http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-439260-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6108c9a7f7a472c2db8923daca0ec8d6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L1-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L1-08 |
| filingDate | 1934-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1935-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-439260-A |
| titleOfInvention | Improvements in or relating to the production of artificial materials |
| abstract | Artificial filaments, foils, films, and like products coloured in dark shades are made by imparting the required shape to a solution comprising a cellulose ester or ether dissolved in a solvent medium and which contains a dyestuff of the Nigrosine or Induline type and effecting setting of the shaped solution. Thus filaments may be formed by extruding the solutions into a coagulating medium whether gaseous or liquid, e.g. into an p evaporative atmosphere. Fast black shades and a variety of deep shades may be obtained by topping with suitable colours. Since induline and nigrosine dyes have a corrosive action on metallic portions of the apparatus it is necessary to take special precautions, e.g. by using annealed or coated apparatus, when employing these dyes. By subjecting the dyestuff to the action of an alkali in a solvent for both dyestuff and alkali their corrosive action on spinnerets, pumps, &c. which contain copper, zinc or iron alloys may be reduced or eliminated. Water-soluble dyes may be prepared by subjecting the treated dyestuffs to sulphonation. The solutions may contain besides the dyestuff and the cellulose ester or ether, other ingredients, e.g. filling and effect materials, e.g. metal oxides, powdered metals, lamp-black or logwood pigment, fire retardants, e.g. b -chlornaphthalene and tricresyl phosphate, plasticizers, e.g. glycol and glycerol oleates and stearates, or lubricants, e.g. olive oil and mineral oil. Other dyestuffs, e.g. m-nitraniline yellow or 2 : 4-dinitrodiphenylamine may also be added. |
| priorityDate | 1933-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.