http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1378720-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd8f87c2e2155f28c291bf199765144f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F1-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-521 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F6-18 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M101-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M13-298 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M13-244 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M13-282 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-521 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M13-292 |
| filingDate | 1972-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1974-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1378720-A |
| titleOfInvention | Method for producing fire-retardant acrylic synthetic fibres |
| abstract | 1378720 Fire-retardant acrylic fibres JAPAN EXLAN CO Ltd 18 Oct 1972 48097/72 Heading B5B [Also in Division C3] Fire-retardant acrylic fibres derived from acrylonitrile homopolymers and copolymers have incorporated therein, as fire-retardant agent, a halo-phosphate of the formula wherein each of R 1 , R 2 and R 3 is a monovalent, halogen-substituted, aliphatic hydrocarbon radical having up to 8 carbon atoms, the halophosphate having an acid number of less than 5. The acrylic polymer preferably contains at least 70% by weight of acrylonitrile units; suitable comonomers include vinyl carboxylate esters, vinyl and vinylidene halides, (meth)allyl alcohol and esters thereof, (alk)acrylic acids and their esters, amides and nitriles, unsaturated sulphonic acids and their alkali metal salts, unsaturated hydrocarbons, and alkyl esters of unsaturated dicarboxylic acids. The halo-phosphates of the required acid number are obtained by preparing and storing them in the presence of the minimum possible amount of moisture or water. Incorporation of the fire-retardant agent into the fibres, preferably in an amount of 3-40% by weight of the fibres, is suitably effected by adding the halo-phosphate to a spinning solution of the acrylic polymer; in an alternative procedure the halophosphate is introduced by treating gelled acrylic fibres, obtained by a dry- or wet-spinning process, in a treatment bath containing the fire-retardant. The solvent used may be aqueous sodium or potassium thiocyanate or aqueous zinc or calcium chloride, or an organic solvent such as dimethyl formamide, dimethyl acetamide, ethylene carbonate or dimethyl sulphoxide. In examples acrylonitrile/ vinyl acetate and acrylonitrile/methyl acrylate copolymers are used as the acrylic polymer. |
| priorityDate | 1971-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.