Non-catalytic pyrolysis of residues from aromatic carboxylic acid manufacture
US4266084A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1979 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Oct 19, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C1/2078
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Commercially attractive amounts of benzene and toluene can be obtained from a solid mixture of aldehydo-, carboxy-, keto- and carboxy-, carboxy- and aldehydo-substituted benzene and toluene including such mixtures also containing cobalt and manganese salts of organic acids and inorganic and organic bromides obtained from the manufacture of benzene di- and tricarboxylic acids by non-catalytic pyrolysis of such mixture or gases and vapors therefrom at a temperature of at least 700.degree. C. Such non-catalytic pyrolysis is more technically attractive than catalytic pyrolysis conducted at a temperature of from 300.degree. C. to 500.degree. C. which has a short activity life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.