| Record no |
201103027638 |
| Activity status |
Active |
| Working Title |
PROCESS FOR THE PREPARATION OF HIGH QUALITY 3,3,4,4-TETRAMINOBIPHENYL |
| Working Inventors |
MANER ASIF;BAVIKAR SUDHIR;SUDALAI ARUMUGAM;SIVARAM SWAMINATHAN; |
| Contributing institutions |
NCL |
| Administered by |
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| Ownership |
|
| Categories > Subjects |
Polymer sciences and engineering |
| Categories > Portfolio |
Petrochemicals/industrial chemicals |
| Disclosure number |
2003-INV-0068 |
| NCL No |
2003-NCL-0068 |
| CSIR No |
2003-NF-0514
|
| Priority date |
12-29-2003 |
| Country |
US |
| Application number |
804886 |
| Provisional filing date |
|
| Complete filing date |
03-19-2004 |
| Publication status |
Yes |
| Publication date |
|
| Publication no |
|
| Granted number |
6835854 |
| Granted date |
12-28-2004 |
| Final title |
PROCESS FOR THE PREPARATION OF HIGH QUALITY 3,3*,4,4*-TETRAMINOBIPHENYL |
| Final Inventors |
MANER ASIF;BAVIKAR SUDHIR;SUDALAI ARUMUGAM;SIVARAM SWAMINATHAN; |
| Abstract |
The present invention relates to a process for the preparation of pure high quality 3 3 4 4 tetraminobiphenyl TAB in high yields. The present invention also discloses a process for the preparation of 3 3 4 4 tetraminobiphenyl TAB comprising a three step process 1 oxidation 3 3 dichloro 4 4 diaminobiphenyl DCB with 50 aq. H2O2 2 ammonolysis of the resulting 3 3 dinitro 4 4 dinitrobiphenyl DCDNB and 3 reduction of 3 3 diamino 4 4 dinitrobiphenyl DADNB with stannous chloride and concentrated hydrochloric acid. |
| Case status |
Granted + Inforce |
| Licensing status |
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| Licensing case no |
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| Client name |
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| Lead inventors |
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| Categories > Industry > Primary |
Petrochemicals |
| Categories > Industry > other |
|