BigPatents India

A curable composition for use as a sealant, in which the curable composition comprises a silicone fluid in an amount from 80 wt% to 90 wt%, a vinyl group containing polyorganosiloxane in an amount from 10 wt% to 20 wt%, a hydrogen containing polysiloxane in an amount from 0.5 wt% to 2.0 wt%, and a hydrosilation photocatalyst in an amount from 5 ppm to 100 ppm. The sealant cures in 1 second to 20 seconds during reaction of the vinyl group containing polydiorganosiloxane and the hydrogen containing polysiloxane, by exposure to ultraviolet radiation, in the presence of the hydrosilation photocatalyst. The sealant has an adhesion force to plastic from 2.0 N/100mm to 4.0 N/100mm.