GB1288937A - - Google Patents
Info
- Publication number
- GB1288937A GB1288937A GB1288937DA GB1288937A GB 1288937 A GB1288937 A GB 1288937A GB 1288937D A GB1288937D A GB 1288937DA GB 1288937 A GB1288937 A GB 1288937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methylene bridged
- polyaryl amines
- polyaryl
- amines
- triehloroacetic
- 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
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 150000001412 amines Chemical class 0.000 abstract 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 150000004982 aromatic amines Chemical class 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- YPJUNDFVDDCYIH-UHFFFAOYSA-N perfluorobutyric acid Chemical class OC(=O)C(F)(F)C(F)(F)C(F)(F)F YPJUNDFVDDCYIH-UHFFFAOYSA-N 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1288937 Methylene bridged polyaryl amines IMPERIAL CHEMICAL INDUSTRIES Ltd 5 May 1970 [9 June 1969] 29092/69 Heading C2C Methylene bridged polyaryl amines are prepared by condensing a primary arylamine and formaldehyde at elevated temperature in the presence of a strong organic carboxylic acid of pKa value less than 1À5 such as oxalic, trifluoroacetic, triehloroacetic, dichloroacetic, difluoroacetic and heptafluorbutyric acids. A neutral metallic salt, e.g. a halide of an alkali or alkaline earth metal may also be present and the reactants may be heated at a pressure above atmospheric and the process carried out in a continuous manner. Reference has been directed by the Comptroller to Specification 1,177,557
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2909269 | 1969-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1288937A true GB1288937A (en) | 1972-09-13 |
Family
ID=10286015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1288937D Expired GB1288937A (en) | 1969-06-09 | 1969-06-09 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2027057A1 (en) |
| GB (1) | GB1288937A (en) |
| NL (1) | NL7008365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031136A (en) * | 1993-07-21 | 2000-02-29 | Bayer Corporation | Process for preparing methylene diphenylamines by partial neutralization of acidic methylene diphenylamines |
| CN117185936A (en) * | 2023-09-15 | 2023-12-08 | 万华化学集团股份有限公司 | Preparation method of diphenylmethane series diamines and polyamines |
-
1969
- 1969-06-09 GB GB1288937D patent/GB1288937A/en not_active Expired
-
1970
- 1970-06-02 DE DE19702027057 patent/DE2027057A1/en active Pending
- 1970-06-09 NL NL7008365A patent/NL7008365A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031136A (en) * | 1993-07-21 | 2000-02-29 | Bayer Corporation | Process for preparing methylene diphenylamines by partial neutralization of acidic methylene diphenylamines |
| CN117185936A (en) * | 2023-09-15 | 2023-12-08 | 万华化学集团股份有限公司 | Preparation method of diphenylmethane series diamines and polyamines |
| CN117185936B (en) * | 2023-09-15 | 2025-11-04 | 万华化学集团股份有限公司 | Preparation methods of diphenylmethane series diamines and polyamines |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2027057A1 (en) | 1970-12-17 |
| NL7008365A (en) | 1970-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES354400A1 (en) | Process for preparing caprolactam and its alkyl substituted derivatives | |
| JPS51125307A (en) | Process for preparation of hexafluoropropene oligomers | |
| GB1041695A (en) | Process for the preparation of aromatic carboxylic acids | |
| GB1288937A (en) | ||
| GB1326473A (en) | Process for purifying alpha-l-aspartyl-l-phenylalanine methyl ester and intermediates in said process | |
| CA969125A (en) | Distillation process for recovering substantially anhydrous formic acid from aqueous solutions | |
| GB1481763A (en) | Process for the production of fibrous potassium titanate | |
| GB1473379A (en) | Process for the manufacture of maleimides | |
| GB1229695A (en) | ||
| GB1427902A (en) | Process for the preparation of 1,3-dichloro-butene-2 | |
| GB1497217A (en) | Process for the preparation of cyanuric acid | |
| GB1234145A (en) | Manufacture of methylene bridged polyarylamines | |
| GB1220781A (en) | Process for the production of nitriles | |
| GB1229236A (en) | ||
| GB1338834A (en) | Substituted furancarboxylic acid cycloalkylamide | |
| GB1202189A (en) | Process for the preparation of 4-aminomethylcyclohexane-1-carboxylic acid | |
| GB1199547A (en) | Process for the Preparation of alpha-Ketoglutaric Acid. | |
| GB1263677A (en) | Process for the preparation of quinoxaline-di-n-oxide-aldehyde | |
| GB1298480A (en) | Process for the production of diaminodiphenyl methanes | |
| GB1428760A (en) | Process for the manufacture of 2-aryl-vic-triazoles | |
| GB1450168A (en) | Metal corrosion inhibitors for aqueous mineral acid solutions comprising acetylene/butyraldehyde reaction products | |
| GB1234144A (en) | ||
| GB1114021A (en) | Process for the production of brightening agents of the bis-triazinyl-amino-stilbene series | |
| GB1449314A (en) | Production of piperitenone | |
| SU459958A1 (en) | Method of obtaining n-phenyl-2-naphthylamine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |