90 results about "Saturated fatty acid ester" patented technology

The invention discloses a preparation method of pentaerythritol unsaturated fatty acid ester. The preparation method includes: adding pentaerythritol, fatty acid type diesel anti-wear agent and cerium dioxide according to a molar ratio of 1:(4-6):(0.02-0.05) into a reaction kettle for mixing and stirring. Cerium dioxide which is reusable is adopted as a heterogeneous catalyst and is short in reaction time and high in catalyzing efficiency; in the process of preparing pentaerythritol unsaturated fatty acid ester, using of a lot of azeotropic solvent and removing of the catalyst are not needed, only simple filtering is needed, processes of neutralizing and washing are not needed, and no wastewater is discharged in subsequent treatment processes, so that preparation efficiency is improved greatly, and the preparation method is enabled to meet national requirements on environment protection.

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 characterized in that said catalyst represents a homogenous complex of a Group VIII metal and a sulfonated phosphite as the polar ionic ligand.

The invention discloses a method for preparing polyol from waste grease, comprising the following steps: a solid acid catalyst which has large hydrophobic surface and has both a sulfonic group and a carboxylic group is adopted to catalyze esterification and transesterification between waste grease and methanol so as to convert waste grease to fatty acid methyl ester and a by-product glycerin; saturated fatty acid ester in fatty acid methyl ester is separated; under the catalysis of a dual acid site solid acid and in cooperation of the dual acid site, 30% hydrogen peroxide is directly catalyzed for epoxidation of fatty acid methyl ester, an intermediate product is not separated, and the by-product glycerin is added for ring opening of alkoxylation after direct heating-up; and finally, filtration is carried out to recycle the catalyst, and reduced pressure distillation is carried out to remove water so as to obtain biological oil-based polyol. According to the method, waste grease is used as a raw material, thus turning waste into wealth. The polyol product obtained has good biodegradability; the preparation process is green; emission of three industrial wastes is low; product structure and hydroxyl value can be adjusted; the range of application is wide; and the level of effect on the environment is low.

A process for producing a glyceride product which is enriched in monounsaturated fatty acids relative to the starting glyceride comprising the steps: (a) alcoholysis of triglycerides employing lipolytic enzymes selective for saturated fatty acids and / or lipolytic enzymes selective for the 1-position, the 3-position or both positions in a glyceride; and (b) separation of fraction A which is enriched in saturated fatty acid esters from fraction B which is enriched in monounsaturated glycerides.

The invention relates to a method for preparing for vitamin E leukotrienes ester and vitamin E oleate. It is characterized in that the oleic acid, linoleic acid or the leukotrienes dose esterification reaction and then reacts with the vitamin E Eoleate or vitamin E leukotrienes ester. The esterification reaction of the oleic acid, linoleic acid or the leukotrienes adopts chloride synthesis method, the anhydride synthesis method and the ester exchange synthesis method to prepare.

The invention discloses a preparation method of an unsaturated fatty acid-ester typediesel antiwear agent. The method includes adding glycerin, a fatty acid type diesel antiwear agent and a glycerin and manganese chloride complex into a reaction kettle for uniform mixing according to the mass ratio of 100-200:100:5-15. The reusable homogeneous glycerin and manganese chloride complex serving as a catalyst is adopted, reaction time is short, catalytic efficiency is high, both glycerin and the catalyst which are unreacted are recyclable, the non-acid non-basic homogeneous catalyst is used during preparation, product quality is improved beneficially, no wastewater is discharged in subsequent treatment processes, and requirements of national environmental protection are met.

A polyolefin composition containing elastomers (plasticizers), crystalline polypropylene, modified by mixing with polybutene-1 and a coupling agent and a bicyclic dicarboxyl acid salt nucleating agent and / or a lubricant which comprises an unsaturated fatty acid ester which acts as a surface modifier in a molded article is described. The composition is adapted to be used with pigments to make finished molded articles which have an appearance of paint covered by a clear coat and which are scratch resistant and have good low temperature (−30° C.) impact properties.

A process for producing a glyceride product which is enriched in monounsaturated fatty acids relative to the starting glyceride comprising the steps: (a) alcoholysis of triglycerides employing lipolytic enzymes selective for saturated fatty acids and / or lipolytic enzymes selective for the 1-position, the 3-position or both positions in a glyceride; and (b) separation of fraction A which is enriched in saturated fatty acid esters from fraction B which is enriched in monounsaturated glycerides.

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%.

The invention discloses environment-friendly solvent-free polyurethane for synthetic leather. The polyurethane comprises base cloth, a water-based surface layer, a water-based adhesive layer, a foaming layer and a functional auxiliary agent, wherein the water-based surface layer comprises water-based polyurethane emulsion, a thickening agent, a water-based defoaming agent, water-based color pasteand a leveling agent; the water-based adhesive layer comprises water-based polyurethane emulsion, a water-based polyurethane crosslinking agent and water-based color paste; the foaming layer comprisesa polyol compound, white carbon black, an organometallic catalyst, hydroxyl silicone oil, fatty acid, an organic amine catalyst, a filler and toluene diisocyanate; and the functional auxiliary agentcomprises sorbitol, maltitol, oligosaccharide, glycerin saturated fatty acid ester, a coloring agent and a surfactant. The environment-friendly solvent-free polyurethane for the synthetic leather is clean and environment-friendly; the foaming layer is free of an organic solvent, so that the polyurethane is more environment-friendly and environmental protection and sustainable development are facilitated; and meanwhile, the polyurethane has the relatively good toughness.

This invention provides: a new imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and the 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. 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.

Provided are a polybutylene terephthalate resin composition which is excellent in mold releasability and which can suppress deterioration in molding stability and aggregation of the polybutylene terephthalate resin composition due to blooming of a mold release agent; and a pellet thereof. The polybutylene terephthalate resin composition contains 0.01 to 5.0 parts by mass of (B) a saturated fatty acid ester of a polyglycerol represented by formula (I) described below with respect to 100 parts by mass of (A) a polybutylene terephthalate resin. In formula (I), R1s each may be the same or different and are C19-30 saturated aliphatic acyl groups, and n is an integer from 1 to 10.