Compositions suitable as binders and their use in coating...

Details Compositions suitable as binders and their use in coating... Compositions suitable as binders and their use in coating...

C - Chemistry, Metallurgy

08

G

C08G 59/42 (2006.01) C08G 59/32 (2006.01) C08L 63/00 (2006.01) C08L 73/02 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2050114

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.

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