BE856617A - Procede pour preparer des isomeres du diisocyanatodiphenyl-methane a teneur determinee en composes chlores - Google Patents

Procede pour preparer des isomeres du diisocyanatodiphenyl-methane a teneur determinee en composes chlores

Info

Publication number
BE856617A
BE856617A BE179183A BE179183A BE856617A BE 856617 A BE856617 A BE 856617A BE 179183 A BE179183 A BE 179183A BE 179183 A BE179183 A BE 179183A BE 856617 A BE856617 A BE 856617A
Authority
BE
Belgium
Prior art keywords
diisocyanatodiphenyl
methane
chlorine compounds
determined content
preparing isomers
Prior art date
Application number
BE179183A
Other languages
English (en)
French (fr)
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 BE856617A publication Critical patent/BE856617A/xx

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE179183A 1976-07-10 1977-07-08 Procede pour preparer des isomeres du diisocyanatodiphenyl-methane a teneur determinee en composes chlores BE856617A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762631168 DE2631168B2 (de) 1976-07-10 1976-07-10 Verfahren zur Herstellung von Diisocyanatodiphenylmethan-Isomeren mit einem eingestellten Gehalt an Chlorverbindungen

Publications (1)

Publication Number Publication Date
BE856617A true BE856617A (fr) 1978-01-09

Family

ID=5982715

Family Applications (1)

Application Number Title Priority Date Filing Date
BE179183A BE856617A (fr) 1976-07-10 1977-07-08 Procede pour preparer des isomeres du diisocyanatodiphenyl-methane a teneur determinee en composes chlores

Country Status (6)

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

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103415A (en) * 1978-01-31 1979-08-14 Ricoh Kk Lens bonding
JPS54102321A (en) * 1978-01-31 1979-08-11 Ricoh Kk Removing bubbles in lens bonding
JPS54102320A (en) * 1978-01-31 1979-08-11 Ricoh Kk Lens bonding and apparatus therefor
DE2935318A1 (de) * 1979-08-31 1981-03-26 Bayer Ag, 51373 Leverkusen Neue diisocyanate bzw. diisocyanatgemische der diphenylmethanreihe, verfahren zu ihrer herstellung, sowie ihre verwendung als aufbaukomponente bei der herstellung von polyurethankunststoffen nach dem isocyanat-polyadditionsverfahren
JPH02311452A (ja) * 1989-05-26 1990-12-27 Daicel Chem Ind Ltd ジイソシアネート化合物
JP2875877B2 (ja) * 1990-10-23 1999-03-31 三井化学株式会社 メチレン架橋ポリフェニレンポリイソシアネートの製造方法
DE19914292A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten
DE19914291A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
EP1475367B1 (de) * 2003-05-08 2010-07-07 Bayer MaterialScience AG Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102004005319A1 (de) 2004-02-04 2005-08-25 Bayer Materialscience Ag Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat
DE102005004170A1 (de) * 2005-01-29 2006-08-03 Bayer Materialscience Ag Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102005026864A1 (de) 2005-06-10 2006-12-14 Bayer Materialscience Ag Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
DE102005053065A1 (de) * 2005-11-04 2007-05-10 Basf Ag Verfahren zur Herstellung von Polyisocyanatgemischen
HUE030678T2 (hu) 2010-11-17 2017-05-29 Basf Se Eljárás 4,4'-metilén-difenil-diizocianátot tartalmazó keverékek tisztítására
CN103298781B (zh) 2010-11-17 2015-04-22 巴斯夫欧洲公司 制备亚甲基二苯基二异氰酸酯的方法
US8907124B2 (en) 2010-11-17 2014-12-09 Basf Se Process for preparing methylenedi(phenyl isocyanate)
EP2640695B1 (de) * 2010-11-17 2015-01-07 Basf Se Verfahren zur aufreinigung von 4,4'-methylendiphenyldiisocyanat enthaltenden mischungen
US9505711B2 (en) 2010-11-17 2016-11-29 Basf Se Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
JP2015010183A (ja) * 2013-06-28 2015-01-19 旭化成ケミカルズ株式会社 ジイソシアネート組成物
CN107207422B (zh) 2015-01-30 2020-12-11 巴斯夫欧洲公司 低副产物的多亚苯基多亚甲基多异氰酸酯
EP3498689A1 (en) * 2017-12-14 2019-06-19 Sulzer Chemtech AG A plant and method for purifying an isomeric monomer, such as 4,4'-methylene diphenyl diisocyanate, from a crude mixture

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 (de) * 1967-10-31 1969-06-26 Takeda Chemical Industries Ltd Verfahren zur Reinigung von Xylylendiisocyanat
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

Also Published As

Publication number Publication date
GB1570741A (en) 1980-07-09
DE2631168B2 (de) 1979-03-08
FR2357532B1 (enrdf_load_stackoverflow) 1980-10-17
ES460560A1 (es) 1978-05-16
JPS539750A (en) 1978-01-28
DE2631168A1 (de) 1978-01-12
FR2357532A1 (fr) 1978-02-03

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: BAYER A.G.

Effective date: 19840708