Method for producing acrylic acid
US7381839B2 · kind B2 · utility
1Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/47
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The objective of the present invention is to provide method for acrylic acid in which a generation of polymerized substance is prevented while acrylic acid is stored in a storage tank. A method of the present invention for producing acrylic acid, comprising storing acrylic acid in a storage tank, wherein a process liquid containing 50 mass % or more of acrylic acid is subjected to at least one filtering operation at 15 to 70° C. when the process liquid is supplied to the storage tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.