Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-01 |
filingDate |
1991-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
1996-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80de6ae4b6cb2633dd4dbb98a547ecb9 |
publicationDate |
1996-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-0552255-B1 |
titleOfInvention |
Manufacture of high-purity hydroxyacetic acid |
abstract |
The invention relates to a process for the manufacture of high-purity, crystalline hydroxyacetic acid from crude hydroxyacetic acid made by the carbonylation reaction of formaldehyde and water in the presence of an organic acid and sulfuric acid by employing a crystallization step during the purification of the crude hydroxyacetic acid. |
priorityDate |
1990-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |