JPS4862737A - - Google Patents

Info

Publication number
JPS4862737A
JPS4862737A JP12029472A JP12029472A JPS4862737A JP S4862737 A JPS4862737 A JP S4862737A JP 12029472 A JP12029472 A JP 12029472A JP 12029472 A JP12029472 A JP 12029472A JP S4862737 A JPS4862737 A JP S4862737A
Authority
JP
Japan
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.)
Pending
Application number
JP12029472A
Other languages
Japanese (ja)
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 JPS4862737A publication Critical patent/JPS4862737A/ja
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
JP12029472A 1971-11-30 1972-11-30 Pending JPS4862737A (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
JPS4862737A true JPS4862737A (en) 1973-09-01

Family

ID=10474102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12029472A Pending JPS4862737A (en) 1971-11-30 1972-11-30

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50154210A (en) * 1974-06-04 1975-12-12

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH051014A (en) * 1991-01-28 1993-01-08 Dow Chem Co:The Method for decreasing hydrolyzable chloride in toluene diisocyanate
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
KR102618935B1 (en) 2015-01-30 2023-12-27 바스프 에스이 Polyphenylene polymethylene polyisocyanate with low by-product content

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50154210A (en) * 1974-06-04 1975-12-12
JPS5337852B2 (en) * 1974-06-04 1978-10-12

Also Published As

Publication number Publication date
AU4904072A (en) 1974-05-23
GB1384065A (en) 1975-02-19
NL7215795A (en) 1973-06-04

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