At the K 2016 Trade Fair for Rubber and Plastics, WACKER, the Munich-based chemical company, will present LUMISIL^® 590 und LUMISIL^® 591, two highly transparent LED encapsulants. They have a refractive index of 1.53 which boosts the efficiency of the lighting unit. They also protect the LED chip from damage and corrosive gases which prolongs its service life.