Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange
US7501537B2 · kind B2 · utility
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48References
47Claims
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Key dates
| Filing date | Mar 1, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Mar 1, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/265
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system minimizes or eliminates the need for liquor exchange upstream of oxidative digestion and/or upstream of substantial cooling of the TPA-containing slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.