WO2004041917A1 - ポリマーの分解方法 - Google Patents
ポリマーの分解方法 Download PDFInfo
- Publication number
- WO2004041917A1 WO2004041917A1 PCT/JP2003/014136 JP0314136W WO2004041917A1 WO 2004041917 A1 WO2004041917 A1 WO 2004041917A1 JP 0314136 W JP0314136 W JP 0314136W WO 2004041917 A1 WO2004041917 A1 WO 2004041917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- polymer
- decomposition
- subcritical
- soluble base
- Prior art date
Links
Classifications
-
- 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
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/14—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a method for decomposing a polymer using subcritical water or supercritical water, and particularly to a method for decomposing plastic waste.
- Landfill disposal also has problems of difficulty in securing land for landfill and instability of the ground after landfill. Damage of the furnace in incineration, there is a problem that occurs and co 2 emission of hazardous gases and offensive odors.
- Japanese Patent Application Laid-Open No. 5-310100 discloses a method of decomposing plastic waste by a reaction using supercritical water or subcritical water as a reaction medium and recovering decomposition products.
- Japanese Patent Application Laid-Open No. 10-878772 discloses that the plastic component of fiber reinforced plastic used for various structural materials is decomposed by using supercritical water or subcritical water, Alternatively, it discloses a method for recovering and recycling fibers such as carbon fibers.
- the monomer or oligomer itself generated by the decomposition of (polymer) is also decomposed by subcritical water or supercritical water, or is reduced by a side reaction.
- plastic degradation by conventional subcritical or supercritical water The products are expected to be mainly reused for liquid fuels.
- an object of the present invention is to provide a method for decomposing a polymer, which can recover a monomer or oligomer recyclable as a raw material in a high yield.
- An object of the present invention is to provide a method for decomposing a polymer into a monomer or an oligomer by hydrolysis using subcritical water or supercritical water, wherein at least a part of the polymer has structural units derived from an organic acid in its molecular structure.
- the method is characterized by contacting the polymer with subcritical water or supercritical water in the presence of a poorly water-soluble base. According to the method of the present invention, a monomer or oligomer that can be reused as a polymer (plastic) raw material can be recovered in high yield.
- FIG. 1 is a diagram showing an example of a plant system for decomposing a polymer by the method of the present invention.
- FIG. 2 is a diagram showing the test apparatus used in the examples and comparative examples.
- the present invention relates to a method for decomposing a polymer into a monomer or an oligomer by hydrolysis using subcritical water or supercritical water, wherein at least a part of the polymer is derived from an organic acid in a molecular structure. Wherein the polymer is brought into contact with subcritical water or supercritical water in the presence of a poorly water-soluble base.
- the supercritical water means water that is in a state exceeding a critical point (critical temperature: 37.4 ° C., critical pressure: 22. IMP a).
- the subcritical water in the present invention means water in a state below the critical point and in the vicinity of the critical point (preferably 170 to 374 ° C).
- a polymer containing a structural unit derived from an organic acid in a molecular structure such as a polyester or a polyamide, is converted into a subcritical water in the presence of a poorly water-soluble base.
- monomers or oligomers such as organic acids and alcohols or amines, which can be reused in polymer (plastic) synthesis can be recovered in high yield (see Examples below). ).
- a polymer for example, polyester or polyamide
- a structural unit derived from an organic acid in its molecular structure is hydrolyzed with subcritical water or supercritical water to produce a desired monomer or oligomer (for example, carboxylic acid or carboxylic acid).
- a desired monomer or oligomer for example, carboxylic acid or carboxylic acid.
- Alcohol or amine but not all polymers can be broken down into the desired monomer or oligomer due to thermal decomposition of the polymer.
- Organic acids, such as carboxylic acids, generated by hydrolysis are also decomposed or converted to other substances by further thermal decomposition with subcritical water or supercritical water.
- the reaction partner of the organic acid in the polymer for example, alcohol or amine
- an acid H +
- an alcohol forms a carbocation, and through this carbocation formation, an alkene or dimerization occurs.
- organic acids themselves can form and form poorly water-soluble salts with poorly water-soluble bases in subcritical or supercritical water.
- the organic acid salt It is thought that the decomposition of organic acids is suppressed by precipitation in subcritical or supercritical water.
- Polymers that degrade according to the invention include polymers that generate organic acids upon hydrolysis, such as polyesters or polyamides, preferably polyesters.
