ATE473207T1 - METHOD FOR DISTILLING A MIXTURE OF ISOMERIC DIISOCYANATODIPHENYLMETHANES - Google Patents

METHOD FOR DISTILLING A MIXTURE OF ISOMERIC DIISOCYANATODIPHENYLMETHANES

Info

Publication number
ATE473207T1
ATE473207T1 AT04009786T AT04009786T ATE473207T1 AT E473207 T1 ATE473207 T1 AT E473207T1 AT 04009786 T AT04009786 T AT 04009786T AT 04009786 T AT04009786 T AT 04009786T AT E473207 T1 ATE473207 T1 AT E473207T1
Authority
AT
Austria
Prior art keywords
mixture
distilling
isomeric diisocyanatodiphenylmethanes
diisocyanatodiphenylmethanes
isomeric
Prior art date
Application number
AT04009786T
Other languages
German (de)
Inventor
Hans-Peter Schal
Ulrich Wolf
Bernd Thelen
Original Assignee
Bayer Materialscience 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 Materialscience Ag filed Critical Bayer Materialscience Ag
Application granted granted Critical
Publication of ATE473207T1 publication Critical patent/ATE473207T1/en

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)

Abstract

A mixture of isomeric diisocyanatodiphenylmethanes composed of at least 2,2'-diisocyanato-diphenylmethane, 2,4'-diisocyanatodiphenylmethane and 4,4'-diisocyanatodiphenyl-methane is distilled in at least one stage and a divided-wall column is used in at least one distillation stage.
AT04009786T 2003-05-08 2004-04-24 METHOD FOR DISTILLING A MIXTURE OF ISOMERIC DIISOCYANATODIPHENYLMETHANES ATE473207T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320504 2003-05-08
DE102004001872A DE102004001872A1 (en) 2003-05-08 2004-01-14 Process for distilling a mixture of isomeric diisocyanatodiphenylmethanes

Publications (1)

Publication Number Publication Date
ATE473207T1 true ATE473207T1 (en) 2010-07-15

Family

ID=33440660

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04009786T ATE473207T1 (en) 2003-05-08 2004-04-24 METHOD FOR DISTILLING A MIXTURE OF ISOMERIC DIISOCYANATODIPHENYLMETHANES

Country Status (5)

Country Link
AT (1) ATE473207T1 (en)
DE (2) DE102004001872A1 (en)
ES (1) ES2346873T3 (en)
PT (1) PT1475367E (en)
TW (1) TW200505827A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG11201913269XA (en) * 2017-09-28 2020-04-29 Exxonmobil Res & Eng Co Dual-dividing wall column with multiple products

Also Published As

Publication number Publication date
PT1475367E (en) 2010-09-06
DE502004011353D1 (en) 2010-08-19
ES2346873T3 (en) 2010-10-21
DE102004001872A1 (en) 2004-12-09
TW200505827A (en) 2005-02-16

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