| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_748107463af258c025bdfa3f525fae30 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B15-037
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-394 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B15-037
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L2-18 |
| filingDate |
1990-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0aaf59dfbea1e07bfc257458c432f87f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d550fc4b8a222f3fea69ab9f70e275db
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b37694d41f4637417cd39bb6d70376c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a4e04600b5b2645704eec664508a6b6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1d989a53c2d3e161c45c5e34927cbb5 |
| publicationDate |
1992-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9109807-A3 |
| titleOfInvention |
Stabilisation of hydrogen peroxide solutions |
| abstract |
Dilute aqueous alkaline hydrogen peroxide solutions obtained by dilution of and addition of alkali to a concentrated acidic hydrogen peroxide solution and addition of an aminopolyalkylene phosphonic acid compound as stabiliser can enjoy improved stability by introducing a delay between the addition of the stabiliser and the formation of the dilute alkaline solution sufficient to permit the stabiliser to be transformed to a more active derivative. Preferably, the stabiliser introduced is cyclohexane-1,2-diaminotetrakis (methylene phosphonic acid), and the dilute solution has a pH of from 8.5 to 9.5, and contains sodium pyrophosphate and/or bicarbonate as buffer, at least part of which may be added to the concentrated hydrogen peroxide solution before dilution. |
| priorityDate |
1989-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |