NL7215795A - - Google Patents

Info

Publication number
NL7215795A
NL7215795A NL7215795A NL7215795A NL7215795A NL 7215795 A NL7215795 A NL 7215795A NL 7215795 A NL7215795 A NL 7215795A NL 7215795 A NL7215795 A NL 7215795A NL 7215795 A NL7215795 A NL 7215795A
Authority
NL
Netherlands
Application number
NL7215795A
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 filed Critical
Publication of NL7215795A publication Critical patent/NL7215795A/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00Preparation of derivatives of isocyanic acid
    • C07C263/18Separation; Purification; Stabilisation; Use of additives
    • C07C263/20Separation; Purification
    • 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
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • 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
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL7215795A 1971-11-30 1972-11-22 NL7215795A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5549771A GB1384065A (en) 1971-11-30 1971-11-30 Process for the purification of organic isocyanates

Publications (1)

Publication Number Publication Date
NL7215795A true NL7215795A (en) 1973-06-04

Family

ID=10474102

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7215795A NL7215795A (en) 1971-11-30 1972-11-22

Country Status (4)

Country Link
JP (1) JPS4862737A (en)
AU (1) AU4904072A (en)
GB (1) GB1384065A (en)
NL (1) NL7215795A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337852B2 (en) * 1974-06-04 1978-10-12
DE2631168B2 (en) * 1976-07-10 1979-03-08 Bayer Ag, 5090 Leverkusen Process for the preparation of diisocyanatodiphenylmethane isomers with an adjusted content of chlorine compounds
JP2875877B2 (en) * 1990-10-23 1999-03-31 三井化学株式会社 Method for producing methylene-crosslinked polyphenylene polyisocyanate
US5185384A (en) * 1991-01-28 1993-02-09 The Dow Chemical Company Method for reducing hydrolyzable chloride in toluene diisocyanate
BR9200378A (en) * 1991-01-28 1992-10-13 Dow Chemical Co PROCESS FOR THE PREPARATION OF REACTIVE DIESOCIANATE TOLUENE DISTILLATION SUPPORTS AND STABLE VISCOSITY AND DIISOCIANATE TOLUENE HAVING REDUCED HYDROLYSABLE CHLORIDE LEVELS
DE19914292A1 (en) 1999-03-30 2000-10-05 Bayer Ag Reduction of the chorine content of low molecular isocyanates comprises reaction with a tertiary or quaternary amine group containing anion exchanger for ten minutes at less than two hundred degrees
DE19914291A1 (en) 1999-03-30 2000-10-05 Bayer Ag Process for the purification of a low molecular isocyanate, comprises addition of an oligomeric organic polyphosphate compound and heating for ten minutes below two hundred degrees
DE19922572A1 (en) 1999-05-17 2000-11-23 Bayer Ag Process for the purification of organic isocyanates, the organic isocyanates thus purified and their use
US9505711B2 (en) * 2010-11-17 2016-11-29 Basf Se Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
US20120123153A1 (en) * 2010-11-17 2012-05-17 Basf Se Method for purifying mixtures comprising 4,4'-methylenediphenyl diisocyanate
EP3250622B1 (en) 2015-01-30 2018-11-07 Basf Se Polyphenylene polymethylene polyisocyanates with low by-products

Also Published As

Publication number Publication date
AU4904072A (en) 1974-05-23
JPS4862737A (en) 1973-09-01
GB1384065A (en) 1975-02-19

Similar Documents

Publication Publication Date Title
ATA136472A (en)
JPS4862737A (en)
AR196074A1 (en)
AU2941471A (en)
AU2952271A (en)
AU3005371A (en)
AU3102871A (en)
AU2564071A (en)
AU2485671A (en)
AU2455871A (en)
AU2456871A (en)
AU2940971A (en)
AR199640Q (en)
AR202997Q (en)
AU2963771A (en)
AU2577671A (en)
AU3025871A (en)
AU3038671A (en)
AU2503871A (en)
AU2486471A (en)
AR192311Q (en)
AU1109576A (en)
AU2399971A (en)
AU2473671A (en)
AU2415871A (en)

Legal Events

Date Code Title Description
BV The patent application has lapsed