GB561846A - Manufacture of secondary diamines - Google Patents
Manufacture of secondary diaminesInfo
- Publication number
- GB561846A GB561846A GB1538442A GB1538442A GB561846A GB 561846 A GB561846 A GB 561846A GB 1538442 A GB1538442 A GB 1538442A GB 1538442 A GB1538442 A GB 1538442A GB 561846 A GB561846 A GB 561846A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzene
- bis
- prepared
- diamines
- diarylidene
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Disecondary diamines are prepared by forming quaternary salts by alkylating diarylidene derivatives of primary diamines, preferably with a dialkyl sulphate or an alkyl ester of p-toluene sulphonic acid and subsequently hydrolysing these salts. The diamines include ethylene-, trimethylene-, tetramethylene-, hexamethylene-, decamethylene-, and triglycol-diamine, p - bis - (b - aminomethyl)benzene and p-bis-(b -aminoethyl)benzene, which are converted to the diarylidene derivatives by admixture with an aldehyde, e.g., benzaldehyde. In examples dibenzal-hexamethylenediamine is alkylated by methyl-p-toluene sulphonate in presence of ethyl acetate and the quaternary salt is hydrolysed by water to N : N1 - dimethylhexamethylenediamine, and p-bis-(b -methyl-amino-ethyl)-benzene is prepared from p-bis-(b -benzalaminoethyl)-benzene which is itself prepared from p-bis(b -aminoethyl)-benzene and benzaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1538442A GB561846A (en) | 1942-12-02 | 1942-12-02 | Manufacture of secondary diamines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1538442A GB561846A (en) | 1942-12-02 | 1942-12-02 | Manufacture of secondary diamines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB561846A true GB561846A (en) | 1944-06-07 |
Family
ID=10058202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1538442A Expired GB561846A (en) | 1942-12-02 | 1942-12-02 | Manufacture of secondary diamines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB561846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE953169C (en) * | 1952-07-20 | 1956-11-29 | Hoechst Ag | Process for the preparation of monomethylated aromatic amines |
-
1942
- 1942-12-02 GB GB1538442A patent/GB561846A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE953169C (en) * | 1952-07-20 | 1956-11-29 | Hoechst Ag | Process for the preparation of monomethylated aromatic amines |
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