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Improved Process For Preparing 4 Aminodiphenylamine
Abstract: A process for preparing 4 aminodiphenylamine (4 ADPA) comprising steps of coupling of aniline with nitrobenzene in presence of a suitable base e.g. tetramethylammonium hydroxide (TMAH) hydrogenation of the coupling mass phase separation hydrogenation of azobenzene in the separated organic mass and fractional distillation for 4 ADPA recovery. An improvement in 4 ADPA recovery and a lowering of tar formation are obtained due to azobenzene reduction prior to 4 ADPA isolation. Also a gain in volume productivity of 4 ADPA is obtained by suitably altering the batch cycle time of the coupling reaction.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
29 July 2014
Publication Number
43/2015
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2022-02-15
Renewal Date
Applicants
NOCIL LIMITED
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
Inventors
1. NANDI Chinmoy
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
2. GANGAL Narendra
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
3. PUROHIT Pramod
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
4. KETKAR Vinay
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
5. KASHELIKAR Dilip
Mafatlal House H.T. Parekh Marg
Backbay Reclamation Churchgate
Mumbai 400 020
Specification
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1593-KOLNP-2014-IntimationOfGrant15-02-2022.pdf | 2022-02-15 |
| 1 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-1.pdf | 2024-11-23 |
| 1 | 1593-KOLNP-2014-Response to office action [17-12-2024(online)].pdf | 2024-12-17 |
| 1 | FORM 5.pdf | 2014-08-01 |
| 2 | 1593-KOLNP-2014-FORM-26 [28-11-2024(online)].pdf | 2024-11-28 |
| 2 | 1593-KOLNP-2014-PatentCertificate15-02-2022.pdf | 2022-02-15 |
| 2 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-2.pdf | 2024-11-23 |
| 2 | FORM 3.pdf | 2014-08-01 |
| 3 | 1593-KOLNP-2014-FORM-26 [25-01-2022(online)].pdf | 2022-01-25 |
| 3 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-1.pdf | 2024-11-23 |
| 3 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)].pdf | 2024-11-23 |
| 3 | FORM 2 & Complete Specification.pdf | 2014-08-01 |
| 4 | 1593-KOLNP-2014-IntimationOfGrant15-02-2022.pdf | 2022-02-15 |
| 4 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-2.pdf | 2024-11-23 |
| 4 | 1593-KOLNP-2014-Written submissions and relevant documents [25-01-2022(online)].pdf | 2022-01-25 |
| 4 | 1593-KOLNP-2014.pdf | 2014-08-23 |
| 5 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)].pdf | 2024-11-23 |
| 5 | 1593-KOLNP-2014-PatentCertificate15-02-2022.pdf | 2022-02-15 |
| 5 | 1593-KOLNP-2014-Correspondence to notify the Controller [08-01-2022(online)].pdf | 2022-01-08 |
