http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-570329-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-22 |
| filingDate | 1943-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1945-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-570329-A |
| titleOfInvention | Improvements in or relating to the emulsion polymerisation and copolymerisation of methyl alpha-chloroacrylate |
| abstract | Methyl alpha-chloroacrylate is polymerized in emulsion at a temperature between the freezing point of the emulsion and 80 DEG C. The aqueous medium contains a dissolved salt of perdisulphuric acid and an "acid-stable" dispersing agent comprising a long chain acyclic hydrocarbon substituted with only one radical which is either -SO2OX or -OSO2OX where X is an alkali metal. "Acid-stable" refers to agents whose activity is unaffected in media of pH 3 to 5, e.g. excludes soaps. The process is equally applicable to the copolymerization of methyl a -chloroacrylate with one or more other polymerizable compounds which contain a single ethylenic linkage. As dispersing agents a list of long chain alkyl acid sulphates and sulphonates is given. The polymerization system may also contain inorganic salts, long chain primary alcohols, carbohydrate derivatives and polyvinyl alcohol. Polymerizable materials include esters of acrylic and methacrylic acids, (list); acrylo- and methacrylamides or mono-alkyl substitution products thereof; unsaturated ketones, e.g. methyl vinyl, phenyl vinyl and methyl isopropenyl ketones; and vinyl carboxylates, e.g. vinyl acetate, propionate and stearate. In examples the catalyst is ammonium perdisulphate and the dispersing agent sodium cetyl sulphate or the sodium salt of sulphonated paraffin oil, and the polymerization is described of methyl a -chloroacrylate alone or together with (1) methyl acrylate, (2) butyl methacrylate, (3) vinyl acetate, (4) diethyl itaconate, (5) furylethylene, and (6) unsymmetrical dichlorethylene. Specification 570,330 is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6884760-B1 |
| priorityDate | 1942-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.