Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Radial styrene block copolymer (Dyne® 57, Dynasol)
A
Linear styrene block copolymer (Solprene® 4301, Dynasol)
A
Tackifier (polyterepene)
Resulting Properties
The formulation supplied above should provide equal or better performance properties when compared to a sprayable polychloroprene adhesive with equivalent viscosity but at a solids content of 12%. Both formulations above have very high solids content, and the second formulation is toluene free.
SBC based adhesives have a good combination of low cost, adhesion, physical properties, and processing characteristics. There is a growing use of SBC adhesives and sealants in construction projects for adhering wall panels and plywood subflooring. The SBS copolymers are particularly well suited for this application because of their high uncured strength as well as low cost, adhesion, and good physical properties and processing characteristics.