Adhesion Promoter 946UV is kind of light yellow clear liquid, and it can be used to promote adhesion of adhesive tapes. It is direct reaction by synthetic resin with adhesive tapes to provide superior adhesion. It has advantages of high bonding, cold resistance, moisture resistance, high temperature resistance. 

A kind of chemical brightener has been added in Primer 946. After applying primer 946, it will convert invisible ultraviolet light to visible fluorescence on the surface of materials. Therefore, there are bright-colored blue and bright white within the primer coverage, it is easy to identify there is primer or there is not primer on the surface of material. It is equivalent to 3M 4298UV.