Method for production of aqueous (meth)acrylic acid
US8044237B2 · kind B2 · utility
1Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Feb 27, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/43
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to recovery of aqueous (meth)acrylic acid by condensation of a (meth)acrylic acid-containing stream to produce aqueous (meth)acylic acid having a higher concentration of (meth)acrylic acid and a lower concentration of formaldehyde, i.e., not more than 0.1 weight %, than the aqueous (meth)acrylic acid produced using hithertofore known separation methods. The (meth)acrylic acid-containing stream may be the raw product stream of catalytic oxidation at least one C2-C4 alkane or alkene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.