| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8a7ceba4425c3c228f451245dadff0bd |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5272
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52 |
| filingDate |
1973-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_102628fcda3f8c53d02dfcf08dd6fc2f |
| publicationDate |
1975-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3890227-A |
| titleOfInvention |
Treatment of process water |
| abstract |
Separation of emulsifiers which are salts of the condensation product of naphthalene sulfonic acid and formaldehyde from process water by contacting the process water with an amine having a molecular weight of at least 60. The process water and/or the amine is reduced to a pH of 7.0 or less prior to contacting. For example, polychloroprene is produced by emulsion polymerization using said salts as surfactants with the salts being washed out into process water. The process water is reduced to pH of 4.0 with HCl and then is contacted with polyethyleneamine. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4960772-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5220178-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6312560-B1 |
| priorityDate |
1971-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |