FIELD: chemistry.
SUBSTANCE: novel gallotannic compounds include gallotannin, wherein at least one hydroxyl group is substituted with a substitute, said substitute including a molecule, an oligomer or polymer, used in lithographic printing plate coatings, gallotannin or another gallotannin compound, wherein the substitutes are attached to gallotannin directly or through a linking group.
EFFECT: compounds can be used in a lithographic printing plate coating composition.
15 cl, 33 dwg, 49 ex
