http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0012909-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F11-1676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K23-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65068 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-167 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6506 |
| filingDate | 1979-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1983-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1983-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0012909-B1 |
| titleOfInvention | Benzimidazolyl-2-alkane-phosphonic acids and their salts, process for their preparation and their use as corrosion inhibitors or wetting agents |
| abstract | A benzimidazolyl-2-alkane-phosphonic acid of the formula <IMAGE> wherein R1 and R2 are identical or different and denote hydrogen, lower alkyl, phenyl, halogen, trifluoromethyl, nitro or lower alkoxy, or together form a fused-on benzene ring, R3 denotes hydrogen, lower alkyl or phenyl or benzyl which is optionally substituted by lower alkyl or halogen and A denotes a straight-chain or branched, saturated or unsaturated bivalent hydrocarbon radical with 1 to 15 carbon atoms, which can be substituted by phenyl which is optionally substituted by lower alkyl or halogen or by carboxyl or the phosphonic acid group, and its salt with an inorganic or organic base or acid, and a method of preparing the same by contacting an o-arylene diamine of the formula <IMAGE> wherein R1, R2 and R3 have the meaning given above, with a phosphonocarboxylic acid of the formula <IMAGE> wherein Y denotes carboxyl, carbalkoxy, carbophenoxy, cyano, carbamido or carbochloride, R7 and R8 are identical or different and denote hydrogen, lower alkyl or phenyl, or together can form a ring, by means of an ethylene or propylene bridge, and A' denotes a straight-chain or branched, saturated or unsaturated bivalent hydrocarbon radical with 1 to 15 carbon atoms, which can be substituted by phenyl which is optionally substituted by lower alkyl or halogen or by Y or the group <IMAGE> wherein Y, R7 and R8 have the abovementioned meaning, in the presence of an acid.. The new benzimidazolyl-2-alkane-phosphonic acids are useful as anti-corrosion agents (corrosion inhibitors), as well as wetting agents for aqueous suspensions of pigments and fillers. |
| priorityDate | 1978-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.