ES460560A1 - Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano. - Google Patents

Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano.

Info

Publication number
ES460560A1
ES460560A1 ES460560A ES460560A ES460560A1 ES 460560 A1 ES460560 A1 ES 460560A1 ES 460560 A ES460560 A ES 460560A ES 460560 A ES460560 A ES 460560A ES 460560 A1 ES460560 A1 ES 460560A1
Authority
ES
Spain
Prior art keywords
diisocyanatodiphenylmethane
column
fraction
chlorine compounds
methaneisomers
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.)
Expired
Application number
ES460560A
Other languages
English (en)
Spanish (es)
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 ES460560A1 publication Critical patent/ES460560A1/es
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
ES460560A 1976-07-10 1977-07-08 Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano. Expired ES460560A1 (es)

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
ES460560A1 true ES460560A1 (es) 1978-05-16

Family

ID=5982715

Family Applications (1)

Application Number Title Priority Date Filing Date
ES460560A Expired ES460560A1 (es) 1976-07-10 1977-07-08 Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano.

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
JPS54103415A (en) * 1978-01-31 1979-08-14 Ricoh Kk Lens bonding
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
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
HUE030678T2 (hu) * 2010-11-17 2017-05-29 Basf Se Eljárás 4,4'-metilén-difenil-diizocianátot tartalmazó keverékek tisztítására
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)
BR112013012255A2 (pt) 2010-11-17 2016-08-09 Basf Se processo para preparar di - isocianato de metileno difenila
JP6046043B2 (ja) * 2010-11-17 2016-12-14 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ ４，４’−メチレンジフェニルジイソシアネートを含む混合物を精錬するための方法
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
EP3250622B1 (fr) 2015-01-30 2018-11-07 Basf Se Polyphénylène-polyméthylène-polyisocyanate à faible teneur en produits annexe
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
GB1570741A (en) 1980-07-09
DE2631168A1 (de) 1978-01-12
FR2357532B1 (fr) 1980-10-17
DE2631168B2 (de) 1979-03-08
BE856617A (fr) 1978-01-09
JPS539750A (en) 1978-01-28
FR2357532A1 (fr) 1978-02-03

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990601