Abstract:
A process for the manufacture of pulverizable, thermosetting coating agents comprising mixtures of acrylate resins containing hydroxyl groups and blocked isocyanates. The blocked isocyanates are di- or polyisocyanates blocked with a lactam having about 412 carbon atoms in the ring. The blocked isocyanates have melting points of about 60*-150* C., and are used in an amount of about 0.1-0.9 equivalents of isocyanate groups based on the hydroxyl group content. The process is useful for preparing agents useful in coating compositions.
Abstract:
Acrolein together with acrylic acid as an optional reactant is polymerized in a heated, moving aqueous hydrogen peroxide solution by gradually adding monomers and n-dodecyl mercaptan to the solution. The resultant polymer exhibits improved biological degradability making it especially useful in detergents.