| 5 | 1593-KOLNP-2014-(13-10-2014)-CORRESPONDENCE.pdf | 2014-10-13 |
| 6 | 1593-KOLNP-2014-US(14)-HearingNotice-(HearingDate-11-01-2022).pdf | 2021-12-15 |
| 6 | 1593-KOLNP-2014-IntimationOfGrant15-02-2022.pdf | 2022-02-15 |
| 6 | 1593-KOLNP-2014-FORM-26 [25-01-2022(online)].pdf | 2022-01-25 |
| 6 | 1593-KOLNP-2014-(13-10-2014)-ANNEXURE TO FORM 3.pdf | 2014-10-13 |
| 7 | 1593-KOLNP-2014-FER.pdf | 2018-05-09 |
| 7 | 1593-KOLNP-2014-FORM 3 [26-11-2020(online)].pdf | 2020-11-26 |
| 7 | 1593-KOLNP-2014-PatentCertificate15-02-2022.pdf | 2022-02-15 |
| 7 | 1593-KOLNP-2014-Written submissions and relevant documents [25-01-2022(online)].pdf | 2022-01-25 |
| 8 | 1593-KOLNP-2014-Correspondence to notify the Controller [08-01-2022(online)].pdf | 2022-01-08 |
| 8 | 1593-KOLNP-2014-FORM 3 [10-10-2020(online)].pdf | 2020-10-10 |
| 8 | 1593-KOLNP-2014-FORM 3 [22-08-2018(online)].pdf | 2018-08-22 |
| 8 | 1593-KOLNP-2014-FORM-26 [25-01-2022(online)].pdf | 2022-01-25 |
| 9 | 1593-KOLNP-2014-FORM 3 [19-11-2019(online)].pdf | 2019-11-19 |
| 9 | 1593-KOLNP-2014-OTHERS [05-11-2018(online)].pdf | 2018-11-05 |
| 9 | 1593-KOLNP-2014-US(14)-HearingNotice-(HearingDate-11-01-2022).pdf | 2021-12-15 |
| 9 | 1593-KOLNP-2014-Written submissions and relevant documents [25-01-2022(online)].pdf | 2022-01-25 |
| 10 | 1593-KOLNP-2014-Correspondence to notify the Controller [08-01-2022(online)].pdf | 2022-01-08 |
| 10 | 1593-KOLNP-2014-FER_SER_REPLY [05-11-2018(online)].pdf | 2018-11-05 |
| 10 | 1593-KOLNP-2014-FORM 3 [07-09-2019(online)].pdf | 2019-09-07 |
| 10 | 1593-KOLNP-2014-FORM 3 [26-11-2020(online)].pdf | 2020-11-26 |
| 11 | 1593-KOLNP-2014-CLAIMS [05-11-2018(online)].pdf | 2018-11-05 |
| 11 | 1593-KOLNP-2014-FORM 3 [10-10-2020(online)].pdf | 2020-10-10 |
| 11 | 1593-KOLNP-2014-FORM 3 [23-04-2019(online)].pdf | 2019-04-23 |
| 11 | 1593-KOLNP-2014-US(14)-HearingNotice-(HearingDate-11-01-2022).pdf | 2021-12-15 |
| 12 | 1593-KOLNP-2014-CLAIMS [05-11-2018(online)].pdf | 2018-11-05 |
| 12 | 1593-KOLNP-2014-FORM 3 [19-11-2019(online)].pdf | 2019-11-19 |
| 12 | 1593-KOLNP-2014-FORM 3 [23-04-2019(online)].pdf | 2019-04-23 |
| 12 | 1593-KOLNP-2014-FORM 3 [26-11-2020(online)].pdf | 2020-11-26 |
| 13 | 1593-KOLNP-2014-FORM 3 [10-10-2020(online)].pdf | 2020-10-10 |
| 13 | 1593-KOLNP-2014-FORM 3 [07-09-2019(online)].pdf | 2019-09-07 |
| 13 | 1593-KOLNP-2014-FER_SER_REPLY [05-11-2018(online)].pdf | 2018-11-05 |
| 14 | 1593-KOLNP-2014-FORM 3 [19-11-2019(online)].pdf | 2019-11-19 |
| 14 | 1593-KOLNP-2014-FORM 3 [23-04-2019(online)].pdf | 2019-04-23 |
| 14 | 1593-KOLNP-2014-OTHERS [05-11-2018(online)].pdf | 2018-11-05 |
| 15 | 1593-KOLNP-2014-CLAIMS [05-11-2018(online)].pdf | 2018-11-05 |
| 15 | 1593-KOLNP-2014-FORM 3 [07-09-2019(online)].pdf | 2019-09-07 |
| 15 | 1593-KOLNP-2014-FORM 3 [10-10-2020(online)].pdf | 2020-10-10 |
