Hoechst Aktiengesellschaft

Wolfgang Dathe

Albert Bender

Gerhard Werner

Albert Rudolphy

Reinhard Wagner

Hans-Jurgen Tietz

Process for the preparation of modified phenolic resins in which the starting components used for preparation of these modified phenolic resins are subjected to a condensation reaction under pressure and in the presence of an inert organic solvent which forms an azeotrope with water, and in which the water is removed from the reaction mixture continuously by azeotropic distillation. An improved space/time yield is achieved by this pressure distillation.

Process for the preparation of modified phenolic resins

Process for the manufacture of resinous products which comprises

Process for the preparation of reaction products of natural resinic

A composition for use as a binder in a non-aqueous printing ink which comprises a modified hydrocarbon resin containing carboxylic acid units, the carboxylic groups of which are partially esterified with a polyhydric alcohol in such an amount that the modified hydrocarbon resin product contains from 0.01 to 0.7 ester groups of polyhydric alcohol based on each acid group originally present and a process for its preparation.

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Wiesbaden, Germany

Wolfgang Dathe