Selection of an adequate mineral oil for a Styrenic Block Copolymer (SBC)-based adhesive is very important. Although most mineral oils look alike, they impart very different compatibilities to the SBC used and will greatly affect both adhesion and aging performances of Hot Melt Pressure Sensitive Adhesives (HMPSAs).
Mineral oils are a necessary component for most SBC-based HMPSAs. Below are some of the major advantages contributed by mineral oils.
1. Significantly reduce the viscosity for easy mixing and processing.
2. Lower the hardness of adhesive for better deformation and wetting.
3. Decrease glass transition temperature (Tg) to improve low temperature resistance.
4. Lower the total raw material cost of HMPSAs. Among all used ingredients in most SBC-based HMPSAs, mineral oil is normally the cheapest raw material.
Mineral oils are extremely complicated mixtures including various ratios (contents) of the following major hydrocarbon species… Read Article >>
Selection of Mineral Oils for Hot Melt Pressure Sensitive Adhesives
- by Pierce Covert, Glue Machinery Corporation