http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2533271-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_838cee78914619aafc3c752655e1fcc4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3873 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F11-1676 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F11-167 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F5-14 |
| filingDate | 1975-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4b0d39d5c4138f2a90d907c0738a2ba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d21bdb42159fa5b7a9393dc70b24dece |
| publicationDate | 1977-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2533271-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF N-ACYL-N-ALKYLAMINOMETHANDIPHOSPHONIC ACIDS |
| abstract | Prepn. of N-acyl-N-alkylaminomethane diphosphonic acids having formula H-C(PO3H2)2-N(R1)(CO-R2), (I), (where R1 and R2 are 1-4 C alkyl) by reacting N-alkyl formamide (II) with phosphorus acid (III) and acyl chloride (IV), pref. at 40-80 degrees C. Pref. mol. ratio (I):(III):(IV) is 1:0.5:0.5 to 1:2.5:2.5. (I) are complex-formers for di- and polyvalent metal ions, e.g. Ca. (I) can be incorporated to detergent compsns. They are partic. useful for automatic bottle-washing and for tank and container cleaning. Substoichiometric quantities of (I) prevent scale-deposition in aq. systems. (I) are also used to stabilise water hardness in cooling cycles. |
| priorityDate | 1975-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.