NL1006575C2 - Depolymeriseren van polyamiden. - Google Patents
Depolymeriseren van polyamiden. Download PDFInfo
- Publication number
- NL1006575C2 NL1006575C2 NL1006575A NL1006575A NL1006575C2 NL 1006575 C2 NL1006575 C2 NL 1006575C2 NL 1006575 A NL1006575 A NL 1006575A NL 1006575 A NL1006575 A NL 1006575A NL 1006575 C2 NL1006575 C2 NL 1006575C2
- Authority
- NL
- Netherlands
- Prior art keywords
- alcohol
- depolymerization
- process according
- polyamide
- polyamides
- Prior art date
Links
- 229920002647 polyamide Polymers 0.000 title claims abstract description 33
- 239000004952 Polyamide Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- -1 alkali metal salt Chemical class 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 150000001298 alcohols Chemical class 0.000 description 6
- 229920002292 Nylon 6 Polymers 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000001361 adipic acid Substances 0.000 description 4
- 235000011037 adipic acid Nutrition 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 238000012958 reprocessing Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000003518 caustics Substances 0.000 description 3
- 238000012691 depolymerization reaction Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000137 polyphosphoric acid Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- KYKFCSHPTAVNJD-UHFFFAOYSA-L sodium adipate Chemical group [Na+].[Na+].[O-]C(=O)CCCCC([O-])=O KYKFCSHPTAVNJD-UHFFFAOYSA-L 0.000 description 1
- 239000001601 sodium adipate Substances 0.000 description 1
- 235000011049 sodium adipate Nutrition 0.000 description 1
- 229940023144 sodium glycolate Drugs 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- JEJAMASKDTUEBZ-UHFFFAOYSA-N tris(1,1,3-tribromo-2,2-dimethylpropyl) phosphate Chemical compound BrCC(C)(C)C(Br)(Br)OP(=O)(OC(Br)(Br)C(C)(C)CBr)OC(Br)(Br)C(C)(C)CBr JEJAMASKDTUEBZ-UHFFFAOYSA-N 0.000 description 1
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
- C08J11/18—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 organic material
- C08J11/22—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 organic material by treatment with organic oxygen-containing compounds
- C08J11/24—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 organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/44—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers
- C07C209/50—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/12—Preparation of lactams by depolymerising polyamides
-
- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; 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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Polyamides (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Artificial Filaments (AREA)
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1006575A NL1006575C2 (nl) | 1997-07-14 | 1997-07-14 | Depolymeriseren van polyamiden. |
| EP19980202204 EP0891969B1 (en) | 1997-07-14 | 1998-07-01 | Depolymerisation of polyamides |
| DE69805575T DE69805575T2 (de) | 1997-07-14 | 1998-07-01 | Depolymerisation von Polyamiden |
| AT98202204T ATE218123T1 (de) | 1997-07-14 | 1998-07-01 | Depolymerisation von polyamiden |
| KR1019980028503A KR19990013862A (ko) | 1997-07-14 | 1998-07-10 | 폴리아미드의 해중합화 방법 |
| BR9802430A BR9802430A (pt) | 1997-07-14 | 1998-07-10 | Despolimerização de poliamidas. |
| CA 2243126 CA2243126A1 (en) | 1997-07-14 | 1998-07-10 | Depolymerization of polyamides |
| ID980981A ID20585A (id) | 1997-07-14 | 1998-07-10 | Depolimerisasi poliamida |
| JP22922798A JPH11152266A (ja) | 1997-07-14 | 1998-07-10 | ポリアミドの解重合 |
| EA199800561A EA001381B1 (ru) | 1997-07-14 | 1998-07-13 | Способ деполимеризации полиамидов |
| CN98103334A CN1210855A (zh) | 1997-07-14 | 1998-07-13 | 聚酰胺解聚 |
| CZ982203A CZ220398A3 (cs) | 1997-07-14 | 1998-07-13 | Způsob depolymerizace polyamidů |
| TR1998/01353A TR199801353A2 (xx) | 1997-07-14 | 1998-07-13 | Poliamidlerin Depolimerizasyonu. |
| US09/115,234 US6020486A (en) | 1997-07-14 | 1998-07-14 | Depolymerization of polyamides |
| PL32747898A PL327478A1 (en) | 1997-07-14 | 1998-07-14 | Method of depolymerising polyamides |
| TW87111543A TW459005B (en) | 1997-07-14 | 1998-07-15 | Depolymerisation of polyamides |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1006575A NL1006575C2 (nl) | 1997-07-14 | 1997-07-14 | Depolymeriseren van polyamiden. |
| NL1006575 | 1997-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL1006575C2 true NL1006575C2 (nl) | 1999-01-15 |
Family
ID=19765347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1006575A NL1006575C2 (nl) | 1997-07-14 | 1997-07-14 | Depolymeriseren van polyamiden. |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US6020486A (pt) |
| EP (1) | EP0891969B1 (pt) |
| JP (1) | JPH11152266A (pt) |
| KR (1) | KR19990013862A (pt) |
| CN (1) | CN1210855A (pt) |
| AT (1) | ATE218123T1 (pt) |
| BR (1) | BR9802430A (pt) |
| CA (1) | CA2243126A1 (pt) |
| CZ (1) | CZ220398A3 (pt) |
| DE (1) | DE69805575T2 (pt) |
| EA (1) | EA001381B1 (pt) |
| ID (1) | ID20585A (pt) |
| NL (1) | NL1006575C2 (pt) |
| PL (1) | PL327478A1 (pt) |
| TR (1) | TR199801353A2 (pt) |
| TW (1) | TW459005B (pt) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182913B1 (en) | 1999-01-25 | 2001-02-06 | Interface, Inc. | Method and apparatus for reclaiming carpet components |
| WO2001094457A2 (en) * | 2000-06-08 | 2001-12-13 | Dupont Canada Inc. | Solvent-based recovery and recycle of polyamide material |
| DE10029422A1 (de) * | 2000-06-15 | 2001-12-20 | Andreas Hornung | Einstufiges Verfahren zur Rückgewinnung von hochreinem epsilon-Caprolactam aus Teppichböden oder Mischfasern |
| JP3994660B2 (ja) * | 2000-12-22 | 2007-10-24 | 日立化成工業株式会社 | 不飽和ポリエステル樹脂硬化物用分解処理液、該処理液を用いた不飽和ポリエステル樹脂硬化物の処理方法及び複合材料の分離方法 |
| KR101160352B1 (ko) * | 2004-03-26 | 2012-06-26 | 김도균 | 폴리에스테르와 폴리아미드 혼성 폐기물을 재활용한 고기능성 수지 및 그 제조방법 |
| JP5016234B2 (ja) * | 2005-11-25 | 2012-09-05 | 国立大学法人山口大学 | ポリアミドの解重合方法及びポリアミドのモノマーの製造方法 |
| CN101379019B (zh) * | 2006-01-31 | 2012-05-09 | 宇部兴产株式会社 | 6-羟基己酸酯的制造方法和三烷基胺的制造方法 |
| US20110040027A1 (en) * | 2009-04-22 | 2011-02-17 | Keating Joseph Z | Methods of recycling carpet components and products formed therefrom |
| US20100273001A1 (en) * | 2009-04-22 | 2010-10-28 | Keating Joseph Z | Method of Recycling Carpet Components and Carpet Components formed Therefrom |
