| abstract |
This invention relates to unsaturated polyester resin or vinyl ester resin compositions comprising (I) a polymer containing reactive unsaturations as a resin; (ii) a 1,3-dioxo-component, and (iii) optionally a reactive diluent and/or an inhibitor and/or a stabilizer; the resin compositions being curable with a peroxide component, and wherein (a) the resin in the resin composition has an acid value ≤ 10; and (b) the resin composition contains - while being cured - a base, which is either (I) selected from the group of organic or inorganic oxides, hydroxides, alkoxides or carboxylates for each of which the cation has a redox potential of the metal of at most -1V, or of ammonium ions; or is (ii) selected from the group of nitrogen-containing organic compounds. The present invention also relates to objects and structural parts prepared from such resin composition by curing with a peroxide. Finally the invention also relates to methods of peroxide curing of unsaturated polyester or vinyl ester curing and its use in chemical anchoring, roof coatings etc. |