http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1692981-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e488ed6f726bfe725bce9772ce6f20c2 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-30 |
| filingDate | 1989-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7dbc8b91745f82c7451829df1f06d2ac |
| publicationDate | 1991-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1692981-A1 |
| titleOfInvention | Method for obtaining toluenesulfoacid |
| abstract | The invention relates to sulphonic acids, in particular the preparation of toluene sulphonic acid used as a hardener for furniture lacquer. The goal is to improve the quality of the target product. For this purpose, sulfonation of toluene conc. NgZO first for the first 2 hours at 122-126 ° C, mass ratio of acid and toluene 1: (3.46- 5.175), and then at 130-135 ° C. In this case, the formation of sulfonic impurities is reduced, which increases the yield and quality of the target acid (the content of p-toluenesulfonic acid isomers is 87% with a basic product content of 87% and an optical density of 25% of a foot-butanol solution 0.05). |
| priorityDate | 1989-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.