Title of Invention

METHOD FOR DOSING CATALYSTS

Abstract

To meter catalysts into a reactor, the catalyst is firstly suspended in a hydrocarbon in a reservoir and the suspension obtained is kept in motion by stirring and then fed via a three-way metering valve and an ejector into the actual reactor, wherein the suspension containing the catalyst is firstly discharged from the reservoir by means of a pump and continuously circulated by returning the suspension via the three-way metering valve within a closed piping system to the reservoir, subsequently setting a pressure in the reservoir which is from 0..1 to 30 bar higher than the pressure in the reactor and then continuously introducing the suspension into the reactor via a flow meter which controls the three-way metering valve and via a downstream ejector by pulse operation of the now open three-way metering valve.

Full Text

Metering of catalysts metering even in the case of small amounts. The development of metalloceiia catalysts may also made it necessary for fully or partiaily active catalysts to be introduced into the process in a safe and reliable manner. Current and established techniques of metering catalysts are I, e -di-tert-butyl-1, 3, B-hexatriene, 1 , 5, 9-cyclodecatriene, r e :n d suitable. Preference is given tc using those titanium compounds ethalic esters in which X and Y are each a C1-C6-alkoxy radica.l. 30%, in particular in the range from 10 to 30%. suitable inorganic oxides is from C to 6% by weight. Preference subsituted by C1-C10-alkyl, a C1-C10-aryl group or a 1 I I generally substituted, cyclopentadienyl group and to further compounds. These are usually prepared by reacting pulverulent reaction bed is kept in motion by means of a vertical firstly setting, by means of the three-way metering valve, a addition of regulators customary in polymerization technology, triethylsluminum and organic silane compounds were used as the data in Table I chat the reaction parameters (of. standard suspension of the titanium-containing solid component a) in white polymers obtained, determined by sieve andlysis.. We claim: mass flow mater 13. A method of metering catalysts into a reactor substantially as herein described with reference to the accompanying drawing. 14. An apparatus for metering catalysts substantially as herein described with reference to the accompanying drawing.

Documents:

1195-chenp-2003 power of attorney.pdf

1195-chenp-2003 abstract granted.pdf

1195-chenp-2003 claims granted.pdf

1195-chenp-2003 description (complete) granted.pdf

1195-chenp-2003 drawing granted.pdf

1195-chenp-2003-abstract.pdf

1195-chenp-2003-assignement.pdf

1195-chenp-2003-claims.pdf

1195-chenp-2003-correspondnece-others.pdf

1195-chenp-2003-correspondnece-po.pdf

1195-chenp-2003-description(complete).pdf

1195-chenp-2003-drawings.pdf

1195-chenp-2003-form 1.pdf

1195-chenp-2003-form 3.pdf

1195-chenp-2003-form 5.pdf

1195-chenp-2003-form 6.pdf

1195-chenp-2003-pct.pdf