Silcolease® UV RCA 275 UV silicone CRA-minus release modifier is a 100% reactive release coating component based on epoxy-silicone copolymer technology. This release modifier has been very specifically designed for optimum surface activity and exhibits very low polarity and surface tension similar to high molecular weight dimethyl silicones.
When blended at levels of 1-6% into the Silcolease® UV POLY 200 UV silicone polymer release coating system, it effectively acts as a low release Controlled Release Additive (CRA-minus). Silcolease® UV RCA 275 modified silicone release chemistries result in smoother coatings with often dramatically reduced release zippiness against very aggressive adhesives. Rapid and stable cure with excellent anchorage to paper and film is achieved by simply passing the coating under high-intensity ultraviolet light (medium pressure mercury vapor bulbs).