| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af7c9c966acd2ef7eca105d82d8d0991 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T436-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0295
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-0006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0286
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0281 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate |
1991-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1993-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa09831279d54ce898d3f6235f23bb75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90c0ca3461e09dfe3d0cb6c6217f7b7c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7cd664f6797627ce2ca384e66c54bf5f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df832cfe566bd6c65044cd9fcc6d1f5e |
| publicationDate |
1993-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5209855-A |
| titleOfInvention |
Continuous acid washing of polymer resin with controlled metering of acid |
| abstract |
A batch type process for purification of a polymer resin, in which a predetermined volume of acid is rapidly emptied and stirred into a fixed volume of polymer slurry for chemically treating impurities in the slurry, is converted to a continuous operation by supplying a substantially constant stream of polymer slurry and a controlled stream of acid to a mixing vessel. pH control of the polymer slurry required for effective purification of the polymer resin is achieved by manipulating the flow rate of the acid stream responsive to a feedforward control signal which operates in conjunction with a feedback signal. The feedforward signal is based on an upstream measurement of slurry flow rate to the mixing vessel and the feedback signal is based on a downstream pH measurement of slurry flowing from the mixing vessel. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5389244-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6562238-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9615178-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0818493-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0818493-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5824767-A |
| priorityDate |
1991-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |