http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1133867-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04650c4315071ee8af7d26e3441a53b1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F218-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F218-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-22 |
| filingDate | 1966-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1133867-A |
| titleOfInvention | Production of improved vinyl acetate copolymer emulsions |
| abstract | 1,133,867. Preparation of vinyl acetate copolymer emulsions. CELANESE CORP. 26 May, 1966 [4 June, 1965], No. 23553/66. Heading C3P. Vinyl acetate copolymer emulsions - are obtained by initially polymerizing vinyl acetate with minor amounts of one or more ethylenically unsaturated comonomers in an aqueous medium containing a surfactant comprising a major proportion of a polyether having at least four ether linkages, starch or a water-soluble cellulose derivative as protective colloid and a water-soluble free-radical polymerization catalyst, and continuing the polymerization by introducing additional monomer and catalyst until an emulsion containing more than 55% of polymer is formed, an additional quantity of surfactant being added before the last addition of monomer, and a further quantity of catalyst alone is finally added and the catalyst-containing emulsion is maintained at an elevated temperature until a reduction in viscosity of the emulsion is achieved. The emulsions may be incorporated in paint compositions. In the examples vinyl acetate, ethyl acrylate and di-(2- ethylhexyl)-maleate or dioctyl maleate are copolymerized using a surfactant mixture comprising nonylphenylpolyethylene glycol ether and nonylphenoxypoly (ethyleneoxy) ethanol, hydroxyethyl cellulose and a defoamer blend, the initiators being potassium persulphate, hydrogen peroxide, sodium chlorate, sodium persulphate and ammonium persulphate. In Example VI a composition is prepared comprising a vinyl acetate-ethyl acrylate-dioctyl maleate copolymer emulsion, methyl cellulose, 2,2,4 - trimethylpentanediol - monoisobutyrate, potassium tripolyphosphate, TiO 2 , CaCO 3 , water, propylene glycol, and phenyl mercuric acetate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4267090-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4409355-A |
| priorityDate | 1965-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.