| US8113448B2 (en) * | 2009-04-22 | 2012-02-14 | Keating Joseph Z | Methods of recycling carpet components and carpet components formed thereform |
| CN104017205B (zh) * | 2014-06-11 | 2017-01-18 | 李兆顺 | 一种再生尼龙的方法 |
| NL2015749B1 (en) * | 2015-11-09 | 2017-05-26 | Ioniqa Tech B V | PA/PET separation process. |
| PL239015B1 (pl) * | 2017-10-06 | 2021-10-25 | Politechnika Gdanska | Sposób dekompozycji termochemicznej poliamidów |
| CN109553561B (zh) * | 2018-11-28 | 2020-07-28 | 四川塑金科技有限公司 | 再生衣服面料的制备方法及面料 |
| CN218202636U (zh) * | 2020-08-17 | 2023-01-03 | 深圳清研紫光检测技术有限公司 | 微电网系统、热能空间的温控和制冷系统以及耦合系统 |
| EP4214266A1 (de) * | 2020-09-16 | 2023-07-26 | Evonik Operations GmbH | Verfahren zur sauren hydrolyse von reinem polylaurinlactam |
| DE102021203743A1 (de) | 2021-04-15 | 2022-10-20 | Evonik Functional Solutions Gmbh | Verfahren zur Solvolyse von Polyamiden mit Alkalimetallalkoholaten |
| CN113512193B (zh) * | 2021-04-30 | 2022-05-06 | 东华大学 | 一种废弃聚酰胺6醇解再生的方法 |
| CN113214475B (zh) * | 2021-04-30 | 2022-08-23 | 东华大学 | 一种再生低熔点聚酰胺6弹性体的制备方法 |
| WO2023074437A1 (ja) * | 2021-10-29 | 2023-05-04 | 東レ株式会社 | ε－カプロラクタムおよびポリアミド６オリゴマーの回収方法、ならびにポリアミド６の製造方法 |
| CN114163622B (zh) * | 2021-12-15 | 2023-03-21 | 浙江新和成特种材料有限公司 | 一种半芳香族聚酰胺废料回收制备可生物降解材料的方法及其产品 |
| WO2023120427A1 (ja) * | 2021-12-23 | 2023-06-29 | 旭化成株式会社 | 解重合方法 |
| CN119421919A (zh) | 2022-06-26 | 2025-02-11 | 索尔维特殊聚合物美国有限责任公司 | 用于在酸性条件下再循环聚酰胺的方法 |
| TW202442633A (zh) * | 2023-02-27 | 2024-11-01 | 日商三菱瓦斯化學股份有限公司 | 環狀內醯胺之製造方法、及環狀內醯胺之製造裝置 |
| WO2025182802A1 (ja) * | 2024-02-26 | 2025-09-04 | 三菱瓦斯化学株式会社 | 環状ラクタムの製造方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840606A (en) * | 1955-04-15 | 1958-06-24 | Du Pont | Nylon hydrolysis |
| GB1017985A (en) * | 1963-02-18 | 1966-01-26 | Allied Chem | Process for the recovery of ª-caprolactam from polycaprolactams |
| DE1235924B (de) * | 1962-07-25 | 1967-03-09 | Basf Ag | Verfahren zur Rueckgewinnung von Lactamen aus Polyamiden |
| WO1994008942A1 (en) * | 1992-10-19 | 1994-04-28 | E.I. Du Pont De Nemours And Company | Depolymerization of nylon 6,6 (and optionally) nylon 6 to obtain hexamethylene diamine (and caprolactam) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113938A (en) * | 1976-03-23 | 1977-09-24 | Teijin Ltd | Recovery of dimethyl terephthalate |
| US5536831A (en) * | 1994-12-12 | 1996-07-16 | Basf Aktiengesellschaft | Obtaining caprolactam by cleavage of molten polycaprolactam |
-
1997
- 1997-07-14 NL NL1006575A patent/NL1006575C2/nl not_active IP Right Cessation
-
1998
- 1998-07-01 DE DE69805575T patent/DE69805575T2/de not_active Expired - Lifetime
- 1998-07-01 AT AT98202204T patent/ATE218123T1/de not_active IP Right Cessation
- 1998-07-01 EP EP19980202204 patent/EP0891969B1/en not_active Expired - Lifetime
- 1998-07-10 KR KR1019980028503A patent/KR19990013862A/ko not_active Withdrawn
- 1998-07-10 ID ID980981A patent/ID20585A/id unknown
- 1998-07-10 JP JP22922798A patent/JPH11152266A/ja active Pending
- 1998-07-10 BR BR9802430A patent/BR9802430A/pt not_active IP Right Cessation
- 1998-07-10 CA CA 2243126 patent/CA2243126A1/en not_active Abandoned
- 1998-07-13 CN CN98103334A patent/CN1210855A/zh active Pending
- 1998-07-13 EA EA199800561A patent/EA001381B1/ru not_active IP Right Cessation
- 1998-07-13 CZ CZ982203A patent/CZ220398A3/cs unknown
- 1998-07-13 TR TR1998/01353A patent/TR199801353A2/xx unknown
- 1998-07-14 PL PL32747898A patent/PL327478A1/xx unknown
- 1998-07-14 US US09/115,234 patent/US6020486A/en not_active Expired - Lifetime
- 1998-07-15 TW TW87111543A patent/TW459005B/zh active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840606A (en) * | 1955-04-15 | 1958-06-24 | Du Pont | Nylon hydrolysis |
| DE1235924B (de) * | 1962-07-25 | 1967-03-09 | Basf Ag | Verfahren zur Rueckgewinnung von Lactamen aus Polyamiden |
| GB1017985A (en) * | 1963-02-18 | 1966-01-26 | Allied Chem | Process for the recovery of ª-caprolactam from polycaprolactams |
| WO1994008942A1 (en) * | 1992-10-19 | 1994-04-28 | E.I. Du Pont De Nemours And Company | Depolymerization of nylon 6,6 (and optionally) nylon 6 to obtain hexamethylene diamine (and caprolactam) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1210855A (zh) | 1999-03-17 |
| PL327478A1 (en) | 1999-01-18 |
| KR19990013862A (ko) | 1999-02-25 |
| US6020486A (en) | 2000-02-01 |
| EP0891969A1 (en) | 1999-01-20 |
| CZ220398A3 (cs) | 1999-02-17 |
| EA199800561A1 (ru) | 1999-02-25 |
| TW459005B (en) | 2001-10-11 |
| DE69805575T2 (de) | 2003-01-30 |
| JPH11152266A (ja) | 1999-06-08 |
| DE69805575D1 (de) | 2002-07-04 |
| EA001381B1 (ru) | 2001-02-26 |
| TR199801353A2 (xx) | 1999-02-22 |
| CA2243126A1 (en) | 1999-01-14 |
| EP0891969B1 (en) | 2002-05-29 |
| BR9802430A (pt) | 2000-01-18 |
| ID20585A (id) | 1999-01-21 |
| ATE218123T1 (de) | 2002-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL1006575C2 (nl) | Depolymeriseren van polyamiden. | |
| EP0850219B1 (en) | Recovery of caprolactam from nylon-6 scrap | |
| JP3236289B2 (ja) | 触媒を用いた乳酸からラクチドを直接製造する方法 | |
| WO1997003048A1 (en) | Process for the recovery of caprolactam from waste containing nylon by extraction with alkyl phenols | |
| AU672062B2 (en) | Depolymerization of nylon 6,6 (and optionally) nylon 6 to obtain hexamethylene diamine (and caprolactam) | |
| US6087494A (en) | Depolymerization of polyamides | |
| US5077381A (en) | Constant compositioin recycle of nylon 6 polymerization wash water | |
| US5218080A (en) | Constant composition recycle of nylon 6 polymerization wash water | |
| CN120091991A (zh) | 用于回收聚(对苯二甲酸亚烷基酯)的方法 | |
| CA2975324C (en) | Method for manufacturing lactide | |
| EP1679331A1 (en) | Acyloxy acetic acid polymer and method for producing same | |
| US4264501A (en) | Process for the recovery of pyrrolidone-2 | |
| MXPA98005657A (en) | Depolimerization of poliami | |
| WO2024116869A1 (ja) | ナイロン６樹脂およびその製造方法 | |
| HK1018902A (en) | Depolymerisation of polyamides | |
| JP2003238480A (ja) | エチレングリコールの回収蒸留釜残の処理方法 | |
| KR100762055B1 (ko) | ε-카프로락탐의 제조방법 | |
| HK1018064A (zh) | 聚酰胺的解聚 | |
| HU204760B (en) | Process for continuous production of glyoxylic acid | |
| JPH07330719A (ja) | ε−カプロラクタムの精製法 | |
| JPH0726013A (ja) | ラクタムの回収方法 | |
| JPH0710834A (ja) | ラクタムの回収方法 | |
| JPH0726014A (ja) | ラクタムの回収方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PD2B | A search report has been drawn up | ||
| VD1 | Lapsed due to non-payment of the annual fee |
Effective date: 20030201 |