Novel aromatic polysulfide and an asphalt composition containing the same

Abstract

The present invention relates to a novel aromatic polysulfide and an asphalt composition containing the same, and more particularly, to a novel aromatic polysufide having repeating units of the following formula (I), an asphalt composition, an asphalt paving composition, an adhesion promoter and an UV absorber containing the same: The asphalt paving composition of this invention exhibits excellent adhesiveness to aggregate component and better water resistance, and renders the temperature susceptibility less sensitive, thereby greatly improving durability.

What is claimed is:  
     
         1 . A novel aromatic polysulfide having repeating units of the following formula (I):  
       
         
           
           
               
               
           
         
         wherein R 1 , R 2  and R 3  are the same or different from each other, and independently represent H, unsubstituted alkyl group, substituted alkyl group, unsubstituted aryl group or substituted aryl group; x is an integer of 1-4; and n is an integer of 2-10,000.  
       
     
     
         2 . The novel aromatic polysulfide according to  claim 1 , wherein the average molecular weight of the aromatic polysulfide is from 5,000 to 20,000.  
     
     
         3 . A method for preparing a novel aromatic polysulfide represented by the following scheme (I), comprising the step of reaction between phenol or derivatives thereof and sulfur chloride species:  
       
         
           
           
               
               
           
         
         wherein R 1 , R 2  and R 3  are the same or different from each other, and independently represent H, unsubstituted alkyl group, substituted alkyl group, unsubstituted aryl group or substituted aryl group; x is an integer of 1-4; and n is an integer of 2-10,000.  
       
     
     
         4 . The method according to  claim 3 , wherein the sulfur chloride species is sulfur monochloride.  
     
     
         5 . The method according to  claim 3 , wherein the method further comprises the step of adding an alkyl halide or aryl halide.  
     
     
         6 . An adhesion promoter applied to polymer resin, which comprises a novel aromatic polysulfide having repeating units of the following formula (I):  
       
         
           
           
               
               
           
         
         wherein R 1 , R 2  and R 3  are the same or different from each other, and independently represent H, unsubstituted alkyl group, substituted alkyl group, unsubstituted aryl group or substituted aryl group; x is an integer of 1-4; and n is an integer of 2-10,000.  
       
     
     
         7 . An UV absorber comprising a novel aromatic polysulfide having repeating units of the following formula (I):  
       
         
           
           
               
               
           
         
         wherein R 1 , R 2  and R 3  are the same or different from each other, and independently represent H, unsubstituted alkyl group, substituted alkyl group, unsubstituted aryl group or substituted aryl group; x is an integer of 1-4; and n is an integer of 2-10,000.