Olefin Polymerisation Catalyst Containing a Cycloakane Dicarboxylate as Electron Donor

Abstract

A catalyst system useful in polymerizing olefins comprising a solid, hydrocarbon-insoluble catalyst component containing magnesium, titanium and halogen and an internal or external electron donor comprising a substituted hydrocarbyl four to eight-membered cycloalkane dicarboxylate wherein the substituents are positioned on the cycloalkane to place the dicarboxylate groups into adjacent conformational positions and wherein the substitutes contain 1 to 20 carbon atoms and may be joined to the cycloalkane structure to form a bicyclo structure.

1 . A solid, hydrocarbon-insoluble, catalyst component containing magnesium, titanium, and halogen further containing an internal electron donor comprising a substituted hydrocarbyl 4-8 membered cycloalkane dicarboxylate wherein the substituents are positioned on the cycloalkane to place the dicarboxylate groups into conformational proximity positions and wherein the substituents contain 1 to 20 carbon atoms and may be joined to the cycloalkane structure to form a bicyclo structure. 
     
     
         2 . The catalyst component of  claim 1  wherein the internal electron donor is 
       
         
           
           
               
               
           
         
       
       in which one X and one Y are carboxylate (CO 2 R) groups, wherein R is selected from lower alkyl groups containing 1 to 20 carbon atoms; R1-R8 are selected from bulky and non-bulky alkyl or substituted alkyl groups to produce a ring conformation that places the carboxylate groups into proximity; and remaining the X and Y groups are selected from hydrogen and methyl, and provided two of the R1-R8 groups may be connected to form a bicyclo structure. 
     
     
         3 . The catalyst component of  claim 1  wherein the internal electron donor is 
       
         
           
           
               
               
           
         
       
       wherein R is selected from lower alkyl groups containing 1 to 20 carbon atoms, R1 and R4 are selected from bulky groups sufficient to place the carboxyl groups into conformational proximity positions, and R2 and R4 are selected from hydrogen and methyl. 
     
     
         4 . The catalyst component of  claim 1  wherein the internal electron donor is trans-di-n-butyl-4,5-di-isopropylcyclohexane trans-dicarboxylate or trans-diisopropyl 4,5-di-t-butylcyclohexane trans-dicarboxylate. 
     
     
         5 . The catalyst component of  claim 1  wherein the internal electron donor is 
       
         
           
           
               
               
           
         
       
       wherein R is selected from lower alkyl groups containing 1 to 20 carbon atoms, R1, R3, and R6 are selected from bulky groups sufficient to place the carboxyl groups into conformational proximity positions, and R2, R4, and R5 are selected from hydrogen and methyl. 
     
     
         6 . The catalyst component of  claim 1  wherein the internal electron donor is 
       
         
           
           
               
               
           
         
       
       wherein R is selected from lower alkyl groups containing 1 to 20 carbon atoms. 
     
     
         7 . The catalyst component of  claim 1  wherein the internal electron donor is 
       
         
           
           
               
               
           
         
       
       wherein R is selected from lower alkyl groups containing 1 to 20 carbon atoms. 
     
     
         8 . The catalyst component of  claim 1  wherein R is ethyl, propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, hexyl, 2-ethylhexyl, or octyl. 
     
     
         9 . The catalyst component of  claim 1  wherein R contains 3 to 8 carbon atoms. 
     
     
         10 . The catalyst component of  claim 1  wherein R is ethyl, propyl, isopropyl, n-butyl, isobutyl, or s-butyl. 
     
     
         11 . The catalyst component of  claim 1  at least one bulky substituent group contains 3 to 20 carbon atoms. 
     
     
         12 . The catalyst component of  claim 1  at least one of isopropyl, isobutyl, t-butyl, s-butyl, isopentyl, isohexyl, or 2-ethylhexyl. 
     
     
         13 . The catalyst component of  claim 1  at least one of isopropyl, isobutyl, t-butyl, or s-butyl. 
     
     
         14 . The catalyst component of  claim 1  at least one bulky substituent group contains a hetero atom. 
     
     
         15 . A olefin polymerization catalyst system comprising a solid, hydrocarbon insoluble component containing magnesium, titanium, and halogen and an internal electron donor compound, an aluminum alkyl compound, and an external electron donor compound comprising a substituted hydrocarbyl 4-8 membered cycloalkane dicarboxylate wherein the substituents are positioned on the cycloalkane to place the dicarboxylate groups into conformational proximity positions and wherein the substitutes contain 1 to 20 carbon atoms and may be joined to the cycloalkane structure to form a bicyclo structure.