http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2152936-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-054 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2301-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-28 |
| filingDate | 1985-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ca4f571dba4fc332065c0a8ae21e3bf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25a6830dfa5522cedefc3bfdbf0ef813 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c245c0129f1bafa74031ea1f91a067f2 |
| publicationDate | 1985-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2152936-A |
| titleOfInvention | Porous spherical cellulose acetate particles |
| abstract | Porous, spherical particles consist substantially of cellulose acetate, having an acetylation degree of 49 to 60% (i.e. an esterification degree of 2.0 to 2.8), a particle diameter of 0.05 to 10 mm, a sphericity of at least 0.7, a pore volume of at least 0.4cc/g and a collapsing strength of at least 9 kg or higher. The particles are made using a dope comprising a solution formed by dissolving a cellulose acetate of the above degree of esterification in an acetic acid/water (80/20 to 90/10, by weight) solvent so that the concentration of the cellulose acetate is 25+/-7 wt.%, feeding said dope through a supply pipe to a coagulation bath comprising an acetic acid/water (30/70 to 42/58, by weight) solvent and having a temperature of 40+/-5 DEG C; operating an agitator having blades passing near a discharge port on the end of said supply pipe; effecting precipitation and granulation while adding water so that the acetic acid to water ratio of the coagulation bath may be maintained at a substantially constant value during said operation; centrifugally separating precipitate particles from the solution; washing these particles with water and drying the particles. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11685793-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4968350-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3042925-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013016982-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0363549-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8808011-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03004534-A1 |
| priorityDate | 1984-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.