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According to Eastman Chemical Company’s technical study, depending on the specific performance demands of a given HMPSA application, it is now possible to provide substantial substitution of isoprene monomers in an adhesives formulation using a blend of the KRATON Polymers SIBS (styrene-isoprene-butadiene-styrene) block copolymer and SBS (styrene-butadiene-styrene) block copolymer. Proper blending of SIBS and SBS, combined with Eastman’s Piccotac 7590-N hydrocarbon resin, provides adhesive formulators with a cost-effective, viable alternative. Produced with the more readily available butadiene monomers, in some cases the new formulation can enhance overall performance of HMPSA’s.
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