http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-122169-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ddebf7e15754770fbbb93b25d4c20279 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| filingDate | 1918-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1920-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-122169-A |
| titleOfInvention | Improved Process of Sulphonating Benzene. |
| abstract | 122,169. Barrett Co., (Assignees of Downs, C. R.). Jan. 5, 1918, [Convention date]. Sulphonic acids.-The sulphonation of benzene is effected under reduced pressure in order to remove the water formed and thereby prevent dilution of the sulphonating acid. Preferably, the benzene is continuously added to the acid and brought into intimate contact therewith, any excess of benzene passing off with the water being recovered. The conditions may be adjusted so as to prcduce benzene mono- or di-sulphonic acids ; appropriate temperatures and pressures are specified. Using the apparatus shown, two or more jacketed sulphonators 1, 2 are charged with sulphuric acid and benzene (liquid or vapour) is led in by pipe 5; the tops of the sulphonators are connected by a pipe 8 to a vacuum pump 12 and condenser 13; the pipes 5, 8 are connected by a pipe 11. Supply pipes 22, 24, and draw-off pipes 23, 25, also are provided. By manipulation of the valves on the several pipes, the sulphonators may be worked in parallel or in series. A partially sulphonated mixture of benzene,' its monosulphonic acid, sulphuric acid, and water, may be heated under reduced pressure as described to remove the water and complete the sulphonation. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the sulphonation of other hydrocarbons and their derivatives in the manner described above. This subject-matter does not appear in the Specification as accepted. |
| priorityDate | 1918-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 15.