http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4438047-A
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ba9d112bd5997e7cef959c462c4469ad |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-06 |
filingDate | 1981-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 1984-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e81cf277a8c312a424824ae6a265ee4f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c03c162ba3683c9c2f5ddc44c7b411d6 |
publicationDate | 1984-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-4438047-A |
titleOfInvention | Process for the preparation of an aqueous 3-chloro-2-sulfopropionic acid reagent |
abstract | An improved and novel process for the preparation of an aqueous 3-chloro-2-sulfopropionic acid reagent involves the formation of a reaction mixture by adding acrylic acid to chlorosulfonic acid maintained at about 45 DEG to 130 DEG C., maintaining the mixture at about 60 DEG -130 DEG C. for about 2-6 hours, and adding sufficient water to the resulting anhydrous reagent to decompose the unreacted chlorosulfonic acid and dilute the reagent to a solids content of about 50-95%, preferably 70-90%. The reagent may be vacuum stripped to remove residual hydrochloric acid. Crystalline 3-chloro-2-sulfopropionic acid may be isolated from the aqueous reagent at a solids content above 80% and below 95%, preferably at 85%. |
priorityDate | 1980-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.