Solucryl 661 Acrylic UCB Chemicals Acrylics/ Acrylates ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) Acrylic solution. 2 component. Used in protective films. It has following advantages: adhesion level can be modulated excellent removability from a wide variety of surfaces aggressive tack very high cohesion 2-component acrylic solution. Used in protective films. Provides good removability from a wide variety of surfaces. Offers aggressive tack and high cohesion.