| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C14C3-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C14C1-08 |
| filingDate |
1988-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fcdf6819135a0de0aeb51b26e8046da
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_95fece71f7dc7d0c347d6f1ff343962e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f33badb4a809f45b9181455bd4e028d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f39f8193c01549391e038fd4fe82768
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33fd273952f4bca1ea534f4b054ac2b0 |
| publicationDate |
1990-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4919680-A |
| titleOfInvention |
High-extraction chrome tanning process |
| abstract |
Crome tanning of pickled animal hides with a tanning agent comprising a reaction product of a basic chromium (III) sulfate and aliphatic C4-C6 dicarboxylic acids or their salts is improved by preparing the reaction product in an aqueous solution from basic chromium (III) sulfate and 0.2 to 0.8 mol of the aliphatic dicarboxylic acids per mol chromium oxide of the basic chromium sulfate with subsequent adjustment of the theoretical basicity to 0 to 50% with alkali metal hydroxide or carbonate, the reaction product being added to a hide pickling liquor in the form of an aqueous solution having a chromium oxide content of at least 5% or in powder form in a quantity of 0.9 to 1.5% chromium oxide, based on hide weight, with a liquor volume less than 100%, based on hide weight, the final pH value being above 4.0 and the final temperature above 40 DEG C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108002478-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009158530-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005211633-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5725599-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009082361-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004087967-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106119438-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5820634-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108002478-A |
| priorityDate |
1987-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |