Process for producing pure terephthalic acid with improved recovery of precursors, solvent and methyl acetate
US6143926A · kind A · utility
37Cited by
2References
1Claims
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Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for producing pure terephthalic acid having improved means for recovering and/or recycling terephthalic acid precursors, residual acetic acid and other reaction by-products, such as methyl acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.