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出典:『Wikipedia』 (2011/07/17 15:58 UTC 版)

英語による解説

引用

Resin acids usually refers to mixtures primarily. Abietic acid is the main component but several related carboxylic acids. Nearly all resin acids have the same basic skeleton: three fused ring fused with the empirical formula C₁₉H₂₉COOH. These materials occur in rosin but also occur in fossil coal or copal resins, in old pine tree stumps, etc. Resin acids are tacky, yellowish gums that are water-insoluble. They are used to produce soaps for diverse applications, but their use is being displaced increasingly synthetic acids such as 2-ethylhexanoic acid or petroleum-derived naphthenic acids.