GB1325286A - Process for the separation of an organic polyisocyanate mixture - Google Patents
Process for the separation of an organic polyisocyanate mixtureInfo
- Publication number
- GB1325286A GB1325286A GB504672A GB504672A GB1325286A GB 1325286 A GB1325286 A GB 1325286A GB 504672 A GB504672 A GB 504672A GB 504672 A GB504672 A GB 504672A GB 1325286 A GB1325286 A GB 1325286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fraction
- diphenylmethane diisocyanate
- isomers
- mixture
- diphenylmethane
- 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
- 229920001228 polyisocyanate Polymers 0.000 title abstract 6
- 239000005056 polyisocyanate Substances 0.000 title abstract 6
- 239000000203 mixture Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 238000000926 separation method Methods 0.000 title abstract 2
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 abstract 3
- 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 2
- 238000001640 fractional crystallisation Methods 0.000 abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000004508 fractional distillation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- 238000000526 short-path distillation Methods 0.000 abstract 1
- 239000000126 substance 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
-
- 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
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- 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
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2105193A DE2105193C3 (de) | 1971-02-04 | 1971-02-04 | Verfahren zur Trennung eines organischen Polyisocyanatgemisches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1325286A true GB1325286A (en) | 1973-08-01 |
Family
ID=5797784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB504672A Expired GB1325286A (en) | 1971-02-04 | 1972-02-03 | Process for the separation of an organic polyisocyanate mixture |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE778942A (enrdf_load_stackoverflow) |
| DD (1) | DD106366A1 (enrdf_load_stackoverflow) |
| DE (1) | DE2105193C3 (enrdf_load_stackoverflow) |
| GB (1) | GB1325286A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1417087A (en) * | 1973-05-29 | 1975-12-10 | Ici Ltd | Polyisocyanates |
| DE2711958B2 (de) * | 1977-03-18 | 1981-08-13 | Bayer Ag, 5090 Leverkusen | Binde- oder Imprägnierungsmittel für lignocellulosehaltige Materialien |
| DE19739191A1 (de) * | 1997-09-08 | 1999-03-11 | Henkel Kgaa | Verwendung Schaum-freier Zusammensetzungen mit einem Gehalt an Polyurethanen zur Herstellung von Gießharzen und Beschichtungsmassen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3217024A (en) * | 1963-03-22 | 1965-11-09 | Allied Chem | Conversion of mixtures of 2, 4-and 2, 6-toluene diisocyanates to other mixtures of different isomer ratio |
| BE755243Q (fr) * | 1965-07-08 | 1971-02-01 | Upjohn Co | Procedes de fabrication d'isocyanates et de polyisocyanates |
| DE1923214B2 (de) * | 1969-05-07 | 1973-08-02 | Verfahren zur gleichzeitigen herstellung von reinem 4,4'-diphenylmethandiisocyanat und einem polyphenyl-polymethylen-polyisocyanatgemisch, polyphenylpolymethylen-polyisocyanate und deren verwendung zur herstellung von polyurethanlacken |
-
1971
- 1971-02-04 DE DE2105193A patent/DE2105193C3/de not_active Expired
-
1972
- 1972-02-03 GB GB504672A patent/GB1325286A/en not_active Expired
- 1972-02-03 BE BE778942A patent/BE778942A/xx not_active IP Right Cessation
- 1972-02-04 DD DD160948A patent/DD106366A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE778942A (fr) | 1972-05-30 |
| DD106366A1 (enrdf_load_stackoverflow) | 1974-06-12 |
| DE2105193A1 (enrdf_load_stackoverflow) | 1972-08-10 |
| DE2105193C3 (de) | 1981-07-09 |
| DE2105193B2 (de) | 1980-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4570029A (en) | Process for separating isoprene | |
| GB1263439A (en) | A process for the production of isocyanates | |
| ES394622A2 (es) | Un procedimiento para separar, al menos, un isomero aroma- tico c8 de un material de alimentacion que contiene mezclas de isomeros aromaticos c8. | |
| GB1452610A (en) | Process for solvent deashing of hydrofined coal solution | |
| GB1325286A (en) | Process for the separation of an organic polyisocyanate mixture | |
| GB1193401A (en) | Liquid diphenylmethane diisocyanate compositions | |
| GB1417087A (en) | Polyisocyanates | |
| GB1398975A (en) | Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates | |
| US2188772A (en) | Method of distilling mixtures containing vinyl aromatic hydrocarbons | |
| USRE22379E (en) | Recovery of pure aromatics | |
| US2775627A (en) | Jnjznjs | |
| US2496253A (en) | Production of xylenes | |
| GB1423993A (en) | Process for the crystallisation of diphenylmethane diisocyanate from a crude undistilled polyisocyanate mixture | |
| GB572897A (en) | Improvements in or relating to the treatment by distillation of complex mixtures | |
| GB894133A (en) | Multistage xylene separation process | |
| GB1271992A (en) | Refining of isocyanates | |
| US2676903A (en) | Fractional liquid extraction of vitamins | |
| US3562344A (en) | Paraxylene recovery | |
| ES444215A3 (es) | Procedimiento para la preparacion simultanea de un diisocia-nato de 4,4-difenilmetano puro y de una mezcla de folifenil-polimetileno-poliisocianato. | |
| GB1239288A (enrdf_load_stackoverflow) | ||
| IE36118B1 (en) | Method for separating hydrocarbons especially aromatic hydrocarbons | |
| GB1040417A (en) | Recovery of organic isocyanates from crude reaction mixtures | |
| Fischbach et al. | The separation of penicillins by partition chromatography | |
| US3541164A (en) | Fractionation of monochloroparaffins | |
| US3089829A (en) | Separation of m-xylene and p-xylene by distillation in the presence of benzyl alcohol |
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) | ||
| SP | Amendment (slips) printed | ||
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Free format text: INSERT JOURNAL 5039, PAGE 2390 |