| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D10B2401-063 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D02G1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D10-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-805
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01D5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D02G3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-905 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D02G1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D10-06 |
| filingDate |
2016-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_26f11416fe54bf879604c4c61c9af513
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89ebffebeec153b65f973334ccfb6737 |
| publicationDate |
2017-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2017016145-A1 |
| titleOfInvention |
Copolymer fibers and yarns and processes for making same |
| abstract |
The present invention concerns methods for obtaining high-tenacity aramid yarn, wherein the yarn is made of a copolymer obtained from a mixture of monomers comprising 5-(6)-amino-2-(p-aminophenyl)benzimidazole, an aromatic para-diamine, and an aromatic para-diacid; the method comprising: a) spinning said copolymer from an inorganic acid solvent to produce the aramid yarn; b) washing said yarn with a basic aqueous solution for at least 5 seconds; and c) heating said yarn; wherein the yarn is heated in at least two process steps, characterized in that (i) in a first step the yarn is heated at a temperature of 200 to 360° C. at a tension of at least 0.2 cN/dtex, followed by (ii) a second step wherein the yarn is heated at a temperature of 370 to 500° C. at a tension of less than 1 cN/dtex. In some embodiments, the yarn has an effective polymer cation to sulfur content molar ratio of at least 0.3. In some embodiments, the yarn has a hydrolytic strength retention of the yarn is greater than 60% |
| priorityDate |
2011-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |