| abstract |
The present invention relates to copolymers which have a weight average molecular weight of about 1,500 to 75,000, are prepared from olefinically unsaturated compounds and contain in chemically bound form i) about 0.2 to 6.0% by weight of free hydroxyl groups, ii) about 1 to 30% by weight of carboxylic anhydride groups (expressed as C4H2O3) and iii) about 0.4 to 13% by weight of epoxide groups (expressed as C2H2O). The present invention also relates to a process for the production of these copolymers by copolymerizing a mixture of olefinically unsaturated compounds at about 60 to 120°C in the presence of compounds which initiate the polymerization reaction: Finally, the present invention also relates to the use of these copolymers as binders or binder components in one- or two-component coating or sealing compositions which may contain catalytically active organic amine compounds as an additional binder component. |