| 15 | 1593-KOLNP-2014-FORM 3 [22-08-2018(online)].pdf | 2018-08-22 |
| 16 | 1593-KOLNP-2014-FER.pdf | 2018-05-09 |
| 16 | 1593-KOLNP-2014-FER_SER_REPLY [05-11-2018(online)].pdf | 2018-11-05 |
| 16 | 1593-KOLNP-2014-FORM 3 [23-04-2019(online)].pdf | 2019-04-23 |
| 16 | 1593-KOLNP-2014-FORM 3 [26-11-2020(online)].pdf | 2020-11-26 |
| 17 | 1593-KOLNP-2014-OTHERS [05-11-2018(online)].pdf | 2018-11-05 |
| 17 | 1593-KOLNP-2014-US(14)-HearingNotice-(HearingDate-11-01-2022).pdf | 2021-12-15 |
| 17 | 1593-KOLNP-2014-(13-10-2014)-ANNEXURE TO FORM 3.pdf | 2014-10-13 |
| 17 | 1593-KOLNP-2014-CLAIMS [05-11-2018(online)].pdf | 2018-11-05 |
| 18 | 1593-KOLNP-2014-FER_SER_REPLY [05-11-2018(online)].pdf | 2018-11-05 |
| 18 | 1593-KOLNP-2014-FORM 3 [22-08-2018(online)].pdf | 2018-08-22 |
| 18 | 1593-KOLNP-2014-Correspondence to notify the Controller [08-01-2022(online)].pdf | 2022-01-08 |
| 18 | 1593-KOLNP-2014-(13-10-2014)-CORRESPONDENCE.pdf | 2014-10-13 |
| 19 | 1593-KOLNP-2014-FER.pdf | 2018-05-09 |
| 19 | 1593-KOLNP-2014-OTHERS [05-11-2018(online)].pdf | 2018-11-05 |
| 19 | 1593-KOLNP-2014-Written submissions and relevant documents [25-01-2022(online)].pdf | 2022-01-25 |
| 19 | 1593-KOLNP-2014.pdf | 2014-08-23 |
| 20 | FORM 2 & Complete Specification.pdf | 2014-08-01 |
| 20 | 1593-KOLNP-2014-FORM-26 [25-01-2022(online)].pdf | 2022-01-25 |
| 20 | 1593-KOLNP-2014-FORM 3 [22-08-2018(online)].pdf | 2018-08-22 |
| 20 | 1593-KOLNP-2014-(13-10-2014)-ANNEXURE TO FORM 3.pdf | 2014-10-13 |
| 21 | 1593-KOLNP-2014-(13-10-2014)-CORRESPONDENCE.pdf | 2014-10-13 |
| 21 | 1593-KOLNP-2014-FER.pdf | 2018-05-09 |
| 21 | 1593-KOLNP-2014-PatentCertificate15-02-2022.pdf | 2022-02-15 |
| 21 | FORM 3.pdf | 2014-08-01 |
| 22 | 1593-KOLNP-2014-(13-10-2014)-ANNEXURE TO FORM 3.pdf | 2014-10-13 |
| 22 | 1593-KOLNP-2014-IntimationOfGrant15-02-2022.pdf | 2022-02-15 |
| 22 | 1593-KOLNP-2014.pdf | 2014-08-23 |
| 22 | FORM 5.pdf | 2014-08-01 |
| 23 | 1593-KOLNP-2014-(13-10-2014)-CORRESPONDENCE.pdf | 2014-10-13 |
| 23 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)].pdf | 2024-11-23 |
| 23 | FORM 2 & Complete Specification.pdf | 2014-08-01 |
| 24 | FORM 3.pdf | 2014-08-01 |
| 24 | 1593-KOLNP-2014.pdf | 2014-08-23 |
| 24 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-2.pdf | 2024-11-23 |
| 25 | 1593-KOLNP-2014-REQUEST FOR CERTIFIED COPY [23-11-2024(online)]-1.pdf | 2024-11-23 |
| 25 | FORM 2 & Complete Specification.pdf | 2014-08-01 |
| 25 | FORM 5.pdf | 2014-08-01 |
| 26 | FORM 3.pdf | 2014-08-01 |
| 26 | 1593-KOLNP-2014-FORM-26 [28-11-2024(online)].pdf | 2024-11-28 |
| 27 | FORM 5.pdf | 2014-08-01 |
| 27 | 1593-KOLNP-2014-Response to office action [17-12-2024(online)].pdf | 2024-12-17 |
Search Strategy
| 1 | searchstrategy1593mumnp214_09-05-2018.pdf |