2 results about "Linolenate" patented technology

This application belongs to the technical field of alkyd resin coatings, specifically providing a fast-drying anti-corrosion coating based on alkyd resin and its preparation method. The preparation method of the fast-drying anti-corrosion coating based on alkyd resin includes the following steps: 1) Linoleic acid, isophthalic acid, and trimellitic anhydride undergo an esterification polycondensation reaction under an esterification catalyst and an inert atmosphere through a stepwise heating process; 2) The reaction system of step 1) is cooled to 170-190℃, and trimellitic anhydride and an end-group modified polyethylene glycol composition are added, and the reaction continues; the reaction system is cooled to 110-130℃, a co-solvent is added and stirred evenly, the pH is adjusted to 7.0-8.5, and deionized water is added to disperse until the solid content is 45%-55%, obtaining a base material; 3) The base material, auxiliary materials, and deionized water from step 2) are mixed evenly to obtain the final product. The coating obtained by this application has the advantages of fast drying, high adhesion, and good corrosion resistance.

The application relates to the technical field of unsaturated fatty acid and its derivative preparation, in particular to a preparation method of a linoleic acid methyl ester and alpha-linolenic acid methyl ester composition. The preparation method is characterized in that supercritical fluid such as CO2 with strong permeability and high solubility is used for supercritical extraction of soybeans, and an auxiliary solvent such as ethanol is added, so that the oil in the soybeans can be efficiently extracted, and unsaturated fatty acids such as linoleic acid and alpha-linolenic acid can be effectively enriched. The first product is subjected to methyl esterification modification, purified in a simulated moving bed chromatograph, and matched with a C18 fixed phase and a polar eluent, and a port is periodically switched, so that the mass ratio of linoleic acid methyl ester and alpha-linolenic acid methyl ester can be effectively controlled, a feasible way for preparing LA / ALA with a specific mass ratio is provided, and the application requirements can be met.