ES393391A1 - Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos. - Google Patents
Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos.Info
- Publication number
- ES393391A1 ES393391A1 ES393391A ES393391A ES393391A1 ES 393391 A1 ES393391 A1 ES 393391A1 ES 393391 A ES393391 A ES 393391A ES 393391 A ES393391 A ES 393391A ES 393391 A1 ES393391 A1 ES 393391A1
- Authority
- ES
- Spain
- Prior art keywords
- isocyanate
- continuous removal
- distillation residues
- concentrates
- pressure tank
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702035731 DE2035731C3 (de) | 1970-07-18 | 1970-07-18 | Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten |
Publications (1)
Publication Number | Publication Date |
---|---|
ES393391A1 true ES393391A1 (es) | 1973-08-16 |
Family
ID=5777174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES393391A Expired ES393391A1 (es) | 1970-07-18 | 1971-07-17 | Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos. |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE770137A (es) |
DE (1) | DE2035731C3 (es) |
ES (1) | ES393391A1 (es) |
FR (1) | FR2103035A5 (es) |
GB (1) | GB1336385A (es) |
NL (1) | NL7109730A (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118410A (en) | 1971-02-04 | 1978-10-03 | Gottfried Reuter Gmbh I.L. | Polyphenyl-polymethylene-polyisocyanate mixtures |
DD130143B1 (de) * | 1975-08-15 | 1979-12-27 | Guenter Muecke | Verfahren zur kontinuierlichen thermischen abtrennung organischer isocyanate aus fluessigem destillationsrueckstand |
DE2942678A1 (de) * | 1979-10-23 | 1981-05-07 | Bayer Ag, 5090 Leverkusen | Verfahren zur aufarbeitung von vernetzten, harnstoffgruppenhaltigen isocyanatdestillationsrueckstaenden und verwendung der verfahrensprodukte als ausgangskomponenten bei der herstellung von kunststoffen |
US6307096B1 (en) * | 1999-12-28 | 2001-10-23 | Bayer Corporation | Method for making aliphatic diisocyanates |
CN106006806A (zh) * | 2016-07-22 | 2016-10-12 | 株洲三特环保节能有限公司 | 一种热风和列管加热器相结合的废酸浓缩处理方法及装置 |
EP4121410A1 (de) | 2020-03-18 | 2023-01-25 | Covestro Deutschland AG | Verfahren sowie vorrichtung zur aufreinigung zähflüssiger und/oder fester isocyanate aus einem produktstrom der isocyanatsynthese |
-
1970
- 1970-07-18 DE DE19702035731 patent/DE2035731C3/de not_active Expired
-
1971
- 1971-07-14 NL NL7109730A patent/NL7109730A/xx unknown
- 1971-07-15 GB GB3330271A patent/GB1336385A/en not_active Expired
- 1971-07-16 FR FR7126222A patent/FR2103035A5/fr not_active Expired
- 1971-07-16 BE BE770137A patent/BE770137A/xx not_active IP Right Cessation
- 1971-07-17 ES ES393391A patent/ES393391A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2035731C3 (de) | 1985-08-29 |
DE2035731A1 (es) | 1972-01-27 |
FR2103035A5 (es) | 1972-04-07 |
NL7109730A (es) | 1972-01-20 |
DE2035731B2 (de) | 1979-03-01 |
GB1336385A (en) | 1973-11-07 |
BE770137A (fr) | 1971-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES399037A1 (es) | Procedimiento para la separacion de acido acrilico y acido acetico desde acido acrilico acuoso bruto. | |
ES311078A1 (es) | Procedimiento de preparacion de derivados funcionales de alcoholes | |
US1676700A (en) | Dehydrating alcohol and the like | |
ES393391A1 (es) | Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos. | |
ES398777A1 (es) | Procedimiento para la recuperacion del isopreno de mezclas que lo contengan. | |
ES272399A1 (es) | Procedimiento para la obtenciën de metanol puro a partir de metanol crudo sintetico | |
GB1326282A (en) | Process for the production of highly concentrated hydrogen peroxide | |
ES398140A1 (es) | Procedimiento para la purificacion de lactamas. | |
GB980196A (en) | Process for removing acetone and other carbonyl compounds from vinyl acetate | |
ES430654A1 (es) | Procedimiento para afinar cadmio bruto. | |
US2827490A (en) | Mesityl oxide | |
GB915873A (en) | Solvent recovery by distillation | |
GB829801A (en) | Improvements in or relating to ammonia still apparatus | |
GB1083677A (en) | Manufacture of adiponitrile | |
US2848386A (en) | Process for separation of methylamines | |
ES385509A1 (es) | Procedimiento de separacion de acido acetico, agua y acido formico. | |
ES379306A1 (es) | Un procedimiento para la separacion de los componentes de una disolucion que comprende componentes que hierven a menos | |
SU110643A1 (ru) | Способ ректификации этилового спирта | |
GB648752A (en) | Improvements in and relating to a method and apparatus for the recovery of phenols from aqueous liquors | |
GB1117066A (en) | Distillation process for tolylene diisocyanate | |
GB799501A (en) | Separation of ketals | |
US2460996A (en) | Production of 3-chloro methacrylonitrile | |
GB1021463A (en) | Process for separating acrylic acid ú¯-butyl ester from mixtures containing butanol | |
GB816209A (en) | Trimethylolpropane | |
ES211999A3 (es) | Un perfeccionamiento en los procedimientos de concentración y purificación del peróxido de hidrógeno por destilación |