ICE RELEASE SURFACES

An ice release system comprises a substrate and an ice release coating on said substrate, said system remaining effective for multiple ice release events. The coating comprises a two component polymeric mixture. The first component of the coating is so firmly bonded to the substrate that it cannot be completely removed with a solvent and the second component is substantially completely compatible with the polymeric material of the first component and is homogenously dissolved or dispersed therein. The second component is substantially unbonded to the substrate, is not water leachable, has a glass transition temperature (Tg) less than 0 DEG C and is sufficiently viscous that the second component will not exhibit substantial flow from the mixture over a vertically arranged coated substrate. In an ice release event a surface portion of the second component is removed with the ice, whereafter migration of the second component in the mixture re-establishes homogeneity to form a new surface portion of the second component.