http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0368157-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1c7d818864ce69f0dc8548437f22a997 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F11-1676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3808 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-167 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K15-32 |
| filingDate | 1989-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_360ea008465a42d2df0ca399ccc1fe54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78fa025377ddc6a1c7a2bea0fe27bc07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f7269527f52fd748f5ec6767035848c |
| publicationDate | 1990-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0368157-A1 |
| titleOfInvention | Corrosion inhibitor |
| abstract | A method of preparing phosphonate compositions comprising di-(phosphonomethyl) formal is disclosed which comprises (a) forming an intimate mixture of hydroxymethylphosphonic acid and formaldehyde or its condensates, said mixture having a least about 0.5 equivalents of formaldehyde per equivalent of hydroxvmethylphosphonic acid; and (b) subjecting said intimate mixture to a temperature of between about 100°C and 180°C for a time sufficient to allow the components to react to form a reacted mixture comprising di-(phosphonomethyl) formal. Di-(phosphonomethyl) formal, phosphonate compositions wherein at least bout 25 more % of the phosphonate groups are present as di-(phosphonomethyl) formal, and phosphonate compositions which comprise hydroxymethylphosphonic acid and di-(phosphonomethyl) formal such that the mole ratio of phosphonate groups present as di-(phosphonomethyl) formal to phosphonate groups present as hydroxymethylphosphonate is at least about 1:3, as disclosed, may be used for corrosion inhibition in aqueous systems. |
| priorityDate | 1988-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.