15 results about "Glycerol formal" patented technology

The utility model discloses a reaction kettle for preparing stabilized glycerol formal, and particularly relates to the technical field of reaction kettles.The reaction kettle comprises a support, the top of the support is fixedly connected with a tank body, the top of the support is provided with a motor, the outer wall of a first transmission rod is provided with a driver, the outer wall of a transmission gear is connected with a gear ring in a meshed mode, and the gear ring is connected with a gear shaft. An inner container is fixedly connected to the inner wall of the gear ring, a stirring rod is fixedly connected to the outer wall of the second transmission rod, and a stirring ring is fixedly connected to the outer wall of the first transmission rod. According to the reaction kettle for preparing the stabilized glyceryl formal, through the arrangement of a driver, a transmission gear and a scraping plate, a worker can conveniently and rapidly clean a glyceryl formal raw material attached to the inner wall of the inner container, and meanwhile, the situation that part of the glyceryl formal preparation raw material is attached to the inner wall of the reaction kettle is prevented; furthermore, the subsequent preparation quality of the glyceryl formal is guaranteed, and the stability of the whole device for preparing the glyceryl formal is improved.

The invention discloses a synchronous green extraction method for salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in salvia miltiorrhiza, which comprises the following steps: crushing the salvia miltiorrhiza into powder, and adding a bio-based solvent into the salvia miltiorrhiza powder for ultrasonic-assisted extraction. According to the synchronous green extraction method of salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in salvia miltiorrhiza, provided by the embodiment of the invention, when the extraction solvent is glycerol formal / levulinic acid (57.8 / 42.2, v / v), the liquid-solid ratio is 15mL / g, the ultrasonic extraction temperature is 35 DEG C, the ultrasonic extraction time is 30min and the ultrasonic power is 360W, the content of salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in salvia miltiorrhiza can be effectively reduced, and the extraction efficiency is improved. The extraction rate of salvianolic acid is 85.18 (mg / g), the extraction rate of tanshinone I is 0.347 (mg / g), the extraction rate of tanshinone is 1.120 (mg / g), and the extraction rate of tanshinone IIA is 0.931 (mg / g), which are significantly higher than those of traditional methanol and ethanol. Therefore, according to the method provided by the invention, the salvianolic acid B, the tanshinone I, the cryptotanshinone and the tanshinone IIA are extracted from the radix salviae miltiorrhizae, the efficiency can be effectively improved, the use of organic solvents methanol and ethanol is avoided, and the method is more environment-friendly.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a glycerol modified mesoporous SBA-15 loaded phosphorus and aluminum AlPx / SBA-15-GL solid acid catalyst synthesized by an impregnation method. The preparation method comprises the following steps: firstly, dissolving a template agent in hydrochloric acid to obtain a template agent-hydrochloric acid solution; uniformly mixing a silicon source and glycerol to obtain a precursor; the preparation method comprises the following steps: mixing a precursor with a template agent-hydrochloric acid solution, carrying out co-assembly treatment, aging treatment, drying and stepped roasting to obtain glycerol modified mesoporous SBA-15, taking the glycerol modified mesoporous SBA-15 as a carrier, preparing an AlPx / SBA-15-GL series catalyst through an impregnation method, synthesizing glycerol acetal in the reaction of formaldehyde and glycerol acetal by using the catalyst, and carrying out solid-liquid separation to obtain the AlPx / SBA-15-GL series catalyst. The catalyst has excellent conversion rate and excellent stability.

The invention belongs to the technical field of soldering flux, and particularly relates to high-wettability no-clean environment-friendly soldering flux and a preparation method thereof.The high-wettability no-clean environment-friendly soldering flux is prepared from, by mass, 65-80% of organic solvent, 5-9% of film-forming agent, 0.5-2% of environment-friendly surfactant, 0.1-0.5% of stabilizer and 5-8% of compound type active agent, the organic solvent is composed of glycerol formal, isopropanol and polyethylene glycol monomethyl ether, and the film-forming agent is composed of glycerol, isopropanol and polyethylene glycol monomethyl ether. The film-forming agent comprises modified rosin and polyvinylpyrrolidone, the composite active agent is composed of succinic acid, triethanolamine formate and modified nano SiO2, and the mass ratio of the succinic acid to the triethanolamine formate to the modified nano SiO2 is 3: (1.5-2.5): 1; the sum of the mass percentages of all the components is 100%. According to the formula, the technical problem that the high-wettability no-clean environment-friendly soldering flux cannot be provided in the prior art is solved.

The present invention relates to a process for producing a FAGE-based biofuel composition, the process being characterized by an enzymatic transesterification of fatty acid alkyl esters with glycerol formal. The invention is also directed to the biofuel composition obtained by said process as well as to the uses thereof.

The invention provides a veterinary ciprofloxacin lactate injection, which belongs to the field of veterinary pharmaceutical preparations. The veterinary ciprofloxacin lactate injection uses water for injection as a solvent and comprises components with the following concentrations: 2.5-12.7 g / 100 mL of ciprofloxacin lactate, 10-30 mL / 100 mL of propylene glycol, 10-30 mL / 100 mL of glycerol, 0.5-2 mL / 100 mL of lactic acid, 2-20 g / 100 mL of a beta-cyclodextrin derivative, 5-20 mL / 100 mL of glycerol formal, 0.5-2 mL / 100 mL of benzyl alcohol, 0.5-1.5 g / 100 mL of sodium chloride, and 0.005-0.5 g / 100 mL of an antioxidant; and the degree of substitution of the beta-cyclodextrin derivative is 2-12. The veterinary ciprofloxacin lactate injection of the present invention has high concentration and strong stability, can remain stable at room temperature or even low temperature, and meets the relevant quality requirements of the veterinary drug quality standards (2017 edition).

The invention relates to the technical field of label adhesives, and particularly discloses a multifunctional label adhesive and a preparation method thereof. The multifunctional label adhesive comprises the following components in parts by mass: 100 parts of a solvent; 10 to 12 parts of polyvinyl alcohol; 10 to 12 parts of N-hydroxymethyl acrylamide; 0.05 to 0.06 part of an initiator; 0.4 to 0.6 part of glycerol formal; 9-12 parts of a modifier; and the modifier is a compound of dodecyl hydroxy sulfobetaine, hexadecyl trimethyl ammonium chloride and tristyrylphenol polyoxyethylene ether. The invention has the advantage that the strength of the adhesive is not easy to decrease at high temperature.

The application discloses a synchronous green extraction method of salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in Danshen, which comprises the following steps: crushing Danshen into powder, and adding a bio-based solvent to the Danshen powder for ultrasonic-assisted extraction. When the extraction solvent is glycerol formal / acetic propionic acid (57.8 / 42.2, v / v), the liquid-solid ratio is 15 mL / g, the ultrasonic extraction temperature is 35 DEG C, the ultrasonic extraction time is 30 min, and the ultrasonic power is 360 W, the extraction rate of salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in Danshen is 85.18 (mg / g), 0.347 (mg / g), 1.120 (mg / g) and 0.931 (mg / g) respectively, which is significantly higher than that of traditional methanol and ethanol. Therefore, the method provided by the application can effectively improve the extraction efficiency of salvianolic acid B, tanshinone I, cryptotanshinone and tanshinone IIA in Danshen, avoid the use of organic solvents such as methanol and ethanol, and is more green and environment-friendly.

The present invention relates to the use of esters from vegetable oils for the production of polymers having antimicrobial activity, polymeric materials and articles. The present invention provides the use of plasticizers based on fatty acid esters of glyceroformal for the production of polymers having antimicrobial properties. The invention allows the production of articles with PVC, polyurethane, epoxy resins, SBR and NBR rubbers and other polymers, which articles have the ability to disrupt viruses and bacteria deposited on their surfaces.

The invention relates to the use of fatty acid esters of glycerol formal as processing oils for producing synthetic elastomers, elastomer compositions and tire treads. The present invention provides the use of C8-C18 fatty acid esters of glycerol formal as processing oils for the production of synthetic elastomers. The invention also provides its use in the production of tire treads as well as medical devices such as condoms and medical gloves, which can provide better performance characteristics. Furthermore, the invention relates to elastomer compositions comprising these fatty acid esters, and to tire treads comprising such elastomer compositions.

The invention discloses dicyclanil double-layer coated microcapsule suspension. Every 100 g of the dicyclanil double-layer coated microcapsule suspension is prepared from the following components by weight: 0.01 to 2.0 g of dicyclanil, 1.0 to 4.0 g of guinea butter, 0.1 to 1.0 g of ethyl oleate, 5.0 to 10.0 g of polyoxyethylene (8) stearate, 15.0 to 35.0 g of an emulsifier OP-10, 0.5 to 1.5 g of karaya gum, 0.01 to 0.6 g of sclerotium glucan, 4.0 to 10.0 g of glycerol formal and the balance of deionized water. Meanwhile, the invention further discloses a preparation method of the microcapsule suspension, the process operability is high, after the medicine is subjected to double-layer coating treatment, the validity period is remarkably prolonged, the medicine effect is improved, the safety is better, and the market application prospect is wide.

The present invention relates to a process for producing a FAGE-based biofuel composition, the process being characterized by an enzymatic transesterification of fatty acid alkyl esters with glycerol formal. The invention is also directed to the biofuel composition obtained by said process as well as to the uses thereof.

The invention discloses a tebuconazole nano dispersion emulsion in water and a preparation method thereof, and relates to the technical field of pesticide preparation processing. The prepared tebuconazole nano dispersion emulsion in water is prepared from the following raw materials in parts by mass: 25 to 29 parts of tebuconazole active compound, 43 to 47 parts of cosolvent, 20 to 25 parts of emulsifier, 0 to 2 parts of stabilizer and 3 parts of solvent water, wherein the cosolvent is one or a combination of more of a rosin-based vegetable oil modified solvent ND-45, dipropylene glycol monomethyl ether, diethylene glycol monoethyl ether, glycerol formal, a biodegradable solvent WPD, benzyl alcohol, acetophenone and N-octyl pyrrolidone; the emulsifier is one or a combination of more of 3225, 3225 to TB01, 3225 to TB03, 3225 to 50 parts of 3225 and 322 to 60 parts of 322; the water emulsion dispersing agent prepared by the invention is simple to process and operate and friendly in component, and has good application prospect and practical significance.

The invention discloses a compound sulfamonomethoxine sodium injection. Every 100 ml of the compound sulfamonomethoxine sodium injection is prepared from 17 g to 23 g of sulfamonomethoxine sodium, 3.8 g to 4.3 g of trimethoprim, 0.12 g to 0.15 g of sodium thiosulfate, 0.24 g to 0.28 g of sodium hydroxide, 30 g to 50 g of polyethylene glycol-400, 10 g to 15 g of glycerol formal and the balance of water for injection. The compound sulfamonomethoxine sodium injection is high in content and good in stability, and compared with a low-content injection, the compound sulfamonomethoxine sodium injection can reduce the dosage and avoid animal stress; the irritation of an injection part can be reduced, and animals recover faster; the injection liquid suction difficulty can be reduced, the injection time is shortened, and medication is more convenient and faster; and the packaging cost can be reduced, the manpower and material resource cost of medication is reduced, resources are saved, and the environment is protected.

The invention relates to the technical field of polymer laminated materials, in particular to a PVB-PU laminated material as well as a preparation method and application thereof. The method comprises the following steps: carrying out low-temperature plasma treatment on a PVB (Polyvinyl Butyral) sheet to obtain an activated PVB sheet of which the surface is rich in active oxygen-containing groups; the preparation method comprises the following steps: mixing amino modified polyether polyol, diisocyanate, a composite cross-linking agent (glyceryl formal and pentaerythritol triacrylate) and a catalyst to obtain a PU composite system; and coating the surface of the activated PVB sheet with the PU composite system, and carrying out curing treatment to obtain the PVB-PU laminated material. The PVB surface is subjected to low-temperature plasma activation, a PU composite system formed by combining amino-modified polyether polyol and the composite cross-linking agent is adopted, chemical-physical synergistic high-strength interface bonding is achieved under the low isocyanate group / hydroxyl proportion, and meanwhile the weather resistance, the optical performance and the process stability of the material are remarkably improved.