http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-837542-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_271ff2b95ea5a4ce96726222ebc1b918 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F218-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F218-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-18 |
| filingDate | 1955-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14ef4b4faa0a2ceecab5b8264ad6b8b0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2544744e73011047defd76f432734bfc |
| publicationDate | 1960-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-837542-A |
| titleOfInvention | Improvements in or relating to the manufacture of polymers in aqueous dispersion |
| abstract | Unsaturated esters are polymerized or copolymerized in dispersion in aqueous media containing a small amount of an alkali metal vinyl sulphonate, e.g. sodium vinyl sulphonate, but free from colloids, emulsifying and dispersing agents, by heating in the presence of a catalyst whilst maintaining the dispersion by mechanical agitation. Specified esters are vinyl acetate-vinyl benzoate and methacrylic esters. The catalyst may be benzoyl peroxide or a redox system. The molecular weights of the polymers may be controlled by the proportion of catalyst used or by adding an aldehyde, e.g. acetaldehyde, paraldehyde or propionaldehyde. The aqueous phase may be separated from the polymer and reused, e.g. after "topping-up" with the vinyl sulphonate. The monomers may be added to the aqueous phase gradually during the polymerization. The polymers give clear solutions, e.g. in benzene, from which films may be cast. |
| priorityDate | 1955-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.