Bayer Aktiengesellschaft

Mobay Corporation

Helmut P Prochaska

Knud Reuter

Karlheinz Wolf

Klaus Kunde

Artur Haus

Johannes Eibl

Walter Tames

Printing inks are described which utilize a unique class of coloring agents which are the reaction products of free NCO group bearing resins and dyestuffs bearing reactive hydrogens. A novel class of such adducts which contain monocarboxylic acid residues are also described. These printing inks, which may also contain traditional pigments, find particular utility in letterpress or offset printing.

Printing ink

A process for producing a spotted effect on synthetic fibre materials using dyestuff pastes which contain insoluble or scarcely soluble particles of one or a plurality of dyestuff preparations, said particles having a size of 10.mu. to 200.mu., preferable 40.mu. to 100.mu. and said dyestuff preparations consisting of a dyestuff, a resin or wax which is insoluble or scarcely soluble in water and optionally of a softener and/or tenside.

Process for producing spotted dyeings with pastes containing

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Wayne, NJ, United States of America

Helmut P Prochaska