| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b9c004cd2bb28e4ee931f97995e5e6a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-25375
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-25125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-201666 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-22 |
| filingDate |
1984-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de4d20eb5c6ddd06ca0a3bae9c43e3e5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b56409512fbda1c867fe6a75ce7b027b |
| publicationDate |
1985-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0144130-A1 |
| titleOfInvention |
Method for the colorimetric determination of polygarboxylates and sulphonates inaqueous systems |
| abstract |
The concentration of sulphonate and or polycarboxylate compounds in an aqueous solution is determined by adjusting the pH of a portion of the aqueous solution to less than 3.0 when measuring sulphonate concentration or to between 3.0 and 12.0 when measuring polycarboxylate concentration; adding an effective amount of an aqueous solution of a metachromatic dye to the pH-adjusted portion; measuring the absorbency of the resulting admixture at a wavelength between 300 nm and 700 nm; and comparing this absorbency with absorbencies of standard samples containing known concentrations of polycarboxylate compounds and or sulphonate compounds, thereby determining the desired sulphonate and/or polycarboxylate concentration. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016078759-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-10027236-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008147618-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0136542-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8178353-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107110837-A |
| priorityDate |
1983-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |