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Lithium Butadiene Rubber (LiBR)

SYNTECA® LiBR – Low-cis Lithium Polybutadiene Rubber

SYNTECA® LiBR is a low-cis polybutadiene rubber (PBR) produced with a lithium catalyst.
It is mainly used for plastic modification, enhancing the impact strength and processability of High-Impact Polystyrene (HIPS) and Acrylonitrile-Butadiene-Styrene (ABS).
New lithium polybutadiene grades for tire applications are also in development, targeting improved filler interaction, low hysteresis, and balanced dynamic performance.

SYNTECA<sup>®</sup> LiBR – Low-cis Lithium Polybutadiene Rubber

Synthos produces SYNTECA® LiBR using an anionic polymerization process with a lithium catalyst. The result is a linear polymer with narrow polydispersity, high purity, and low gel content – ensuring stable performance and easy processing.

For plastic modification, SYNTECA® LiBR delivers:

  • Improved impact resistance and surface gloss in HIPS and ABS
  • Consistent quality in polymer blending and compounding
  • Light color and high transparency in end-use applications
  • Excellent solubility and compatibility with styrenic polymers

Next-generation LiBR materials in development for tire tread compounds combine the advantages of lithium-based polymers with optimized filler dispersion and reduced rolling resistance, supporting the industry’s drive toward lower-carbon mobility.




            

          

        

      

    

  
 
   
  

  
Commercial Grades

  

    
      

        Type  
        Catalyst 
        Antioxidant 
        MOONEY VISCOSITY ML (1+4) 100 ⁰C
        CIS STRUCTURE CONTENT (%)
        Solution viscosity (5% in Styrene @25 ⁰C (mPa.s))
        Applications
      

    

    
                        

            SYNTECA® 50L
            Lithium
            Non-staining
            50
            38
            -
            Tires, technical rubber goods
          

                  

            SYNTECA® 50LP
            Lithium
            Non-staining
            50
            38
            180
            Plastics modification (HIPS)
          

                  

            SYNTECA® 60LP
            Lithium
            Non-staining
            65
            38
            250
            Plastics modification (HIPS)
          

                  

            SYNTECA® 40LPS
            Lithium
            Non-staining
            40
            38
            90
            Plastics modification (HIPS/ABS)
          

                  

            SYNTECA® 35LPS
            Lithium
            Non-staining
            40
            38
            40
            Plastics modification - high gloss level
          

                  
  


  

  

    
Technical and safety data sheets (TDS and SDS) are available on request, following the completion of the contact form.

  

  

 
    

    

              
Catalogue

      
            
    

  

    

  
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