http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1421209-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47becd0bad1e8c65826be1edac09d306 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-00 |
| filingDate | 1973-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1421209-A |
| titleOfInvention | Fluorine-containing elastomeric polyamides |
| abstract | 1421209 Perfluoropolyether polyamides MONTECATINI EDISON SpA 26 April 1973 [26 April 1972] 19884/73 Heading C3R An elastomeric perfluoropolyether polyamide comprises units (U) where units -CF 2 O- and -C 2 F 4 O- are randomly distributed; n and m are each 2-100, n+m is 5-200, and m/n is 0À2-1À5; R is H, alkyl, or phenyl; and A is (a) a C 2-20 aliphatic hydrocarbon radical, (b) an alicyclic hydrocarbon radical with a C 5-10 ring, (c) an aromatic heterocyclic radical with a C 5-6 ring, (d) an aromatic or alkylaromatic hydrocarbon or chlorinated hydrocarbon radical, or (e) a radical comprising two or more substituted or unsubstituted benzene rings linked directly or through an -NH-, -CO-, -SO-, -SO 2 -, alkylene, or vinyl group. The polydispersivity index may be 1À0-1À3. The polyamide may also contain up to 30% by number, with respect to unit (U), of recurring units (V) containing additional functional group(s) that provide reactive points for cross-linking, these groups being, e.g. a double-bond, or -COOH, -SO 3 H, -OH, or amino or alkylamino. These units (V) may be derived from an ester of fumaric acid, or 3,5- diaminobenzoic, 3,5-diaminobenzenesulphoric, pyromellitic, benzophenone tetracarboxylic, trimellitic, or cyclohexenylenedicarboxylic acid, or 1,3,5-benzenetriamine or 4,4<SP>1</SP>-stilbenediamine. Cross-linking may be performed with an organic peroxide, an organic polyfunctional acid or base, or an oxide or salt of an electropositive metal. The polyamide is prepared by polycondensing at from room temperature to 280‹ C. an ester or acid chloride of the corresponding dicarboxylic acid with the corresponding diamine. The reaction may be performed as a solution or dispersion in an organic medium. There may be present excess diamine, or a tertiary amine. When phenyl esters are employed, the polymerization may be performed in the presence of solvents forming azeotropic mixtures with the by-product phenol. The polyamide may be mixed with carbon black or CaCO 3 . |
| priorityDate | 1972-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.