http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-738178-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b30d807376962224a66aa244d678104a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-88 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-88 |
| filingDate | 1952-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66fb737c162db74f195cb73b7b938d95 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f64c0d72af91c1342613008a019b153 |
| publicationDate | 1955-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-738178-A |
| titleOfInvention | Improvements relating to the production of esters of hydroxy aryl carboxylic acids |
| abstract | Monoesters of ethylene glycol with hydroxy-aryl carboxylic acids are prepared by heating ethylene glycol with a lower alkyl ester of a hydroxy-aryl carboxylic acid in the presence of a base derived from an alkali metal. By "lower" alkyl is meant an alkyl group containing from one to four carbon atoms. Suitable hydroxy-aryl acids are, for example, salicylic acid, p-hydroxy-benzoic acid or m-cresotinic acid. Acids containing a naphthalene nucleus are also suitable. The base derived from an alkali metal may be inorganic or organic, e.g. alkali metal hydroxides, carbonates, bicarbonates, alcoholates and alkali metal salts of weak organic acids such as salicylates and acetates. Preferably the lower alkanol formed as a by-product is removed continuously by distillation. In the examples: (a) ethylene glycol and methyl salicylate are heated in the presence of (i) sodium carbonate; (ii) potassium carbonate and (iii) sodium hydroxide, to give ethylene glycol monosalicylate; and (b) ethylene glycol and methyl-m-cresotinate are heated in the presence of potassium carbonate to give ethylene glycol-mono-m-cresotinate. |
| priorityDate | 1952-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.