GB1263439A - A process for the production of isocyanates - Google Patents
A process for the production of isocyanatesInfo
- Publication number
- GB1263439A GB1263439A GB2103570A GB2103570A GB1263439A GB 1263439 A GB1263439 A GB 1263439A GB 2103570 A GB2103570 A GB 2103570A GB 2103570 A GB2103570 A GB 2103570A GB 1263439 A GB1263439 A GB 1263439A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fraction
- mdi
- ratio
- isocyanatophenylmethyl
- polymethylene
- 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
- 238000000034 method Methods 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000012948 isocyanate Substances 0.000 title 1
- 150000002513 isocyanates Chemical class 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 5
- 229920001228 polyisocyanate Polymers 0.000 abstract 4
- 239000005056 polyisocyanate Substances 0.000 abstract 4
- 210000002196 fr. b Anatomy 0.000 abstract 2
- 210000003918 fraction a Anatomy 0.000 abstract 2
- 210000000540 fraction c Anatomy 0.000 abstract 2
- 238000004508 fractional distillation Methods 0.000 abstract 2
- PTSIWTZNEIAHHQ-UHFFFAOYSA-N 1-isocyanato-2,4-bis[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C(CC=2C=CC(=CC=2)N=C=O)=C1 PTSIWTZNEIAHHQ-UHFFFAOYSA-N 0.000 abstract 1
- MKMCUJYADFANNV-UHFFFAOYSA-N 1-isocyanato-2-[(2-isocyanatophenyl)methyl]-4-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C(CC=2C(=CC=CC=2)N=C=O)=C1 MKMCUJYADFANNV-UHFFFAOYSA-N 0.000 abstract 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 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 239000004305 biphenyl Substances 0.000 abstract 1
- 235000010290 biphenyl Nutrition 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 125000005442 diisocyanate group Chemical group 0.000 abstract 1
- DYDNPESBYVVLBO-UHFFFAOYSA-N formanilide Chemical compound O=CNC1=CC=CC=C1 DYDNPESBYVVLBO-UHFFFAOYSA-N 0.000 abstract 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 abstract 1
- 238000006116 polymerization reaction 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
- C08G18/06—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
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
1,263,439. Polyphenyl-polymethylene-polyisocyanates. FARBENFABRIKEN BAYERA.G. 1 May, 1970 [7 May, 1969], No. 21035/70. Heading C2C. The invention comprises (1) a poly-/diisocyanate composition, I, in which the ratio between the concentrations of 2,4<SP>1</SP>-diphenylmethane diisocyanate (2,4<SP>1</SP>-MDI) and 4,4<SP>1</SP>-MDI is a, the ratio between the concentrations of 1-(4-isocyanatophenylmethyl) - 3 - (2 - isocyanatophenylmethyl)-4-isocyanatobenzene and 1,3- di - (4 - isocyanatophenylmethyl) - 4 - isocyanato benzene is b and the ratio a : b is greater than 1À3, (2) a process for the production both of pure 4,4<SP>1</SP>- MDI and a polyphenyl-polymethylene-polyisocyanate mixture which comprises separating the polyisocyanate mixture, obtained by phosgenation of an aniline-formaldehyde condensation mixture, by fractional distillation into a fraction A which consists mainly of isomeric MDI and a fraction B which, in addition to isomeric diphenyl diisocyanates consists of polyisocyanates containing more than two aromatic nuclei, and in which fraction A is then separated by fractional distillation into a fraction C consisting of 2,2<SP>1</SP>-, 2,41- and 4,4<SP>1</SP>-MDI, a fraction D consisting of at least 98 weight per cent pure 4,4<SP>1</SP>-MDI and a residue E formed as a result of high temperature polymerization. The composition, I, may be formed by the above process and is the fraction B either alone or to which has been added fraction C to adjust the ratio a : b to the correct value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691923214 DE1923214B2 (en) | 1969-05-07 | 1969-05-07 | PROCESS FOR THE SIMULTANEOUS PREPARATION OF PURE 4,4'-DIPHENYLMETHANE DIISOCYANATE AND A POLYPHENYL-POLYMETHYLENE-POLYISOCYANATE MIXTURE, POLYPHENYL-POLYMETHYLENE-POLYISOCYANATE, AND THE USE OF POLYPHENYL-POLYMETHYLENE-POLYISOCYANATE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1263439A true GB1263439A (en) | 1972-02-09 |
Family
ID=5733446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2103570A Expired GB1263439A (en) | 1969-05-07 | 1970-05-01 | A process for the production of isocyanates |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4948313B1 (en) |
| BE (1) | BE750080A (en) |
| DE (1) | DE1923214B2 (en) |
| FR (1) | FR2047415A5 (en) |
| GB (1) | GB1263439A (en) |
| NL (1) | NL7006542A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49134660A (en) * | 1973-02-20 | 1974-12-25 | ||
| US4118410A (en) | 1971-02-04 | 1978-10-03 | Gottfried Reuter Gmbh I.L. | Polyphenyl-polymethylene-polyisocyanate mixtures |
| US4414074A (en) | 1981-11-12 | 1983-11-08 | Bayer Aktiengesellschaft | Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations |
| EP1518874A1 (en) * | 2003-09-24 | 2005-03-30 | Basf Aktiengesellschaft | Polymeric MDI having low monomer content |
| CN100434417C (en) * | 2004-02-04 | 2008-11-19 | 拜尔材料科学股份公司 | Process for the production of very pure 2,4'-methylene diphenyl diisocyanate |
| US9481776B2 (en) | 2010-12-15 | 2016-11-01 | Covestro Deutschland Ag | Foams of high thermal stability |
| US9593075B2 (en) | 2012-03-19 | 2017-03-14 | Covestro Deutschland Ag | Method for producing isocyanates |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2105193C3 (en) * | 1971-02-04 | 1981-07-09 | Chemie-Anlagenbau Bischofsheim GmbH, 4500 Osnabrück | Process for the separation of an organic polyisocyanate mixture |
| JPS5262937A (en) * | 1975-11-19 | 1977-05-24 | Nishikawa Gomu Kougiyou Kk | Method of waterrproof gutter construction of concrete joint and waterrproof gutter |
| DE2623401C3 (en) * | 1976-05-25 | 1981-07-16 | Bayer Ag, 5090 Leverkusen | Process for the solvent-free production of solid plastic molded parts |
| DE102005055189A1 (en) * | 2005-11-19 | 2007-05-24 | Bayer Materialscience Ag | Process for the preparation of 4,4'-diphenylmethane diisocyanate |
| US8907124B2 (en) | 2010-11-17 | 2014-12-09 | Basf Se | Process for preparing methylenedi(phenyl isocyanate) |
| BR112013012255A2 (en) | 2010-11-17 | 2016-08-09 | Basf Se | process for preparing methylene diphenyl diisocyanate |
| EP2640696B1 (en) | 2010-11-17 | 2016-08-10 | Basf Se | Process for purifying mixtures comprising 4,4'-methylene diphenyl diisocyanate |
| US9505711B2 (en) | 2010-11-17 | 2016-11-29 | Basf Se | Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate |
| BR112013012096A2 (en) | 2010-11-17 | 2016-08-16 | Basf Se | method for the purification of mixtures |
| CN103619927A (en) | 2011-05-02 | 2014-03-05 | 拜耳知识产权有限责任公司 | High-temperature-resistant foams having low thermal conductivity |
| CN116547267A (en) | 2020-11-23 | 2023-08-04 | 巴斯夫欧洲公司 | Process for preparing isocyanates |
| CN115354505B (en) * | 2022-08-22 | 2024-03-08 | 浙江理工大学绍兴柯桥研究院有限公司 | Bio-based solvent-free polyurethane surface layer resin for synthetic leather and preparation method thereof |
-
1969
- 1969-05-07 DE DE19691923214 patent/DE1923214B2/en not_active Ceased
-
1970
- 1970-05-01 GB GB2103570A patent/GB1263439A/en not_active Expired
- 1970-05-04 JP JP45037577A patent/JPS4948313B1/ja active Pending
- 1970-05-04 NL NL7006542A patent/NL7006542A/xx not_active Application Discontinuation
- 1970-05-06 BE BE750080D patent/BE750080A/en unknown
- 1970-05-06 FR FR7016630A patent/FR2047415A5/fr not_active Expired
Cited By (9)
| 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 |
| JPS49134660A (en) * | 1973-02-20 | 1974-12-25 | ||
| US4414074A (en) | 1981-11-12 | 1983-11-08 | Bayer Aktiengesellschaft | Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations |
| EP1518874A1 (en) * | 2003-09-24 | 2005-03-30 | Basf Aktiengesellschaft | Polymeric MDI having low monomer content |
| CN100434417C (en) * | 2004-02-04 | 2008-11-19 | 拜尔材料科学股份公司 | Process for the production of very pure 2,4'-methylene diphenyl diisocyanate |
| US7495124B2 (en) | 2004-02-04 | 2009-02-24 | Bayer Materialscience Ag | Process for the production of very pure 2,4′-methylenediphenyl diisocyanate |
| US9481776B2 (en) | 2010-12-15 | 2016-11-01 | Covestro Deutschland Ag | Foams of high thermal stability |
| US9593075B2 (en) | 2012-03-19 | 2017-03-14 | Covestro Deutschland Ag | Method for producing isocyanates |
| US9695115B2 (en) | 2012-03-19 | 2017-07-04 | Covestro Deutschland Ag | Method for producing isocyanates |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1923214A1 (en) | 1970-11-19 |
| NL7006542A (en) | 1970-11-10 |
| JPS4948313B1 (en) | 1974-12-20 |
| FR2047415A5 (en) | 1971-03-12 |
| DE1923214B2 (en) | 1973-08-02 |
| BE750080A (en) | 1970-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1263439A (en) | A process for the production of isocyanates | |
| US4490300A (en) | Liquid diphenylmethane diisocyanate compositions | |
| US4490301A (en) | Liquid diphenylmethane diisocyanate compositions | |
| DE1092007B (en) | Process for the preparation of polyisocyanates containing a carbodiimide isocyanate adduct | |
| DE1593664C3 (en) | Process for converting methylenebis (phenyl isocyanate) normally solid at 15 degrees C into a liquid isocyanate which is stable at 15 degrees C and above and isocyanate obtained in the process | |
| DE1793785A1 (en) | 4,4'-METHYLENE-BIS (CYCLOHEXYLISOCYANATE) -ISOMER MIXTURE | |
| EP1073628A1 (en) | Method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine colour index | |
| DE1593665B2 (en) | PROCESS FOR THE CONVERSION OF METHYLENE BIS (PHENYL ISOCYANATE), NORMALLY SOLID AT 15 DEG C, INTO STORAGE LIQUID ISOCYANATE AND ISOCYANATE CONTAINED AT 15 DEGREES C AND ABOVE | |
| DE1932832C3 (en) | 2,4-bis (4-aminocyclohexylmethyl) cyclohexylamine, 2,4-bis (4-isocyanatocyclohexylmethylcyclohexyl isocyanate and its use for the production of polyurethanes | |
| AU532047B2 (en) | Modified isocyanate | |
| CA2128344A1 (en) | Liquid methylene diphenyl diisocyanate | |
| US3715381A (en) | Polyisocyanate compositions stabilized against discoloration | |
| DE1618795A1 (en) | Liquid mixtures of 4,4'-methylene bis (cyclohexyl isocyanate) isomers | |
| EP1820796A1 (en) | Process for the preparation of fluid and storage stable organic isocyanates containing carbodiimide and/or uretonimino groups | |
| US4294666A (en) | Process for the manufacture of 4,4'-diphenyl-methane diisocyanate and a mixture of diphenyl-methane diisocyanate isomers containing a small amount of uretdiones and hydrolyzable chlorine | |
| US4414074A (en) | Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations | |
| US3694323A (en) | Separation of distillable isocyanates from their phosgenation masses | |
| GB1417087A (en) | Polyisocyanates | |
| GB1193401A (en) | Liquid diphenylmethane diisocyanate compositions | |
| WO2007076998A1 (en) | Method for producing liquid, storage-stable organic isocyanates comprising carbodiimide and/or uretonimine groups | |
| GB1398975A (en) | Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates | |
| GB1346402A (en) | Polyisocyanates and their use in the production of polyurethane plastics | |
| GB1287192A (en) | Manufacture of 4,4<1>-diphenylmethane diisocyanate and a mixture of methylene-bridged di(phenylisocyanates) and poly(phenylisocyanates) | |
| GB1423993A (en) | Process for the crystallisation of diphenylmethane diisocyanate from a crude undistilled polyisocyanate mixture | |
| WO2007076999A1 (en) | Method for producing liquid, storage-stable organic isocyanates comprising carbodiimide and/or uretonimine groups |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 414F | Notice of opposition given (sect. 14/1949) | ||
| 414A | Case decided by the comptroller ** specification amended (sect. 14/1949) | ||
| 49R | Reference inserted (sect. 9/1949) | ||
| SPA | Amended specification published | ||
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |