GB805561A - Process for the production of foamed materials, using polyurethane foam waste - Google Patents

Process for the production of foamed materials, using polyurethane foam waste

Info

Publication number
GB805561A
GB805561A GB636656A GB636656A GB805561A GB 805561 A GB805561 A GB 805561A GB 636656 A GB636656 A GB 636656A GB 636656 A GB636656 A GB 636656A GB 805561 A GB805561 A GB 805561A
Authority
GB
United Kingdom
Prior art keywords
polyester
polyurethane foam
solution
activator
scraps
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
GB636656A
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.)
Koepp & Co R Chem Fab AG
Original Assignee
Koepp & Co R Chem Fab AG
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 Koepp & Co R Chem Fab AG filed Critical Koepp & Co R Chem Fab AG
Publication of GB805561A publication Critical patent/GB805561A/en
Expired 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
    • C08J11/18—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
    • 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)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

In a process for the production of polyurethane foam by reacting a polyester with a diisocyanate, water and an activator, before the reaction scraps of polyurethane foam are heated with the polyester and/or the diisocyanate to form a homogeneous solution. A suitable temperature for preparing the homogeneous solutions is 130 DEG to 350 DEG C. In examples: (1) polyurethane foam scraps are dissolved at 270 DEG C. in a polyester of adipic acid, diethylene glycol and trimethylol propane; (2) polyurethane foam scraps are dissolved at 180 DEG C. in toluylene diisocyanate; (3) a foamed product is prepared by injecting into a stirred solution prepared as in Example (1) toluylene diisocyanate and an activator comprising the sodium salt of sulphonated oleic acid, aminocaprolactam, the ester of N-dimethylethanolamine with succinic acid, and water; (4) in a process similar to (3), the polyester employed is prepared from different proportions of reactants; (5) a solution produced as in Example (2) is reacted with an adipic acid/diethylene glycol/trimethylolpropane polyester in the presence of an activator as specified in Example (3); (6) a solution of polyurethane foam scraps dissolved by heating in a polyester as specified in Example (5) is subjected to a foaming reaction with toluylene diisocyanate and an activator comprising adipic acid diethanolamine, water, sulphonated castor oil and paraffin oil; (7) a solution similar to that of Example (1) is diluted with further polyester and subjected to foaming by the method of Example (3) with toluylene diisocyanate in the presence of an activator comprising the ester amine of diethylamine and adipic acid, oleic acid diethylamine, water and tin tetraoctylate. In place of toluylene alone there can be used a solution containing polyurethane foam scraps; (8) a solution of polyurethane foam scraps in toluylene diisocyanate is subjected to a foaming reaction, by the method of Example (3), with an adipic acid/diethylene glycol/dimethylol propane polyester.
GB636656A 1955-03-17 1956-02-29 Process for the production of foamed materials, using polyurethane foam waste Expired GB805561A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK25207A DE962649C (en) 1955-03-17 1955-03-17 Process for the production of foams using polyurethane foam waste
DEK35030A DE1100273B (en) 1955-03-17 1958-06-07 Process for the production of foams using polyurethane foam waste

Publications (1)

Publication Number Publication Date
GB805561A true GB805561A (en) 1958-12-10

Family

ID=25982986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB636656A Expired GB805561A (en) 1955-03-17 1956-02-29 Process for the production of foamed materials, using polyurethane foam waste

Country Status (5)

Country Link
CH (1) CH362845A (en)
DE (2) DE962649C (en)
FR (2) FR1142230A (en)
GB (1) GB805561A (en)
NL (1) NL93675C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109824A (en) * 1960-11-14 1963-11-05 Mobay Chemical Corp Method of dissolving polyurethanes and polyureas using tall oil
US3117940A (en) * 1960-11-14 1964-01-14 Mobay Chemical Corp Method of dissolving polyurethanes
US3123577A (en) * 1964-03-03 Method of liquefying cellular
US3300417A (en) * 1963-07-02 1967-01-24 Mobay Chemical Corp Polyurethane plastics
US3406127A (en) * 1964-06-15 1968-10-15 Gulf Oil Corp Method for reclaiming scrap polymers
US4243560A (en) * 1978-04-07 1981-01-06 Centro Ricerche Fiat S.P.A. Method of recovering polyols from scrap polyurethane foam
GB2116572A (en) * 1982-03-05 1983-09-28 Kun Huang Chang High density flexible polyurethane foam
GB2266723A (en) * 1992-04-22 1993-11-10 Basf Corp Rigid polyurethane/polyisocyanurate foams containing paraffinic based oils

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962649C (en) * 1955-03-17 1957-04-25 Rudolph Koepp & Co Chem Fab A Process for the production of foams using polyurethane foam waste
DE1150802B (en) * 1959-07-31 1963-06-27 Metzeler Gummiwerke Ag Process for the production of breakdown products of isocyanate polyadducts which can be processed into polyurethane foams
DE1152253B (en) * 1961-05-08 1963-08-01 Phoenix Gummiwerke Ag Process for the production of molded bodies based on polyester urethanes using polyester urethane waste
DE1141784B (en) * 1961-06-12 1962-12-27 W Scheermesser & Co K G Dr Process for recycling polyester urethane foam waste
DE1229720B (en) * 1964-12-30 1966-12-01 Continental Gummi Werke Ag Process for the regeneration of waste crosslinked polyurethane elastomers
DE2238741A1 (en) * 1972-08-05 1974-02-07 Bayer Ag METHOD FOR LINEARIZATION OF CROSS-LINKED ISOCYANATE POLYADDITION PRODUCTS WITH POLYISOCYANATES
DE3033330A1 (en) * 1980-09-04 1982-04-29 Bayer Ag, 5090 Leverkusen METHOD FOR THE PRODUCTION OF LIQUID MIXTURES OF COMPOUNDS CONTAINING ISOCYANATE GROUPS, AND THEIR USE AS A BUILDING COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE868346C (en) * 1943-03-28 1953-02-23 Hydrierwerke A G Deutsche Plasticizing, elasticizing and softening agents
DE861926C (en) * 1946-05-02 1953-01-08 Rhodiaceta Process for the treatment of polyurethane waste
DE929507C (en) * 1951-07-26 1955-06-27 Bayer Ag Process for the production of foams
DE831772C (en) * 1952-11-18 1952-02-18 Bayer Ag Process for the production of high molecular weight crosslinked plastics
DE961573C (en) * 1954-11-16 1957-04-11 Bayer Ag Process for the production of foams from linear or branched polyethers or polythioethers and polyisocyanates containing hydroxyl groups
DE962649C (en) * 1955-03-17 1957-04-25 Rudolph Koepp & Co Chem Fab A Process for the production of foams using polyurethane foam waste
BE548992A (en) * 1955-06-27 1900-01-01
DE1014739B (en) * 1955-07-11 1957-08-29 Continental Gummi Werke Ag Process for the production of foams from waste crosslinked polyurethane foams

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123577A (en) * 1964-03-03 Method of liquefying cellular
US3109824A (en) * 1960-11-14 1963-11-05 Mobay Chemical Corp Method of dissolving polyurethanes and polyureas using tall oil
US3117940A (en) * 1960-11-14 1964-01-14 Mobay Chemical Corp Method of dissolving polyurethanes
US3300417A (en) * 1963-07-02 1967-01-24 Mobay Chemical Corp Polyurethane plastics
US3406127A (en) * 1964-06-15 1968-10-15 Gulf Oil Corp Method for reclaiming scrap polymers
US4243560A (en) * 1978-04-07 1981-01-06 Centro Ricerche Fiat S.P.A. Method of recovering polyols from scrap polyurethane foam
GB2116572A (en) * 1982-03-05 1983-09-28 Kun Huang Chang High density flexible polyurethane foam
GB2266723A (en) * 1992-04-22 1993-11-10 Basf Corp Rigid polyurethane/polyisocyanurate foams containing paraffinic based oils
US5405885A (en) * 1992-04-22 1995-04-11 Basf Corporation Rigid polyurethane/polyisocyanate foams containing paraffinic based oils

Also Published As

Publication number Publication date
FR75831E (en) 1961-08-18
DE1100273B (en) 1961-02-23
NL93675C (en) 1959-10-15
CH362845A (en) 1962-06-30
FR1142230A (en) 1957-09-16
DE962649C (en) 1957-04-25

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