http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-472193-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_445a797690bdb3709f7c1a0a64853ba2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7dbac0828d78b917f46815b347c12747 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af7f942dd7adbf47aa84e56ca000dc5f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2321-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L21-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L21-00 |
| filingDate | 1936-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1937-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-472193-A |
| titleOfInvention | Improvements in or relating to the production of porous compositions |
| abstract | Porous hard rubber is produced by incorporating sulphur with a p rubber composition in excess of that required to form hard rubber and after vulcanization removing the excess free sulphur with perhaps other ingredients of the mix. The amount of sulphur varies in examples from 4 to 5 or more times the amount of rubber. The rubber is microporous and the process may be applied jointly with other processes for making porous rubber as, e.g. vulcanization of a wet mix, the incorporation of fibres or threads, wet or hydrated fillers, or gas bubbles, as by blowing or frothing. The sulphur solvent may be carbon disulphide, benzene, white spirit or alkali hydroxide. In an example a 2 per cent solution of sodium thiosulphate is used as a lubricant for a vulcanizing mould. Articles such as diaphragms or tubes for electrical, diffusion, or filtration purposes may be made of the porous ebonite so produced. |
| priorityDate | 1936-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.