UNSATURATED POLYESTER OR VINYL ESTER RESIN COMPOSITION

摘要

This invention relates to unsaturated polyester or vinyl ester resin compositions, that are curable with a peroxide, comprising - while being cured - a polymer containing reactive unsaturations, a base, an oxo-component; and optionally a reactive diluent; wherein a. the polymer has an acid value = 10 mg KOH/g; b. the base is either a hydroxide, alkoxide or carboxylate with a redox potential of the metal at most -1 V, or an ammonium ion or amine, or a mixture of such substances; c. the oxo-component is an a-hydroxyoxo-compound according to formula (1) with R<SUB>1</SUB> and R<SUB>2</SUB>, identical or different, representing hydrogen, a C<SUB>1</SUB>-C<SUB>40</SUB> alkyl, a C<SUB>6</SUB>-C<SUB>40</SUB> aryl, a C<SUB>7</SUB>-C<SUB>40</SUB> alkylaryl, a C<SUB>1</SUB>-C<SUB>20</SUB> ether OR<SUB>3</SUB>, a C<SUB>1</SUB>-C<SUB>20</SUB> amine NR<SUB>4</SUB>R<SUB>5</SUB>, with each of R<SUB>3</SUB>, R<SUB>4</SUB>, and R<SUB>5</SUB> independently selected from the same groups as R<SUB>1</SUB> and R<SUB>2</SUB>, and wherein two of the R groups may be joint together to an a-hydroxyoxo cyclic structure of at least 5 carbon atoms, and/or with any of the groups R<SUB>1</SUB>, R<SUB>2</SUB>, R<SUB>3</SUB>, R<SUB>4</SUB>, and R<SUB>5</SUB> representing a polymer residue. The invention also relates to methods of curing such resin compositions with a peroxide component, and to use of such resin compositions in. in chemical anchoring, roofing, relining, boats, containers, tanks, pipes, construction, automotive parts, flooring, or windmill blades. The invention finally relates to cured objects and structural parts, having a thickness of at least 0.5 mm obtained from such resin compositions or by such method of curing.