Hoechst Aktiengesellschaft

Vianova Resins, Inc.

Astrid Giencke

Gerd Walz

Bernd Mergardt

Albert Bender

Uwe Neumann

Robert Kiehl

Petra Ulrich

Modified natural-resin acid esters comprising units of compounds of each of the groups A) natural resins and natural-resin acids, B) aldehydes and aldehyde acetals, C) alcohols having at least two hydroxyl groups, D) metal salts and, if desired, of compounds of one or more of the groups E) .alpha.,.beta.-ethylenically unsaturated carboxylic acids and their anhydrides, F) fatty acids and fatty acid esters, G) ethylenically unsaturated hydrocarbon resins are suitable in pigment dispersions and pigment concentrates for printing inks. The natural-resin acid esters contain substantially no phenol or phenol-aldehyde condensation products.

Modified natural-resin acid-aldehyde adducts

Polymer mixtures comprising at least one amino group-containing polymer A) and at least one polymer B) of ethylenically unsaturated monomers, which mixtures are obtained by reacting an epoxide with an amine in the presence of the ethylenically unsaturated monomers, and then arrying out free-radical polymerization. These polymer mixtures are employed for the preparation of binder vehicles for water-based printing inks and print varnishes.

Polymer mixtures

Amino-containing polymer systems which are suitable for the preparation of binders for printing inks can be obtained by synthesizing a polymer or polymer mixture A from at least one compound from each of the groups

Polymer systems, process for their preparation, and their use for

Emulsifier-free synthetic resins and mixtures of synthetic resins with water are used as binders for water-borne printing inks and printing varnishes. The resins contain: (a) a polymer resin A containing acid groups which may have been neutralized or partially neutralized and can be prepared by in-situ polymerization of ethylenically unsaturated compounds containing acid groups with further ethylenically unsaturated compounds and condensation with monohydroxy compounds and, if desired, neutralization or partial neutralization, and (b) if desired, a water-insoluble polymer resin B in the form of latex particles which can be prepared by emulsion polymerization of ethylenically unsaturated compounds in the presence of the polymer resin A.

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Hofheim, Germany

Astrid Giencke