Polyisobutylene can be used as either a base polymer or as a modifier in a variety of adhesive formulations. These resins have similar properties to natural rubber except that their aging properties are significantly better. The natural tack, stability, and light color of polyisobutylene resins make them ideal in many applications.
RESULTING PROPERTIES
PIB resins are used in adhesive formulations generally because of their resistance to aging and to attack by chemicals. They are used in pressure sensitive adhesives for technical and medical applications, such as surgical tapes, sealing tapes, insulating tapes, masking tapes, and anticorrosion tapes.
Many pressure sensitive tape products are formulated with polyisobutylene resins as the base polymer. These products remain permanently tacky. The table above provides a formulation for a solvent borne pressure sensitive label adhesive. PIB pressure sensitive adhesives can either be applied via solvent solution or hot melt application due to their permanent state of tack.
