Abstract: The invention discloses a method for preparation of acetoacetate ester compounds with amino alcohol catalysts which are themselves diketenized in the course of the diketenization reaction; and subsequent polymerization of these acetoacetate ester compounds with e.g. acrylate compounds to provide resins, whereby the acetoacetylated amino alcohol catalyst partakes in the polymerization reaction.

Abstract: The present invention relates to a resin composition that comprises an acetoacetate ester compound with at least two acetoacetate ester functional groups, an acrylate compound with at least two acrylate functional groups, and a tertiary amine curing catalyst. This resin composition acts as an isocyanate-free binder that is less toxic to the environment. The invention further discloses a method for preparation fiber reinforced parts comprising fibers and said resin composition as well as a method for the preparation of foundry molds for the casting industry, which is based on said binder.

Abstract: Pyrimidine-5-carboxylates of formula: wherein R is C1-4 alkyl, R1 is C1-4 alkyl, trifluoromethyl, R2 is hydrogen or C1-4 alkyl and X is hydroxy, chlorine or bromine, are prepared from certain 3-oxoalkanoates of formula (II): with urea and orthoesters of formula (III) R2C(OR). The intermediate 2-acyl-3-ureidoacrylate, without being isolated, is reacted to give a 2-hydroxypyrimidine-5-carboxylate[(I), X?OH] or a hydrate thereof, which is optionally converted into the corresponding chloro or bromo compound (I, X?Cl, Br).