| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62cc297ee36192e8d9405254c41c6d60 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C14C3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C14C3-28 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C3-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C3-06 |
| filingDate |
1973-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_368fef80a9019532b41bcce86dd57d11 |
| publicationDate |
1975-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3888625-A |
| titleOfInvention |
Method of chrome-retanning leather |
| abstract |
An improved process of chrome-retanning leather in which leather to be chrome-retanned is contacted with basic chromium sulfate and a sulfite salt in an aqueous environment and thereafter the leather is contacted with an aldehyde to deposit chrome as Cr2O3 in the leather and form a leather having over 6 percent by weight of Cr2O3 based on the dry weight of the leather. Sodium sulfite or potassium sulfite can be used as the sulfite salt. Representative aldehydes which can be used are formaldehyde, glutaraldehyde, benzaldehyde, or a compound which in the presence of an acid is converted to an aldehyde. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021145188-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5140058-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5972037-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4285689-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4060384-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4270912-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2021145188-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5550217-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0204213-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4327997-A |
| priorityDate |
1973-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |