| 摘要 |
Toluene-soluble, modified natural resin acid esters are obtd. by reaction of (A) natural resins and resin acids, (B) mono- and poly-nuclear phenols which are multifunctional towards oxo cpds., (C) aldehydes or aldehyde acetals, (D) alcohols with at least 2 OH gps., and opt. also (E) alpha - beta -unsatd. carboxylic acids or anhydrides, (F) fatty acids or esters, (G) ethylenic monomers and/or (H) unsatd. hydrocarbon resins, in the presence of (I) Li cpds at 100-300 degrees C with cleavage of water. Also claimed is the above process, using 30-95 wt.% (A), 1-45 wt.% (B) and 1-20 wt.% (C) or the corresp. amt. of a condensation prod. of (B) and (C), 1-20 wt.% (D), 0-20 wt.% (E), 0-40 wt.% (F), 0-30 wt.% (G), 0-30 wt.% (H) and 0.01-5 wt.% (I). |
