DE3063318D1 - Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate - Google Patents

Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate

Info

Publication number
DE3063318D1
DE3063318D1 DE8080104104T DE3063318T DE3063318D1 DE 3063318 D1 DE3063318 D1 DE 3063318D1 DE 8080104104 T DE8080104104 T DE 8080104104T DE 3063318 T DE3063318 T DE 3063318T DE 3063318 D1 DE3063318 D1 DE 3063318D1
Authority
DE
Germany
Prior art keywords
tolylene diisocyanate
mixtures
separation
tolylene
diisocyanate
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
DE8080104104T
Other languages
English (en)
Inventor
Ronald Mittelman Yabroff
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of DE3063318D1 publication Critical patent/DE3063318D1/de
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)
DE8080104104T 1979-07-17 1980-07-15 Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate Expired DE3063318D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/058,154 US4246187A (en) 1979-07-17 1979-07-17 Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate

Publications (1)

Publication Number Publication Date
DE3063318D1 true DE3063318D1 (en) 1983-07-07

Family

ID=22015033

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080104104T Expired DE3063318D1 (en) 1979-07-17 1980-07-15 Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate

Country Status (7)

Country Link
US (1) US4246187A (de)
EP (1) EP0023015B1 (de)
JP (1) JPS5632444A (de)
BR (1) BR8004380A (de)
CA (1) CA1140583A (de)
DE (1) DE3063318D1 (de)
ES (1) ES493488A0 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220439A1 (de) * 1982-05-29 1983-12-01 Bayer Ag, 5090 Leverkusen Verfahren zur abtrennung von technisch reinem 2,4-diisocyanatotoluol oder von, einen erhoehten gehalt an 2,4-diisocyanatotoluol aufweisenden, isomerengemischen von, im wesentlichen aus 2,4- und 2,6-diisocyanatotoluol bestehenden, isomerengemischen
FR2566398B1 (fr) * 1984-06-21 1988-03-11 Rhone Poulenc Chim Base Procede de transformation d'un melange d'isomeres du diisocyanatotoluene en vue d'obtenir l'isomere-2,4 avec une purete technique ou un melange d'isomeres enrichi en l'isomere-2,4 et un melange d'isomeres enrichi en l'isomere-2,6
US4633018A (en) * 1985-12-20 1986-12-30 Uop Inc. Process for separating isomers of toluenediamine
US4721807A (en) * 1986-10-06 1988-01-26 Uop Inc. Process for separating 2,6-toluene diisocyanate from isomers of toluene diisocyanate
US4721806A (en) * 1986-10-06 1988-01-26 Uop Inc. Process for separating 2,4-toluene diisocyanate from isomers of toluene diisocyanate
DE4111212A1 (de) * 1991-04-06 1992-10-08 Bayer Ag Verfahren zur konditionierung und/oder reinigung von organischen isocyanaten
DE4200236A1 (de) * 1992-01-08 1993-07-15 Bayer Ag Verfahren zur isolierung von polyisocyanat-isomeren aus polyisocyanatgemischen
DE19645659A1 (de) * 1996-11-06 1998-05-07 Bayer Ag Verfahren zur Isomerentrennung von Isocyanaten
CN109970604B (zh) * 2019-04-25 2021-03-19 青岛科技大学 一种提纯2,4-甲苯二异氰酸酯的工艺

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217024A (en) * 1963-03-22 1965-11-09 Allied Chem Conversion of mixtures of 2, 4-and 2, 6-toluene diisocyanates to other mixtures of different isomer ratio
US3591617A (en) * 1968-03-07 1971-07-06 Lummus Co Purification of toluene diisocyanate

Also Published As

Publication number Publication date
ES8105973A1 (es) 1981-07-01
ES493488A0 (es) 1981-07-01
EP0023015A2 (de) 1981-01-28
US4246187A (en) 1981-01-20
JPS5632444A (en) 1981-04-01
BR8004380A (pt) 1981-01-27
EP0023015B1 (de) 1983-05-18
EP0023015A3 (en) 1981-04-15
CA1140583A (en) 1983-02-01

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee