91 results about "Saturated fatty acid ester" patented technology

Disclosed is a process for the manufacture of saturated fatty acid esters by subjecting unsaturated fatty acid esters to hydrogenation in the presence of a catalyst suitable for catalysing the saturation of double bonds in the esters, which is characterized in that said catalyst represents a homogenous complex of a Group VIII metal and a sulfonated phosphite as the polar ionic ligand.

The invention relates to a method for purifying sucrose fatty acid esters. The method comprises the following steps: dissolving crude sucrose ester products in an organic solvent which can be separated from water, thereby obtaining a crude sucrose ester product solution; dropwise adding a salt aqueous solution while stirring, so that fatty acid soap substances in the crude sucrose ester product solution generate fatty-acid alkaline-earth metal salts, wherein alkaline-earth metal salts and / or alkaline-earth metal oxides are dissolved in the salt aqueous solution, and the fatty-acid alkaline-earth metal salts are not dissolved in the organic solvent; removing generated solid fatty acid alkaline earth metal salts; adding saline water into the obtained object to carry out stirring and extraction, and sanding for separating a lower water layer; cooling liquid supernatant to 0-40 DEG C through stirring, and separating out sucrose ester crystal substances in precipitation form; removing liquid and taking solid matters; and drying the solid matters so as to obtain a sucrose ester product. According to the invention, a technological process of cooling crystallization is introduced, so that the problem that reaction raw materials such as fatty acid methyl esters and the like remain in products is solved, therefore, the content level of products is further improved, and the total ester content of products is more than 98%.

This invention provides: a new imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and the oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. Metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.