http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4411755-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31725 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2971 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-2969 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2377-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-805 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K77-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29L7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C55-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L77-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L77-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-80 |
| filingDate | 1994-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1995-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4411755-A1 |
| titleOfInvention | Process for the production of fibers or films using special molding solutions, and the fibers or films available thereafter |
| abstract | The prodn. of fibres or film comprises (a) producing an aromatic polyamide by polycondensation of diacid dihalides, at least 90 mole% of which have the formula (I), with at least 2 diamines, at least 90 mole% of which have the formula (I), with at least 2 diamines, at least 90 mole% of which have the formula (II) and opt. (III), in N-acyl-lactam or pref. NMP as solvent, opt. in presence of a salt to increase the solubility of the polyamide, so that the proportion of units derived from (II) in the polyamide is at least 50 mole% (w.r.t. (II)+(III) and the polyamide itself is soluble in organic solvents Hal-OC-Ar<1>-CO-Hal (I) H2N-Ar<2>-NH2 (II) H2N-Ar<3>-NH2 (III) Ar<1>, Ar<2> = arylene with free valencies in the para or corresp. parallel or coaxial position; Ar<3> = metal-arylene or corresp. angled structure; (b) opt. storing the mixt. at 40-100 (pref. 60-70) deg C; (c) forcing the polyamide soln. obtd. through dies of the required cross-section at 40-120 deg C to give fibres or film; (d) removing the solvent by known methods to give low-solvent or solvent-free fibres or film with adequate mechanical stability and lack of stickiness; and (e) opt. stretching by known methods. Also claimed is the above spinning/extrusion soln. (a) for the prodn. of fibres or film. Also claimed are fibres and films contg. at least 90 mole% of polyamide units of formula -OC-Ar<1>-CO-NH-Ar<2>-NH (VIII) and opt. -OC-Ar<1>-CO-NH-Ar<3>-NH- (IX), with a content of Ca and/or Li cpds. of less than 100 ppm w.r.t. dry wt. of polyamide. |
| priorityDate | 1994-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.