http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PT-88935-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e5302e08e56037ff7bc5c9b6fcc29f9 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate | 1988-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9211964e386ab4c9e2ee564146d0ba6f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91b5a645dce703a9e8d37e4004e0da86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1379604e513010b412a7f657c1ae3f3 |
| publicationDate | 1995-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PT-88935-B |
| titleOfInvention | METHOD FOR REDUCING SHEET FORMING DURING POLYMERIZATION OF ALPHA-OLEFINS |
| abstract | A method of reducing sheeting during polymsn. of alpha-olefins (I) is a low pressure fluidised bed reactor utilising titanium or vanadium based cpds. as catalysts together with alkyl aluminium cocatalysts, comprises: introducing water into the reactor in a sufficient amt. to maintain the electrostatic levels at the site of possible sheeting without substantially altering the effectiveness of the catalysts. Specifically, the water is introduced into the reactor by passing a pressurised inert gas, esp. nitrogen, at a controlled rate of flow through a temp. controlled container contg. water, directing the gas contg. added water into a mixt. contg. ethylene, and subsequently introducing the water/ethylene mixt. into the reactor. The flow rates of nitrogen and ethylene, and the water temp. are controlled and determined responsive to static levels in the reactor. The water content is 0.1-2 ppm by vol. w.r.t. ethylene. The flow rate of nitrogen is varied between 0-11 lbs/hr. for an ethylene feed of 0-50,000 lbs/hr. The temp. of the water in the container is 10-40 deg.C. |
| priorityDate | 1988-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.