13 results about "Linolenate" patented technology

The invention relates to the technical field of coatings, in particular to a modified FEVE fluorocarbon resin coating and a preparation method thereof. The problem that the FEVE fluorocarbon coating is poor in durability is solved. The preparation method comprises the following steps: modifying FEVE fluorocarbon resin with linoleic acid to obtain a granular material; stirring the modified FEVE fluorocarbon resin, polyisocyanate, montmorillonite and a composite solvent to obtain a prepolymer; pre-dispersing and grinding silicon carbide, modified zinc oxide, a dispersing agent and a composite solvent, adding nano composite particles for ultrasonic dispersion, and adding a prepolymer and a flatting agent to obtain the modified FEVE fluorocarbon resin coating. Wherein the FEVE fluorocarbon resin is modified, so that the crosslinking speed, the coating strength and the adhesive force are improved, the stain resistance, the weather resistance and the corrosion resistance are improved through the nano composite particles and the like, and finally the durability of the FEVE fluorocarbon resin coating is improved.

The invention discloses quick-drying alkyd resin and a preparation method thereof, and belongs to the technical field of resin.The quick-drying alkyd resin is prepared from, by weight, 10-12 parts of trimethylolpropane, 8-15 parts of phthalic anhydride, 15-18 parts of linoleic acid, 5-8 parts of four-terminal alkenyl terephthalic acid derivatives, 15-20 parts of xylene, 2-3 parts of styrene and 0.02-0.03 part of initiator. The four-terminal alkenyl terephthalic acid derivative and styrene are used for synergistic modification, the prepared quick-drying alkyd resin has excellent mechanical properties, meanwhile, the drying time is shortened, and the requirement of the market for quick-drying materials is sufficiently met.

The invention belongs to the technical field of biological medicine, and particularly relates to a diglycerol linolenate galactoside compound in pepper as well as a preparation method and application of the diglycerol linolenate galactoside compound. The preparation method comprises the following steps: (1) taking red peppers to prepare pretreated red peppers; (2) adding the pretreated red peppers into an ethanol solution, performing ultrasonic extraction, and collecting first filtrate and first filter residues; (3) adding an ethanol solution into the first filter residue, carrying out ultrasonic extraction, combining the first filtrate and the second filtrate, and concentrating to obtain a crude extract; (4) separating the crude extract by adopting high-speed counter-current chromatography to obtain a primary purified product; and (5) further separating and purifying the primary purified product by adopting high performance liquid chromatography, and identifying to obtain the diglycerol linolenate galactoside compound. The purity of the diglycerol linolenate galactoside compound obtained by the preparation method is as high as 99.3%, and the diglycerol linolenate galactoside compound has a remarkable scavenging effect on DPPH free radicals, shows good antioxidant activity and has a wide application prospect.

The invention relates to the technical field of phosphorite flotation, and particularly provides a phosphorite double-reverse flotation method. The method comprises the following steps: (1) ore pretreatment; (2) primary flotation is conducted, specifically, 10-15 kg / t of raw ore mixed acid and 1-1.5 kg / t of raw ore first collecting agent are added into the ore pulp, reverse flotation is conducted, foam is removed, and primary flotation ore pulp is obtained; the mixed acid comprises sulfuric acid, caffeic acid and phosphoric acid; the first collecting agent comprises sodium laurate and sodium linolenate; (3) secondary flotation is conducted, specifically, alkali is added into the primary flotation ore pulp, then a second collecting agent accounting for 0.8-1.3 kg / t of raw ore is added, reverse flotation is conducted, foam is removed, and phosphate concentrate is obtained; and the second collecting agent comprises lauryl amine, sodium carbonate and polyacrylonitrile. Compared with the prior art, the double-reverse flotation method has the advantages that high-quality phosphate concentrate products can be obtained, consumption of chemicals is reduced, and production cost is lowered.

The invention discloses an elastic adhesive for connecting a flexible circuit and a rigid device, and relates to the technical field of adhesive materials. The elastic glue is composed of a component A and a component B, the component A is prepared from the following components in parts by mass: 30 to 50 parts of bio-based polyurethane, 40 to 60 parts of modified epoxy resin, 10 to 20 parts of filler and 10 to 15 parts of diluent; and the component B is a mixed curing agent. According to the preparation method, acrylpimaric acid is purified, then acrylpimaric acid cyclic carbonate is synthesized, isocyanate is replaced, bio-based polyurethane is prepared through ring-opening addition of the acrylpimaric acid cyclic carbonate and polyamine, and the elasticity of epoxy resin is enhanced; unsaturated conjugated double bonds in the linoleic acid polyether polyol are self-crosslinked with oxygen at room temperature to form a net structure, so that the bonding strength of the epoxy resin is improved; the terminal carboxyl group of the epoxidized terminal carboxyl nitrile rubber and the epoxy group of the epoxy resin are subjected to esterification reaction to generate ester bonds, so that the interaction between the two is enhanced, the toughness is improved, and the mechanical strength is not influenced.

The invention relates to the technical field of daily chemicals, and discloses a special anti-freezing skincare essence for children and a process thereof, and the special anti-freezing skincare essence comprises the following raw materials in percentage by mass: 8.0-12.0% of refined wool fat; 3.0%-4.0% of a candida yeast fermentation lipid; 3.5%-4.2% of a maintaining agent; 1.5%-2.5% of linolenic acid glyceride; 4.5% to 5.5% of polyglycerol-9 distearate; 5.0% to 7.0% of a regulating agent; 2.0% to 5.0% of cane sugar; 1.2%-1.8% of a reinforcing agent; 0.3%-0.5% of low temperature type xanthan gum; and 57.5%-71% of deionized water. By adopting the technical scheme of compounding and adding 8-12% of refined wool fat and 2-5% of cane sugar, and controlling the content of branched fatty acid of the wool fat and the molar ratio of cane sugar to trehalose, the technical effects of no crystallization at low temperature and rheology recovery rate greater than or equal to 90% are achieved. Compared with a scheme of using common wool fat or a single humectant in the prior art, the problems of phase separation caused by solubility mismatch and low-temperature crystallization caused by excessive sucrose are solved.

The invention provides a flexible polyvinyl chloride cable material as well as a preparation method and application of the flexible polyvinyl chloride cable material. The flame-retardant PVC composite material is prepared from the following raw materials in parts by mass: 100 to 120 parts of PVC resin, 8 to 12 parts of epoxidized acetyl linoleic acid ester, 25 to 30 parts of trioctyl trimellitate, 12 to 16 parts of polypropylene glycol adipate, 8 to 10 parts of epoxidized soybean oil, 15 to 20 parts of filler, 10 to 20 parts of flame retardant, 4 to 5 parts of rare earth stabilizer and 2 to 3 parts of additive. According to the flexible polyvinyl chloride cable material, through the specific raw material ratio and the preparation method, the flexibility and wear resistance of the cable material are remarkably improved, meanwhile, good physical performance and electrical performance are kept, the excellent flame retardant property and thermal stability are achieved, and wide application prospects are shown.

Compositions and topical formulations comprising a PPAR agonist complex comprising glyceryl linoleate, glyceryl linolenate, xymenynic acid, and Pterocarpus marsupium bark extract are described herein. Methods of inducing skin barrier repair, increasing the biosynthesis of barrier lipids and proteins in the skin, stimulating hair growth, treating acne and combinations thereof utilizing the composition and topical formulations are also provided herein.

The invention relates to the technical field of coatings, and particularly discloses a water-based fluorocarbon emulsion resin coating and a preparation method thereof. The water-based fluorocarbon emulsion resin coating is prepared from the following raw materials in percentage by weight: 40-60 wt% of water-based fluorocarbon resin, 10-30 wt% of a solvent, 10-30 wt% of a solvent and 10-30 wt% of a solvent. 20-30 wt% of a filler; 5-10 wt% of a curing agent; 0.1 to 1 wt% of a neutralizer; 0.1 to 1 wt% of a wetting agent; 0.1 to 1 wt% of a defoaming agent; 0.1 to 1 wt% of a thickening agent; and the balance of water. The water-based fluorocarbon resin is obtained by crosslinking linoleic acid and FEVE fluorocarbon resin; the curing agent is amino resin. The composition can be used for protecting the surfaces of various instruments and equipment, and has the advantages of safety, environmental protection, high hardness, good adhesive force and simple construction operation steps; in addition, the preparation method also has the advantage of simple operation.

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.

The invention provides a method for recommending female mammary gland health care suggestions, and belongs to the technical field of female mammary gland health care. The recommendation method of the female breast health care suggestions comprises the following steps: S1, massaging breasts; s2, performing hot compress on the breasts; s3, applying the chest with castor oil; s4, changing diet; s5, preventing obesity; and S6, wearing a stable bra. During use, hydrogenated fat in margarine can interfere with the capability of converting fatty acid necessary in the body into Y-linoleic acid, weight loss is realized through aerobic exercise and anaerobic exercise, diet is controlled, and for women with excessive obesity, weight loss is helpful for relieving swelling and pain of breasts, and a stable bra is selected for wearing. The stable brassiere can prevent mastoptosis and can also prevent compressed breast nerves from being further compressed, discomfort is eliminated, the stable brassiere has a health care function, and the recommendation method of the female breast health care suggestion is good in treatment effect, can effectively eliminate pains of patients and can improve hyperplasia of mammary glands.

Disclosed is a long-acting sustained-release preparation pharmaceutical composition containing pramipexole, comprising a pharmaceutically acceptable salt of pramipexole and a pharmaceutical high polymer material. The preparation is selected from a microsphere, a sustained-release particle, and a subcutaneous implant. The pharmaceutically acceptable salt of pramipexole is selected from erucate, stearate, oleate, α-linolenate, heptadecanoate, pamoate, and palmitate. The high polymer material is selected from PLGA, PLA, mPEG-PLA, and PEG-PLA-PEG. The present invention belongs to the technical field of pharmaceutical preparations and solves the problems of short release period and poor release effect of pramipexole in the prior art.