Method for making adipic acid
US6822117B1 · kind B1 · utility
2Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Apr 22, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/43
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the manufacture of adipic acid, more particularly of adipic acid crystals.It relates more specifically to a process for the treatment of the adipic acid crystals obtained on conclusion of crystallization, which consists in dispersing the adipic acid crystals collected on conclusion of crystallization in a liquid medium, in stirring the said liquid medium and in then separating the said crystals from the said liquid medium and optionally drying them.The form of the crystals is modified in order to obtain pebbles with a substantially smooth surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.