http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-535094-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_798f3caa292684e1560945c2ba4126a8 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M2200-40 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D01F2-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F2-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D5-12 |
| filingDate | 1939-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1941-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-535094-A |
| titleOfInvention | Improvements in the stretching of artificial filaments, ribbons and like materials |
| abstract | 535,094. Artificial filaments &c. DREYFUS, H. Sept. 27, 1939, No. 26738. [Class 2 (ii)] Artificial filaments, yarns, ribbons, strips, and like materials having a basis of an organic, derivative of cellulose are subjected to a stretching operation while under the influence of an aqueous emulsion of an organic solvent or swelling agent for the cellulose derivative, e.g., methylene chloride, ethylene chloride, or chloroform. The disperse phase in the emulsion may consist entirely of the water-immiscible swelling agent or it may be a solution of the swelling agent in a water insoluble liquid such as benzene, toluene, xylene, benzine, petrol ether, kerosene, carbon tetrachloride, trichlorethylene, or perchlorethylene. The emulsions may be prepared with the aid of soaps such as alkali metal and ammonium soaps, and ethanolamine and other organic soaps, particularly soaps of higher fatty acids, sulphonated fatty alcohols, alkylated naphthalene sulphonic acids, e.g., cetyl naphthalene sulphonic acid, and the product obtained by sulphonating a mixture of naphthalene and castor oil. The stretching may be effected at ordinary or elevated temperatures and pressures. The materials may be stretched in hank form, or while travelling between stretching rollers. The emulsion may be applied by dipping, or spraying, or by application from the surface of a roller which dips into a bath of the emulsion. The stretching increases the tenacity of the materials. To improve the extensibility the stretched materials may be subjected to the action of shrinking agents and preferably allowed to shrink. Shrinking may take place continuously with the stretching operation. The materials treated may be of cellulose acetate or other cellulose ester or ether. In an example, dryspun cellulose acetate yarn is withdrawn from bobbins and passed to two successive sets of three rollers, the second roller of each set being disposed below the level of the first and third. The lower roller of each set is immersed in a mixture of methylene chloride and petroleum dispersed in water with the aid of ammonium stearate. The yarn is passed over and between the rollers and is then passed through the air to a draw roller which stretches it about 100 per cent. The yarn passes around rollers immersed in water containing ammonium stearate, then through a bath of water, and a pair of nip rollers and it is then dried. Specifications 389.823, and 525,484 are referred to. |
| priorityDate | 1939-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.