- hydrolysis is considered to be dominant.However, since thermal decomposition is also performed, according to the present invention, a polymer that cannot be hydrolyzed under ordinary conditions, The crosslinked polymer can also decompose to recover monomers or oligomers.
- the polymers that degrade according to the present invention include uncrosslinked polymers (eg, polyethylene terephthalate) and polymers or crosslinked polymers (eg, crosslinked polyesters, which are, for example, unsaturated polyesters crosslinked with a crosslinking agent, such as styrene). Can be included.
- uncrosslinked polymers eg, polyethylene terephthalate
- crosslinked polymers eg, crosslinked polyesters, which are, for example, unsaturated polyesters crosslinked with a crosslinking agent, such as styrene.
- An object of the present invention is to recycle by predominantly hydrolyzing with subcritical or supercritical water, suppressing side reactions caused by organic acids, and suppressing decomposition of organic acids themselves.
- the goal is to recover high-quality monomers, such as organic acids and alcohols, in high yield.
- the polymer decomposed by the present invention is a polymer having no structural unit derived from an organic acid, such as a copolymer containing a hydrolyzable structural unit and a non-hydrolyzable structural unit, to the extent that the purpose is not impaired. And Z or a non-hydrolysable polymer.
- the polymers which decompose according to the invention preferably comprise, as organic acid-free polymers, hydrolysable polymers, for example polyethers. Because they can also yield monomers that can be reused for polymer synthesis by hydrolysis.
- the polymer which decomposes according to the invention is preferably a polyester, more preferably a polyester which does not contain chlorine in its molecular structure. This is because, if the polymer decomposed by the present invention contains a chlorine-containing polymer, chlorine and then hydrochloric acid are formed in subcritical water or supercritical water. Hydrochloric acid is undesirable because it reduces the monomer recovery rate by its side reaction.
- the base used in the present invention is a poorly water-soluble base, for example, Ca 2 C 3 . This is because the use of a water-soluble base such as KOH or NaOH makes it impossible to recover the organic acid in high yield (see Comparative Examples 2 and 3 described later).
- the poorly water-soluble base in the present invention means a base other than a water-soluble base (for example, KOH or NaOH), particularly a base having a solubility of 0.5 gZ water at 25 ° C of 100 g or less.
- the value of the solubility of the base indicates the amount (g) of the base dissolved in 100 g of water at 25 ° C.
- Poorly water-soluble bases of the invention at 25 ° C, preferably 1.0 X 10- 4 ⁇ 0. 5 g ⁇ 1 00 g, more preferably 8. 0 X 1 0- 4 ⁇ 0.5 g Z water 1 00 g It has a solubility of.
- a poorly water-soluble base having a solubility in such a range the effects of the present invention can be preferably achieved, and the decomposed monomer or oligomer can be recovered in higher yield.
- the poorly water-soluble base of the present invention is preferably selected from, but not limited to, compounds of Group 2 metals, more preferably compounds of Ca or Ba.
- Examples of poorly water-soluble bases include calcium carbonate (C a C0 3: 1.4 X 10- 3 g / water 100 g), carbonate Ba Riumu (B a C0 3: 2.
- poorly water-soluble bases described above are generally weakly basic, they can be handled more safely than when a strong base such as KOH or NaOH is used, and there are also problems such as corrosion of equipment. It ’s hard to happen.
- poorly water-soluble bases are generally weakly basic, and organic acids that are decomposition products, for example, cataphoric acid, are also generally weakly acidic. Therefore, mixtures of poorly water-soluble bases and organic acids with their salts Can have a buffering effect. With this buffering action, subcritical water or supercritical water Abrupt pH changes in critical water can be avoided. This may also contribute to a high recovery rate of the monomer or oligomer in the polymer decomposition using subcritical water or supercritical water of the present invention.
- the amounts of water and the poorly water-soluble base used can vary depending on the type and amount of the polymer to be decomposed. However, based on 100 parts by weight of the polymer, preferably 100 to 500 parts by weight of water and 500 to 200 parts by weight of Z or a poorly water-soluble base are used.
- the decomposition time of the polymer in the present invention can vary depending on conditions such as the decomposition temperature.
- the degradation time of the polymers of the invention is generally between 10 and 40 minutes. From a cost standpoint, it is desirable that the decomposition time be short.
- the polymer decomposition temperature is preferably from 170 to 450 ° C, more preferably from 200 to 374 ° C.
- a decomposition temperature of 170 ° C or higher the polymer can be decomposed more quickly.
- a decomposition temperature of 450 ° C. or lower the effect of thermal decomposition can be suppressed, and the recovery rate of the monomer or oligomer can be increased.
- the pressure at which the polymer is decomposed in the present invention is a force that can be changed according to the decomposition temperature, and is preferably 4 to 5 OMPa.
- reusable monomers or oligomers such as organic acids and alcohols, can be recovered, for example, as follows:
- a water-insoluble organic solvent is added to the mixture to remove by-products from the mixture of the decomposition products and water. After stirring these, they are allowed to stand, and the organic phase and the aqueous phase are separated.
- the aqueous phase contains organic acid salts and alcohols.
- An acid is added to the aqueous phase to produce an organic acid from the organic acid salt.
- the water is distilled off from the aqueous phase, and the aqueous phase is concentrated to almost dryness.
- an organic solvent is added. Organic acids and alcohols are dissolved in an organic solvent, and the organic solution is filtered to remove insolubles (for example, salts of the above acids added to liberate the organic acid).
- the organic solution is distilled to fractionate the alcohol.
- Organic acids are obtained as residues of organic solutions.
- FIG. 1 shows a plant system for decomposing a polymer by the method of the present invention. An example is shown.
- the polymer and the poorly water-soluble base are added to the decomposition reaction tank 1.
- Water is added from the water tank 2 to the decomposition reaction tank 1 using the high-pressure pump 3.
- the amount of water added to the decomposition reaction tank 1 is desirably 50% by volume or less of the volume of the decomposition reaction tank 1.
- the decomposition reaction tank 1 is closed by closing the valve 4 and the pressure reducing valve 5.
- the decomposition reaction tank 1 is externally heated by the constant temperature bath 6, and the temperature in the decomposition reaction tank 1 is raised to a predetermined temperature of 250 to 450 ° C, and the water in the decomposition reaction tank 1 is in a subcritical state. Or Hold in a supercritical state for a predetermined time to decompose the polymer. Thereafter, the pressure in the decomposition reaction tank 1 is reduced by adjusting the pressure reducing valve 5, and the temperature in the decomposition reaction tank 1 is reduced to a predetermined temperature of 100 to 200 ° C by adiabatic expansion or external cooling. Let it. Next, the decomposition product of the polymer is introduced into the still 7 from the decomposition reaction tank 1 together with water.
- a decomposition product containing a monomer or an oligomer, for example, an organic acid and an alcohol in the form of a salt is recovered from the bottom of the still 7 via the condenser 8 into the recovery tank 10.
- Organic salts are mainly recovered as solids.
- Water is collected from the top of the still 7 through the condenser 9 to the water recovery tank 11, sent to the water tank 2 by the pump 12, and reused.
- Example 2 The same procedure as in Example 1 was repeated except that 2 g of barium carbonate was used instead of calcium carbonate as the poorly water-soluble base. The content of the reaction tube 13 did not show any undecomposed trees, and the decomposition rate was almost 100%. Table 1 shows the results of Example 2.
- Example 3 The same procedure as in Example 1 was repeated, except that 2 g of calcium hydroxide was used instead of calcium carbonate as the poorly water-soluble base. No undecomposed resin remained in the contents of the reaction tube 13 and the decomposition rate was almost 100%. Table 1 shows the results of Example 3.
- Example 2 shows the results of Comparative Example 1.
- Example 2 The same procedure as in Example 1 was repeated, except that 2 g of potassium hydroxide was used instead of calcium carbonate as the poorly water-soluble raw base. No undecomposed resin remained in the contents of the reaction tube 13, and the decomposition rate was almost 100%. Table 2 shows the results of Comparative Example 2.
- Example 2 The same procedure as in Example 1 was repeated, except that 2 g of sodium hydroxide was used instead of calcium carbonate as the poorly water-soluble base. No undecomposed resin remained in the contents of the reaction tube 13 and the decomposition rate was almost 100%. Table 2 shows the results of Comparative Example 3.
