Abstract: The present invention relates to an organopolysiloxane material which is cured rapidly by irradiating it with radiation such as ultraviolet rays, electron beam and X-rays to provide a film having good characteristics, which can be readily produced synthetically and which is stable, as well as the material's cured releasing film. The material is obtained by the reaction of (A), an organic silicon compound having a specific formula and having at least one amino group, and (B), an acrylic compound having at least two acrylate groups.