Abstract: Provided are processes for preparing compositions useful in photopolymerizable compositions, which processes comprise:A. reacting a polyether diol and an acrylic acid in about equal molar proportions; andB.1. reacting a polyether diol and an acrylic acid in about equal molar proportions and2. reacting the product of step B1, a hydroxyalkylacrylate and an organic diisocyanate in about equal molar proportions. Also provided are the products of these processes. These products are useful in photopolymerizable compositions which may typically contain, in addition to said products, N-vinyl-2-pyrrolidone and a photoinitiator.