Patent RU-94042464-A (RU)
Inventor: KASPAR EHVERTTS
IPC: C08F4/602
Filed: 1993-03-23
Abstract: FIELD: organometal chemistry. SUBSTANCE: invention is metallocene-base catalytic system for polymerization of alk-1-enes with 2-10 carbon atoms containing at least one metallocene complex and one oligomeric alumoxane compound as an active component. Metallocene complex is compound of the general formula (I)where: M - metal of III, IV or V secondary group of periodic system or metal taken from lanthanide group; X - fluorine, bromine, iodine, hydrogen, alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms or group ORin which Rmeans alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms, alkylaryl, aralkyl, fluoroalkyl or fluoroaryl, each with 1-10 carbon atoms in alkyl moiety and 6-20 carbon atoms in aryl moiety; n - valency of M with the deduction of number 2; R-R- hydrogen, alkyl with 1-10 carbon atoms, 5-7-membered unsubstituted cycloalkyl or cycloalkyl substituted with alkyl with 1-10 carbon atoms, aryl or aralkyl with 6-15 carbon atoms; two adjacent radical together can mean cyclic groups containing 4-15 carbon atoms, or group Si(R)where Rmeans alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms or cycloalkyl with 3-10 carbon atoms; Eand Eindependently each of other means groups Si(R), Ge(R), Sn(R)or C(R)-C(R)in which Rmeans alkyl with 1-10 carbon atoms, cycloalkyl with 3-10 carbon atoms or aryl with 6-15 carbon atoms. Oligomeric alumoxane compound - compound of the general formula (II)and (III)where R- alkyl with 1-4 carbon atoms; m - whole number 5-30, and a method of synthesis of metallocene complex above indicated general formula (I). Method of synthesis involves interaction of compound of the general formula (IV)where R-R,Eand Ehave above indicated values with metallization agent. Synthesized compound containing bis-metallized ligands is subjected for interaction with compound of the formula MXwhere M, X and n have above indicated values. Further object of invention is a method of synthesis of polymers of alk-1-enes with 2-10 carbon atoms by polymerization of parental alkene in the presence of catalytic metallocene-base system containing at least one metallocene complex and one oligomeric alumoxane compound as an active component. Process is carried out in the presence of catalytic system containing metallocene complex of the general formulawhere M - metal of III, IV or V secondary group of periodic system or metal taken from lanthanide group; X - fluorine, bromine, iodine, hydrogen, alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms or group -ORin which Rmeans alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms, alkylaryl, aralkyl, fluoroalkyl or fluoroaryl each with 1-10 carbon atoms in alkyl moiety and 6-20 carbon atoms in aryl moiety; n - valency of M with the deduction of number 2; R-R- hydrogen, alkyl with 1-10 carbon atoms, 5-7-membered unsubstituted cycloalkyl or cycloalkyl substituted with alkyl with 1-10 carbon atoms, aryl or aralkyl with 6-15 carbon atoms; two adjacent radicals together can mean cyclic groups containing 4-15 carbon atoms, or group Si(R)in which Rmeans alkyl with 1-10 carbon atoms, aryl with 6-15 carbon atoms or cycloalkyl with 3-10 carbon atoms; Eand Eindependently each of other means groups Si(R), Ge(R), Sn(R)or C(R)-C(R)in which Rmeans alkyl with 1-10 carbon atoms, cycloalkyl with 3-10 carbon atoms or aryl with 6-15 carbon atoms, and oligomeric alumoxane compound of the general formula (II)and (III)where R- alkyl with 1-4 carbon atoms; m - whole number 5-30. EFFECT: improved method of synthesis.