http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-441868-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_798f3caa292684e1560945c2ba4126a8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M11-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06M11-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M11-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06M11-46 |
| filingDate | 1934-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1936-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-441868-A |
| titleOfInvention | Improvements in the treatment of artificial silk |
| abstract | Artificial silk having an insoluble tin compound fixed therein is produced by subjecting artificial silk impregnated with a water soluble tin compound to the action of a gaseous reagent yielding a water-insoluble compound with the salt of tin. Suitable water-soluble tin compounds are stannic chloride, stannic thiocyanate, or stannic chloro-thiocyanate. Suitable gaseous reagents are steam and/or gaseous ammonia or other volatile base such as methylamine or ethylamine. An alkaline tin compound, e.g. an alkali metal stannate may be used with carbon dioxide, hydrochloric acid gas or acetic acid vapour as the fixing agent. The reagents may be applied by bath methods, padding, spraying or printing, excess material being removed after a bath treatment, e.g. by hydro extraction with or without drying. Wetting agents or swelling agents for the material may be included in the solution or the materials may be pretreated with them. Examples of suitable swelling agents are given. The tin compound may itself have swelling properties, e.g. stannic thiocyanate or chlorothiocyanate. The fixing atmosphere may be produced by evaporating an aqueous solution of a volatile base, or the base itself may be injected into a steam chamber. Fixation is preferably carried out at high temperatures, e.g. 95--105 DEG C., if desired under pressure. The process may be continuous the materials passing straight from an impregnating bath or padding mangle with or without hydro-extraction and drying to the fixing chamber. The fixing time is short, e.g. of the order of 2--5 minutes. After fixation the material may be washed in water, e.g. at 60 DEG C., then in cold water and finally scoured in hot dilute soap solution. After fixation the materials may be treated with a water-soluble phosphate or silicate, e.g. cellulose ester materials may be treated with a solution of sodium silicate or tri-sodium phosphate to partially saponify the ester. In an example cellulose acetate woven fabric is padded with a cold aqueous 20--25 per cent solution of stannic chloride crystals and about 10 per cent of acetic acid. The material is partially dried at about 50 DEG C. and then passes in about 4 minutes through a steam chamber at about 100 DEG C., aqueous ammonia solution being injected into the steam chamber at such a rate that the issuing fabric is substantially neutral. The weighted material is rinsed in water and scoured with aqueous soap solution. |
| priorityDate | 1934-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.