Patent ID: 6384159
Filing Date: 2002-05-07
Classification: C08F,Y10S

Abstract:
A process to produce polyethylenes through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst supported by an organic polymer carrier, characterized by polymerization that is initiated throughi) a titanium amide catalyst on an organic polymer carrier with a) a partly chloromethylated styrene divinyl benzene copolymer with a divinyl benzene content of 1 to 45 percent by weight, a chlorine content of 5 to 23 percent by weight, a specific surface area of 5 to 1,000 m2/g, and a particle size of 50 to 3,000 &mgr;m as the organic polymer material b) a complex compound supported by the above organic polymer material, with the general formula of (RmMgX2âˆ’m)Â·(RnAlY3âˆ’n)pÂ·(XqTiL4âˆ’q)Â·EDr â€ƒwherein: R=alkyl, cycloalkyl, aryl, aralkyl, alkaryl, alkenyl X=halogen Y=hydrogen, halogen, alkoxy L=dialkylamido, dicycloalkylamido, diarylamido, diaralkylamido, dialkarylamido or mixed ED=organic compound acting as electron donor m=1 or 2 n=numerical value of 1 through 3 p=numerical value of 0.1 to 1 q=0, 1, 2 or 3 r=numerical value of 1 to 2 c) the conversion product of the complex compound supported by the organic polymer material of b) with a mixture of A) a compound of the general formula of XmTiY4âˆ’m â€ƒwherein X, Y=halogen, alkyl, aryl, X alkaryl, aralkyl, alkoxy, aroxy m=1, 2, 3 or 4 and B) a compound of the general formula of RnCX4âˆ’n â€ƒwherein R=hydrogen, alkyl, aryl, alkaryl, aralkyl, chloromethyl, dichloromethyl, trichloromethyl or partially halogenated alkyl X=halogen, alkyl, alkenyl, aryl, alkaryl, aralkyl, alkoxy, aroxy n=0, 1, 2 or 3 with a molar ratio of the compounds A) and B) in the range of 1:0.1 to 1:2 wherein the starting substrate for the compound supported by the organic polymer material at b) is made through intensive grinding and mingling of the organic polymer material with the transition metal compound below the glass transition temperature of the polymer under anaerobic conditions, and ii) a compound of the following general formula acting as an activator RmAlY3âˆ’m â€ƒwherein R=alkyl, cycloalkyl, aryl, alkaryl, aralkyl, alkenyl Y=hydrogen, halogen, alkoxy m=numerical value of 1 to 3.