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
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)
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)
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 |
HUE031803T2 (en) * | 2012-07-11 | 2017-08-28 | Covestro Deutschland Ag | Process for processing distillation residues from the production of isocyanate |
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 |
CN110072845B (zh) * | 2016-12-21 | 2022-04-08 | 科思创德国股份有限公司 | 制备异氰酸酯的方法 |
Family Cites Families (6)
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 |
-
1988
- 1988-01-13 FR FR8800466A patent/FR2625742B1/fr not_active Expired - Lifetime
-
1989
- 1989-01-11 BR BR898900108A patent/BR8900108A/pt not_active IP Right Cessation
- 1989-01-11 DD DD89324994A patent/DD278337A5/de not_active IP Right Cessation
- 1989-01-11 YU YU4889A patent/YU46992B/sh unknown
- 1989-01-11 PL PL1989277152A patent/PL155845B1/pl unknown
- 1989-01-12 JP JP1005846A patent/JPH02758A/ja active Pending
- 1989-01-12 RU SU894613231A patent/RU1787155C/ru active
- 1989-01-12 CA CA000588054A patent/CA1311245C/fr not_active Expired - Lifetime
- 1989-01-12 ES ES198989420012T patent/ES2026737T3/es not_active Expired - Lifetime
- 1989-01-12 DE DE8989420012T patent/DE68900452D1/de not_active Expired - Fee Related
- 1989-01-12 EP EP89420012A patent/EP0324701B1/de not_active Expired - Lifetime
- 1989-01-13 US US07/296,810 patent/US4918220A/en not_active Expired - Lifetime
- 1989-01-13 KR KR1019890000334A patent/KR890011828A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US4918220A (en) | 1990-04-17 |
EP0324701A1 (de) | 1989-07-19 |
BR8900108A (pt) | 1989-09-05 |
CA1311245C (fr) | 1992-12-08 |
YU46992B (sh) | 1994-11-15 |
PL277152A1 (en) | 1989-09-18 |
RU1787155C (ru) | 1993-01-07 |
FR2625742A1 (fr) | 1989-07-13 |
YU4889A (en) | 1990-10-31 |
DD278337A5 (de) | 1990-05-02 |
FR2625742B1 (fr) | 1990-06-22 |
JPH02758A (ja) | 1990-01-05 |
EP0324701B1 (de) | 1991-11-27 |
KR890011828A (ko) | 1989-08-22 |
ES2026737T3 (es) | 1992-05-01 |
PL155845B1 (pl) | 1992-01-31 |
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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 |