POLYSILOXANE BASED INTUMESCENT COATING COMPOSITION

The present invention relates to a new polysiloxane based intumescent coating composition comprising a) a polysiloxane based binder system comprising i) one or more epoxy-functional polysiloxane; and b) one or more catalyst. Said a) polysiloxane based binder system may further comprise ii) one or more amino-functional polysiloxane. The invention further relates to the use of the coating composition of the invention for application on the surface of a substrate. The invention also relates to a substrate, preferably a steel substrate having on the surface a coat obtained from the coating composition of the invention. The invention also relates to a kit of parts for preparation of a polysiloxane based intumescent coating composition.