The invention comprises a process for the preparation of a coating, adhesive,
film or sheet. In this process a mixture of a polyisocyanate functional, a polyepoxide
functional, a polyanhydride functional or a polyketone functional compound or polymer
and a compound containing reactive hydrogen, in which the compound containing reactive
hydrogen is used in a material which is non-reactive towards the compound containing
reactive hydrogen which mixture is not or low reactive at ambient conditions and
high reactive under selected conditions, is applied onto a substrate at ambient
temperature, followed by reacting the above compounds at elevated temperatures.
At ambient temperature said compound containing reactive hydrogen is a solid material,
a powder, a granule, a flake or grind or a mixture thereof which is preferably
ground. The invention comprises further the coating mixtures to be used in the
process and the coatings, coated substrates, adhesives, films, sheets, impregnated
substrates, synthetic leathers, inmould coatings, coated leathers, coated polyvinylchlorides,
coated non-wovens, coated coagulated polyurethane substrates, breathable coated
substrates, obtained by applying the process.
