IT972163B - Procedimento per la purificazione di isocianati organici rivolto in particolare alla riduzione di impu rezze di natura acida e contenenti cloro idrolizzabile in isocianati specialmente in poliisccianati grezzi - Google Patents
Procedimento per la purificazione di isocianati organici rivolto in particolare alla riduzione di impu rezze di natura acida e contenenti cloro idrolizzabile in isocianati specialmente in poliisccianati grezziInfo
- Publication number
- IT972163B IT972163B IT2731572A IT2731572A IT972163B IT 972163 B IT972163 B IT 972163B IT 2731572 A IT2731572 A IT 2731572A IT 2731572 A IT2731572 A IT 2731572A IT 972163 B IT972163 B IT 972163B
- Authority
- IT
- Italy
- Prior art keywords
- isocyanates
- polyisccyanates
- aimed
- purification
- raw
- Prior art date
Links
- 239000012948 isocyanate Substances 0.000 title 2
- 150000002513 isocyanates Chemical class 0.000 title 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 title 1
- 239000002253 acid Substances 0.000 title 1
- 229910052801 chlorine Inorganic materials 0.000 title 1
- 239000000460 chlorine Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000000746 purification Methods 0.000 title 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 |
|---|---|---|---|
| GB3597571A GB1362708A (en) | 1971-07-30 | 1971-07-30 | Process for the purification of organic isocyanates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT972163B true IT972163B (it) | 1974-05-20 |
Family
ID=10383572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2731572A IT972163B (it) | 1971-07-30 | 1972-07-22 | Procedimento per la purificazione di isocianati organici rivolto in particolare alla riduzione di impu rezze di natura acida e contenenti cloro idrolizzabile in isocianati specialmente in poliisccianati grezzi |
Country Status (8)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2625742B1 (fr) * | 1988-01-13 | 1990-06-22 | Rhone Poulenc Chimie | Procede de separation du toluene diisocyanate contenu dans les residus de sa fabrication |
| RU2128674C1 (ru) * | 1997-03-25 | 1999-04-10 | Закрытое акционерное общество Научно-производственное объединение "Видис" | Способ получения полиизоцианата и изоцианатная композиция (варианты) |
| DE19914291A1 (de) | 1999-03-30 | 2000-10-05 | Bayer Ag | Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten |
| DE19914292A1 (de) | 1999-03-30 | 2000-10-05 | Bayer Ag | Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten |
| DE19922572A1 (de) | 1999-05-17 | 2000-11-23 | Bayer Ag | Verfahren zur Reinigung von organischen Isocyanaten, die so gereinigten organischen Isocyanate und ihre Verwendung |
| DE10333929A1 (de) | 2003-07-25 | 2005-02-24 | Bayer Materialscience Ag | Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat |
| RU2300519C1 (ru) * | 2005-09-07 | 2007-06-10 | ОАО "Тольяттиазот" | Полиизоцианатная композиция |
| CN104093701B (zh) | 2012-01-25 | 2017-05-03 | 旭化成株式会社 | 分离方法 |
| CN117658863A (zh) * | 2023-12-07 | 2024-03-08 | 万华化学集团股份有限公司 | 一种光气化法制备异氰酸酯单体的方法 |
-
0
- BE BE786596D patent/BE786596A/xx unknown
-
1971
- 1971-07-30 GB GB3597571A patent/GB1362708A/en not_active Expired
-
1972
- 1972-07-20 AU AU44786/72A patent/AU4478672A/en not_active Expired
- 1972-07-22 IT IT2731572A patent/IT972163B/it active
- 1972-07-28 NL NL7210432A patent/NL7210432A/xx not_active Application Discontinuation
- 1972-07-28 FR FR7227324A patent/FR2149148A5/fr not_active Expired
- 1972-07-28 AR AR24332572A patent/AR192660A1/es active
- 1972-07-31 DE DE19722237552 patent/DE2237552A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| NL7210432A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-02-01 |
| FR2149148A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-03-23 |
| GB1362708A (en) | 1974-08-07 |
| AR192660A1 (es) | 1973-02-28 |
| DE2237552A1 (de) | 1973-02-15 |
| AU4478672A (en) | 1974-01-24 |
| BE786596A (fr) | 1973-01-22 |
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