| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2377-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-09 |
| filingDate |
1971-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1973-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a28fd23f1706b37c43406768e934f33 |
| publicationDate |
1973-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3775361-A |
| titleOfInvention |
Preparation of stable concentrated solutions of aromatic nitrogen-linked condensation polymers |
| abstract |
SOLUTIONS OF AROMATIC NITROGEN-LINKED CONDENSATION POLYMERS SUCH AS POLYAMIDES AND POLYHYDRAZIDES ARE PREPARED BY FILTERING A MIXTURE OF THE POLYMER, A POLAR SOLVENT, AND A PARTIALLY SOLUBLE CHLORIDE SALT OF A VOLATILE NITROGENOUS BASE TO REMOVE THE INSOLUBLE PORTION OF THE SALT, ADDING A SUFFICIENT AMOUNT OF A NON-VOLATILE INORGANIC BASE WHICH FORMS A SOLUBLE CHLORIDE SALT FOR CONVERSION OF THE SOLUBLE PORTION OF THE SALT OF THE VOLATILE NITROGENOUS BASE AND ANY REMAINING ACIDITY OF THE SOLUTION TO INORGANIC SALTS, FOLLOWED BY SUBSTANTIALLY COMPLETE REMOVAL FROM THE MIXTURE OF THE VOLATILE NITROGENOUS BASE. THE RESULTANT SOLUTIONS POSSESS GOOD STABILITY OF VISCOSITY DURING EXPOSURE TO THE TEMPERATURES INVOLVED IN CONCENTRATION OF THE SOLUTION AND IN DRY-SPINNING FIBERS FROM THE SOLUTIONS. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0157425-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4895660-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3933963-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4070326-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2452507-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4824916-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2368290-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3991037-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2368289-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0157425-A2 |
| priorityDate |
1971-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |