ES417586A1 - Process for linearising cross-linked polymers with polyisocyanates - Google Patents

Process for linearising cross-linked polymers with polyisocyanates

Info

Publication number
ES417586A1
ES417586A1 ES417586A ES417586A ES417586A1 ES 417586 A1 ES417586 A1 ES 417586A1 ES 417586 A ES417586 A ES 417586A ES 417586 A ES417586 A ES 417586A ES 417586 A1 ES417586 A1 ES 417586A1
Authority
ES
Spain
Prior art keywords
polyisocyanates
linearising
cross
linked polymers
molecular weight
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
ES417586A
Other languages
Spanish (es)
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of ES417586A1 publication Critical patent/ES417586A1/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
    • C08J11/28—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 compounds containing nitrogen, sulfur or phosphorus
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • 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
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedure for linearizing isocyanate polyaddition products, which are crosslinked via allophanate, biuret and uretonimine groups, characterized in that the high molecular weight crosslinked polyaddition products are reacted, in the presence of polar solvents, with polyisocyanates low molecular weight and/or with modified polyisocyanates containing NCO groups, at temperatures between 90 and 200ºC, preferably between 110 and 140ºC. (Machine-translation by Google Translate, not legally binding)
ES417586A 1972-08-05 1973-08-04 Process for linearising cross-linked polymers with polyisocyanates Expired ES417586A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2238741A DE2238741A1 (en) 1972-08-05 1972-08-05 METHOD FOR LINEARIZATION OF CROSS-LINKED ISOCYANATE POLYADDITION PRODUCTS WITH POLYISOCYANATES

Publications (1)

Publication Number Publication Date
ES417586A1 true ES417586A1 (en) 1976-03-16

Family

ID=5852848

Family Applications (1)

Application Number Title Priority Date Filing Date
ES417586A Expired ES417586A1 (en) 1972-08-05 1973-08-04 Process for linearising cross-linked polymers with polyisocyanates

Country Status (11)

Country Link
JP (1) JPS4953693A (en)
BE (1) BE803215A (en)
CA (1) CA1023498A (en)
DE (1) DE2238741A1 (en)
ES (1) ES417586A1 (en)
FR (1) FR2194738B1 (en)
GB (1) GB1422884A (en)
IE (1) IE37971B1 (en)
IT (1) IT990129B (en)
LU (1) LU68145A1 (en)
NL (1) NL7310718A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10211311A1 (en) * 2002-03-14 2003-08-07 Wacker Chemie Gmbh Production of N-(triorganylsilylmethyl)-substituted 1,2-diaminoethanes, useful for the production of silyl terminated urea derivatives, comprises reaction of a halomethyltriorganylsilane with ethylenediamine
DE10237271A1 (en) * 2002-08-14 2004-03-04 Consortium für elektrochemische Industrie GmbH Polymer masses based on alkoxysilane-terminated polymers with adjustable curing speed
DE10352907A1 (en) 2002-11-15 2004-08-05 Henkel Kgaa Prepolymers with alkoxysilylalkylgroups attached to the polymeric backbone by hetero-atoms, used for the production of adhesives and polyurethane foam in cans
DE102007032342A1 (en) 2007-07-11 2009-01-15 Bayer Materialscience Ag Process for the preparation of polyurethane foams based on special alkoxysilane-functional polymers
WO2020225310A1 (en) * 2019-05-06 2020-11-12 Basf Coatings Gmbh Silane-based coating composition

Family Cites Families (1)

* 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

Also Published As

Publication number Publication date
IE37971L (en) 1974-02-05
FR2194738A1 (en) 1974-03-01
IE37971B1 (en) 1977-11-23
LU68145A1 (en) 1973-10-16
IT990129B (en) 1975-06-20
BE803215A (en) 1974-02-04
GB1422884A (en) 1976-01-28
JPS4953693A (en) 1974-05-24
DE2238741A1 (en) 1974-02-07
CA1023498A (en) 1977-12-27
NL7310718A (en) 1974-02-07
FR2194738B1 (en) 1979-04-20

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