Linoleic acid, dimer, additive

Dimer acid Empol 1016 Empol 1020 Empol 1022, 1004, 1026 Industreneis D Pripol 1017, 1022, 1025. Dicarboxylic acid formed by the catalytic dimerization of linoleic acid used as a lubricant, corrosion inhibitor, mildness additive in household detergents, plastics, and protective coatings. Arizona Henkel/Emery Sherex Union Camp 14/itco/Humko. 

Dimer acids, or dibasic fatty acids, are formed either by thermal polymerization or carbon-to-carbon linking of fatty acid chains. Thermal polymerization of monomeric fatty acids like dehydrated castor oil or linoleic acids carried out at 205°C-300°C in an inert atmosphere yields dimer acid. Whereas the latter is established through a Diels-Alder mechanism, involving addition of one molecule of non-conjugated linoleic acid and one molecule of thermally conjugated linoleic acid or dehydrated castor oil [10]. A review of dimerization provides a comprehensive idea about the manufacture of dimer acids [11]. 

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