Abstract: A process for producing fatty acid esters with a high yield from an unrefined natural oil or fat, such as waste oil discarded by restaurant, food industries or common homes. The process comprises reacting an oil or fat with an alcohol in the presence of a titanate catalyst of general formula: Ti(OR)4 in which R means: methyl, ethyl, isopropyl, n-buthyl, 2-ethylhexyl or octoleneglycole rest.

Abstract: A process for producing tertiary amine-sulphur trioxide complexes of the general formulaR.sub.3 N:SO.sub.3where R is a either methyl, ethyl, or propyl or the group R.sub.3 N is pyridyl comprising forming a reaction mixture of chlorosulfonic acid, pyridine or other tertiary amine R.sub.3 N, where R is previously defined and a chlorinated organic solvent. Gaseous ammonia is passed into the reaction mixture in order to recover amine from amine hydrochloride which is formed as a by-product of the reaction. Since the amine is more soluble in the chlorinated solvent than ammonium chloride that is co-produced, the reaction of the amine with chlorosulfonic acid to produce R.sub.3 N:SO.sub.3 is favored.

Abstract: The present invention relates to a process for the production of dipotassium-ascorbate-2-sulfate-dihydrate, a vitamin C derivative. It is used, among other things, as an additive to fish feed. In the process according to the process according to the invention, trimethylamine-sulfur-trioxide complex is added in only slight molar excess to a concentrated solution of potassium-L-ascorbate in water, and the pH value of this reaction mixture is set by successive additions of potassium hydroxide at a value in the range between 9.5 and 10.5, and is kept at this value for the duration of the reaction. The process permits the profitable production of dipotassium-ascorbate-2-sulfate-dihydrate on a large industrial scale. It is also explained how trimethylamine-sulfur-trioxide complex can be recovered from trimethylamine which occurs as a by-product during the production of dipotassium-ascorbate-2-sulfate.

Abstract: Process for the resolution of certain racemic .alpha.-aminonitriles into optically active enantiomers which includes treating the racemic .alpha.-aminonitriles with (-)-mandelic acid in an alkanol/C.sub.5-8 hydrocarbon mixture to obtain a racemic mixture of diastereoisomeric D and L salts of (-)-mandelic acid, macerating the salts with an alkanol/C.sub.5-8 hydrocarbon mixture; neutralizing the L-form; extracting the neutralized product; and converting it into a stable form.

Abstract: Process for the resolution of certain racemic .alpha.-aminonitriles into optically active enantiomers which includes treating the racemic .alpha.-aminonitriles with (-)-dibenzoyl-tartaric acid in polar solvents to obtain a racemic mixture of diastereoisomeric D and L salts of (-)-dibenzoyl-tartaric acid, macerating the salts with dioxane, neutralizing the L-form, extracting the neutralized product, and converting it into a stable form.