JPS5839666A - 低分子量4,4′−ジフェニルメタンウレトジオンジイソシアネ−トの製造法 - Google Patents

低分子量4,4′−ジフェニルメタンウレトジオンジイソシアネ−トの製造法

Info

Publication number
JPS5839666A
JPS5839666A JP57138060A JP13806082A JPS5839666A JP S5839666 A JPS5839666 A JP S5839666A JP 57138060 A JP57138060 A JP 57138060A JP 13806082 A JP13806082 A JP 13806082A JP S5839666 A JPS5839666 A JP S5839666A
Authority
JP
Japan
Prior art keywords
polar solvent
diphenylmethane
dimer
diisocyanate
quantification
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
JP57138060A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0349903B2 (Direct
Inventor
ゲルハルト・グレ−グラ−
リヒヤルト・コツプ
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6139106&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS5839666(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bayer AG filed Critical Bayer AG
Publication of JPS5839666A publication Critical patent/JPS5839666A/ja
Publication of JPH0349903B2 publication Critical patent/JPH0349903B2/ja
Granted legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D229/00Heterocyclic compounds containing rings of less than five members having two nitrogen atoms as the only ring hetero atoms
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/77Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78Nitrogen
    • C08G18/79Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/798Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing urethdione groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
JP57138060A 1981-08-12 1982-08-10 低分子量4,4′−ジフェニルメタンウレトジオンジイソシアネ−トの製造法 Granted JPS5839666A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813131779 DE3131779A1 (de) 1981-08-12 1981-08-12 Verfahren zur herstellung von niedermolekularen 4,4'-diphenylmethan-uretdion-diisocyanaten
DE3131779.0 1981-08-12

Publications (2)

Publication Number Publication Date
JPS5839666A true JPS5839666A (ja) 1983-03-08
JPH0349903B2 JPH0349903B2 (Direct) 1991-07-31

Family

ID=6139106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57138060A Granted JPS5839666A (ja) 1981-08-12 1982-08-10 低分子量4,4′−ジフェニルメタンウレトジオンジイソシアネ−トの製造法

Country Status (5)

Country Link
US (1) US4521338A (Direct)
EP (1) EP0071899B1 (Direct)
JP (1) JPS5839666A (Direct)
DE (2) DE3131779A1 (Direct)
ES (1) ES8305725A1 (Direct)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014097983A (ja) * 2012-11-13 2014-05-29 Ems-Patent Ag Mdi二量体の製造方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506834A1 (de) * 1985-02-27 1986-08-28 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von additionsverbindungen aus 1 mol dimerisiertem oder niedrig-oligodimerisiertem 4,4'-diisocyanatodiphenylmethan und 2 bis 3 mol 4,4'-diisocyanatodiphenylmethan, entsprechende additionsverbindungen und ihre verwendung zur polyurethanherstellung
DE3900053A1 (de) * 1989-01-03 1990-07-12 Bayer Ag Verfahren zur herstellung von uretdion- und isocyanuratgruppen aufweisenden polyisocyanaten, die nach diesem verfahren erhaeltlichen polyisocyanate und ihre verwendung in zweikomponenten-polyurethanlacken
EP0631574A4 (en) * 1992-03-16 1996-04-17 Olin Corp PRODUCTION OF ISOCYANATE DIMERS BY MEANS OF POLYMER-TIED CATALYSTS.
EP2159241B1 (de) * 2009-04-09 2011-05-25 Isochem Kautschuk GmbH Verfahren zur Herstellung von oligomeren Diphenylmethan-4,4'- und/oder Diphenylmethan-2,4'-diisocyanat-uretdionen
WO2013027707A1 (ja) * 2011-08-19 2013-02-28 Hoya株式会社 ウレタン系光学部材及びその製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683144A (en) * 1951-10-02 1954-07-06 Du Pont Polymerization of isocyanates
GB821158A (en) * 1957-01-09 1959-09-30 Ici Ltd Polymerisation of organic isocyanates
DE1445721A1 (de) * 1962-12-19 1969-01-23 Bayer Ag Verfahren zur Dimerisation aromatischer Isocyanate
GB1207673A (en) * 1967-01-02 1970-10-07 Ici Ltd New isocyanate compounds and the use thereof
US3919195A (en) * 1973-10-03 1975-11-11 Mansur Idiatullovich Bakhitov Process for producing 2,4-toluylenediisocyanate dimer
DE2419968A1 (de) * 1974-04-25 1975-12-18 Basf Ag Zaehe, waermealterungsbestaendige und verarbeitungsstabile polybutylenterephthalat-formmassen
DE2452390C2 (de) * 1974-11-05 1983-12-29 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen Herstellung von aromatischen Uretdiongruppen aufweisenden Polyisocyanaten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014097983A (ja) * 2012-11-13 2014-05-29 Ems-Patent Ag Mdi二量体の製造方法
US10047054B2 (en) 2012-11-13 2018-08-14 Ems-Patent Ag Method for the production of MDI dimer

Also Published As

Publication number Publication date
US4521338A (en) 1985-06-04
EP0071899B1 (de) 1985-03-20
DE3131779A1 (de) 1983-02-24
EP0071899A1 (de) 1983-02-16
DE3262668D1 (en) 1985-04-25
ES514904A0 (es) 1983-04-16
JPH0349903B2 (Direct) 1991-07-31
ES8305725A1 (es) 1983-04-16

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