http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-282790-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_529dc2643b15d00fee2b8289c36083e6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F2-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F2-28 |
| filingDate | 1927-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1929-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-282790-A |
| titleOfInvention | Process for the manufacture of threads, ribbons, films and the like from solutions of cellulose esters or cellulose ethers |
| abstract | 282,790. Ruth-Aldo Co., Inc., (Assignees of Barthelemy, H. L.). Dec, 28, 1926, [Convention date]. Cellulose esters and ethers, processes for making filaments and films from.-Filaments, films &c. formed from a solution in an organic solvent of a cellulose ester such as acetyl cellulose, formylcellulose or nitrocellulose, or of a cellulose ether, are coagulated by means of an aqueous solution which contains an emulsifying- agent such as ammonium or alkali metal salt of one or more of the higher fatty acids, such as oleic, stearic, palmitic, and ricinoleic, or of the sulphonated fatty acids such as sulphopalmitic acid and sulphoricinoleic acid, or Twitchell's reagent, decoctions of panama wood or quillaya. egg yolk, caseinates of ammonia, alkalies or alkaline earths, gum tragacanth, and ternary mixtures of alkali carbonates, phosphates, borates &c., water, and a higher fatty acid. Improved results are obtained by the addition to the bath of the following substances which mix or emulsify therein :- (1) alcohols, such as ethyl and butyl alcohols, glycol, glycerine, and cyclohexanol; (2) hydrocarbons, such as decane, tridecane, hexadecane, toluene, xylene, tetrahydronaphthalene, decalin, terpenes, polyterpenes, and mineral oils; (3) fatty acids of high molecular weight, and their esters such as methyl oleate and stearate, and ethyl oleate; (4) emulsifiable animal and vegetable oils. By lowering the surface tension of the bath, the diffusion of the solvent therein is facilitated and the filaments are more easilv maintained separate, while at the same time the threads are more perfectly lubricated as compared with the known processes for spinning artificial silk and artificial wool. By a suitable arrangements of the apparatus, the solvent may be continuously recovered from the bath, which is then returned for re-use. In an example, a solution of acetyl nitrocellulose in acetone is extruded into a bath composed of an emulsion of a 50 per cent solution of ammonium oleate, neatsfoot oil, and heavy paraffin oil. |
| priorityDate | 1926-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.