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)
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/fr

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 (fr)
BE (1) BE856617A (fr)
DE (1) DE2631168B2 (fr)
ES (1) ES460560A1 (fr)
FR (1) FR2357532A1 (fr)
GB (1) GB1570741A (fr)

Families Citing this family (21)

* 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
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
DE19914291A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
DE19914292A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten
EP1475367B1 (fr) * 2003-05-08 2010-07-07 Bayer MaterialScience AG Procédé de séparation par distillation de mélanges d'isomères de diisocyanato diphénylméthane
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
US8907124B2 (en) 2010-11-17 2014-12-09 Basf Se Process for preparing methylenedi(phenyl isocyanate)
PT2640694T (pt) 2010-11-17 2019-04-29 Basf Se Processo para a preparação de metileno difenil diisocianato
US9505711B2 (en) 2010-11-17 2016-11-29 Basf Se Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
BR112013012094A2 (pt) * 2010-11-17 2016-08-16 Basf Se método para a purifação de misturas
EP2640695B1 (fr) * 2010-11-17 2015-01-07 Basf Se Procédé de purification de mélanges contenant du diisocyanate de 4,4'-méthylènediphényle
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
KR102618935B1 (ko) 2015-01-30 2023-12-27 바스프 에스이 낮은 부산물 함량의 폴리페닐렌 폴리메틸렌 폴리이소시아네이트
EP3498689A1 (fr) 2017-12-14 2019-06-19 Sulzer Chemtech AG Installation et procédé de purification d'un monomère d'isomères, tel que le diisocyanate de 4,4'-méthylènediphényle, à partir d'un mélange brut

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
GB1194459A (en) * 1967-10-31 1970-06-10 Takeda Chemical Industries Ltd Method for the Purification of Isocyanates
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
DE2631168B2 (de) 1979-03-08
ES460560A1 (es) 1978-05-16
GB1570741A (en) 1980-07-09
JPS539750A (en) 1978-01-28
DE2631168A1 (de) 1978-01-12
FR2357532B1 (fr) 1980-10-17
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