http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2804330-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bcd600c789c13101f39db5af4f289a97 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44 |
| filingDate | 1978-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_113d431db4376eecedc697815a050931 |
| publicationDate | 1979-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2804330-A1 |
| titleOfInvention | METHOD OF PURIFICATION OF SULFOPHTHALIC ACIDS |
| abstract | Solid, crude H2SO4 - and water-contg. sulphophthalic acids, (I), esp. 5-sulphoisophthalic acid, are purified by (i) washing with >=1 aliphatic and/or cycloaliphatic 3-7C ketone, (II), and then (ii) sepg. the solids from liq.. (I) can be used as tanning auxiliaries, surfactants and as dyeability-improving co-condensates for linear polyesters. The ketone solvents (II) retain their low viscosity in contact with (I) and allow complete dissolution of H2SO4 with little loss of (I). Colourless (I) can be recovered in fine-grained, non-agglomerated form. H2SO4 content can be reduced from 2-8% to 0.05-0.15 wt.%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0186236-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0186236-A3 |
| priorityDate | 1978-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.