9 results about "Organic Ester" patented technology

This invention provides a degradation process for composite polyester materials, relating to the field of polyester recycling technology. The degradation process involves depolymerizing a reaction system comprising at least raw material components (i) composite polyester material, (ii) organic ester compounds, (iii) a co-solvent, and (iv) an alkaline catalyst at a temperature not exceeding 100°C; the weight ratio of the co-solvent to the organic ester compound is ≥0.5. By adding a certain amount of co-solvent to the depolymerization system, this invention achieves directional depolymerization of polyester-containing composite polyester materials while essentially preventing depolymerization of other materials, such as spandex and nylon.

This invention relates to the field of adsorption separation technology, specifically to an adsorbent for selectively adsorbing organic esters from industrial wastewater and its preparation method. The adsorbent contains polar functional groups capable of adsorbing organic esters and does not contain hydroxyl or carboxyl groups; the adsorbent's adsorption capacity for organic esters is not less than 12% of its total weight, and the density of the adsorbent is 0.5-1.2 g·cm³. ‑3 The adsorbent of this invention contains abundant polar functional groups, exhibiting strong selectivity for organic esters. This effectively avoids competitive adsorption of other molecules in the solution at the active sites, thus improving the purity of the recovered product. Under high liquid hourly space velocity (HLH), the adsorbent of this invention can purify the concentration of organic esters in the solution to below 1000 ppm.

This invention discloses a bone hemostatic and repair material, its preparation method, and its application, belonging to the field of medical materials technology. The bone hemostatic and repair material provided by this invention comprises the following raw materials: organic ester compounds, organic acids, and borosilicate bioglass; the organic acids include at least one selected from oleic acid, linoleic acid, palmitic acid, and lauric acid; the organic ester compounds include at least one selected from palmitic acid glyceride, oleic acid glyceride, monolauric acid glyceride, and dilauric acid glyceride. The bone hemostatic and repair material proposed in this invention can effectively stop bleeding, and can also be absorbed by the body after surgery while promoting bone tissue healing, reducing adverse reactions and complications. This invention also discloses the preparation method and application of the above-mentioned bone hemostatic and repair material.

This invention provides a gardenia meal genipin derivative complex with sustained-release hypoglycemic activity, its preparation method, and its application. The complex consists of a core and a shell: the core is a hydrophobic complex formed by genipin-organic ester derivative and resistant starch, wherein the genipin-organic ester derivative is generated in situ by ultra-finely pulverizing gardenia meal to 400-500 mesh, inoculating it with a compound microbial agent, and fermenting it at pH 4.2-4.8 for 4-6 days; the shell is a hydrophilic gel layer formed by konjac glucomannan; the mass ratio of the core to the shell is (5-7):(3-5). This invention utilizes the enhanced lipid solubility of genipin derivatives to construct a dual sustained-release structure of "hydrophobic core-hydrophilic shell," exhibiting zero-order release characteristics in simulated gastrointestinal fluid, with a cumulative release rate >85% over 8 hours and a gastric release rate <15%. Animal experiments show that noodles containing the complex of this invention can reduce postprandial blood glucose AUC in diabetic mice by 41.9%, with an effective hypoglycemic time of 7.5 hours.

Compositions comprising: (a) from 0.05% to 50% by weight of at least one amorphous poly-alpha-olefin (APAO) having chains with an average maximum end-to-end distance (Rmax) greater than or equal to 1.6*10-6 m; (b) from 35% to 95% by weight of a liquid phase selected from: vegetable oils, synthetic organic esters, linear or branched saturated hydrocarbons, aromatic hydrocarbons, and mixtures thereof; (c) from 0 to 15% by weight of an anti-sticking agent; the weight percentages being calculated on the basis of the total weight of the composition. The APAOs are obtained by a polymerization process of at least one alpha-olefin monomer, carried out at a temperature not higher than 40°C, by using a catalytic system comprising (i) a bimetallic catalyst containing: titanium in the oxidation state +3 (Ti(III)), and optionally titanium in the oxidation state +4 (Ti(IV)); and at least one metal selected from hafnium in the oxidation state +4 (Hf(IV)) and zirconium in the oxidation state +4 (Zr(IV)); and (ii) at least one organoaluminum co-catalyst. Such compositions have a drag reduction effect higher than that achieved by using amorphous poly-alpha-olefins synthetized by means of conventional Ziegler Natta catalytic systems containing only titanium and aluminum as metals.

The present application relates to liquefied gas desulfurization technical field, it is a kind of high sulfur-containing liquefied gas desulfurizer and its preparation and use method, the raw material of the high sulfur-containing liquefied gas desulfurizer includes sulfone compound 1% to 10%, antioxidant 0.5% to 2%, emulsifier 0.001% to 0.02%, water-soluble base 0.01% to 10%, organic ester 1% to 10%, the balance is water according to mass fraction.The high sulfur-containing liquefied gas desulfurizer and its preparation and use method provided by the present application, desulfurizer raw material is conventional, easy to obtain, preparation process is simple, removal effect is good, energy consumption is low, easy to realize industrial production.The desulfurization method using the desulfurizer, operation method is simple, energy consumption is small, does not produce three wastes, and economic efficiency is good.

The application provides a sand mold prepared by a high-strength cold-box process, a preparation method and application thereof, and belongs to the technical field of casting. The method comprises the following steps: mixing phenol with an alkaline solution, adding a formaldehyde solution, and performing reaction under temperature rise; after a period of reaction, an alkaline solution, water and an additive are added under temperature drop to obtain a phenol-formaldehyde resin solution; the phenol-formaldehyde resin solution is mixed with a refractory material to obtain a mixture; a curing agent is heated and gasified, and then blown into the mixture through a core shooting machine to obtain a sand mold, wherein the curing agent is a formic acid ester curing agent; the molar ratio of the alkaline substance in the alkaline solution to the phenol is 0.2-0.5:1; the formic acid ester curing agent is a compound with 2-5 carbon atoms; the sand mold can greatly improve the safety of the alkaline phenol-formaldehyde resin cold-box method, avoid explosion and fire hazards caused by organic ester gasification in the production process of the sand mold, ensure safe production, and improve the quality of the sand mold with a new type of curing agent.