IN2012DN06523A - - Google Patents
Download PDFInfo
- Publication number
- IN2012DN06523A IN2012DN06523A IN6523DEN2012A IN2012DN06523A IN 2012DN06523 A IN2012DN06523 A IN 2012DN06523A IN 6523DEN2012 A IN6523DEN2012 A IN 6523DEN2012A IN 2012DN06523 A IN2012DN06523 A IN 2012DN06523A
- Authority
- IN
- India
- Prior art keywords
- polyisocyanate
- solvent
- polyamine
- recovering
- evaporation
- Prior art date
Links
- 229920001228 polyisocyanate Polymers 0.000 abstract 4
- 239000005056 polyisocyanate Substances 0.000 abstract 4
- 239000002904 solvent Substances 0.000 abstract 3
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 239000012442 inert solvent Substances 0.000 abstract 2
- 239000012948 isocyanate Substances 0.000 abstract 2
- 150000002513 isocyanates Chemical class 0.000 abstract 2
- 229920000768 polyamine Polymers 0.000 abstract 2
- 239000011541 reaction mixture Substances 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
A process for the production of a polyisocyanate comprising (a) phosgenating a polyamine to form a polyisocyanate by reacting (1) the polyamine on which the polyisocyanate is based in solution in an inert solvent with (2) phosgene optionally in solution in an inert solvent, (b) separating any excess phosgene and any hydrogen chloride formed during the reaction of (a) from the reaction mixture, (c) separating the solvent and any highly volatile compounds containing isocyanate groups from the reaction mixture remaining after step (b) by evaporation, (d) recovering the product polyisocyanate which is the residue remaining after the evaporation of step (c), (e) recovering the solvent separated in step (c) by condensation of the vapors produced in step (c), (f) treating at least a portion of the solvent recovered in step (e) with an isocyanate trimerisation catalyst in order to convert isocyanate impurities.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2004/024071 WO2006022641A1 (en) | 2004-07-28 | 2004-07-28 | Process for the production of polyisocyanates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN2012DN06523A true IN2012DN06523A (en) | 2015-10-09 |
Family
ID=35967753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN6523DEN2012 IN2012DN06523A (en) | 2004-07-28 | 2004-07-28 |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1773755B1 (en) |
| JP (1) | JP2008508269A (en) |
| KR (1) | KR101084850B1 (en) |
| CN (1) | CN100548971C (en) |
| BR (1) | BRPI0418975B1 (en) |
| CA (1) | CA2574024C (en) |
| ES (1) | ES2394493T3 (en) |
| IN (1) | IN2012DN06523A (en) |
| PT (1) | PT1773755E (en) |
| WO (1) | WO2006022641A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006298927B2 (en) | 2005-09-22 | 2011-07-07 | Huntsman International Llc | Method for the production of polyisocyanates |
| DE102006022448A1 (en) * | 2006-05-13 | 2007-11-15 | Bayer Materialscience Ag | Process for the preparation of isocyanates |
| EP2042485A1 (en) * | 2007-09-28 | 2009-04-01 | Huntsman International Llc | Process for fractionating a mixture of polyisocyanates |
| WO2014064128A1 (en) * | 2012-10-24 | 2014-05-01 | Basf Se | Method for producing isocyanates by phosgenating amines in liquid phase |
| CN105037672B (en) * | 2015-08-27 | 2017-08-25 | 厦门大学 | A kind of isocyanates capillary copolymer material and preparation method and application |
| KR102408416B1 (en) * | 2018-06-07 | 2022-06-14 | 우리화인켐 주식회사 | Method of preparing diisocyanate and optical lens |
| BR112021008046A2 (en) * | 2018-10-31 | 2021-08-03 | Dow Global Technologies Llc | method for removing organic monoisocyanates from an organic solvent, and, manufacturing process for polymeric mdi and/or mdi. |
| JP7443364B2 (en) * | 2018-12-07 | 2024-03-05 | ダウ グローバル テクノロジーズ エルエルシー | Method for converting monoisocyanates to urea |
| EP3921349A1 (en) | 2019-02-07 | 2021-12-15 | Dow Global Technologies LLC | Phenyl isocyanate conversion process |
| EP3750868A1 (en) * | 2019-06-11 | 2020-12-16 | Covestro Deutschland AG | Method for producing an amine-hydrochloride suspension |
| WO2022077429A1 (en) * | 2020-10-16 | 2022-04-21 | 万华化学集团股份有限公司 | Cyclic solvent in phosgenation reaction production and impurity removal method therefor |
| CN114380714B (en) * | 2020-10-16 | 2023-08-11 | 万华化学集团股份有限公司 | Circulating solvent in phosgenation production and impurity removing method thereof |
| WO2025065227A1 (en) * | 2023-09-26 | 2025-04-03 | 万华化学（宁波）有限公司 | Method for treating phenyl isocyanate byproduct and use thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1112243A (en) * | 1978-09-08 | 1981-11-10 | Manfred Bock | Process for the preparation of polyisocyanates containing isocyanurate groups and the use thereof |
| DE3129270A1 (en) * | 1981-07-24 | 1983-02-10 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING POLYISOCYANATES |
| CA2284472A1 (en) * | 1997-04-01 | 1998-10-08 | Els Kinnaes | Polyisocyanate based xerogels |
| JP2001516393A (en) * | 1997-04-01 | 2001-09-25 | ハンツマン・アイシーアイ・ケミカルズ・エルエルシー | Airgel based on polyisocyanate |
-
2004
- 2004-07-28 WO PCT/US2004/024071 patent/WO2006022641A1/en active Application Filing
- 2004-07-28 KR KR1020077002049A patent/KR101084850B1/en not_active Expired - Fee Related
- 2004-07-28 EP EP04757298A patent/EP1773755B1/en not_active Expired - Lifetime
- 2004-07-28 CA CA2574024A patent/CA2574024C/en not_active Expired - Fee Related
- 2004-07-28 PT PT04757298T patent/PT1773755E/en unknown
- 2004-07-28 ES ES04757298T patent/ES2394493T3/en not_active Expired - Lifetime
- 2004-07-28 JP JP2007523515A patent/JP2008508269A/en active Pending
- 2004-07-28 BR BRPI0418975-2A patent/BRPI0418975B1/en not_active IP Right Cessation
- 2004-07-28 CN CNB2004800437041A patent/CN100548971C/en not_active Expired - Fee Related
- 2004-07-28 IN IN6523DEN2012 patent/IN2012DN06523A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR101084850B1 (en) | 2011-11-21 |
| CN1993315A (en) | 2007-07-04 |
| WO2006022641A1 (en) | 2006-03-02 |
| ES2394493T3 (en) | 2013-02-01 |
| CN100548971C (en) | 2009-10-14 |
| EP1773755A4 (en) | 2010-04-14 |
| EP1773755A1 (en) | 2007-04-18 |
| BRPI0418975B1 (en) | 2015-07-28 |
| CA2574024A1 (en) | 2006-03-02 |
| KR20070038528A (en) | 2007-04-10 |
| CA2574024C (en) | 2012-06-26 |
| JP2008508269A (en) | 2008-03-21 |
| EP1773755B1 (en) | 2012-10-31 |
| PT1773755E (en) | 2012-11-15 |
| BRPI0418975A (en) | 2007-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4360878B2 (en) | Toluene diisocyanate purification and production process | |
| EP1371636B1 (en) | Process for the purification of mixtures of toluenediisocyanate | |
| EP3808732A1 (en) | Method for preparing aliphatic isocyanates | |
| IN2012DN06523A (en) | ||
| JP6149115B2 (en) | Process for the production of isocyanates by phosgenation of amines in the liquid phase | |
| KR930021675A (en) | Continuous multistage preparation of organic polyisocyanates | |
| AU2003294849A1 (en) | Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent | |
| KR20180022844A (en) | Methods for providing hydrogen chloride for chemical reactions | |
| JP2012532918A (en) | Process for producing light-colored isocyanates of diphenylmethane diisocyanates | |
| JP2012532909A (en) | Process for producing light-colored diphenylmethane isocyanates | |
| AU2003293872A1 (en) | Method for separating isocyanates out from a reaction mixture | |
| CN111630028B (en) | Process for preparing methylene diphenylene diisocyanate and polymethylene polyphenylene polyisocyanate | |
| JPH0232272B2 (en) | ||
| MX2023014999A (en) | Recovering di- and/or polyisocyanates from pu-depolymerisation processes. | |
| EP2691364B1 (en) | Method for producing isocyanates | |
| RU2008115525A (en) | METHOD FOR PRODUCING POLYISOCYANATES | |
| JP2009508904A5 (en) | ||
| US5646328A (en) | Process for removing by-products from diurethanes | |
| EP1721893B1 (en) | Method for producing isocyanate compound | |
| US3499021A (en) | Toluene diisocyanate process | |
| KR102839457B1 (en) | Method for preparing isocyanate compound | |
| KR102839458B1 (en) | Method for preparing isocyanate compound | |
| KR102839455B1 (en) | Method for preparing isocyanate compound | |
| KR102839456B1 (en) | Method for preparing isocyanate compound | |
| JP2019199422A (en) | Method for producing isocyanate |