http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1483587-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c3b30f00ff0e683c87de93edfd9f1fd5 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2357-00 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J39-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-286 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J39-20 |
| filingDate | 1974-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1483587-A |
| titleOfInvention | Porous polymers and their production |
| abstract | 1483587 Production of porous polymer beads PORTALS WATER TREATMENT Ltd 21 Oct 1974 [13 Nov 1973] 52651/73 Headings C3C and C3P Polymer beads of predetermined porosity and matrix expansion are prepared by polymerization of a mono-olefinic monomer (optionally with up to 16% diolefinic monomer) in the presence of 10-70% of good solvent (defined) and 5-30% of good non-solvent (defined), the polymerization being conducted in suspension in a continuous phase which does not dissolve monomer, polymer, solvent or non-solvent. Specified good solvents are benzene, toluene, chlorobenzene, carbon tetrachloride, tetrachloroethane and trichloroethylene and water. Specified good non-solvents are polypropylene glycol, polyethylene glycol and polyisobutylene. Specified monomers are methyl(meth)acrylate, ethyl acrylate, acrylonitrile, vinyl acetate and styrene optionally with divinyl ketone, vinyl methacrylate, divinyl oxalate, ethylene glycol dimethacrylate and divinyl benzene, with all of which water can be employed as continuous phase; and the sodium salt of vinyl sulphonic acid, with which the continuous phase may be heptane or paraffin oil. Initiators, e.g. benzoyl peroxide and azobisisobutyronitrile may be employed, as may dispersing agents, e.g. polyvinyl alcohol, sodium polyacrylate, hydroxymethyl cellulose or calcium phosphate, and when the continuous phase is organic, an oilsoluble dispersion stabilizer may be used. After polymerization, solvent and non-solvent may be removed, e.g. by distillation and the beads dried; where desired they may be converted to ion-exchange resins by e.g. sulphonation or chloromethylation and amination. The examples describe the production of styrene/ divinyl benzene comonomer beads subsequently reacted with chloromethyl ether and trimethylamine or with sulphuric acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013007799-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8940172-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4668709-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4612334-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4606958-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4611014-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102011107197-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3290111-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107417838-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2008064525-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4536521-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2155481-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018041877-A1 |
| priorityDate | 1974-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 86.