http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4228619-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 |
| filingDate | 1992-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1994-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4228619-A1 |
| titleOfInvention | Aromatic copolyamides, process for their preparation and structures formed therefrom |
| abstract | Aromatic copolyamides (I) with inherent viscosity (i.v.) at least 3.5 (esp. 4.5) dl/g (0.25% soln. in NMP), which are soluble in polyamide solvents, are claimed. (I) contain 40-65 mol.% units of formula (Ia), 5-55 mol.% units (Ib), 5-35 mol.% (Ic) and opt. 0-30 mol.% (Id), where R1 = unsubstd. arylene (at least 80 mol.% linked in para-, corresp. coaxial or parallel positions, and up to 20 mol.% linked in meta- or corresp. angled positions); R2 = unsubstd. arylene (para-, coaxially- or parallel-linked); R3 = a gp. which is different from R2, with formula (II) and/or (III) and/or (IV) and/or (V): (with Hal = halogen, R4 = 1-6C alkyl or alkoxy and/or Hal); X, Y = S, SO2, CO or O. Also claimed is a process for producing (I), by reacting diacid chlorides of formula ClOC-R1-COCl with diamines corresp. to units (Ib), (Ic) and (Id). Specifically X and Y = O; at least 90 (pref. 100) mol.% of all R1 gps. = 1,4-phenylene and up to 10 mol.% = 1,3-phenylene; R2 = 1,4-phenylene. Amts. of units are 45-55 mol.% (Ia), 35-45 mol.% (Ib), 5-25 mol.% (Ic) and 0 or 5-20 mol.% (Id). Also claimed are moulded prods. obtd. from (I), esp. fibres, films and coatings, partic. fibres with strength 90-250 (pref. above 200, esp. pref. 200-250) cN/tex, initial modulus (100% elongation) 25-60 N/tex, elongation at break 3-7% and loop strength above 80 (pref. 85-120) cN/tex. Also claimed is a process for producing fibres from (I), by spinning the fibres, applying an aq. suspension of a stable prepn. contg. particles of inert inorganic material as fibre lubricant, drying to form a layer of lubricant and stretching the treated fibre at above 300 (pref. 350-550) deg.C. Also claimed is the use of fibres of (I) for reinforcing plastics, esp. elastomers, and the use of films of (I) for producing membranes. |
| priorityDate | 1992-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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