Asadi and Zohrevand (2007). On the dynamic cumulative residual entropy. J. Statist. Plann. Inference, 137, 1931–1941] define the decreasing dynamic cumulative residual entropy (DDCRE) class of life distributions, some properties of the DDCRE class are studied. Navarro et al. (2010). Some new results on the cumulative residual entropy. J. Statist. Plann. Inference, 140, 310–322] further investigate this class, they get some results concerning the relations between the DDCRE class and other classes of distributions. In the present paper some characterization properties of the DDCRE class are investigated, closure and reversed closure properties of this class are obtained.