This product is a kind of colorless, transparent,viscous liquid,widely usded as tackifier or viscosity index improver. Polyisobutylene (Conventional Type)TrademarkIndex UNITHRD-03HRD-10HRD-13HRD-24MnAverage Molecular Weight Mn 3001000±201300±202400±50 Appearance Transparent, without Any Additional Substances Transparent, without Any Additional Substances Transparent, without Any Additional ...