| abstract |
Concrete roof tile, which is coated with a film of a copolymer, optionally filled with additives and / or pigments, which (a) 0.03 to 2% by weight of tin in the form of a polymerizable organotin compound, (b) 0.5 to 5% by weight % (Meth) acrylic acid, (meth) acrylamide and / or vinyl sulfonic acid and (c) 0.1 to 5% by weight of monomers containing carbonyl groups which are crosslinked with certain dicarboxylic acid dihydrazides, in addition to (d) at least two (meth) contains copolymerized acrylic esters of C₁ to Canol alkanols and / or styrene in such a selection and in such proportions that the copolymer has a glass transition temperature of -15 to + 10 ° C before crosslinking. |