http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-965606-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D125-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F236-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L9-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-56 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F236-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L9-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D125-10 |
| filingDate | 1962-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-965606-A |
| titleOfInvention | Improvements in or relating to copolymer emulsions |
| abstract | Copolymer emulsions having high pigment compatibility and good filler absorption power are obtained by polymerizing a mixture of (1) 25-60% by weight of a conjugated diene, (2) 2-20% by weight of acrylamide and/or an a -substitution product thereof and (3) 73-20% by weight of an aromatic monovinyl or monovinylidene compound, it being possible for up to 20% by weight of the aromatic monovinyl or monovinylidene compound to be replaced by another compound copolymerizable therewith. Suitable conjugated dienes are butadi-1, 3-ene, 2-methyl butadi-1, 3-ene, 2, 3-dimethyl-butadi-1, 3-ene, 2-chlorobutadi-1, 3-ene, 2, 3-dichlorobutadi-1, 3-ene and 2-cyanibutadi-1, 3-ene. The following are suitable a -substitution products of acrylamide:-methacrylamide, ethylacrylamide, a -dodecylacrylamide, a -chloroacrylamide, a -cyanoacrylamide and a -carboxyacrylamide. Suitable aromatic monovinyl or monovinylidene compounds are styrene, a -methylstyrene, vinyl toluene, 2-4 dimethyl styrene, 3, 5-dimethyl styrene and p-chloro-styrene. Examples of other compounds which can be polymerized with the aforementioned aromatic vinyl or vinylidene compounds and which can replace the former by up to 20% by weight are: acrylonitrile, a -chloroacrylonitrile acrylic acid, methacrylic acid, a -chloroacrylic acid, the alkyl esters of acrylic acid and of a -allyl-acrylic acids, N-alkyl and N,N-dialkyl-amides of acrylic acid and of a -alkyl acrylic acids, esters of maleic and fumaric acids, vinyl esters of carboxylic acids; unsaturated halogenated hydrocarbons and olefines; as well as mixtures thereof. It is also possible to introduce divinyl compounds or ethylene glycol dimethacrylate. These copolymerization components are preferably employed in an amount of from 0.1% to 10% by weight of the monomers. The polymerization of the monomers can be carried out as copolymerization or as graft copolymerization. Known anionic, cationic and non-nitric emulsifiers are employed in an amount of from 1-10% based on the weight of monomers. Protective tolloids may also be employed in an amount of up to 10% based on the weight of the monomers. Redox systems in an amount of from 0.05% to 5% by weight are used as catalysts. Known regulators and stabilizers may also be employed in amounts of from 0.05-3% by weight and 0.5 to 3% by weight respectively based on the weight of monomers. The emulsion copolymerization can be effected at pH values of from 1-12. If preferred copolymer emulsion is obtained by copolymerizing 25-60% by weight of butadiene, from 2-20% by weight of acrylamide and/or methacrylamide and from 73-20% by weight of styrene, it being possible for from 2-10% by weight of the styrene fraction to be replaced by an ester of acrylic acid or methacrylic acid with an alcohol containing 1-20 carbon atoms. Specification 900,591 is referred to. |
| priorityDate | 1961-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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