| 摘要 |
<p>Metallic soaps, particularly zinc soaps are produced from a reaction mixture initially comprising a metal oxide or hydroxide, for example, zinc oxide, water and a glyceryl ester, particularly a triglyceride, the ester and said metal oxide or hydroxide being present in at least approximately stoichiometric amount the reaction mixture is agitated and the reactants are reacted in the agitated mixture to produce a metallic soap and glycerine, at a temperature at which the metallic soap is molten, in the presence of an excess of water effective to dissolve the glycerine formed in the reaction mixture such that reaction between by-product glycerine and the product metallic soap is substantially hindered, eventually the reaction mixture is allowed to separate into an sequence layer and a molten layer of product metallic soap under a pressure ouch that the aqueous layer is essentially quiescent and the molten metallic soap layer is dissociated from the aqueous layer; in this way metallic soaps of high purity can be obtained.</p> |
