Processed minerals in this class and mineral products in this class including surface modified minerals, such as alumina trihydrate, processed mineral fiber, talc, barytes, which have been chemically modified by addition of an organic coupling agent(s) in order to improve the properties of the minerals, for use as polymer fillers in plastics, nylon, rubber, polyester, phenolic molding compounds, resins, polyurethane, epoxy, adhesives, ceramics, printing inks and products thereof and in the production of paints and other coatings