http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5799545-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9f2aa9565f6a60fddb5b4a47449ed278 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63 |
| filingDate | 1980-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d646d65864ba2a1bbb9d42467d7351ef http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd7f2917edf4d4ed433e834ffd0310b1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ea55e3cecbfe54ef2da6e48980ef7f3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de1d83d1bd9dedb580b505f58641f73f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9385cb1bc9e4593ec24330f6c5906d45 |
| publicationDate | 1982-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5799545-A |
| titleOfInvention | Preparation of chloroacetaldehyde |
| abstract | PURPOSE: To prevent the reduction in yield by the deterioration and increase the concentration, by neutralizing the formed hydrogen chloride as a by-product with an alkali into an alkali chloride in reacting acetaldehyde, etc. with chlorine to give chloroacetaldehyde which is a raw material for medicines. n CONSTITUTION: Acetaldehyde or para-acetaldehyde is reacted with chlorine to prepare chloroacetaldehyde. In the process, the formed hydrogen chloride as a by-product is neutralized with an alkali, preferably sodium hydroxide or calcium hydroxide, to give the alkali chloride, which is then separated by the filtration. The resultant filtrate is then distilled to afford the aimed compound. The molar amount of the alkali is 0.7W1.2times, preferably 0.85W1.0, that of the hydrogen chloride. The alkali may be added continuously or in portions to the reaction mixture. n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1980-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.