GB1336385A - Process for the continuous removal of distillation residues from crude isocyanates - Google Patents
Process for the continuous removal of distillation residues from crude isocyanatesInfo
- Publication number
- GB1336385A GB1336385A GB3330271A GB3330271A GB1336385A GB 1336385 A GB1336385 A GB 1336385A GB 3330271 A GB3330271 A GB 3330271A GB 3330271 A GB3330271 A GB 3330271A GB 1336385 A GB1336385 A GB 1336385A
- Authority
- GB
- United Kingdom
- Prior art keywords
- continuous removal
- isocyanate
- distillation residues
- july
- concentrates
- 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 abstract 5
- 150000002513 isocyanates Chemical class 0.000 title abstract 5
- 238000004821 distillation Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000012141 concentrate Substances 0.000 abstract 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 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)
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 |
|---|---|
| GB1336385A true GB1336385A (en) | 1973-11-07 |
Family
ID=5777174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3330271A Expired GB1336385A (en) | 1970-07-18 | 1971-07-15 | Process for the continuous removal of distillation residues from crude isocyanates |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE770137A (enExample) |
| DE (1) | DE2035731C3 (enExample) |
| ES (1) | ES393391A1 (enExample) |
| FR (1) | FR2103035A5 (enExample) |
| GB (1) | GB1336385A (enExample) |
| NL (1) | NL7109730A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US12139447B2 (en) | 2018-07-18 | 2024-11-12 | Covestro Deutschland Ag | Method for diisocyanate recovery from distillation residues with bitumen |
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 |
| 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 |
| 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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US12139447B2 (en) | 2018-07-18 | 2024-11-12 | Covestro Deutschland Ag | Method for diisocyanate recovery from distillation residues with bitumen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2035731B2 (de) | 1979-03-01 |
| NL7109730A (enExample) | 1972-01-20 |
| BE770137A (fr) | 1971-12-01 |
| FR2103035A5 (enExample) | 1972-04-07 |
| DE2035731A1 (enExample) | 1972-01-27 |
| DE2035731C3 (de) | 1985-08-29 |
| ES393391A1 (es) | 1973-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |