COMPOSITIONS SUITABLE AS BINDERS AND THEIR USE IN COATING AND SEALING COMPOSITIONS

摘要

The present invention relates to compositions suitable for use as binders and containing A) 10 to 99 parts by weight of at least one copolymer which has a weight average molecular weight of 1500 to 75,000, is prepared from olefinically unsaturated compounds and contains i) 0.1 to 8.0% by weight of free hydroxyl groups and ii) 1 to 29% by weight of epoxide groups (calculated as C2H3O) and B) 1 to 90 parts by weight of at least one organic polyanhydride containing at least two cyclic carboxylic acid anhydride groups per molecule, provided that 0.1 to 10 anhydride groups of component B) are present for each epoxide group of component A). The invention also relates to the use of the binder compositions as binders for thermosetting coating or sealing compositions, or, in the presence of catalysts, as binders for coating or sealing compositions which can be hardened at room temperature.