http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-667291-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_11265794a3cf424181e96e5f75bb410b http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_445a797690bdb3709f7c1a0a64853ba2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2a2d066e214e390e31c8ef234dc9a25a http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_faee6b84333bc8e36be71cbab473470b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F36-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04 |
| filingDate | 1949-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-667291-A |
| titleOfInvention | Manufacture of novel polymeric products containing rubber |
| abstract | Polymeric products containing rubber in partly combined form are obtained by copolymerizing in aqueous media containing rubber dispersed therein, styrene or an alkyl or halogen nuclear substitution derivative thereof and at least an equal amount of a hydrocarbon having conjugated double bonds or a halogen substitution derivative thereof. Suitable mixtures comprise 5 to 50 per cent by weight of rubber with the ratio of styrene or derivative to the compound containing conjugated double bonds varying from 1 : 9 to 2 : 3. Examples of styrene derivatives are nuclear substituted methyl-, monochloro- and dichlorostyrenes. Butadiene, isoprene, dimethyl butadiene and chloroprene are specified conjugated compounds. Natural rubber latex is preferred but may be replaced by a gutta percha or balata latex, by an artificial dispersion of raw or reclaimed rubber or by a dispersion of synthetic rubber comprising a polymer or copolymer of a conjugated diene. Polymerization is preferably effected in a redox system, specified catalysts being ammonium and alkali metal persulphates and perborates, hydrogen peroxide, benzoyl peroxide, cumene hydroperoxide, tert.-butyl hydroperoxide and cyclohexanone hydroperoxide. Suitable reducing agents for persulphates or perborates are water-soluble salts of oxyacids of sulphur, e.g. sodium sulphite, hydrosulphite or thiosulphate; for hydrogen peroxide and organic hydroperoxides, sugars, e.g. dextrose, preferably with a salt of an oxyacid of sulphur and, as a promoter, a salt of a metal of varying valency, e.g. ferrous sulphate or pyrophosphate or copper sulphate. Emulsifying agents such as sodium oleate and salts of long chain alkyl sulphonic acids and of sulphonated or sulphated aliphatic long chain alcohols are generally used and surface tension regulators, e.g. aliphatic alcohols of 5 to 8 carbon atoms, may be added. The mixture is agitated and kept at a temperature of between 10 DEG and 60 DEG C. depending on the catalyst. The rubber may be added stepwise. The resulting latex may be creamed, coagulated and milled, preferably with a stabilizer, e.g. b -phenyl naphthylamine, and can be compounded with sulphur, carbon black, mercaptobenzothiazole, diphenyl guanidine and stearic acid and moulded or vulcanized to produce articles such as shoe soles, tiles and sheets. Alternatively, the latex, with or without the admixture of a natural or synthetic rubber latex, may be compounded and used for textile impregnation or the manufacture of dipped goods or sponge. Specification 652,401 is referred to. |
| priorityDate | 1949-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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