Propylene-based polymer, articles, and process for producing same

Abstract

Disclosed are propylene-based polymer compositions and processes for producing same. Polymerization with an improved catalyst composition provides a propylene-based polymer with improved stiffness.

1 . A composition comprising:
 a propylene-based polymer; and   a substituted 1,2-phenylene aromatic diester with the structure (II):   
       
         
           
           
               
               
           
         
         wherein R 1 -R 14  are the same or different; and 
         at least one of R 1 -R 4  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof. 
       
     
     
         2 . The composition of  claim 1  wherein each of R 5 -R 14  is hydrogen. 
     
     
         3 . The composition of  claim 1  wherein at least one of R 1 -R 4  and at least one of R 5 -R 14  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof. 
     
     
         4 . The composition of  claim 1  wherein at least one of R 1 -R 4 , at least one of R 5 -R 9 , and at least one of R 10 -R 14  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof. 
     
     
         5 . The composition of  claim 1  wherein each of R 1 , R 3  and R 4  is hydrogen and R 2  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         6 . The composition of  claim 5  wherein each of R 5 -R 14  is selected from the group consisting of hydrogen, a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         7 . The composition of  claim 1  wherein each of R 2 , R 3  and R 4  is hydrogen and R 1  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         8 . The composition of  claim 7  wherein at least one of R 5 -R 14  is selected from the group consisting of hydrogen, a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         9 . The composition of  claim 1  wherein R 1  is a methyl group and each of R 5 -R 14  is hydrogen. 
     
     
         10 . The composition of  claim 1  comprising an aliphatic mono-carboxylic acid ester. 
     
     
         11 . A composition comprising:
 a propylene-based polymer; and   a substituted 1,2-phenylene aromatic diester with the structure (II):   
       
         
           
           
               
               
           
         
         wherein R 1 -R 14  are the same or different; and 
         at least two of R 1 -R 4  are selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof. 
       
     
     
         12 . The composition of  claim 11  wherein each of R 1  and R 3  is selected from the group consisting of a C 1 -C 8  alkyl group, a C 3 -C 6  cycloalkyl group, a substituted C 3 -C 6  cycloalkyl group, and combinations thereof. 
     
     
         13 . The composition of  claim 11  wherein each of R 1  and R 3  is an isopropyl group. 
     
     
         14 . The composition of  claim 11  wherein each of R 2  and R 4  is hydrogen and each of R 1  and R 3  is selected from the group consisting of substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         15 . The composition of  claim 11  wherein each of R 5 -R 14  is hydrogen. 
     
     
         16 . The composition of  claim 11  wherein at least one of R 5 -R 14  is selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a halogen, and combinations thereof. 
     
     
         17 . The composition of  claim 11  comprising an aliphatic mono-carboxylic acid ester. 
     
     
         18 . A composition comprising:
 a propylene-based polymer; and   a substituted 1,2-phenylene aromatic diester with the structure (II):   
       
         
           
           
               
               
           
         
         wherein R 1 -R 14  are the same or different; 
         at least three of R 1 -R 4  are selected from the group consisting of a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof. 
       
     
     
         19 . The composition of  claim 18  wherein each of R 5 -R 14  is hydrogen. 
     
     
         20 . The composition of  claim 18  comprising an aliphatic mono-carboxylic acid ester.