| 摘要 |
Phenolic-resin-modified natural resin acid esters obtained by reaction of A) natural resins or natural resin acids, B) mononuclear or polynuclear alkylolizable phenols, C) aldehydes or aldehyde acetals, D) aliphatic, cycloaliphatic or araliphatic polyols, E) magnesium compounds, F) if appropriate, fatty acids or fatty acid compounds and G) if appropriate, ethylenically unsaturated hydrocarbon resins, at a temperature of 100 DEG to 250 DEG C. and subsequent azeotropic removal of the water by distillation by means of an entraining agent at 200 DEG to 300 DEG C.
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