http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H06207314-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad2cd796f8c4dcb425ddcc68707d3444 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-00 |
| filingDate | 1993-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e30d5e37986b8603ecdf11f773e580f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0751d6b77750285dac413472117c20d |
| publicationDate | 1994-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H06207314-A |
| titleOfInvention | Polyurethane elastic fiber |
| abstract | (57) [Summary] [Object] To provide a polyurethane elastic fiber having a reduced amount of aromatic amine and having improved resistance to yellowing. [Structure] A polyol is reacted with an excess mole of an aromatic diisocyanate to form a prepolymer, and the prepolymer is then mixed with a low molecular weight difunctional active hydrogen compound in an inert solvent in the presence of a small amount of a monofunctional active hydrogen compound. In the step of producing a polyurethane elastic fiber by spinning a polymer solution obtained by chain extension by a dry method or a wet method, by using a solvent which has been cooled in advance, the prepolymer dissolution step and the chain extension step are performed. A polyurethane elastic fiber having an aromatic amine content of 3 meq / kg or less after boiling water treatment, which comprises shortening the time and using an appropriate amount of a low molecular weight difunctional active hydrogen compound and a monofunctional active hydrogen compound. |
| priorityDate | 1993-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.