Polyolefin resin modifier, polyolefin resin composition and oriented polyolefin film

Abstract

A crystalline polyolefin resin composition contains: (A1) 4 to 20 wt % of a polyolefin resin component having an elution temperature of 36 to 104° C. and a molecular weight of 100,000 to 1,000,000 measured by TREF/SEC; and (B) 96 to 80 wt % of a crystalline polyolefin resin component different from the above component (A1), the wt % being based on the total weight of the components (A1) and (B).

What is claimed is:  
     
         1 . A modifier for a crystalline polyolefin resin, which modifier contains a component having an elution temperature of 36 to 104° C. and a molecular weight of 100,000 to 1,000,000 measured by TREF/SEC in an amount of more than 20 wt % to 100 wt %.  
     
     
         2 . The modifier of  claim 1  which has an elution temperature of 40 to 88° C.  
     
     
         3 . The modifier of  claim 1  which contains a component having an elution temperature of 0° C. or less measured by TREF/SEC in an amount of 5 wt % or less.  
     
     
         4 . The modifier of  claim 1  which has a melt flow rate of 1 to 20 g/10 min.  
     
     
         5 . The modifier of  claim 1  which has a molecular weight distribution represented by the ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn) of 1.5 to 15.  
     
     
         6 . A method of producing the polyolefin resin of  claim 1  comprising the step of polymerizing an olefin in the presence of a catalyst comprising a metallocene compound and aluminoxane compound, or a melallocene compound and non-coordination ionized compound.  
     
     
         7 . A modifier for a crystalline polyolefin resin, which modifier contains a component having an elution temperature of more than 116° C. and a molecular weight of 10,000 to 100,000 measured by TREF/SEC in an amount of 20 to 100 wt %.  
     
     
         8 . The modifier of  claim 7  which has a melt flow rate of 5 to 100 g/10 min.  
     
     
         9 . The modifier of  claim 7  which contains a component having an elution temperature of 0° C. or less measured by TREF/SEC in an amount of 5 wt % or less.