| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e4b42a62479355e3612c7309fe680e9a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-375
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F265-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H23-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L33-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F265-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H23-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-07 |
| filingDate |
2016-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7894c542a209b5e031ad12bac85116be
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c93c66a5b244e321ae77e9d5dad05e40 |
| publicationDate |
2018-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2018162966-A1 |
| titleOfInvention |
Method for producing polyacrylamide composition |
| abstract |
Disclosed is a method for producing an aldehyde crosslinked polyacrylamide composition useful for strengthening paper. The method includes steps, wherein a) an aldehyde crosslinker and polyacrylamide are mixed in water to form an aqueous solution of aldehyde crosslinked polyacrylamide prepolymer; b) acid is added to the aqueous prepolymer solution to adjust the pH of the solution to a value from 1 to 5; c) storing and transporting the prepolymer solution to the location where the final glyoxalated polyacrylamide composition will be used; and d) adding a base to the stabilized prepolymer solution to adjust the pH of the solution to a value from 5.5 to 12, and e) allowing the aldehyde crosslinker and polyacrylamide contained in the aldehyde crosslinked polyacrylamide prepolymer solution to react further and form aldehyde crosslinked polyacrylamide composition useful for strengthening paper. |
| priorityDate |
2015-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |