2-oxazoline), 2, 2' —p phenol-bis (2-oxazoline), 2-phenol-loop 2— Oxazoline compounds such as oxazoline and styrene'-isopropyl 2-oxazoline; 2-methoxy-5, 6 dihydro 4H— 1, 3 Oxazine compounds such as oxazine; And epoxy compounds. Of these, carposimide compounds and epoxy compounds are preferable. These carboxyl group-capping agents can be used in combination of two or more as required. For 100 parts by weight of PGA resin, 0.01 to: LO parts by weight, and further 0.1 It is preferable to blend in a proportion of ⁇ 2 parts by weight, especially 0.2 to 1 part by weight.
- the aliphatic polyester composition of the present invention includes an inorganic filler, a light stabilizer, a moisture-proofing agent, a waterproofing agent, a water-repellent agent, a lubricant, and the like, as long as the object of the present invention is not impaired.
- Various additives such as a release agent, a coupling agent, a pigment, and a dye can be added. These various additives are used in effective amounts according to their intended purpose.
- the aliphatic polyester composition of the present invention can be obtained by melt-kneading the above-mentioned PGA, preferably preliminarily blended with a heat stabilizer, low molecular weight PLA, and other additives added as necessary.
- melt-kneading any apparatus can be used as long as a uniform melt-kneading effect between PGA and low molecular weight PLA can be obtained.
- a twin-screw kneading extruder that has a great effect of dispersing and hardly causing PLA aggregation is preferably used.
- melt kneading in a twin-screw kneading extruder is performed at 230 to 270 ° C, preferably 240 to 26.
- the aliphatic polyester composition of the present invention having good compatibility between PGA and low molecular weight PLA can be obtained.
- the aliphatic polyester composition of the present invention obtained by caulking can possess characteristic properties as described in the above section (PGAZPLA blending ratio) by changing the blending ratio of PGAZPLA.
- thermoplastic resins with various thermal properties are also improved in the composite (for example, lamination) with other thermoplastic resin materials. It can be easily achieved. Even in the range of PGAZPLA ratio exceeding 95Z5 and up to 50/50, further improvement of moldability including stretchability and improvement of water resistance can be obtained.
- the aliphatic polyester composition of the present invention utilizes a reduced and widely controllable crystallization rate compared to PGA, and can be used in a variety of moldings, either alone or in combination with other thermoplastic resin materials. Applicable to law.
- a roll method For example, a roll method, a tenter method, an inflation method, a filament molding, an injection molding into an arbitrary shape, etc. for molding into a film or a sheet.
- the aliphatic polyester composition of the present invention has a crystallization rate that can be controlled in a wide range. It is suitable for compounding with other thermoplastic resin materials having various crystallization speeds or melt-solidification characteristics.
- the composite layer include a laminated film or sheet having the aliphatic polyester composition of the present invention as a single layer, preferably an inner layer or a core layer, a core-sheath type laminated filament, and a co-injection molded article.
- examples include acid esters, polystrength prolatatones, polyamides, ethylene-butyl alcohol copolymers (EVOH), and polyvinylidene chloride (PVDC).
- the reduced and widely controlled crystallization rate of the aliphatic polyester composition of the present invention is not limited to melt molding, but also to secondary molding involving stretching of a single or composite molded body. However, it provides a very suitable formability.
- Sample PGA oil (composition) About lOOmg, add 2g of dimethyl sulfoxide containing 0.2gZl of the internal standard 4 clonal benzophenone, and dissolve it by heating at 150 ° C for about 5 minutes. After cooling to room temperature, filtration is performed. 1 ⁇ l of the solution was sampled and injected into a gas chromatography (GC) apparatus for measurement. From the numerical value obtained by this measurement, the amount of glycolide was calculated as the weight% contained in the polymer.
- GC analysis conditions are as follows: Device: “GC—2010” manufactured by Shimadzu Corporation
- Vaporization chamber temperature 180 ° C
- FID flame ionization detector
- DSC differential scanning calorimeter
- a 2g sample was subjected to a heat press set at 280 ° C ("AF-50” manufactured by Shindo Metal Industries Co., Ltd.)
- Amorphous press sheet obtained by preheating at 280 ° C for 3 minutes, applying a pressure of 5 MPa for 1 minute, and then entrenching in an ice water bath adjusted to 5 ° C or less, 10 ° CZ min.
- Tel was obtained as the maximum temperature of the exothermic peak due to crystallization in the process of heating at a heating rate of 10 ° C
- Tc2 was obtained as the maximum temperature of the exothermic peak due to crystallization in the process of cooling at a cooling rate of 10 ° CZ. .
- PGA sample 2g is put into rheometer (TA Instruments "ARES Rheometer"), N atmosphere, 260 ° C for 30 minutes
- the melt viscosity was measured continuously, and the MV retention was determined as the ratio (%) of the melt viscosity after 30 minutes to the initial melt viscosity.
- the transparency of the mass after melt-kneading or the polymerization product mass was visually determined using an amorphous press sheet similar to that formed for the above-described Tel measurement.
- the sample was placed on a dedicated petri dish and the color value was measured.
- the standard light C was used, the reflected light was measured in the field of 2 degrees, and the average value of three measurements was obtained. The smaller the value, the less colored (yellowness).
- the oxygen permeability is measured under the condition of 23 ° CZ90% RH using the oxygen permeability measuring device ("OX-TRAN2 Z21" manufactured by MOCON), and the standard is 20 ⁇ m in thickness. It was calculated as oxygen gas permeability in the unit of ccZm 2 ZdayZatm.
- the material that can be blow-molded was designated as “A”, and the product that burst during blow-molding or produced a large thickness spot (appropriately weak when touched by hand) was designated as “C”.
- Solidified pulverized product of PGA obtained by bulk polymerization
- approximately equimolar mixture of mono- and distearyl acid phosphate (“AX-71” manufactured by Asahi Denka Kogyo Co., Ltd.)
- the molten strand was taken and solidified with a cooling roll, and then pelletized with a pelletizer, and the three types of PGA raw materials A, B, and C having different molecular weights (Mw) shown in Table 1 below were recovered.
- the sheet was set in a simple blow molding machine, preheated at 70 ° C for 1 minute, and then blown until the area magnification was about 4 x 4 times to produce a stretched film. [0059] [Example 2]
- the product was evaluated by melt-kneading in the same manner as in Example 1 except that the charged amount was 29.4 g of PGA raw material and 6 g of PLA raw material DO.
- the product was evaluated by melt-kneading in the same manner as in Example 1 except that the charged amount was 28.5 g of PGA raw material A, 5 g of PLA raw material Dl. And the kneading time was 15 minutes.
- the press sheet was observed with an electron microscope (SEM), but no phase separation (sea-island structure) was observed, and it was observed that the press sheets were compatible.
- the product was evaluated by melt-kneading in the same manner as in Example 1 except that the average residence time was 10 minutes.
- Example 2 All the products were melt-kneaded in the same manner as in Example 1 except that the charging amount was 24 g PGA raw material, 6 g PLA raw material, and the kneading time was 30 minutes, and the products were evaluated.
- PLA pellet (raw material F) l.5g was dry blended with 28.5g of PGA pellets (raw material A), and the whole amount was put into a lab plast mill set at 240 ° C and melt-kneaded. After 60 minutes, the polymer product was removed in the molten state. The recovery rate at that time was almost 100%.
- the press sheet was observed with an electron microscope (SEM), and phase separation (sea-island structure) was observed.
- the sheet was set in a simple blow molding machine, preheated at 70 ° C for 1 minute, and then blown, but it burst at a low magnification, and was unable to produce a stretched film.
- the product was evaluated by melt-kneading in the same manner as in Example 3 except that PGA raw material C (without heat stabilizer) was used instead of PGA raw material A.
- the YI of the plate was 43, and the product was colored.
- the YI of the plate was 24, and no coloring of the product was observed.
- the sheet was set in a simple blow molding machine, preheated at 70 ° C for 1 minute, and then blown, but it burst at a low magnification, and was unable to produce a stretched film.
- the supply of the polymer was continued with stirring, the melt of the reaction mixture was drawn out from the reactor discharge section at an average residence time of 10 minutes, and the jacket temperature was set to 50 ° C.
- the shaft reactor was continuously fed.
- the supply of the polymer was continued while stirring, and an attempt was made to extract the reaction mixture in a solid state from the reactor discharge section with an average residence time of 10 minutes.
- the recovery rate was 85%.
- Table 2 summarizes the outline of the melt-kneading (Examples and Comparative Examples) and polymerization (Reference Examples) and the evaluation results of the products.
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07767807.6A EP2045292B1 (en) | 2006-07-07 | 2007-06-28 | Aliphatic polyester composition and method for producing the same |
JP2008523662A JP5291461B2 (ja) | 2006-07-07 | 2007-06-28 | 脂肪族ポリエステル組成物およびその製造方法 |
CN2007800255564A CN101484528B (zh) | 2006-07-07 | 2007-06-28 | 脂肪族聚酯组合物及其制造方法 |
ES07767807.6T ES2445337T3 (es) | 2006-07-07 | 2007-06-28 | Composición de poliéster alifático y método para producir la misma |
US12/308,891 US8003721B2 (en) | 2006-07-07 | 2007-06-28 | Aliphatic polyester composition and method for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006-188004 | 2006-07-07 | ||
JP2006188004 | 2006-07-07 |
Publications (1)
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WO2008004490A1 true WO2008004490A1 (fr) | 2008-01-10 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/063014 WO2008004490A1 (fr) | 2006-07-07 | 2007-06-28 | Composition de polyester aliphatique et son procédé de fabrication |
Country Status (6)
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US (1) | US8003721B2 (ja) |
EP (1) | EP2045292B1 (ja) |
JP (1) | JP5291461B2 (ja) |
CN (1) | CN101484528B (ja) |
ES (1) | ES2445337T3 (ja) |
WO (1) | WO2008004490A1 (ja) |
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JP7308264B2 (ja) * | 2018-10-29 | 2023-07-13 | プージン ケミカル インダストリー カンパニー リミテッド | ポリグリコライドコポリマー組成物及びその製造方法 |
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- 2007-06-28 EP EP07767807.6A patent/EP2045292B1/en not_active Not-in-force
- 2007-06-28 ES ES07767807.6T patent/ES2445337T3/es active Active
- 2007-06-28 WO PCT/JP2007/063014 patent/WO2008004490A1/ja active Application Filing
- 2007-06-28 JP JP2008523662A patent/JP5291461B2/ja not_active Expired - Fee Related
- 2007-06-28 CN CN2007800255564A patent/CN101484528B/zh not_active Expired - Fee Related
- 2007-06-28 US US12/308,891 patent/US8003721B2/en not_active Expired - Fee Related
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Cited By (11)
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WO2010038537A1 (ja) * | 2008-09-30 | 2010-04-08 | 株式会社クレハ | ポリグリコール酸系樹脂組成物及びその成形体 |
JP2010084001A (ja) * | 2008-09-30 | 2010-04-15 | Kureha Corp | ポリグリコール酸系樹脂組成物及びその成形体 |
EP2336244A1 (en) * | 2008-09-30 | 2011-06-22 | Kureha Corporation | Polyglycol acid resin composition and molded body thereof |
EP2336244A4 (en) * | 2008-09-30 | 2014-12-10 | Kureha Corp | POLYGLYCOLIC ACID RESIN COMPOSITION AND FORM BODY THEREOF |
US9156953B2 (en) | 2008-09-30 | 2015-10-13 | Kureha Corporation | Polyglycolic acid resin composition and molded article therefrom |
WO2010110425A1 (ja) * | 2009-03-26 | 2010-09-30 | 株式会社クレハ | ポリグリコール酸系樹脂組成物の製造方法 |
WO2011016321A1 (ja) * | 2009-08-06 | 2011-02-10 | 株式会社クレハ | ポリグリコール酸系繊維およびその製造方法 |
US20120130024A1 (en) * | 2009-08-06 | 2012-05-24 | Kureha Corporation | Polyglycolic acid-based fibers and method for producing same |
JP5535216B2 (ja) * | 2009-08-06 | 2014-07-02 | 株式会社クレハ | ポリグリコール酸系繊維およびその製造方法 |
JP2015504382A (ja) * | 2011-11-21 | 2015-02-12 | クライオバック・インコーポレイテツド | ポリグリコール酸に基づくフィルム |
JP2014167186A (ja) * | 2013-02-28 | 2014-09-11 | Toray Ind Inc | ポリ乳酸とポリグリコール酸からなる海島型複合繊維 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008004490A1 (ja) | 2009-12-03 |
CN101484528A (zh) | 2009-07-15 |
EP2045292B1 (en) | 2014-01-22 |
US8003721B2 (en) | 2011-08-23 |
EP2045292A4 (en) | 2012-05-30 |
EP2045292A1 (en) | 2009-04-08 |
JP5291461B2 (ja) | 2013-09-18 |
ES2445337T3 (es) | 2014-03-03 |
CN101484528B (zh) | 2011-12-07 |
US20090275692A1 (en) | 2009-11-05 |
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