| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d89771e955732f7c61f745b38b63159e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ebe4f47e539fab44aa11c766b3936641 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2230-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2215-064 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M133-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-55
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M177-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M177-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M133-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-55 |
| filingDate |
2015-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2018-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26f3b3185fc37e8242fc675581318d19 |
| publicationDate |
2018-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9890346-B2 |
| titleOfInvention |
Selective alkylation method for producing p, p′-di-alkylated diphenylamine antioxidants |
| abstract |
Liquid diphenylamine compositions comprising predominately p,p′-di-alkylated diphenylamines and low amounts of mono-alkylated diphenylamines are prepared by adding an olefin to a mixture comprising mono-alkylated diphenylamines, di-alkylated diphenylamines, Lewis acid catalyst and an amount of another olefin sufficient to suppress dealkylation of the alkylated diphenylamines. |
| priorityDate |
2014-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |