Patent ID: 8716414
Filing Date: 2014-05-06
Classification: C08F

Abstract:
1. A method for preparing a polyolefin having a density of 0.850 to 0.915 g/cc, comprising a step of polymerizing olefin monomers at 130° C. to 200° C. in the presence of a mixed metallocene catalyst composition which comprises: a first metallocene catalyst including a compound of the following Formula 1 in an amount greater than or equal to 80 mol % and less than 100 mol %; and a second metallocene catalyst including one or more selected from the group consisting of compounds of the following Formulae 2 to 4 in an amount greater than 0 mol % and less than or equal to 20 mol %: wherein R1 and R2 are each independently hydrogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, a silyl, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, or a metalloid of a Group 4 metal substituted with a hydrocarbyl; R1 and R2 or two R2s are optionally connected to each other by an alkylidene containing an alkyl having 1 to 20 carbon atoms or an aryl having 6 to 20 carbon atoms to form a ring; R3, R3′, and R3″ are each independently hydrogen, a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms, an aryloxy having 6 to 20 carbon atoms, or a substituted or unsubstituted amino group; two or more of R3, R3′, and R3″ are optionally connected to each other to form an aliphatic or aromatic ring; CY1 is a substituted or unsubstituted aliphatic or aromatic ring, in which CY1 is substituted with a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms, an aryloxy having 6 to 20 carbon atoms, or a substituted or unsubstituted amino group; and if CY1 is substituted with multiple substituents, two or more of the substituents are optionally connected to each other to form an aliphatic or aromatic ring; M is a Group 4 transition metal; Q1 and Q2 are each independently a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, a substituted or unsubstituted amino group, or an alkylidene having 1 to 20 carbon atoms, wherein M2 is a Group 4 transition metal; Cp and Cp′ are each independently any one functional group selected from the group consisting of cyclopentadienyl, indenyl, 4,5,6,7-tetrahydro-1-indenyl, and fluorenyl, and they are optionally substituted with a hydrocarbon having 1 to 20 carbon atoms; R4 and R5 are each independently hydrogen, an alkyl having 1 to 20 carbon atoms, an alkoxy having 1 to 10 carbon atoms, an aryl having 6 to 20 carbon atoms, an aryloxy having 6 to 10 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an alkylaryl having 7 to 40 carbon atoms, an arylalkyl having 7 to 40 carbon atoms, an arylalkenyl having 8 to 40 carbon atoms, or an alkynyl having 2 to 10 carbon atoms; Q3 is a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 10 carbon atoms, an alkylaryl having 7 to 40 carbon atoms, an arylalkyl having 7 to 40 carbon atoms, an aryl having 6 to 20 carbon atoms, a substituted or unsubstituted alkylidene having 1 to 20 carbon atoms, a substituted or unsubstituted amino group, an alkylalkoxy having 2 to 20 carbon atoms, or an arylalkoxy having 7 to 40 carbon atoms; and n is 1 or 0, wherein M3 is a Group 4 transition metal; R5 and R6 are each independently hydrogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an alkylaryl having 7 to 40 carbon atoms, an arylalkyl having 7 to 40 carbon atoms, a silyl, a methoxymethyl, a t-butoxymethyl, a tetrahydropyranyl, a tetrahydrofuranyl, a 1-ethoxyethyl, a 1-methyl-1-methoxyethyl, or a t-butyl; A is any one selected from the group consisting of an alkylene having 2 to 4 carbon atoms, an alkyl silicon or germanium having 1 to 4 carbon atoms, and an alkyl phosphine or an amine having 1 to 4 carbon atoms; Q4 and Q5 are each independently a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 10 carbon atoms, an alkylaryl having 7 to 40 carbon atoms, an arylalkyl having 7 to 40 carbon atoms, an aryl having 6 to 20 carbon atoms, a substituted or unsubstituted alkylidene having 1 to 20 carbon atoms, a substituted or unsubstituted amino group, an alkylalkoxy having 2 to 20 carbon atoms, or an arylalkoxy having 7 to 40 carbon atoms, and m is an integer of 0 to 10, wherein M4 is a Group 4 transition metal; R7 and R8 are each independently an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, a cycloalkyl having 3 to 30 carbon atoms, an aryl having 6 to 30 carbon atoms, an alkylaryl having 7 to 30 carbon atoms, an arylalkyl having 7 to 30 carbon atoms, or an arylalkenyl having 8 to 30 carbon atoms; Q6 and Q7 are each independently a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an aryl having 6 to 30 carbon atoms, an alkylaryl having 7 to 30 carbon atoms, or an arylalkyl having 7 to 30 carbon atoms, and Q6 and Q7 are optionally connected to each other to form a hydrocarbon ring having 1 to 20 carbon atoms; B is an alkylene having 1 to 4 carbon atoms, a dialkyl silicon, germanium, an alkyl phosphine, or an amine, and acts as a bridge between two cyclopentadienyl ligands by a covalent bond; a and a′ are each independently a positive integer of 0 or more; o is an integer of 0 to 2 and p is an integer of 0 to 3; Y is a hetero atom of oxygen (O), sulfur (S), nitrogen (N), or phosphorus (P); C is hydrogen or alkyl having 1 to 10 carbon atoms.