http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1181958-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-907 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G61-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F32-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F32-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G61-08 |
| filingDate | 1969-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1550133b396d7cc56f9c64f78daf4b71 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ead492e1cb884593d402f4c120f0f010 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3629e8068edee356bf9d161584e0063b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13da041f13fff7aee1081e948bbb8ff9 |
| publicationDate | 1970-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1181958-A |
| titleOfInvention | A process for the production of Polymers of Cyclopentene |
| abstract | 1,181,958. Cyclopentene polymers. FARBENFABRIKEN BAYER A.G. 29 Jan., 1969 [24 Feb., 1968], No. 4828/69. Heading C3P. Polymers of cyclopentene are prepared by the solution polymerization of cyclopentene, optionally with an additional monomer, in the presence of a mixed catalyst which is prepared by adding tungsten hexachloride to the polymerization solution at above 0 C., before or after the addition of cyclopentene-2-hydroperoxide, and then after the colour has changed from blue or greenish-blue to red-brown an aluminium trialkyl or aluminium alkylhalide is added at - 30 to +30 C., and the polymer is isolated from the solution. The additional monomer may be a diolefin having a molecular weight of 93-132. A preferred copolymer is prepared from cyclopentene and dicyclo pentadiene and this copolymer, compared with a polypentenomer, has the following I.R. bands: 3030 cm.<SP>-1</SP>, 1440 cm.<SP>-1</SP>, 1358 cm.<SP>-1</SP>, 1280 cm.<SP>-1</SP> and 730 cm.<SP>-1</SP>. In the examples, cyclopentene is polymerized using tungsten hexachloride, cyclopentene-2- hydroperoxide and aluminium tri-isobutyl, the reaction being terminated by the addition of a methanol-aminoethanol mixture, precipitation of the polymer being effected with a methanol solution containing 3,3<SP>1</SP>-dimethyl-5,5<SP>1</SP>-di-tert.- butyl - 6,6<SP>1</SP> - dihydroxydiphenylmethane. The polymer has a high trans content. Further examples illustrate the copolymerization of cyclopentene with dicyclopentadiene, norbornylene, norbornadiene, cyclo-octadiene and bicyclo-2-octene. The polymers contain a high proportion of trans-bonds. |
| priorityDate | 1968-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.