3 results about "Methyl linoleate" patented technology

The application discloses a preparation method of conjugated methyl linoleate and a feed composition containing the conjugated methyl linoleate. The method uses a byproduct of plant oil refining, i.e. deodorized distillate, as a source of linoleic acid, adds an alkali catalyst and a phase transfer catalyst to catalyze the conjugation of methyl linoleate to prepare the conjugated methyl linoleate, and a feed composition containing the prepared conjugated methyl linoleate as an active ingredient. In particular, a small amount of phase transfer catalyst can greatly improve the rate and conversion rate of the conjugation reaction, reduce the amount of alkali, and make the conjugation reaction condition mild, which can be carried out under normal pressure. The reaction is unique in that a cheap byproduct in the plant oil refining process is used to prepare the conjugated methyl linoleate, and a phase transfer catalyst is used in the conjugation process, the amount of alkali is reduced, the conjugation can be carried out under normal pressure, the complicated preparation process is simplified, and the high input cost problem of alkali and oil is overcome.

The disclosed biodiesel used in the CECL-109 method and the preparation method thereof comprise 7-10% of methyl palmitate, 20-24% of methyl erucate, 33-35% of methyl linoleate and 33-37% of methyl oleate, four materials are weighed according to the mass ratio of 100%, the preparation method is that the weighed materials are added into a beaker and then placed on a constant temperature magnetic stirrer for stirring, the temperature is adjusted to 20-30 DEG C, and the stirring is carried out for 20-40 min to obtain the required biodiesel. The biodiesel can realize the standard test of the antioxidant performance of the engine oil containing the biodiesel.

This invention belongs to the field of mineral flotation technology, specifically relating to a method for improving the yield of clean coal in difficult-to-float coal slime. The method includes: S1, reagent preparation and pretreatment: Based on the coal quality characteristics, methyl linoleate is mixed with n-dodecane and / or n-tetradecane at a mass ratio of (1-5):1, and ultrasonically dispersed for 3 hours to form a microemulsion composite collector; S2, slurry conditioning and mineralization: The above collector (800-1600 g / ton dry coal slime) and a frother are added to a slurry with a concentration of 80 g / L and stirred for 3 minutes; S3, flotation separation: Air bubbles are introduced to scrape off the clean coal. This invention, through a microemulsion composite collector with a specific composition, significantly enhances the hydrophobicity of the surface of difficult-to-float coal particles and the adhesion efficiency with air bubbles, solving the problems of poor selectivity and low clean coal yield of traditional collectors. It has the advantages of strong adaptability, high flotation efficiency, and a significant increase in clean coal yield.