Process for the production of methyl methacrylate
US6670501B1 · kind B1 · utility
8Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the manufacture of methyl methacrylate includes a process for separating the methyl methacrylate from certain impurities, at least one of which has a freezing point of greater than −50° C., by a fractional crystallisation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.