| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e9445e5e3626f36e932c6451a928250 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06L4-664
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06L3-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 |
| filingDate |
1993-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_118d96191f5459b618bea88a8bd7f329 |
| publicationDate |
1994-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0586346-A1 |
| titleOfInvention |
Method for the preparation of distyrylbiphenyl compounds |
| abstract |
Process for the preparation of distyrylbiphenyl compounds of the formula (1) wherein R₁ is hydrogen, C₁-C₅ alkyl or halogen; M is a salt-forming colorless cation; n is 2 or 4, by condensation of a substituted or unsubstituted 4,4'-bis (dialkoxyphosphonomethyl) diphenyl compound with a substituted benzaldehyde in liquid ammonia as a solvent and in the presence of strong bases; and the use of these distyrylbiphenyl compounds as optical brighteners. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0624687-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0957085-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101845233-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5622749-A |
| priorityDate |
1992-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |