A basic understanding of block copolymers is crucial in the study of adhesive formulation. In particular, styrene block copolymers (SBC) are a vital component in a wide range of hot melt adhesives. SBC’s have a characteristic structure that makes them ideally suited for many adhesive applications. The selection of a tackifier for a block copolymer depends on the composition of the midblock. SIS block copolymers are the most readily tackified and are most compatible with C5, hydrogenated C5, and hydrogenated C9 tackifiers. It exhibits medium molecular weight and strength, easy processing, medium melt viscosity and good solubility in common non-polar adhesive solvent.
Adhesive /Asphalt modification /Plastic modification