Abstract: The present invention relates to a powder coating composition containing as binder one or more than one poly(meth)acrylic resin having free carboxyl groups and, as hardener for these poly(meth)acrylic resins, one or more than one epoxy resin having a molecular weight of up to 1500, wherein the epoxy resins comprise at least 70% by weight of glycidyl esters which are selected from the group consisting of aliphatic and cycloaliphatic polyglycidyl polycarboxylates. More particularly, the present invention relates to a coating composition, which is free of carboxyl-functional polyesters, comprising a binder consisting of one or more than one poly(meth)acrylic resin having free carboxyl groups and, as hardener for the poly(meth)acrylic resin, one or more than one epoxy resin having a molecular weight of up to 1500, wherein the epoxy resin is a cycloaliphatic polyglycidyl polycarboxylate or mixtures thereof.

Abstract: A powder coating hardener based on epoxide compounds having a molecular weight of no more than 1500, which is solid at room temperature, the epoxide compounds consisting of 60 to 100% by weight of diglycidyl 1,4-cyclohexanedicarboxylate in the form of the pure trans-isomer or of a cis/-trans-isomer mixture having a melting point (peak maximum of the DSC scan at a heating rate of 10° per minute) of above 70° C., and of 0 to 40% by weight of other epoxide compounds, and wherein 0 to 15% by weight of the entire amount of epoxide compounds can contain aromatic structural elements in the molecule. The powder coating hardeners give powder coatings based on poly(meth)acrylic resins having free carboxyl groups, which have good flow even at low temperatures.

Abstract: Epoxy resins which are obtainable by a process in which, first of all(a) by reacting(A1) at least one substance selected from the substances of the formula (I) and of the formula (II): ##STR1## in which Alc is the radical of a diol which has been freed fromI ts hydroxyl groups and comprises 2 to 20 carbon atoms,Ac is the radical of a dicarboxylic acid which has been freed from its carboxyl groups and comprises 2 to 20 carbon atoms,[Ph] is the radical of a difunctional phenolic compound which has been freed from its phenolic hydroxyl groups and has 6 to 20 carbon atoms, andc is a number greater than 1 but not more than 2, with(A2) at least one liquid diglycidyl ether based on a first bisphenol compound in an amount chosen so that there are more than two equivalents of glycidyl groups of component (A2) for a total of one equivalent of carboxyl and phenolic hydroxyl groups of component (A1),a pre-advanced diglycidyl ether resin is formed in dispersion in the liquid diglycidyl ether of which there is at least one

Abstract: 1. A solid composition comprising(a) a solid oligomeric, cationically polymerisable polyglycidyl ether or polyglycidyl ester, a mixture of a solid oligomeric, cationically polymerisable polyglycidyl ether or polyglycidyl ester and a liquid or crystalline monomeric mono-, di- or polyepoxy resin, or a mixture of a solid oligomeric, cationically polymerisable polyglycidyl ether or polyglycidyl ester and a cyclic acetal, said oligomeric polyglycidyl ether or polyglycidyl ester and the mixtures containing the oligomeric polyglycidyl ether or polyglycidyl ester having a glass transition temperature (T.sub.G) higher than 35.degree. C.,(b) a multifunctional nucleophilic chain transfer agent,(c) 0.

Abstract: There is disclosed a solid composition of polyglycidyl compounds having a molecular weight of less than 1500, which composition consists of one or more than one solid polyglycidyl compound and altogether not less than 5% by weight of one or of a mixture of more than one polyglycidyl compound, which compound or mixture is normally in liquid form, said amount being based on the total amount of all polyglycidyl compounds in the composition, which composition contains the said solid polyglycidyl compounds or at least part of the said solid polyglycidyl compounds in form of one or a mixture of more than one solid mixed phase, which solid mixed phase or mixture of more than one solid mixed phase essentially comprises the total amount of the polyglycidyl compounds which are normally in liquid form as additional component or components.

Abstract: There is disclosed a solid composition of polyglycidyl compounds having a molecular weight of less than 1500, which composition consists of one or more than one solid polyglycidyl compound and altogether not less than 5% by weight of one or of a mixture of more than one polyglycidyl compound, which compound or mixture is normally in liquid form, said amount being based on the total amount of all polyglycidyl compounds in the composition, which composition contains the said solid polyglycidyl compounds or at least part of the said solid polyglycidyl compounds in form of one or a mixture of more than one solid mixed phase, which solid mixed phase or mixture of more than one solid mixed phase essentially comprises the total amount of the polyglycidyl compounds which are normally in liquid form as additional component or components.