http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-576657-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_35455e9b7cdd1d5d1359bf05f5fbe8a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6806f317666d7532f35b91734b33c4bb http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4e53921d557469dadda9c60827a2a860 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2327-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01B3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L25-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L27-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01B3-441 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-003 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C44-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L25-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C67-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L27-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M2-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-26 |
| filingDate | 1943-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1946-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-576657-A |
| titleOfInvention | Improvements relating to the manufacture of micro-porous material |
| abstract | Microporous material is produced by producing a dough by incorporating in a copolymer of a vinyl halide and another ethylene substitution product of the CH2=C< type, fine particles of a material which can be subsequently removed therefrom and a solvent for the copolymer which acts as a temporary plasticizer thereof, the resulting dough being then formed into desired shapes, the solvent removed and the solid dough treated for the removal of the particles so as to leave micropores in the solid copolymer. Suitable copolymers are those of vinyl chloride with vinyl acetate, ethyl acrylate and vinylidene chloride. The viscosity of the dough may be modified by the addition of a compatible liquid acting as a diluent for the solvent. Specified materials, fine particles of which may be added, are starch and dextrin; specified solvents are methyl ethyl ketone and methyl cyclohexanone; and xylene is specified as a diluent. The dough may be shaped by moulding, extrusion or rolling and the solvent removed by evaporation. The starch or dextrin is swollen by treatment with hot water or hot caustic alkali and then removed by treating with hot sulphuric acid, or with an enzyme, e.g. malt diastase at 60 DEG C., or with hot water for some time. The shaped dough is then washed in water and dried, and it may be treated with a wetting-out agent such as a highly sulphonated oil before the drying. Wood flour or the lignin bodies obtained from waste sulphite liquors in paper-making plants may be incorporated in the copolymer which may also have added a little carbon black. The final products may be used as diaphragms or separators for electrical accumulators. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2794753-A |
| priorityDate | 1942-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.