http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3030734-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-095 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-46 |
| filingDate | 1980-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d3ae0031ffb9f584e2031f8226b6bf99 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_883cd435ef23d171e1fb31c98c72d605 |
| publicationDate | 1982-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3030734-A1 |
| titleOfInvention | METHOD FOR PRODUCING DIGLYCOLIC ACID |
| abstract | Anhydrous diglycolic acid prepn. comprises (a) the hydrolysis of di-n-butyl diglycolate with water and an acid catalyst. The n-butanol generated is distilled off as an azeotrope with water. (b) The aq. diglycolic acid formed in hydrolysis is dehydrated azeotropically with an organic solvent which is water-immiscible or difficultly miscible with water. Diglycolic acid is crystallised from the solvent. The organic solvent is esp. Meiso-BuCO (pref.), Et2CO or di-n-butyl ether. Diglycolic acid itself can be used as catalyst. Diglycolic acid is used as a coagulant for rubber and plastics, as an emulsion breaker for petroleum and as a synthesis intermediate. Over 99 wt.% pure diglycolic acid is obtd. in high yields, e.g. 93%, from di-n-Bu diglycolate, previously burnt as a waste-prod. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102001981-A |
| priorityDate | 1980-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.