Abstract: The present invention is directed to a primer composition, comprising: (a) metal oxide nanoparticles surface-modified with an organofunctional silane moiety having a specific functionality, (b) an organic polymer; and (c) one or more solvents; wherein the composition comprises less than 4 wt % of water, based on the total weight of said primer composition. The composition produces films having excellent optical and adhesion characteristics, and excellent weatherability and thermal stability.

Abstract: Disclosed herein is a primer composition comprising an inorganic UV absorbing agent and a polymer selected from (i) a copolycarbonate, and (ii) a polyurethane obtained by reaction of a polyisocyanate and a copolycarbonate diol. Also disclosed is a coated article comprising a polymeric substrate, a primer layer disposed on at least one surface of said substrate, and an abrasion-resistant layer disposed on said primer layer, where the primer layer is made from the primer composition of the invention.

Abstract: Disclosed herein is a primer composition comprising an inorganic UV absorbing agent and a polymer selected from (i) a copolycarbonate, and (ii) a polyurethane obtained by reaction of a polyisocyanate and a copolycarbonate diol. Also disclosed is a coated article comprising a polymeric substrate, a primer layer disposed on at least one surface of said substrate, and an abrasion-resistant layer disposed on said primer layer, where the primer layer is made from the primer composition of the invention.

Abstract: The present invention relates to thermal cure silicone hardcoat compositions that are prepared with an aqueous/organic solvent silicone dispersion, partial organoalkoxysilane condensate and silylating agent. The novel heat curable silicone hardcoats are useful on various substrates with improved flexibility.

Abstract: The present invention relates to thermal cure silicone hardcoat compositions that are prepared with an aqueous/organic solvent silicone dispersion, partial organoalkoxysilane condensate and silylating agent. The novel heat curable silicone hardcoats are useful on various substrates with improved flexibility.

Abstract: An improved method for concentrating solids in silicone resin coating compositions is provided, said compositions comprising higher solids levels that are often needed in order to increase the thickness of the final coated film when applied to a given substrate.

Abstract: A method for the synthesis of high molecular weight poly(imide)s comprising coupling poly(imide) precursors having complementary functional groups and a weight average molecular weight of less than about 50,000 Daltons to form high molecular weight poly (imides)s having a weight average molecular weight greater than 50,000 Daltons.

Abstract: A method of repairing or modifying a turbine blade wherein damage or erosion has occurred to the end part of a turbine blade or it is required to remove the end part so as to improve the efficiency of the blade as a whole comprises the steps of removing the damaged end part or a part requiring replacement, securing a new piece of material to the blade which may or may not be partly preformed, and after securing of the new piece of material to the blade and heat treatment processes, subsequently working the new piece of material so that it conforms to the desired shape. The working of the new piece of material only after securement and heat treatment ensures that discontinuities such as lacing wire holes, shroud band apertures, tenons etc.