90 results about "Saturated fatty acid ester" patented technology

Disclosed is a sustained release lipid pre-concentrate, comprising: a) a sorbitan unsaturated fatty acid ester having a polar head with at least two or more —OH (hydroxyl) groups; b) a phospholipid; and c) a liquid crystal hardener, free of an ionizable group, having a hydrophobic moiety of 15 to 40 carbon atoms with a triacyl group or a carbon ring structure. The lipid pre-concentrate exists as a liquid phase in the absence of aqueous fluid and forms into a liquid crystal in the presence of aqueous fluid. Also, a pharmaceutical composition further comprising a pharmacologically active ingredient plus the pre-concentrate is provided.

The present invention relates to a lipid composition comprising at least 5 wt % of a structuring agent dispersed in oil or fat wherein the structuring agent comprises at least 50 wt % of triacylglycerol containing a glycerin skeleton esterified with one type of saturated fatty acid having a chain length of either 10:0, 12:0 or 14:0. Further aspects of the invention are: the structuring agent, a food product comprising the lipid composition, the use of the lipid composition as a structure stabilizer or a moisture barrier in a food product; and a method for preparing the lipid composition.

A method for treating a fatty acid methyl ester. The method can include mixing the fatty acid methyl ester with an amount of urea and an amount of alcohol to make (i) a urea/fatty acid methyl ester ratio of from about 0.1:1 to 1:1 wt/wt and (ii) an alcohol/fatty acid methyl ester ratio of from about 3:1 to 10:1 wt/wt; heating the fatty acid methyl ester/urea/alcohol mixture to a temperature at which a homogenous mixture is obtained, cooling the fatty acid methyl ester/urea/alcohol mixture to a temperature where a solid phase comprising a clathrate of urea and saturated fatty acid ester and a liquid phase comprising unsaturated fatty acid methyl ester are formed, and separating the solid phase from the liquid phase. The unsaturated fatty acid methyl ester is useful as a fuel resistant to gel formation at low temperature.

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 characterised 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%.

Various non-limiting embodiments disclosed herein relate generally to aqueous-coating compositions and thickening systems that can be used in aqueous coating-compositions. More particularly, certain non-limiting embodiments disclosed herein relate to aqueous-coating compositions, such as latex paints, comprising xanthan gum and at least one ester of an unsaturated fatty acid that is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Other non-limiting embodiments relate to thickening systems comprising a mixture of a xanthan gum and at least one ester of an unsaturated fatty acid, wherein the thickening system is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Still other non-limiting embodiments relate to methods of making and using the aqueous coating-compositions and thickening systems disclosed herein.

The invention belongs to the technical field of food and chemical industry and particularly relates to a water-soluble phytosterol unsaturated fatty acid microcapsule and preparation method of water-soluble phytosterol unsaturated fatty acid microcapsule. The microcapsule comprises 25 to 40 percent of phytosterol unsaturated fatty acid ester, 5 percent of emulsifying agents, 6.25 to 18.75 percent of sucrose and the balance wall materials, wherein the total quantity is 100 percent, the emulsifying agents are glycerin monostearate and sucrose ester, the mass ration of the glycerin monostearate to the sucrose ester is 1:(0.33-3), the ratio of the sucrose ester to the sucrose is 1:5, and the wall materials are dextrin and soy isolate protein. The water solubility of the phytosterol unsaturated fatty acid microcapsule is good, the phytosterol unsaturated fatty acid microcapsule can be mixed and dissolved with water-soluble matters, the application of the phytosterol ester to functional food, dairy products and beverages is widened, in addition, the preparation method disclosed by the invention is simple, the equipment requirement is low, and the preparation method is suitable for large-scale industrial production.

The invention provides a preparation method of polymer fatliquoring agent, comprising the following steps: (1) component A and component B are mixed, the component A is at least one of natural oil containing unsaturated fatty acid and long carbon chain unsaturated fatty acid ester, the component B at least comprises monoene which belongs to an unsaturated monomer, peracid is used as catalyst, so as to carry out copolymerization; (2) alkali is added in a polymer which carries out copolymerization, and the alkali and the polymer carry out neutralization reaction, the polymer is neutralized to have pH value from 6.0 to 8.5. In the invention, the peracid is used as the catalyst, the reaction condition is mild, no waste is discharged in the reaction process, and the product can be biologically degraded.

The invention relates to the technical field of medicine, and relates to a saturated long-chain fatty acid-modified 7-ethyl-10-hydroxycamptothecin (SN-38) compound and a long-circulating liposome thereof. Under substitution reaction conditions and the existence of an acid-binding agent, SN-38 is subjected to saturated long-chain fatty acid chloride, such that a SN-38 monounsaturated fatty acid ester compound is obtained. The compound has a following general formula (I). The long-circulating liposome prepared with the compound provided by the invention has the advantages of improving drug anti-tumor effect, enhancing drug stability, reducing drug toxic and side effects, and the like.

Disclosed is a pharmaceutical composition, comprising: a) at least one sorbitan unsaturated fatty acid ester having a polar head with at least two or more —OH (hydroxyl) groups; b) at least one phospholipid; c) at least one liquid crystal hardener which is free of an ionizable group and has a triacyl group with 15 to 40 carbon atoms or a carbon ring structure in a hydrophobic moiety; and d) at least one GnRH (gonadotropin-releasing hormone) analogue as a pharmacologically active substance, wherein said lipid pre-concentrate exists as a liquid phase in absence of aqueous fluid and forms into a liquid crystal in presence of aqueous fluid. The pharmaceutical composition is configured to enhance the sustained release of the pharmacologically active substance GnRH analogue.

The invention relates to a method for synthesizing and separating phytosterol saturated fatty acid esters and phytosterol unsaturated fatty acid esters. The method comprises the following steps: reacting phytosterol and a mixture of saturated fatty acid esters and unsaturated fatty acid esters, sequentially washing the obtained products by a 70-80DEG C aqueous ethanol solution with the volume fraction of above 95% and an -10-10DEG C aqueous methanol solution with the volume fraction of above 80%, filtering, washing the obtained filter cake by the -10-10DEG C aqueous methanol solution with the volume fraction of above 80% to obtain the phytosterol saturated fatty acid esters with the purity of above 90%, carrying out reduced pressure distillation on the obtained filtrate, and carrying out film evaporation and molecular distillation to obtain the phytosterol unsaturated fatty acid esters with the purity of above 90%. According to the invention, the method is simple, conversion rates of raw materials are high, and the obtained products have the advantages of high purity and good color, and the phytosterol saturated fatty acid esters which can be used for antibiosis and anti-inflammation can be applied to the cosmetic field; and the phytosterol unsaturated fatty acid esters which have the antioxidation and cholesterol reduction effects can be applied to medicine and food fields.

Scratch resistance and/or reflow of a refinish topcoat is improved by preparing the topcoat from a refinish topcoat coating composition comprising an unsaturated fatty acid ester polyol that does not undergo oxidative cure when the applied refinish topcoat coating composition is cured.

The invention relates to a coupling process for preparing biodiesel and enriching polyunsaturated fatty acid esters. The coupling process comprises the following steps: reacting grease, short-chain alcohol, water and liquid lipase in a reactor, and then dividing reaction liquid into a heavy phase and a light phase; recycling and reusing enzyme in the heavy phase; and distilling the light phase so as to separate out a C14-C18 fatty acid ester which serves as the biodiesel. A tower oil phase is applied to subsequent immobilized enzyme transformation, and meanwhile, online dehydration is introduced to a reaction course. The process, without conducting pre-treatment on the grease raw material in a previous reaction process of liquid enzyme catalysis, can achieve the effective transformation of the grease, which is C14-C18 in fatty acid carbon-chain length, into corresponding fatty acid ester, with a transformation rate reaching 90% or above; and tower liquid is applied to immobilized lipase catalysis in the second stage, and polyunsaturated fatty acid esters higher than C19 are effectively transformed into corresponding fatty acid ester, with a transformation rate reaching 98% or above. The process has the advantages of being strong in grease raw material adaptability, environment-friendly and clean in process, high in product yield and the like.

A novel imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and 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. A 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.

The invention discloses a preparation method for a fatty acid ester phase-change energy storage material. The preparation method comprises the following operation steps: (1) carrying out an ester exchange reaction: enabling grease containing triglyceride and alcohols to react under the effect of a catalyst to generate a fatty acid ester, wherein the adding mol ratio of the grease to the alcohols is 1 to 6 and the catalyst is metal hydroxide or metal alcoholate; (2) carrying out a hydrogenation reaction: carrying out the hydrogenation reaction on the fatty acid ester to generate a saturated fatty acid ester, wherein the catalyst of the hydrogenation reaction is palladium active carbon; the mass percent of palladium is 4%-6%; the reaction temperature is 55-65 DEG C; the reaction pressure is 0.2-0.3MPa. According to the preparation method, raw materials for preparing the fatty acid ester are renewable and environment-friendly oil and fat and are cheap and easy to obtain. The invention provides an effective method which adopts the current grease as the raw material to prepare the high-quality fatty acid ester phase-change material by using a small cost.

A lubricating oil additive contains at least one steroid derivative selected from steroid saturated fatty acid ester, steroid carbonate ester and steroid ether. A lubricating oil composition added with the lubricating oil additive exhibits a low friction coefficient and excellent wear resistance, heat resistance and oxidation resistance stability.

The invention discloses a preparation method of special nanometer calcium carbonate for antifogging polyethylene films. The method concretely comprises the following steps: diluting lime milk, and conveying the diluted lime milk into a film reaction carbonizer; introducing a purified and cooled kiln gas into the above film reactor, and carrying out a carbonizing reaction to obtain a nanometer calcium carbonate slurry; adding sodium carboxymethylcellulose into the film reactor the after the completion of the reaction, performing uniform stirring, conveying the obtained slurry into a homogenization tank, and carrying out heat insulation aging; conveying the aged calcium carbonate slurry into a surface treatment tank, heating the aged slurry, adding a composite emulsion of a saturated fatty acid ester and polyphenyltrimethoxysiloxane to carry out secondary cladding modification, and performing stirring to obtain a modified nanometer calcium carbonate slurry; and carrying out pressure filtration dehydration, and drying, crushing, classifying and packaging the hydrated modified slurry to obtain the special nanometer calcium carbonate for antifogging polyethylene films. The nanometer calcium carbonate obtained in the invention can meet the requirements for the dispersibility, transparency and compatibility of a filler in the polyethylene system, and also can effectively prevent the films from fogging.

The invention discloses water-soluble haematococcus pluvialis astaxanthin soft capsules and a preparation method therefor. Capsule walls of the astaxanthin soft capsules comprise the ingredients in parts by mass: 100 parts of gelatin, 6 parts of citric acid, 20 parts of glycerine, 4 parts of sodium carboxymethyl cellulose, 10 parts of sorbitol and 11-13 parts of water; and capsule cores comprise the ingredients in percentage by mass: 10.0%-18.0% of haematococcus pluvialis astaxanthin oil, 10.0%-20.0% of polyethylene glycol-400, 20.0%-40.0% of mono-/bis-glyceryl unsaturated fatty acid ester, 2.0%-5.0% of sorbitol and 30.0%-45.0% of decapolyglyceryl monooleate. The preparation method for the astaxanthin soft capsules further comprises a step of carrying out high-pressure homogenizing mixingunder nitrogen protection so as to prepare the capsule cores. According to the water-soluble haematococcus pluvialis astaxanthin soft capsules and the preparation method therefor, all adjuvants employed are used by health-care foods according to production needs, an emulsifier is an unsaturated fatty acid processed product, the astaxanthin soft capsules are safe, non-toxic, compliant and legal, are low in health security risk and are suitable for an aqueous nutrient absorption system of the intestines and stomach of a human body, and the bioavailability of an active ingredient, i.e., astaxanthin can be improved.