DE68900452D1 - Verfahren zur trennung von toluoldiisocyanat aus seinen herstellungsrueckstaenden. - Google Patents

Verfahren zur trennung von toluoldiisocyanat aus seinen herstellungsrueckstaenden.

Info

Publication number
DE68900452D1
DE68900452D1 DE8989420012T DE68900452T DE68900452D1 DE 68900452 D1 DE68900452 D1 DE 68900452D1 DE 8989420012 T DE8989420012 T DE 8989420012T DE 68900452 T DE68900452 T DE 68900452T DE 68900452 D1 DE68900452 D1 DE 68900452D1
Authority
DE
Germany
Prior art keywords
separating
production residues
toluol diisocyanate
toluol
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 - Fee Related
Application number
DE8989420012T
Other languages
English (en)
Inventor
Gerard Collas
Georges Gros
Ferenc Sagi
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.)
Rhodia Chimie SAS
Original Assignee
Rhone Poulenc Chimie SA
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 Rhone Poulenc Chimie SA filed Critical Rhone Poulenc Chimie SA
Application granted granted Critical
Publication of DE68900452D1 publication Critical patent/DE68900452D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Processing Of Solid Wastes (AREA)
DE8989420012T 1988-01-13 1989-01-12 Verfahren zur trennung von toluoldiisocyanat aus seinen herstellungsrueckstaenden. Expired - Fee Related DE68900452D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8800466A FR2625742B1 (fr) 1988-01-13 1988-01-13 Procede de separation du toluene diisocyanate contenu dans les residus de sa fabrication

Publications (1)

Publication Number Publication Date
DE68900452D1 true DE68900452D1 (de) 1992-01-09

Family

ID=9362375

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989420012T Expired - Fee Related DE68900452D1 (de) 1988-01-13 1989-01-12 Verfahren zur trennung von toluoldiisocyanat aus seinen herstellungsrueckstaenden.

Country Status (13)

Country Link
US (1) US4918220A (de)
EP (1) EP0324701B1 (de)
JP (1) JPH02758A (de)
KR (1) KR890011828A (de)
BR (1) BR8900108A (de)
CA (1) CA1311245C (de)
DD (1) DD278337A5 (de)
DE (1) DE68900452D1 (de)
ES (1) ES2026737T3 (de)
FR (1) FR2625742B1 (de)
PL (1) PL155845B1 (de)
RU (1) RU1787155C (de)
YU (1) YU46992B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051152A (en) * 1989-09-26 1991-09-24 Air Products And Chemicals, Inc. Preparation of urethane prepolymers having low levels of residual toluene diisocyanate
US5962728A (en) * 1997-10-31 1999-10-05 Arco Chemical Technology, L.P. Isocyanate residue purification
US6160086A (en) * 1998-07-30 2000-12-12 3M Innovative Properties Company Process for removing impurities from polymers
US6307096B1 (en) 1999-12-28 2001-10-23 Bayer Corporation Method for making aliphatic diisocyanates
DE10037772A1 (de) * 2000-08-03 2002-02-14 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes in niedermolekularen Isocyanaten
CN101870666B (zh) * 2010-05-23 2013-04-10 青岛科技大学 甲苯二异氰酸酯生产中尾气吸收溶剂的精制回收工艺
KR102048110B1 (ko) * 2012-07-11 2019-11-22 코베스트로 도이칠란드 아게 이소시아네이트 제조에서 증류 잔류물의 후처리 방법
CN105461594B (zh) * 2015-12-14 2017-10-27 青岛科技大学 一种降低重溶剂法tdi产品酸值的方法
KR102596786B1 (ko) * 2016-12-21 2023-11-02 코베스트로 도이칠란트 아게 이소시아네이트를 제조하는 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1555515A (de) * 1966-05-05 1969-01-31
US3652705A (en) * 1968-10-03 1972-03-28 Mitsui Petrochemical Ind Process for the oligomerization of ethylene
CA998060A (en) * 1970-05-22 1976-10-05 Carl F. Irwin Recovery of organic isocyanate
GB1408745A (en) * 1970-09-23 1975-10-01 Res Ind Inc Method of recovering pure toluene diisocyanate from a polymeric residue product
BE786596A (fr) * 1971-07-30 1973-01-22 Ici Ltd Purification d'isocyanates organiques
FR2397396A1 (fr) * 1977-07-12 1979-02-09 Ugine Kuhlmann Procede de recuperation du toluene diisocyanate a partir des residus de fabrication

Also Published As

Publication number Publication date
FR2625742B1 (fr) 1990-06-22
ES2026737T3 (es) 1992-05-01
YU46992B (sh) 1994-11-15
PL155845B1 (pl) 1992-01-31
DD278337A5 (de) 1990-05-02
EP0324701B1 (de) 1991-11-27
US4918220A (en) 1990-04-17
RU1787155C (ru) 1993-01-07
EP0324701A1 (de) 1989-07-19
JPH02758A (ja) 1990-01-05
YU4889A (en) 1990-10-31
BR8900108A (pt) 1989-09-05
PL277152A1 (en) 1989-09-18
KR890011828A (ko) 1989-08-22
FR2625742A1 (fr) 1989-07-13
CA1311245C (fr) 1992-12-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee