EP0000948B1 - Procédé de préparation d'une composition liquide contenant un polyol à partir de déchets de polyuréthane - Google Patents

Procédé de préparation d'une composition liquide contenant un polyol à partir de déchets de polyuréthane Download PDF

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Publication number
EP0000948B1
EP0000948B1 EP19780100751 EP78100751A EP0000948B1 EP 0000948 B1 EP0000948 B1 EP 0000948B1 EP 19780100751 EP19780100751 EP 19780100751 EP 78100751 A EP78100751 A EP 78100751A EP 0000948 B1 EP0000948 B1 EP 0000948B1
Authority
EP
European Patent Office
Prior art keywords
reaction
polyurethane
koh
approximately
catalyst
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.)
Expired
Application number
EP19780100751
Other languages
German (de)
English (en)
Other versions
EP0000948A1 (fr
Inventor
Gunter Dr. Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apprich Johannes
Koble Ludwig
Original Assignee
Apprich Johannes
Koble Ludwig
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Apprich Johannes, Koble Ludwig filed Critical Apprich Johannes
Publication of EP0000948A1 publication Critical patent/EP0000948A1/fr
Application granted granted Critical
Publication of EP0000948B1 publication Critical patent/EP0000948B1/fr
Expired legal-status Critical Current

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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
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/83—Chemically modified polymers
    • C08G18/831—Chemically modified polymers by oxygen-containing compounds inclusive of carbonic acid halogenides, carboxylic acid halogenides and epoxy halides
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Polyurethanes Or Polyureas (AREA)

Claims (6)

1. Procédé de préparation de liquides contenant des polyols à partir de déchets de polyuréthane par chauffage de déchets de polyuréthanes éventuellement broyés avec au moins un glycol, en présence d'au moins un métal du premier ou du deuxième groupe principal de la classification périodique des éléments et/ou d'au moins un composé fortement basique d'un métal du premier ou du second groupe principal de la classification périodique des éléments comme catalyseur, à des températures d'environ 150 à environ 220°C, caractérisé en ce qu'on utilise comme glycol du di- propylène glycol et/ou du tripropylène glycol.
2. Procédé suivant la revendication 1, caractérisé en ce qu'on utilise comme composé fortement basique d'un métal du premier ou du deuxième groupe principal de la classification périodique des éléments un oxyde, hydroxyde, alcoolate, phosphate et/ou acétate.
3. Procédé suivant l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'on utilise comme catalyseur du lithium, du sodium, du potassium, du magnésium et/ou du calcium et/ou au moins composé fortement basique de ces métaux.
4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce qu'on utilise comme catalyseur de l'hydroxyde de sodium et/ou de l'acétate de sodium.
5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on utilise environ 0,1 à environ 10%, de préférence environ 0,5 à environ 5% de catalyseur, par rapport au poids des déchets de polyuréthane.
6. Procédé suivant la revendication 1, caractérisé en ce qu'on utilise le diol aliphatique et les déchets de polyuréthane dans un rapport pondéral d'environ 3 : 5 à environ 5 : 1, de préférence d'environ 4 : 5 à environ 2 : 1.
EP19780100751 1977-08-26 1978-08-25 Procédé de préparation d'une composition liquide contenant un polyol à partir de déchets de polyuréthane Expired EP0000948B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2738572 1977-08-26
DE2738572A DE2738572C3 (de) 1977-08-26 1977-08-26 Verfahren zum Herstellen polyolhaltiger Flüssigkeiten aus Polyurethanabfällen

Publications (2)

Publication Number Publication Date
EP0000948A1 EP0000948A1 (fr) 1979-03-07
EP0000948B1 true EP0000948B1 (fr) 1981-10-14

Family

ID=6017407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780100751 Expired EP0000948B1 (fr) 1977-08-26 1978-08-25 Procédé de préparation d'une composition liquide contenant un polyol à partir de déchets de polyuréthane

Country Status (2)

Country Link
EP (1) EP0000948B1 (fr)
DE (1) DE2738572C3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759054C2 (de) * 1977-12-30 1983-10-06 Apprich, Johannes, 7080 Aalen Verfahren zur Herstellung polyolhaltiger Flüssigkeiten aus Polyurethanabfällen und ihre Verwendung
US4316992A (en) 1981-02-23 1982-02-23 Ford Motor Company Process for polyol recovery from polyurethane foam comprising alcohol and steam hydrolysis
US4317939A (en) 1981-02-23 1982-03-02 Ford Motor Company Catalyzed dissolution-hydrolysis of polyurethane wastes
US4336406A (en) 1981-02-24 1982-06-22 Ford Motor Company Polyol extraction by high boiling alkanes
DE3232461A1 (de) * 1982-09-01 1984-03-01 Bayer Ag, 5090 Leverkusen Verfahren zum kontinuierlichen glykolytischen hochtemperatur-abbau von polyurethankunstoffabfaellen in schneckenmaschinen
DE4024601C2 (de) * 1990-08-02 1997-04-03 Gunter Prof Dr Bauer Verfahren zur Herstellung polyolhaltiger Dispersionen und deren Verwendung
DE4030639C1 (en) * 1990-09-27 1992-02-20 Michael 8023 Grosshesselohe De Demuth Polyurethane resin recycling process - comprises shredding resin, swelling obtd. particles to a flowable gel, adding poly:ol, isocyanate etc.
US5648431A (en) * 1990-09-27 1997-07-15 Michael Demuth Process for the utilization of plastics
DE4323558C2 (de) * 1993-07-14 2001-02-15 Gore & Ass Verfahren zur Isolierung und Wiederverwertung von Textilmaterialien aus polyurethanverklebten Textilverbundlaminaten
NL9401907A (nl) * 1994-11-15 1996-06-03 Hevea B V Werkwijze voor het verwerken en bereiden van microcellulair, elastomeer polyurethaan, alsmede produkt, vervaardigd met toepassing van microcellulair, elastomeer polyurethaan.
DE4442379A1 (de) 1994-11-29 1996-05-30 Bayer Ag Verfahren zum glykolytischen Abbau von Polyurethankunststoffen
AU704932B2 (en) * 1996-10-08 1999-05-06 Jong Han Jeon A method for preparation of recycled polyols and a method for manufacturing polyurethane foams with improved thermal insulation property

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110405B (de) * 1960-03-05 1961-07-06 Continental Gummi Werke Ag Verfahren zur Aufarbeitung von Polyurethanschaumstoffabfaellen
US3738946A (en) * 1971-08-05 1973-06-12 Upjohn Co Conversion of scrap polyurethane foam to polyol
JPS5171381A (en) * 1974-12-19 1976-06-21 Bridgestone Tire Co Ltd Horiuretanfuoomuno bunkaikaishuho
DE2542022C2 (de) * 1975-09-20 1982-10-14 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von aktivierten, zur Herstellung von Polyurethankunststoffen wiederverwendbaren Polyhydroxylverbindungen

Also Published As

Publication number Publication date
DE2738572A1 (de) 1979-03-01
DE2738572B2 (de) 1979-03-22
DE2738572C3 (de) 1979-11-29
EP0000948A1 (fr) 1979-03-07

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