Process for production of methyltetrahydrophthalic anhydride
US5237074A · kind A · utility
1Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Oct 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/567
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides a process for producing methyltetrahydrophthalic anhydride characterized in that maleic anhydride and a C.sub.5 fraction are subjected to Diels-Alder reaction in the presence of a radical polymerization inhibitor and oxygen. According to the process of this invention, formation of gels as byproduct is substantially completely inhibited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.