- the decomposition reaction was carried out by immersing the reaction tube 13 in a thermostatic bath 14 at 360 ° C for 2 minutes, and only propylene dalicol was determined by gas chromatography as the amount of dihydric alcohol in the aqueous phase. Except for this, the same procedure as in Comparative Example 1 was repeated. The undecomposed resin remained in the contents of the reaction tube 13 and the decomposition rate was calculated. Table 2 shows the results of Comparative Example 5. (table 1 )
- Tables 1 and 2 show that in the decomposition of polyester with subcritical water, the recovery of dihydric alcohols and organic acids in Examples 1 to 3 using poorly water-soluble bases was as follows. It is confirmed that the concentration is higher than Comparative Examples 2 and 3 using a water-soluble base. Further, by comparing Examples 4 and 5 with Comparative Examples 4 and 5, it is confirmed that the use of the poorly water-soluble base promotes the decomposition of the polyester and improves the decomposition rate.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/533,432 US7696378B2 (en) | 2002-11-07 | 2003-11-06 | Depolymerization process |
EP20030810619 EP1580222B1 (en) | 2002-11-07 | 2003-11-06 | Depolymerization process |
AU2003277574A AU2003277574A1 (en) | 2002-11-07 | 2003-11-06 | Depolymerization process |
JP2005502154A JP4297112B2 (ja) | 2002-11-07 | 2003-11-06 | ポリマーの分解方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-324398 | 2002-11-07 | ||
JP2002324398 | 2002-11-07 | ||
JP2003281994 | 2003-07-29 | ||
JP2003-281994 | 2003-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004041917A1 true WO2004041917A1 (ja) | 2004-05-21 |
Family
ID=32314067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/014136 WO2004041917A1 (ja) | 2002-11-07 | 2003-11-06 | ポリマーの分解方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7696378B2 (ja) |
EP (1) | EP1580222B1 (ja) |
JP (1) | JP4297112B2 (ja) |
AU (1) | AU2003277574A1 (ja) |
WO (1) | WO2004041917A1 (ja) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005054082A (ja) * | 2003-08-05 | 2005-03-03 | Matsushita Electric Works Ltd | プラスチックの分解・回収方法 |
WO2005092962A1 (ja) * | 2004-03-26 | 2005-10-06 | Matsushita Electric Works, Ltd. | プラスチックの分解方法 |
JP2006008985A (ja) * | 2004-05-26 | 2006-01-12 | Matsushita Electric Works Ltd | プラスチックの分解・分離方法 |
JP2006008984A (ja) * | 2004-05-26 | 2006-01-12 | Matsushita Electric Works Ltd | プラスチックの分解・分離方法 |
JP2006206638A (ja) * | 2005-01-25 | 2006-08-10 | Matsushita Electric Works Ltd | 人造大理石の分解方法 |
JP2006232942A (ja) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006232934A (ja) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Works Ltd | プラスチックの分解・回収方法 |
JP2006241380A (ja) * | 2005-03-04 | 2006-09-14 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006273958A (ja) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006273959A (ja) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JPWO2005103131A1 (ja) * | 2004-04-23 | 2008-03-13 | 松下電工株式会社 | 熱硬化性樹脂の分解方法 |
JP2009203291A (ja) * | 2008-02-26 | 2009-09-10 | Panasonic Electric Works Co Ltd | 分解装置と分解処理方法 |
JP2010163620A (ja) * | 2004-05-26 | 2010-07-29 | Panasonic Electric Works Co Ltd | プラスチックの分解・分離方法 |
US8044148B2 (en) | 2004-11-25 | 2011-10-25 | Panasonic Electric Works Co., Ltd. | Modified styrene-maleic acid copolymer and use thereof |
US8188154B2 (en) * | 2004-11-09 | 2012-05-29 | Sumitomo Bakelite Company, Ltd. | Decomposition reaction apparatus, system for producing raw material for recycled resin composition, method for producing raw material for recycled resin composition, raw material for recycled resin composition, and formed article |
WO2015137366A1 (ja) * | 2014-03-11 | 2015-09-17 | 日東電工株式会社 | ポリエステル系樹脂の加水分解物の製造装置 |
