Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4b1aa2b8a570e7ceaa83e2a0eae6daea |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C53-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-087 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-087 |
filingDate |
2020-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2021-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b354979a4e63bf2d568e1dd6da7f120d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_944ec3d1860d0d7fb0dee9a4fb2cf6fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a550405047ec502875ad52497802fa70 |
publicationDate |
2021-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-10899696-B2 |
titleOfInvention |
Processes for purifying acetic acid and hydrating anhydride |
abstract |
Processes for purifying acetic acid by distilling a process stream in a column in which acetic anhydride is formed in the lower portion of the column. The product stream withdrawn from the column comprises acetic acid, water at a concentration of no more than 0.2 wt. %, and acetic anhydride at a concentration of no more than 600 wppm. The process further comprises hydrating the acetic anhydride in the product stream to form a purified acetic acid product comprising acetic anhydride at a concentration of no more than 50 wppm. |
priorityDate |
2015-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |