JPS539750A - Process for preparing diisocyanate diphenyl methane isomer adjusted content of chlorinated compound - Google Patents

Process for preparing diisocyanate diphenyl methane isomer adjusted content of chlorinated compound

Info

Publication number
JPS539750A
JPS539750A JP8111477A JP8111477A JPS539750A JP S539750 A JPS539750 A JP S539750A JP 8111477 A JP8111477 A JP 8111477A JP 8111477 A JP8111477 A JP 8111477A JP S539750 A JPS539750 A JP S539750A
Authority
JP
Japan
Prior art keywords
diphenyl methane
chlorinated compound
adjusted content
diisocyanate diphenyl
methane isomer
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.)
Pending
Application number
JP8111477A
Other languages
Japanese (ja)
Inventor
Erento Giyunteru
Fuitsushieru Heruman
Fuitsushieru Peeteru
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 JPS539750A publication Critical patent/JPS539750A/en
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
JP8111477A 1976-07-10 1977-07-08 Process for preparing diisocyanate diphenyl methane isomer adjusted content of chlorinated compound Pending JPS539750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762631168 DE2631168B2 (en) 1976-07-10 1976-07-10 Process for the preparation of diisocyanatodiphenylmethane isomers with an adjusted content of chlorine compounds

Publications (1)

Publication Number Publication Date
JPS539750A true JPS539750A (en) 1978-01-28

Family

ID=5982715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8111477A Pending JPS539750A (en) 1976-07-10 1977-07-08 Process for preparing diisocyanate diphenyl methane isomer adjusted content of chlorinated compound

Country Status (6)

Country Link
JP (1) JPS539750A (en)
BE (1) BE856617A (en)
DE (1) DE2631168B2 (en)
ES (1) ES460560A1 (en)
FR (1) FR2357532A1 (en)
GB (1) GB1570741A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54102320A (en) * 1978-01-31 1979-08-11 Ricoh Kk Lens bonding and apparatus therefor
JPS54102321A (en) * 1978-01-31 1979-08-11 Ricoh Kk Removing bubbles in lens bonding
JPS54103415A (en) * 1978-01-31 1979-08-14 Ricoh Kk Lens bonding
JPH02311452A (en) * 1989-05-26 1990-12-27 Daicel Chem Ind Ltd Diisocyanate compound
JP2004331667A (en) * 2003-05-08 2004-11-25 Bayer Materialscience Ag Distillation process for separating diisocyanatodiphenylmethane isomers
JP2005225879A (en) * 2004-02-04 2005-08-25 Bayer Materialscience Ag Method for producing very pure 2,4'-methylene diphenyl diisocyanate
JP2006206593A (en) * 2005-01-29 2006-08-10 Bayer Materialscience Ag Method for producing 2,4'-mdi
JP2014500878A (en) * 2010-11-17 2014-01-16 ビーエーエスエフ ソシエタス・ヨーロピア Process for refining a mixture comprising 4,4'-methylenediphenyl diisocyanate
JP2014504274A (en) * 2010-11-17 2014-02-20 ビーエーエスエフ ソシエタス・ヨーロピア Process for refining a mixture comprising 4,4'-methylenediphenyl diisocyanate
JP2015010183A (en) * 2013-06-28 2015-01-19 旭化成ケミカルズ株式会社 Diisocyanate composition
JP2021506755A (en) * 2017-12-14 2021-02-22 ズルツァー マネジメント アクチエンゲゼルシャフト Plants and methods for purifying isomer monomers such as 4,4'-methylenediphenyldiisocyanate from crude mixtures

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935318A1 (en) * 1979-08-31 1981-03-26 Bayer Ag, 51373 Leverkusen NEW DIISOCYANATES OR DIISOCYANATE MIXTURES OF THE DIPHENYLMETHANE SERIES, METHOD FOR THE PRODUCTION THEREOF, AND THEIR USE AS CONSTRUCTION COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS BY THE ISOCYANATE POLYADDITION METHOD
JP2875877B2 (en) * 1990-10-23 1999-03-31 三井化学株式会社 Method for producing methylene-crosslinked polyphenylene polyisocyanate
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
DE102005026864A1 (en) 2005-06-10 2006-12-14 Bayer Materialscience Ag Process for the preparation of 4,4'-diphenylmethane diisocyanate
DE102005053065A1 (en) * 2005-11-04 2007-05-10 Basf Ag Process for the preparation of polyisocyanate mixtures
BR112013012255A2 (en) 2010-11-17 2016-08-09 Basf Se process for preparing methylene diphenyl diisocyanate
US9505711B2 (en) 2010-11-17 2016-11-29 Basf Se Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
US8907124B2 (en) 2010-11-17 2014-12-09 Basf Se Process for preparing methylenedi(phenyl isocyanate)
US10501406B2 (en) 2015-01-30 2019-12-10 Basf Se Low by-product content polyphenylene polymethylene polyisocyanates

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219678A (en) * 1963-02-28 1965-11-23 Olin Mathieson Process for reducing the hydrolyzable chlorine content of organic isocyanates
DE1805957A1 (en) * 1967-10-31 1969-06-26 Takeda Chemical Industries Ltd Purification of xylylene diisocyanate by fractional
GB1398975A (en) * 1971-08-16 1975-06-25 Ici Ltd Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates
GB1384065A (en) * 1971-11-30 1975-02-19 Ici Ltd Process for the purification of organic isocyanates
US3853936A (en) * 1973-02-05 1974-12-10 Olin Corp Process for distillation of toluene diisocyanate
US3912600A (en) * 1974-05-09 1975-10-14 Upjohn Co Recovery of polymethylene polyphenyl polyisocyanate from a phoshenosed polyamine feed

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54102320A (en) * 1978-01-31 1979-08-11 Ricoh Kk Lens bonding and apparatus therefor
JPS54102321A (en) * 1978-01-31 1979-08-11 Ricoh Kk Removing bubbles in lens bonding
JPS54103415A (en) * 1978-01-31 1979-08-14 Ricoh Kk Lens bonding
JPS6235983B2 (en) * 1978-01-31 1987-08-05 Rikoo Kk
JPH02311452A (en) * 1989-05-26 1990-12-27 Daicel Chem Ind Ltd Diisocyanate compound
JP2004331667A (en) * 2003-05-08 2004-11-25 Bayer Materialscience Ag Distillation process for separating diisocyanatodiphenylmethane isomers
JP2005225879A (en) * 2004-02-04 2005-08-25 Bayer Materialscience Ag Method for producing very pure 2,4'-methylene diphenyl diisocyanate
JP2006206593A (en) * 2005-01-29 2006-08-10 Bayer Materialscience Ag Method for producing 2,4'-mdi
JP2014500878A (en) * 2010-11-17 2014-01-16 ビーエーエスエフ ソシエタス・ヨーロピア Process for refining a mixture comprising 4,4'-methylenediphenyl diisocyanate
JP2014504274A (en) * 2010-11-17 2014-02-20 ビーエーエスエフ ソシエタス・ヨーロピア Process for refining a mixture comprising 4,4'-methylenediphenyl diisocyanate
JP2015010183A (en) * 2013-06-28 2015-01-19 旭化成ケミカルズ株式会社 Diisocyanate composition
JP2021506755A (en) * 2017-12-14 2021-02-22 ズルツァー マネジメント アクチエンゲゼルシャフト Plants and methods for purifying isomer monomers such as 4,4'-methylenediphenyldiisocyanate from crude mixtures
US11613518B2 (en) 2017-12-14 2023-03-28 Sulzer Management Ag Plant and method for purifying an isomeric monomer

Also Published As

Publication number Publication date
GB1570741A (en) 1980-07-09
ES460560A1 (en) 1978-05-16
FR2357532A1 (en) 1978-02-03
BE856617A (en) 1978-01-09
FR2357532B1 (en) 1980-10-17
DE2631168A1 (en) 1978-01-12
DE2631168B2 (en) 1979-03-08

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