WO2015137365A1 (ja) * | 2014-03-11 | 2015-09-17 | 日東電工株式会社 | ポリエステル系樹脂の加水分解物の製造方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009082009A1 (ja) * | 2007-12-26 | 2009-07-02 | Panasonic Electric Works Co., Ltd. | 熱硬化性樹脂の分解および分解生成物の回収方法 |
US8653150B2 (en) * | 2008-03-26 | 2014-02-18 | Panasonic Corporation | Method for decomposing thermoset resin and recovering decomposition product |
US10259922B2 (en) | 2013-11-06 | 2019-04-16 | The Board Of Trustees Of The Leland Stanford Junior University | Methods for modifying a hydrophobic polymer surface and devices thereof |
KR102359898B1 (ko) * | 2017-10-23 | 2022-02-07 | 주식회사 엘지화학 | 증류 장치 및 이를 이용하는 저비점 물질의 분리 방법 |
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2003
- 2003-11-06 AU AU2003277574A patent/AU2003277574A1/en not_active Abandoned
- 2003-11-06 WO PCT/JP2003/014136 patent/WO2004041917A1/ja active Application Filing
- 2003-11-06 EP EP20030810619 patent/EP1580222B1/en not_active Expired - Lifetime
- 2003-11-06 JP JP2005502154A patent/JP4297112B2/ja not_active Expired - Fee Related
- 2003-11-06 US US10/533,432 patent/US7696378B2/en not_active Expired - Fee Related
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Cited By (23)
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JP2005054082A (ja) * | 2003-08-05 | 2005-03-03 | Matsushita Electric Works Ltd | プラスチックの分解・回収方法 |
WO2005092962A1 (ja) * | 2004-03-26 | 2005-10-06 | Matsushita Electric Works, Ltd. | プラスチックの分解方法 |
JP2010007074A (ja) * | 2004-03-26 | 2010-01-14 | Panasonic Electric Works Co Ltd | プラスチックの分解方法 |
US7601760B2 (en) | 2004-03-26 | 2009-10-13 | Matsushita Electric Works, Ltd. | Method of decomposing plastic |
JPWO2005103131A1 (ja) * | 2004-04-23 | 2008-03-13 | 松下電工株式会社 | 熱硬化性樹脂の分解方法 |
JP4495628B2 (ja) * | 2004-05-26 | 2010-07-07 | パナソニック電工株式会社 | プラスチックの分解・分離方法 |
JP2006008984A (ja) * | 2004-05-26 | 2006-01-12 | Matsushita Electric Works Ltd | プラスチックの分解・分離方法 |
JP2010163620A (ja) * | 2004-05-26 | 2010-07-29 | Panasonic Electric Works Co Ltd | プラスチックの分解・分離方法 |
JP2006008985A (ja) * | 2004-05-26 | 2006-01-12 | Matsushita Electric Works Ltd | プラスチックの分解・分離方法 |
JP4495629B2 (ja) * | 2004-05-26 | 2010-07-07 | パナソニック電工株式会社 | プラスチックの分解・分離方法 |
US8188154B2 (en) * | 2004-11-09 | 2012-05-29 | Sumitomo Bakelite Company, Ltd. | Decomposition reaction apparatus, system for producing raw material for recycled resin composition, method for producing raw material for recycled resin composition, raw material for recycled resin composition, and formed article |
US8044148B2 (en) | 2004-11-25 | 2011-10-25 | Panasonic Electric Works Co., Ltd. | Modified styrene-maleic acid copolymer and use thereof |
CN101065405B (zh) * | 2004-11-25 | 2012-05-09 | 松下电工株式会社 | 改性苯乙烯-马来酸共聚物及其用途 |
JP2006206638A (ja) * | 2005-01-25 | 2006-08-10 | Matsushita Electric Works Ltd | 人造大理石の分解方法 |
JP2006232942A (ja) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006232934A (ja) * | 2005-02-23 | 2006-09-07 | Matsushita Electric Works Ltd | プラスチックの分解・回収方法 |
JP2006241380A (ja) * | 2005-03-04 | 2006-09-14 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006273959A (ja) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP2006273958A (ja) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | プラスチックの分解方法 |
JP4699785B2 (ja) * | 2005-03-28 | 2011-06-15 | パナソニック電工株式会社 | プラスチックの再生方法 |
JP2009203291A (ja) * | 2008-02-26 | 2009-09-10 | Panasonic Electric Works Co Ltd | 分解装置と分解処理方法 |
WO2015137366A1 (ja) * | 2014-03-11 | 2015-09-17 | 日東電工株式会社 | ポリエステル系樹脂の加水分解物の製造装置 |
WO2015137365A1 (ja) * | 2014-03-11 | 2015-09-17 | 日東電工株式会社 | ポリエステル系樹脂の加水分解物の製造方法 |
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JPWO2004041917A1 (ja) | 2006-03-09 |
US20060247465A1 (en) | 2006-11-02 |
AU2003277574A1 (en) | 2004-06-07 |
EP1580222A1 (en) | 2005-09-28 |
EP1580222A4 (en) | 2007-05-02 |
JP4297112B2 (ja) | 2009-07-15 |
EP1580222B1 (en) | 2014-01-22 |
US7696378B2 (en) | 2010-04-13 |
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