A function f, analytic in the unit disk E and given by , f(z)=z+∑k=2∞anzk is said to be
in the family Kn if and only if Dnf is close-to-convex, where Dnf=z(1−z)n+1∗f, n∈N0={0,1,2,…}
and ∗ denotes the Hadamard product or convolution. The classes Kn are investigated and some
properties are given. It is shown that Kn+1⫅Kn and Kn consists entirely of univalent functions.
Some closure properties of integral operators defined on Kn are given.