Metallocene compound

Abstract

The present disclosure relates to a novel metallocene compound. The metallocene compound according to the present disclosure may be used for the preparation of an olefin-based polymer, may have excellent ability, and may produce an olefin-based polymer having a relatively high molecular weight compared with the case of using a catalyst composition having a similar structure due to the structural and electrical steric hindrance effect.

The invention claimed is: 
     
       1. A metallocene compound having the following Chemical Formula 1: 
       
         
           
           
               
               
           
         
         wherein in Chemical Formula 1, 
         M is a Group 4 transition metal; 
         B 1  is carbon, silicon, or germanium; 
         Q 1  and Q 2  are the same as or different from each other, and are each independently hydrogen, halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, a C7 to C20 arylalkyl group, a C1 to C20 alkoxy group, a C2 to C20 alkoxyalkyl group, a C3 to C20 heterocycloalkyl group, or a C5 to C20 heteroaryl group; 
         X 1  and X 2  are the same as or different from each other, and are each independently halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group, a nitro group, an amido group, a C1 to C20 alkylsilyl group, a C1 to C20 alkoxy group, or a C1 to C20 sulfonate group; 
         C 1  has the following Chemical Formula 2a, and C 2  has any one of the following Chemical Formula 2b, Chemical Formula 2c, Chemical Formula 2d, and Chemical Formula 2e; 
       
       
         
           
           
               
               
           
         
         wherein, in Chemical Formulae 2a, 2b, 2c, 2d, and 2e, 
         B 2  is a single bond or a C1 to C3 alkylene group, 
         * is a site to which M or B1 of Chemical Formula 1 is connected, 
         R 1  to R 5  are the same as or different from each other, and are each independently hydrogen, halogen, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, an C1 to C20 ether group, a C1 to C20 alkoxy group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, or a C7 to C20 arylalkyl group, 
         R 6  to R 32  are the same as or different from each other, and are each independently hydrogen, halogen, a C1 to C20 alkyl group, a C1 to C20 alkoxy group, a C6 to C20 aryl group, a C7 to C20 alkylaryl group, or a C7 to C20 arylalkyl group, 
         R′ 1  to R′ 3  are the same as or different from each other, and are each independently hydrogen, halogen, or a C1 to C20 alkyl group. 
       
     
     
       2. A method of preparing an ethylene copolymer using the metallocene compound of  claim 1 . 
     
     
       3. The metallocene compound of  claim 1 , wherein R 1  to R 5  in the Chemical Formulae 2a, 2b, 2c, 2d, and 2e are each independently hydrogen, halogen, a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, an ethylene group, a propylene group, a butylene group, a phenyl group, a benzyl group, a naphthyl group, a halogen group, an ether group, a dimethyl ether group, a methoxy group, an ethoxy group, or a tert-butoxyhexyl group, and
 R 6  to R 22  and R 24  to R 32  are each independently hydrogen, halogen, a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, an ethylene group, a propylene group, a butylene group, a phenyl group, a benzyl group, a naphthyl group, a halogen group, an ether group, a trimethylsilyl group, a triethylsilyl group, a tripropylsilyl group, a tributylsilyl group, a triisopropylsilyl group, a trimethylsilylmethyl group, a dimethyl ether group, tert-butyldimethylsilyl ether group, a methoxy group, an ethoxy group, or a tert-butoxyhexyl group. 
 
     
     
       4. A method of preparing an ethylene copolymer using the metallocene compound of  claim 3 . 
     
     
       5. The metallocene compound of  claim 1 , wherein Q 1  and Q 2  in the Chemical Formula 1 are each independently hydrogen, a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, a methoxymethyl group, a tert-butoxymethyl group, a 1-ethoxyethyl group, a 1-methyl-1-methoxyethyl group, a tert-butoxyhexyl group, a tetrahydropyranyl group, or a tetrahydrofuranyl group. 
     
     
       6. A method of preparing an ethylene copolymer using the metallocene compound of  claim 5 . 
     
     
       7. The metallocene compound of  claim 1 , wherein the compound of Chemical Formula 2a is any one of the following structural formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
       8. A method of preparing an ethylene copolymer using the metallocene compound of  claim 7 . 
     
     
       9. The metallocene compound of  claim 1 , wherein the compound of Chemical Formula 2b is any one of the following structural formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
       10. A method of preparing an ethylene copolymer using the metallocene compound of  claim 9 . 
     
     
       11. The metallocene compound of  claim 1 , wherein the compound of Chemical Formula 2c is any one of the following structural formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
       12. A method of preparing an ethylene copolymer using the metallocene compound of  claim 11 . 
     
     
       13. The metallocene compound of  claim 1 , wherein the compound of Chemical Formula 2d is any one of the following structural formulae: 
       
         
           
           
               
               
           
         
       
     
     
       14. A method of preparing an ethylene copolymer using the metallocene compound of  claim 13 . 
     
     
       15. The metallocene compound of  claim 1 , wherein the compound of Chemical Formula 2e is any one of the following structural formulae: 
       
         
           
           
               
               
           
         
       
     
     
       16. A method of preparing an ethylene copolymer using the metallocene compound of  claim 15 .