Abstract: The invention relates to a method for coating a shaped component (3) having an inner side (12) and an outer side (9) with a first coating material on the inner side (12) and with a second coating material on the outer side (9), wherein a strip (13) at least of the outer side (9) remains uncoated in the region of a circumferential edge (6) that adjoins the inner side (12) and the outer side (9), and the first and second coating materials cannot be mixed with each other, in which method the component (3) is introduced into a holder and held fixed in its position there while the coating materials are applied one after the other by means of a spraying robot.

Abstract: A coating for permanent hydrophilization of surfaces and its use are provided. The coating is made of nano-scale particles having hydrophilic side chains, which can be sintered. The coating may be made of 10 to 90% inorganic structures, 5 to 70% hydrophilic side chains, and 0 to 50% organic side chains having functional groups.