ES2176560T3 - Procedimiento para la purificacion de diuretanos por destilacion. - Google Patents

Procedimiento para la purificacion de diuretanos por destilacion.

Info

Publication number
ES2176560T3
ES2176560T3 ES97110632T ES97110632T ES2176560T3 ES 2176560 T3 ES2176560 T3 ES 2176560T3 ES 97110632 T ES97110632 T ES 97110632T ES 97110632 T ES97110632 T ES 97110632T ES 2176560 T3 ES2176560 T3 ES 2176560T3
Authority
ES
Spain
Prior art keywords
distillation
diurethans
purification
procedure
diuretans
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 - Lifetime
Application number
ES97110632T
Other languages
English (en)
Inventor
Erwin Dr Kaltenbacher
Christine Dr Mendoza-Frohn
Stefan Dr Penninger
Stefan Dr Wershofen
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
Application granted granted Critical
Publication of ES2176560T3 publication Critical patent/ES2176560T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C269/00—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C269/08—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

LOS DIURETANOS DE FORMULA GENERAL PUEDEN PURIFICARSE DESTILATIVAMENTE REALIZANDO LA DESTILACION DEL DIURETANO EN PRESENCIA DE ALCOHOLES DE BAJO PUNTO DE EBULLICION A ELEVADA TEMPERATURA.
ES97110632T 1996-07-11 1997-06-30 Procedimiento para la purificacion de diuretanos por destilacion. Expired - Lifetime ES2176560T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19627906A DE19627906A1 (de) 1996-07-11 1996-07-11 Verfahren zur destillativen Reinigung von Diurethanen

Publications (1)

Publication Number Publication Date
ES2176560T3 true ES2176560T3 (es) 2002-12-01

Family

ID=7799515

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97110632T Expired - Lifetime ES2176560T3 (es) 1996-07-11 1997-06-30 Procedimiento para la purificacion de diuretanos por destilacion.

Country Status (5)

Country Link
EP (1) EP0818441B1 (es)
JP (1) JP4119503B2 (es)
CA (1) CA2209754A1 (es)
DE (2) DE19627906A1 (es)
ES (1) ES2176560T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008120645A1 (ja) 2007-03-30 2008-10-09 Asahi Kasei Chemicals Corporation カルバミン酸エステルおよび芳香族ヒドロキシ化合物を含む組成物を用いるイソシアネートの製造方法、ならびにカルバミン酸エステル移送用および貯蔵用組成物
EP2982665B1 (en) * 2013-04-03 2018-06-27 Mitsui Chemicals, Inc. Xylylene dicarbamate, method for producing xylylene diisocyanate, xylylene diisocyanate, and method for preserving xylylene dicarbamate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141402A1 (de) * 1991-12-16 1993-06-17 Bayer Ag Verfahren zur herstellung von hochreinen aromatischen di- und/oder polyurethanen
DE19523386A1 (de) * 1995-06-23 1997-01-09 Bayer Ag Verfahren zur Entfernung von Nebenprodukten aus Diurethanen

Also Published As

Publication number Publication date
EP0818441A1 (de) 1998-01-14
DE19627906A1 (de) 1998-01-15
EP0818441B1 (de) 2002-05-02
DE59707130D1 (de) 2002-06-06
JP4119503B2 (ja) 2008-07-16
CA2209754A1 (en) 1998-01-11
JPH1087598A (ja) 1998-04-07

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