METHOD OF PRODUCING A STERICALLY STABILIZED NON-AQUEOUS DISPERSION OF A POLYEPOXIDE, AND COATING MATERIALS CONTAINING SUCH A DISPERSION

The present invention relates to a process for the preparation of a sterically stabilized, nonaqueous dispersion of a polyepoxide, in which at least one epoxy resin (A) having at least 2 epoxide groups is reacted in an organic solvent in the presence of a dispersion stabilizer with at least one diol...

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Bibliographische Detailangaben
Hauptverfasser:	CIBURA, KLAUS, BREMSER, WOLFGANG, VOGDANIS, LAZAROS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a process for the preparation of a sterically stabilized, nonaqueous dispersion of a polyepoxide, in which at least one epoxy resin (A) having at least 2 epoxide groups is reacted in an organic solvent in the presence of a dispersion stabilizer with at least one diol (B) of the formula (I) HOROH (I) in which R is a group of the formula (II) (II) in which D is a methylene or a propylene group, and if desired with a further component (C) which has groups which are reactive toward epoxide or hydroxyl groups, characterized in that 1.) in a first step a portion of the epoxy resin component (A) is reacted with an excess of the diol (B) of the formula (I) and, if desired, of component (C), based on the quantity of epoxy resin employed in this step (1), and 2.) subsequently the reaction product obtained in step (1) is reacted with the rest of the epoxy resin component (A) and/or of component (C) to give the desired end product.