http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CH-504506-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06L4-657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D235-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06L3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06L4-657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D235-20 |
| filingDate | 1968-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d16ca09482cec431baffec7944b2485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23b3a4dbb2c22ce4a4dc4180e3b53716 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2475cb05665749cc10cc1eeb42aaca8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_656f99f79c79b75859f2e27a493003d4 |
| publicationDate | 1971-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CH-504506-A |
| titleOfInvention | Process for the optical brightening of non-textile substrates |
| abstract | Naphthylene-bis-2-benzimidazoles as optical brighteners New cpds:- (where R = naphthylene; R' = H, alkyl, aralkyl, aryl, opt. substd.; R2 and R3 = H, halo, alkyl, alkoxy, aryl or COOH or SO3H or derivs. thereof, or R2 + R3 = C3-4 alkylene or a fused ring aromatic gp.) are prepd. by reaction (i) of 1 mol. of a naphthylene dicarboxylic acid (or a deriv.) with 2 mols or slighty more of an o-diamino benzene deriv. in the presence of a catalyst at 100 - 250 degrees C in the absence of oxygen, or (ii) of 1 mol. of a naphthalene dicarboxylic acid dichloride with 2 mols or slightly more of an o-nitroaniline deriv., reduction of the NO2 right arrows NH2 and ring closure. |
| priorityDate | 1967-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 112.