fillers rheological additives antioxidants bactericides fungicides corrosion inhibitors catalysts and uv stabilizers the present invention also relates to a process for the production of polyurethane based coating compositions in which ring opening products of carboxylic acid ester epoxides with dihydric or higher alcohols as reactive diluents inert solvents polymeric polyols and optionally typical additives are mixed with isocyanates more particularly the invention relates to a process for the production of polyurethane based coating compositions in which ring opening products of carboxylic acid ester epoxides with dihydric or higher alcohols as reactive diluents are mixed with inert solvents polymeric polyols and optionally typical additives the invention also relates to coating compositions containing ring opening products of carboxylic acid ester epoxides with dihydric or higher alcohols as reactive diluents inert solvents polymeric polyols isocyanates and optionally typical additives according to the invention coating compositions which contain the reactive diluent in a quantity of 1 to 99 by weight based on the total diluent content and the inert solvents in a quantity of 1 to 99 by weight and preferably 1 to 50 by weight based on the total diluent content are generally preferred various oleochemical polyols were tested for their suitability as reactive diluents in clear lacquers and finishing lacquers the trade name is followed in brackets by the abbreviations used in the examples the following products of henkel corp were used as the hydroxyl containing polyacrylates the weathering tests were carried out in a quv accelerated weathering tester astm g 53 77 for artificial weathering.