http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1126188-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_408341c6c2a3523a9fa21745326605d2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02 |
| filingDate | 1966-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97f2a90ce547e1f452f8412b2bc145cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a024e4c3c81920b6212b4f3be20f0af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ff7c54de4d5b302da250bfc6bbcbe9e |
| publicationDate | 1968-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1126188-A |
| titleOfInvention | Modification and control of ethylene copolymerisation |
| abstract | 1,126,188. Olefin polymerization. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 23 Aug., 1967 [2 Sept., 1966], No. 39374/66. Heading C3P. The degree of polymerization of α-olefin polymers prepared using the catalyst systems defined in Specifications 1,077,397 and 1,113,898 (both Division C3), is regulated by the addition of a modifier comprising a lower alcohol, an ether, water, hydrogen, a halohydrocarbon or a zinc alkyl. From 10 to 2000 p.p.m. w./w. on solvent of methyl or ethyl alcohol may be added, this amount being sufficient for the mole ratio of transition metal to alcohol to be between 25 and 0À1: 1. From 5 to 100 p.p.m. of an ether, such as diethyl ether, diphenyl ether, dibenzyl ether or anisole, may be added, this amount being sufficient for the mole ratio of transition metal to ether to be from 20 to 0À5: 1. From 5 to 100 p.p.m. of water may be added, this amount being sufficient for the mole ratio of transition metal to water to be from 12À5 and 0À125 to 1. Up to 3À5 moles per cent of hydrogen, based on the total monomer feed, may be added. From 3-100% w./v. of halohydrocarbon, such as mono-, polyaliphatic or aromatic halohydrocarbons, may be added. Zinc diethyl, zinc dibutyl or zinc diphenyl may be added in amounts sufficient for the mole ratio of zinc alkyl to organo lithium compound to be from 0À1 to 10: 1. In the examples, ethylene, propylene and optionally dicyclopentadiene are polymerized in hexane/ cyclohexane solvent using as catalyst system aluminium bromide, lithium butyl and one of tri-n-butyl vanadate, vanadium oxytrichloride, vanadyl tributoxide, titanium tetrabutoxide and zirconium tetrabutoxide, with the addition, as a modifier, of one of the following-diethyl ether, dibenzyl ether, diphenyl ether, anisole, ethyl alcohol, water in benzene, hydrogen added to the monomer solution, 1,2-dichloroethane, chloroform, bromoform, methyl iodide, n-butyl chloride, chlorobenzene, dichlorobenzene and zinc diethyl. |
| priorityDate | 1966-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.