Method of copolymerizing aniline compounds
US5820743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/0266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing copolymers having magnetic properties, the method comprising a first step of copolymerization, by oxidation in an acid medium, of a first monomer selected from aniline, possibly substituted aniline, and the corresponding iminoquinone forms, and of a second monomer selected from substituted aminoaromatic compounds, wherein the first step comprises: an induction stage during which the first monomer is put into the presence of at least one oxidizing agent and at least one initiating agent; and a production stage during which, after the second monomer has been added, at least one oxidizing agent and at least one initiating agent are added progressively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.