Process for producing methacrylimide group-containing polymer
US4927893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Sep 12, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/185
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing continuously a methacrylimide group-containing polymer by adding a compound represented by the following formula: EQU R--NH.sub.2 wherein R represents H, an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 7 to 11 carbon atoms, or an aryl group having 6 to 10 carbon atoms, to a methacrylic polymer in the presence of a solvent, and carrying out the imidization reaction is disclosed. Key point of the process is that raw materials for said reaction are fed from one end part of a reactor, and liquid mixture that finished the reaction is removed from other part of the reactor positioned not lower than the one end part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.