FR2398087A1 - POLYURETHANE FOAM HYDROLYSIS PROCESS - Google Patents

POLYURETHANE FOAM HYDROLYSIS PROCESS

Info

Publication number
FR2398087A1
FR2398087A1 FR7820793A FR7820793A FR2398087A1 FR 2398087 A1 FR2398087 A1 FR 2398087A1 FR 7820793 A FR7820793 A FR 7820793A FR 7820793 A FR7820793 A FR 7820793A FR 2398087 A1 FR2398087 A1 FR 2398087A1
Authority
FR
France
Prior art keywords
polyurethane foam
hydrolysis process
reaction zone
foam hydrolysis
hydrolyzate
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
Application number
FR7820793A
Other languages
French (fr)
Other versions
FR2398087B1 (en
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.)
Ford France SA
Original Assignee
Ford France SA
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 Ford France SA filed Critical Ford France SA
Publication of FR2398087A1 publication Critical patent/FR2398087A1/en
Application granted granted Critical
Publication of FR2398087B1 publication Critical patent/FR2398087B1/fr
Granted legal-status Critical Current

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
    • C08J11/16—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 inorganic material
    • 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)
  • 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)
  • Polyurethanes Or Polyureas (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Procédé pour l'hydrolyse de mousse de polyuréthanne et pour la séparation de diamines et de polyéthers (ou de polyesters) de l'hydrolysat effectué pratiquement à la pression atmosphérique et à des températures supérieures à environ 185 degrés C dans une zone réactionnelle contentant de la vapeur d'eau, consistant à augmenter la vitesse de production de la diamine en ajoutant une quantité faible mais efficace d'ammoniac dans la zone réactionnelle.A process for the hydrolysis of polyurethane foam and for the separation of diamines and polyethers (or polyesters) from the hydrolyzate carried out substantially at atmospheric pressure and at temperatures above about 185 degrees C in a reaction zone containing water vapor, consisting in increasing the rate of production of the diamine by adding a small but effective amount of ammonia to the reaction zone.

FR7820793A 1977-07-18 1978-07-12 POLYURETHANE FOAM HYDROLYSIS PROCESS Granted FR2398087A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81663677A 1977-07-18 1977-07-18

Publications (2)

Publication Number Publication Date
FR2398087A1 true FR2398087A1 (en) 1979-02-16
FR2398087B1 FR2398087B1 (en) 1981-11-20

Family

ID=25221213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820793A Granted FR2398087A1 (en) 1977-07-18 1978-07-12 POLYURETHANE FOAM HYDROLYSIS PROCESS

Country Status (6)

Country Link
JP (1) JPS5434396A (en)
BE (1) BE869046A (en)
DE (1) DE2831483B2 (en)
ES (1) ES471479A1 (en)
FR (1) FR2398087A1 (en)
GB (1) GB1602676A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011662B1 (en) * 1978-11-29 1983-09-14 Ford Motor Company Limited Hydrolysis of polyurethanes
DE102005027814A1 (en) * 2005-06-15 2006-12-21 Basf Ag Process for the preparation of isocyanate adducts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967601C (en) * 1955-03-29 1957-11-28 Continental Gummi Werke Ag Process for the recovery of higher molecular weight cleavage products which can be crosslinked to form plastics from waste crosslinked nitrogenous polycondensation products
FR1429011A (en) * 1964-03-30 1966-02-18 Bridgestone Tire Co Ltd Process for obtaining polyol and amine by decomposition of polyurethane
FR2210493A1 (en) * 1972-12-18 1974-07-12 Ford France
FR2356689A1 (en) * 1976-07-01 1978-01-27 Mc Donnell Douglas Corp POLYURETHANE RECOVERY METHOD AND COMPOSITION

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967601C (en) * 1955-03-29 1957-11-28 Continental Gummi Werke Ag Process for the recovery of higher molecular weight cleavage products which can be crosslinked to form plastics from waste crosslinked nitrogenous polycondensation products
FR1429011A (en) * 1964-03-30 1966-02-18 Bridgestone Tire Co Ltd Process for obtaining polyol and amine by decomposition of polyurethane
FR2210493A1 (en) * 1972-12-18 1974-07-12 Ford France
FR2356689A1 (en) * 1976-07-01 1978-01-27 Mc Donnell Douglas Corp POLYURETHANE RECOVERY METHOD AND COMPOSITION

Also Published As

Publication number Publication date
JPS5434396A (en) 1979-03-13
ES471479A1 (en) 1979-01-16
BE869046A (en) 1978-11-16
FR2398087B1 (en) 1981-11-20
DE2831483B2 (en) 1980-07-24
GB1602676A (en) 1981-11-11
DE2831483A1 (en) 1979-01-25

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Legal Events

Date Code Title Description
ST Notification of lapse