http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-701983-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d647e846645953f86e9ba89e7f5ead3d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F12-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-266 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-26 |
| filingDate | 1951-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1954-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-701983-A |
| titleOfInvention | Improvements in and relating to phenyltrifluoroethylene and polymers therefrom |
| abstract | Polymers are obtained by polymerizing phenyltrifluoroethylene alone or in admixture with other polymerizable materials such as styrene, vinyl acetate, methyl methacrylate and ethyl acrylate, with the aid of heat and/or light. The polymers may be formed in the presence of polymerization catalysts, e.g. ozone, ozonides, barium or sodium peroxide, acetyl, lauroyl or stearoyl peroxide, benzoyl or acetyl benzoyl peroxide, perborates, persulphates or perchlorates, ditertiary butyl peroxide, tertiary butyl hydroperoxide and boron trifluoride. The catalyst concentration may be within the range from 0.1 to 4 per cent. by weight of the total mixture. The preferred temperature for carrying out the polymerization is from room temperature (20 DEG to 30 DEG C.) to temperatures above 100 DEG C., e.g. 130 DEG C. In the example phenyltrifluoroethylene is polymerized in the presence of benzoyl peroxide by heating at 70/75 DEG C. for 72 hours.ALSO:Phenyltrifluoroethylene is prepared by passing a mixture of benzene and chlorotrifluoroethylene in the vapour phase through a heated zone maintained at a temperature of 350 to 700 DEG C. The reaction may be carried out in the presence of any of the following catalysts: an acidic substance such as boron trifluoride, substances with high specific surfaces such as activated carbon, substances which form free radicals such as lead tetramethyl, metals and alloys such as copper and bases such as ammonia. In the example, phenyltrifluoroethylene is formed in the presence of boron trifluoride. |
| priorityDate | 1950-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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