CA2133214A1 - Process for the removal of foreign materials from a post-consumer polyethylene terephthalate feed stream - Google Patents
Process for the removal of foreign materials from a post-consumer polyethylene terephthalate feed streamInfo
- Publication number
- CA2133214A1 CA2133214A1 CA002133214A CA2133214A CA2133214A1 CA 2133214 A1 CA2133214 A1 CA 2133214A1 CA 002133214 A CA002133214 A CA 002133214A CA 2133214 A CA2133214 A CA 2133214A CA 2133214 A1 CA2133214 A1 CA 2133214A1
- Authority
- CA
- Canada
- Prior art keywords
- melt
- polyethylene terephthalate
- feed stream
- foreign materials
- post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C08G63/88—Post-polymerisation treatment
- C08G63/90—Purification; Drying
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00168—Controlling or regulating processes controlling the viscosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00171—Controlling or regulating processes controlling the density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00761—Details of the reactor
- B01J2219/00763—Baffles
- B01J2219/00765—Baffles attached to the reactor wall
- B01J2219/0077—Baffles attached to the reactor wall inclined
- B01J2219/00772—Baffles attached to the reactor wall inclined in a helix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
- B29B2017/0244—Mechanical separating techniques; devices therefor using density difference in liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0255—Specific separating techniques using different melting or softening temperatures of the materials to be separated
- B29B2017/0258—Specific separating techniques using different melting or softening temperatures of the materials to be separated using heated surfaces for selective softening or melting of at least one plastic ingredient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
-
- 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
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
Abstract
This invention relates to a process for removing foreign materials from a post-consumer polyethylene terephthalate feed stream which comprises: (1) depolymerizing the polyethylene terephthalate feed stream into a melt having a melt viscosity which is within the range of 0.001 poise to 1000 poise (2) feeding the melt into a separation device, (3) allowing low density foreign ma-terials to float to the surface of the melt, (4) allowing high density foreign materials to sink to the bottom of the melt, and (5) rem-oving molten polyethylene terephthalate oligomer from an area which is located intermediately between the surface of the melt and the bottom of the melt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US860,963 | 1992-03-31 | ||
US07/860,963 US5223544A (en) | 1992-03-31 | 1992-03-31 | Process for the removal of foreign materials from a post-consumer plyethylene terephthalate feed stream |
PCT/EP1993/000737 WO1993020125A2 (en) | 1992-03-31 | 1993-03-24 | Process for the removal of foreign materials from a post-consumer polyethylene terephthalate feed stream |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2133214A1 true CA2133214A1 (en) | 1993-10-14 |
CA2133214C CA2133214C (en) | 2003-10-14 |
Family
ID=25334501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2133214 Expired - Fee Related CA2133214C (en) | 1992-03-31 | 1993-03-24 | Process for the removal of foreign materials from a post-consumer polyethylene terephthalate feed stream |
Country Status (11)
Country | Link |
---|---|
US (1) | US5223544A (en) |
EP (1) | EP0637326B1 (en) |
JP (1) | JP3459919B2 (en) |
KR (1) | KR100245206B1 (en) |
AU (1) | AU671109B2 (en) |
BR (1) | BR9306156A (en) |
CA (1) | CA2133214C (en) |
DE (1) | DE69329279T2 (en) |
ES (1) | ES2149810T3 (en) |
TW (1) | TW237463B (en) |
WO (1) | WO1993020125A2 (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5602187A (en) * | 1992-05-18 | 1997-02-11 | Swig Pty Ltd. | Polyethylene terephthalate decontamination |
US5504121A (en) * | 1992-05-18 | 1996-04-02 | Swig Pty Ltd. | Polyethylene terephthalate decontamination |
BR9406885A (en) * | 1993-07-05 | 1996-04-02 | Ici Plc | Process for depolymerizing solid phase polyesters and for producing a dicarboxylic acid |
DE4410672C2 (en) * | 1994-03-26 | 1996-04-04 | Christian O Schoen | Process for recycling plastic |
DE4428355A1 (en) * | 1994-05-20 | 1996-02-15 | Veba Oel Ag | Device for the depolymerization of old and waste plastics |
DE4417721A1 (en) * | 1994-05-20 | 1995-11-23 | Veba Oel Ag | Depolymerisation plant for scrap and waste plastics |
US5468780A (en) * | 1994-06-21 | 1995-11-21 | Miyaso Chemical Co. | Method of recycling unsaturated polyester resin waste |
US5559159A (en) * | 1995-12-07 | 1996-09-24 | Eastman Chemical Company | Process including depolymerization in polyester reactor for recycling polyester materials |
US6284808B1 (en) * | 1997-02-03 | 2001-09-04 | Illinois Tool Works Inc. | Inline solid state polymerization of PET flakes for manufacturing plastic strap by removing non-crystalline materials from recycled PET |
US5945460A (en) * | 1997-03-20 | 1999-08-31 | Eastman Chemical Company | Process for continuously producing polyester articles with scrap recycle in a continuous melt-to-preform process |
JP3715812B2 (en) * | 1998-12-10 | 2005-11-16 | 株式会社アイエス | Chemical recycling method for polyethylene terephthalate waste |
US6410607B1 (en) * | 1999-02-10 | 2002-06-25 | Eastman Chemical Company | Glycolysis process for recycling of post-consumer pet |
ATE489213T1 (en) * | 2002-09-27 | 2010-12-15 | Shigenobu Hamano | DEVICE FOR SEPARATING AND RECOVERING REDUCED VOLUME POLYSTYRENE RESIN GEL |
US7666368B2 (en) * | 2002-09-27 | 2010-02-23 | Meishin Kogyo Kabushikigaisha | Apparatus for treating volume-reduced polystyrene resin in gel state for material separation and recovery |
US7297721B2 (en) * | 2003-06-20 | 2007-11-20 | Futura Polyesters Limited | Process for controlled polymerization of a mixed polymer |
ITTP20030002A1 (en) * | 2003-10-09 | 2005-04-10 | Giovanni Maurizio Di | OXIDORIDUTION PROCESS TO RECYCLE ANY REJECTION FRACTION: SLUDGE, INDUSTRIAL WASTE, AGRI-FOOD, SLAUGHTER, FISH, ETC. IN STERILE BIOSTABILIZED AND / OR THERMOACOUSTIC EXPANDED POLYXAN INSULATION, IN AN INNOVATIVE MOBILE OR FIXED SYSTEM WITH |
JP2005132901A (en) * | 2003-10-29 | 2005-05-26 | Teijin Fibers Ltd | Method for removing foreign material from aliphatic polyester |
JP2005131856A (en) * | 2003-10-29 | 2005-05-26 | Teijin Fibers Ltd | Method for removing different material from aliphatic polyester |
WO2010137756A1 (en) * | 2009-05-28 | 2010-12-02 | Byung Kyoo Park | Method and apparatus for recycling thermoplastic resin from a resin mixture |
WO2012115984A2 (en) | 2011-02-21 | 2012-08-30 | Felice Kristopher M | Polyurethane dispersions and methods of making and using same |
US20120279023A1 (en) * | 2011-05-06 | 2012-11-08 | Avery Dennison Corporation | Plastic Fastening Device Comprising a Recycled Thermoplastic Resin |
EP2718383A4 (en) | 2011-06-10 | 2015-05-20 | Kristopher M Felice | Clear coatings, acrylic coatings |
KR102116052B1 (en) * | 2012-08-29 | 2020-05-27 | 도요보 가부시키가이샤 | Heat-shrinkable polyester film |
US9732026B2 (en) | 2012-12-14 | 2017-08-15 | Resinate Technologies, Inc. | Reaction products containing hydroxyalkylterephthalates and methods of making and using same |
KR102090218B1 (en) * | 2018-05-23 | 2020-03-17 | 주식회사 포스코 | Runner |
KR20220079916A (en) | 2019-10-08 | 2022-06-14 | 이스트만 케미칼 컴파니 | Catalyst System for Crystallizable Reactor Grade Resins with Recycled Content |
CA3154880A1 (en) | 2019-10-25 | 2021-04-29 | Mark Allen Peters | Copolyesters produced from recycled copolyesters |
NL2024181B1 (en) * | 2019-11-07 | 2021-07-20 | Ioniqa Tech B V | Reactor system and method of separating a first contaminant from a feed stream |
US20220120516A1 (en) * | 2020-10-20 | 2022-04-21 | Katz Water Tech, Llc | Coiled spring |
CN113351140B (en) * | 2021-06-23 | 2022-10-18 | 山东佳星环保科技有限公司 | High-dispersion complete mixed flow reaction kettle |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL250015A (en) * | 1959-04-18 | 1900-01-01 | ||
US3652466A (en) * | 1968-07-16 | 1972-03-28 | Du Pont | Process of recovering polyester from polyester films having polymeric coatings |
US3884850A (en) * | 1970-02-13 | 1975-05-20 | Fiber Industries Inc | Continuous atmospheric depolymerization of polyester |
US3701741A (en) * | 1971-02-01 | 1972-10-31 | Eastman Kodak Co | Purification of impure scrap poly(ethylene terephthalate) |
DE2703461C2 (en) * | 1977-01-28 | 1985-01-10 | Davy McKee AG, 6000 Frankfurt | Stop unit for the pre-compression of shredded, voluminous polymer waste |
DE2926233A1 (en) * | 1979-06-29 | 1981-01-08 | Hoechst Ag | Polyethylene terephthalate recovery from waste - using hydrocyclones and pref. aq. ethylene glycol as separating liq., extruding and polycondensing |
US4542239A (en) * | 1981-11-18 | 1985-09-17 | Board Of Control Of Michigan Technological University | Process for recovering terephthalic acid from waste polyethylene terephthalate |
US4605762A (en) * | 1982-04-23 | 1986-08-12 | Celanese Mexicana S.A. | Depolymerization of condensation polymers |
US4439550A (en) * | 1982-11-22 | 1984-03-27 | Texaco Inc. | Aromatic polyols made from recycled polyethylene terephthalate waste streams, alkylene glycol and dibasic acid waste streams |
JPS60248646A (en) * | 1984-05-25 | 1985-12-09 | Toray Ind Inc | Depolymerization of waste polyester |
US4746422A (en) * | 1985-07-26 | 1988-05-24 | Rutgers University | Method for the separation of a mixture of plastic and contaminant |
DE3843068A1 (en) * | 1988-12-21 | 1990-06-28 | Esselte Meto Int Gmbh | DEVICE FOR FEEDING A LABEL TAPE |
CH678184A5 (en) * | 1989-03-09 | 1991-08-15 | Tisslan S A | |
JPH06502446A (en) * | 1990-10-22 | 1994-03-17 | テネコ・パッケージング・インコーポレーテッド | Polystyrene decontamination |
US5120768A (en) * | 1991-05-09 | 1992-06-09 | The Goodyear Tire & Rubber Company | Process for separating polyethylene terephthalate from polyvinyl chloride |
-
1992
- 1992-03-31 US US07/860,963 patent/US5223544A/en not_active Expired - Lifetime
-
1993
- 1993-03-24 CA CA 2133214 patent/CA2133214C/en not_active Expired - Fee Related
- 1993-03-24 BR BR9306156A patent/BR9306156A/en not_active IP Right Cessation
- 1993-03-24 ES ES93906619T patent/ES2149810T3/en not_active Expired - Lifetime
- 1993-03-24 JP JP51706193A patent/JP3459919B2/en not_active Expired - Fee Related
- 1993-03-24 AU AU37524/93A patent/AU671109B2/en not_active Ceased
- 1993-03-24 WO PCT/EP1993/000737 patent/WO1993020125A2/en active IP Right Grant
- 1993-03-24 DE DE1993629279 patent/DE69329279T2/en not_active Expired - Fee Related
- 1993-03-24 KR KR1019940703399A patent/KR100245206B1/en not_active IP Right Cessation
- 1993-03-24 EP EP93906619A patent/EP0637326B1/en not_active Expired - Lifetime
- 1993-04-14 TW TW82102834A patent/TW237463B/zh active
Also Published As
Publication number | Publication date |
---|---|
BR9306156A (en) | 1998-06-23 |
AU3752493A (en) | 1993-11-08 |
EP0637326B1 (en) | 2000-08-23 |
US5223544A (en) | 1993-06-29 |
TW237463B (en) | 1995-01-01 |
DE69329279T2 (en) | 2001-04-26 |
KR100245206B1 (en) | 2000-02-15 |
WO1993020125A2 (en) | 1993-10-14 |
WO1993020125A3 (en) | 1994-04-14 |
JPH07505424A (en) | 1995-06-15 |
KR950700954A (en) | 1995-02-20 |
DE69329279D1 (en) | 2000-09-28 |
AU671109B2 (en) | 1996-08-15 |
ES2149810T3 (en) | 2000-11-16 |
EP0637326A1 (en) | 1995-02-08 |
CA2133214C (en) | 2003-10-14 |
JP3459919B2 (en) | 2003-10-27 |
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