Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts483. ------. [DEUTSCHE HYDRIERWERKE A. G.] [Plastic Softeners From Synthetic Fatty Acids.] French Patent 874,890, no date. Kainer, p. 286. First running fatty acids from the paraffin oxidation are used as starting material in the production of softners by the esterfication of the fatty acids with alcohols. The resulting esters have softening properties similar to phthalic acid esters. |