4-(N-benzyl-N-methylamino)pyridine acid salts and use in preparation of polymer-supported catalysts
US5147954A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Nov 5, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F12/26
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A cross-linked polymer-supported 4-(N-benzyl-N-methylamino) pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer-supported catalyst is characterized by the suspension copolymerization of an organic phase containing the corresponding vinyl-substituted pyridine monomer, a styrene monomer, and a suitable cross-linking agent and free radical-generating catalyst in the presence of an aqueous phase containing a cellulose ether derivative as the stabilizing agent. A purified acid salt of the vinyl-substituted pyridine monomer useful in polymerizations and stable for storage as either a solid or an aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.