DE2035731C3 - Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten - Google Patents
Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen IsocyanatenInfo
- Publication number
- DE2035731C3 DE2035731C3 DE19702035731 DE2035731A DE2035731C3 DE 2035731 C3 DE2035731 C3 DE 2035731C3 DE 19702035731 DE19702035731 DE 19702035731 DE 2035731 A DE2035731 A DE 2035731A DE 2035731 C3 DE2035731 C3 DE 2035731C3
- Authority
- DE
- Germany
- Prior art keywords
- isocyanate
- residue
- residues
- concentrates
- monomeric
- 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
- 239000012948 isocyanate Substances 0.000 title claims description 40
- 150000002513 isocyanates Chemical class 0.000 title claims description 40
- 238000000034 method Methods 0.000 title claims description 15
- 238000000926 separation method Methods 0.000 title claims 9
- 238000004821 distillation Methods 0.000 title claims 3
- 239000012141 concentrate Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010626 work up procedure Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 239000005056 polyisocyanate Substances 0.000 claims description 2
- 229920001228 polyisocyanate Polymers 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 4
- 239000010409 thin film Substances 0.000 claims 4
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 2
- 150000001412 amines Chemical class 0.000 claims 2
- 239000006227 byproduct Substances 0.000 claims 2
- 150000001718 carbodiimides Chemical class 0.000 claims 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical class OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims 1
- 229920000570 polyether Polymers 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 8
- 238000009835 boiling Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- OVISMSJCKCDOPU-UHFFFAOYSA-N 1,6-dichlorohexane Chemical compound ClCCCCCCCl OVISMSJCKCDOPU-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- NOHQUGRVHSJYMR-UHFFFAOYSA-N 1-chloro-2-isocyanatobenzene Chemical compound ClC1=CC=CC=C1N=C=O NOHQUGRVHSJYMR-UHFFFAOYSA-N 0.000 description 1
- HHIRBXHEYVDUAM-UHFFFAOYSA-N 1-chloro-3-isocyanatobenzene Chemical compound ClC1=CC=CC(N=C=O)=C1 HHIRBXHEYVDUAM-UHFFFAOYSA-N 0.000 description 1
- ADAKRBAJFHTIEW-UHFFFAOYSA-N 1-chloro-4-isocyanatobenzene Chemical compound ClC1=CC=C(N=C=O)C=C1 ADAKRBAJFHTIEW-UHFFFAOYSA-N 0.000 description 1
- QWDQYHPOSSHSAW-UHFFFAOYSA-N 1-isocyanatooctadecane Chemical compound CCCCCCCCCCCCCCCCCCN=C=O QWDQYHPOSSHSAW-UHFFFAOYSA-N 0.000 description 1
- FEUFNKALUGDEMQ-UHFFFAOYSA-N 2-isocyanato-1,3-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC(C(C)C)=C1N=C=O FEUFNKALUGDEMQ-UHFFFAOYSA-N 0.000 description 1
- MFUVCHZWGSJKEQ-UHFFFAOYSA-N 3,4-dichlorphenylisocyanate Chemical compound ClC1=CC=C(N=C=O)C=C1Cl MFUVCHZWGSJKEQ-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- -1 Chlorine hexyl cyanate Chemical compound 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- KQWGXHWJMSMDJJ-UHFFFAOYSA-N cyclohexyl isocyanate Chemical compound O=C=NC1CCCCC1 KQWGXHWJMSMDJJ-UHFFFAOYSA-N 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- DLMVDBDHOIWEJZ-UHFFFAOYSA-N isocyanatooxyimino(oxo)methane Chemical compound O=C=NON=C=O DLMVDBDHOIWEJZ-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- DGTNSSLYPYDJGL-UHFFFAOYSA-N phenyl isocyanate Chemical compound O=C=NC1=CC=CC=C1 DGTNSSLYPYDJGL-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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)
Priority Applications (7)
| 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 |
| NL7109730A NL7109730A (OSRAM) | 1970-07-18 | 1971-07-14 | |
| GB3330271A GB1336385A (en) | 1970-07-18 | 1971-07-15 | Process for the continuous removal of distillation residues from crude isocyanates |
| FR7126222A FR2103035A5 (OSRAM) | 1970-07-18 | 1971-07-16 | |
| BE770137A BE770137A (fr) | 1970-07-18 | 1971-07-16 | Procede de separation en continu des residus de distillation des isocyanates bruts |
| ES393391A 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. |
| US440425A US3897314A (en) | 1970-07-18 | 1974-02-07 | Process for removing distillation residue from crude isocyanates |
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 (3)
| Publication Number | Publication Date |
|---|---|
| DE2035731A1 DE2035731A1 (OSRAM) | 1972-01-27 |
| DE2035731B2 DE2035731B2 (de) | 1979-03-01 |
| DE2035731C3 true DE2035731C3 (de) | 1985-08-29 |
Family
ID=5777174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702035731 Expired DE2035731C3 (de) | 1970-07-18 | 1970-07-18 | Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE770137A (OSRAM) |
| DE (1) | DE2035731C3 (OSRAM) |
| ES (1) | ES393391A1 (OSRAM) |
| FR (1) | FR2103035A5 (OSRAM) |
| GB (1) | GB1336385A (OSRAM) |
| NL (1) | NL7109730A (OSRAM) |
Families Citing this family (8)
| 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 |
| FR2397396A1 (fr) * | 1977-07-12 | 1979-02-09 | Ugine Kuhlmann | Procede de recuperation du toluene diisocyanate a partir des residus de fabrication |
| 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 |
| EP3597632A1 (de) | 2018-07-18 | 2020-01-22 | Covestro Deutschland AG | Verfahren zur rückgewinnung von diisocyanaten aus destillationsrückständen |
| 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
Non-Patent Citations (1)
| Title |
|---|
| NICHTS-ERMITTELT |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2035731B2 (de) | 1979-03-01 |
| NL7109730A (OSRAM) | 1972-01-20 |
| BE770137A (fr) | 1971-12-01 |
| FR2103035A5 (OSRAM) | 1972-04-07 |
| GB1336385A (en) | 1973-11-07 |
| DE2035731A1 (OSRAM) | 1972-01-27 |
| ES393391A1 (es) | 1973-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8281 | Inventor (new situation) |
Free format text: LIEBSCH, DIETRICH, DR., 5090 LEVERKUSEN, DE BECHER, DIETER, DR., 5672 LEICHLINGEN, DE KRESS, RUDOLF, DR., 5000 KOELN, DE SAUER, HEINZ, 5074 ODENTHAL, DE |
|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |