http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1282897-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cff62ee19588f053fe1f229df4e6c756 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-907 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-58 |
| filingDate | 1969-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39eacf3a44f335c40d907d6cb0e7dc9f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14f0fb491653f0e9e8f1aa6711564ec4 |
| publicationDate | 1972-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1282897-A |
| titleOfInvention | Ziegler-type polymerisation catalyst for the catalytic production of olefin polymers |
| abstract | 1282897 Olefin polymerisation catalysts MITSUBISHI PETROCHEMICAL CO Ltd 18 July 1969 [20 July 1968] 36250/69 Heading B1E [Also in Division C3] An olefin polymerisation catalyst is prepared by a process which comprises reacting (i) a titanium compound, (ii) an organometallic compound of a metal selected from Groups I, II and III and (iii) at least one silicon compound having the general formula SiX n Y 4-n wherein n is 0, 1, 2, 3 or 4, the or each X is a halogen atom and the or each Y is a hydrogen atom, an alkyl group or an alkoxy group, with the proviso that n is not O when there is a hydrogen atom bonded to the silicon atom, thereby to form a hydrocarbon-insoluble reaction product (1) which thereafter is mixed with (2) an organometallic compound of a metal selected from Groups I, II and III. The titanium compound (i) may be a halide, for example a tetrahalide. The organometallic compound (ii) used in the preparation of the reaction product (1) and/or the organometallic compound (2) may be an organoaluminium compound having the general formula R m AlZ 3-m wherein m is 1, 1.5, 2 or 3, the or each R is an alkyl, aryl, aralkyl, alkenyl or cycloalkyl group and the or each Z is a halogen atom; exemplified organoaluminium compounds are triethylaluminium, diethylaluminium chloride, ethylaluminium sesquichloride, di-n-propylaluminium chloride and di-iso-butylaluminium chloride. Exemplified silicon compounds (iii) are silicon tetrachloride, trichlorosilane, methyltrichlorosilane, dimethyldichlorosilane, trimethylchlorosilane, tetramethylsilane, ethyltrichlorosilane, methyltriethoxysilane and dimethyldiethoxysilane. Prior to mixing with the organometallic compound (2), the reaction product (1) may be subjected to treatment to remove therefrom excess organometallic compound (ii) or reaction product thereof and/or to heat treatment in an inert atmosphere at a temperature of from 60 to 200‹C for at least one hour. Examples relate to the preparation of catalysts by reacting, at -5‹C in heptane under a nitrogen atmosphere, titanium tetrachloride, diethylaluminium chloride and a silicon compound, heattreating the resulting solid reaction product at 155‹C under a nitrogen atmosphere and thereafter mixing the heat-treated reaction product with diethylaluminium chloride, the silicon compound being either silicon tetrachloride (Examples 1, 2, 12 and 13) or trichlorosilane (Examples 3, 4 and 5) or methyltrichlorosilane (Examples 6 and 7) or ethyltrichlorosilane (Example 8) or tetramethylsilane (Example 9) or trimethylchlorosilane (Example 10) or a mixture of silicon tetrachloride and dimethyldiethoxysilane (Example 11); comparison examples relate to the preparation of catalysts in similar manner except that the reaction product (1) either is prepared in the absence of silicon compound (Example A) or is titanium trichloride alone (Example B). |
| priorityDate | 1968-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.