13 results about "Syringaldehyde" patented technology

The invention belongs to the technical field of microcapsule corrosion inhibitors, and discloses a microcapsule corrosion inhibitor with pH response and slow release effects and a preparation method and application thereof. The method comprises the following steps: 1) preparing syringaldehyde modified methionine; (2) preparing the octenyl succinic anhydride modified chitosan; 3) dissolving the octenyl succinic anhydride modified chitosan in an acetic acid solution to serve as an internal water phase, and dissolving polylactic acid and syringaldehyde modified methionine in an organic solvent to serve as an oil phase; mixing the internal water phase and the oil phase, and performing ultrasonic treatment to obtain a primary emulsion; polyvinyl alcohol and water are mixed to serve as an outer water phase; adding the external water phase into the primary emulsion, and stirring to obtain a final emulsion; and removing the solvent, removing impurities and drying to obtain the microcapsule. The microcapsule corrosion inhibitor disclosed by the invention has a continuous and stable slow release effect, excellent encapsulation performance and relatively good corrosion resistance and pH response. The corrosion inhibitor disclosed by the invention is used for metal corrosion prevention and anticorrosive paint.

The invention discloses low-caffeine nerve stimulation tea wine and a preparation method thereof, the low-caffeine nerve stimulation tea wine is prepared by blending eucommia wood aged tea wine, cherry wood aged tea wine and cherry wood / Hainan dalbergia odorifera wood aged tea wine with different baking degrees, and the mass ratio of geniposidic acid to salidroside to formononetin in the wine body is (2-30): (1-15): 1. The mass ratio of the genkwanin to the alpinia japonica to the sesamol is (0.5-8): (0.15-6): 1, the mass ratio of the isoliquiritigenin to the vitexin to the syringaldehyde is 1: (0.15-5): (4-18), and the total content of the geniposidic acid, the salidroside, the formononetin, the genkwanin, the alpinia japonica, the sesamol, the isoliquiritigenin, the vitexin and the syringaldehyde in the wine is 40-250 mg / 100 mL. By combining and matching the functional components in the wood and the proportion of the functional components, the antagonistic effect on caffeine nerve stimulation in the tea wine is achieved.

The invention discloses a degradable environment-friendly flame retardant and a preparation method thereof, and relates to the technical field of flame retardant materials, the degradable environment-friendly flame retardant comprises a three-dimensional dynamic covalent network structure formed by cross-linking cystamine-syringaldehyde Schiff base and phytic acid-syringaldehyde ester; the three-dimensional dynamic covalent network structure is loaded with manganese ions coordinated with phosphate groups in a post-introduction mode, through a phytic acid-cystamine-manganese ion ternary synergistic flame-retardant system, the flame-retardant property is remarkably improved, and meanwhile, based on a triple degradable response mechanism of imine bonds, ester bonds and disulfide bonds, the flame-retardant property is remarkably improved. And the material is endowed with excellent degradability.

This invention relates to the field of functional food technology, and more particularly to the application of safflower honey, or safflower honey extract, in enhancing the activity of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH). The invention has found that safflower honey, or safflower honey extract, can effectively enhance ADH and ALDH activity, thereby promoting alcohol metabolism and achieving a hangover-relieving effect. Further research on the extract revealed that a mixture of syringaldehyde, riboflavin, lutein, luciferin, and three p-coumaroyl spermidine plays a key role in enhancing ADH and ALDH activity, thus providing an application of this mixture in hangover relief. The application of safflower honey and its extract provided by this invention has high application value for developing foods and health products with hangover-relieving effects.

The present application relates to a kind of ammonium chloride calcium stick, belong to the technical field of feed.The ammonium chloride calcium stick includes the following components: calcium chloride, calcium sulfate, ammonium chloride, vitamin B6, modified cysteine, syringaldehyde, vitamin D3, sodium tripolyphosphate and solvent.Sodium tripolyphosphate maintains the stability of vitamin D3 and vitamin B6, wherein vitamin B6 inhibits prolactin synthesis, vitamin D3 promotes calcium absorption, prevents low blood calcium and excessive mammary secretion.The present application modifies cysteine by eugenol, increases its stability and dispersibility, and forms electrostatic interaction with sodium tripolyphosphate, forms a stable crosslinking network structure, increases the binding force between the coating layer and the raw material, prevents the loss of effective dry milk ingredients, and achieves better dry milk effect.

The invention provides a halogen-free phosphorus flame retardant as well as a preparation method and application thereof, and belongs to the technical field of flame retardants. The preparation method comprises the following steps: mixing a hydroxyl-containing compound, an acid-binding agent and an organic solvent to obtain a mixed solution; dropwise adding pyrophosphoryl chloride into the mixed solution, and reacting to obtain a reaction product; and carrying out post-treatment on the reaction product to obtain the halogen-free phosphorus flame retardant. The hydroxyl-containing compound comprises one or more of epoxy butanol, glycidol, syringaldehyde, vanillin and p-hydroxybenzaldehyde. The halogen-free phosphorus-based flame retardant disclosed by the invention is a flame retardant with a new structure and has an epoxy group capable of participating in a co-curing reaction of epoxy resin; the preparation method of the flame retardant is simple, the flame retardant is prepared from hydroxyl-containing compounds such as glycidol and pyrophosphoryl chloride under the action of an organic solvent and an acid-binding agent through a one-step synthesis method, and a target object can be conveniently and rapidly prepared.

The invention provides an electrochemical method for pairwise synthesizing syringic acid and adiponitrile. The method comprises the following steps: 1) mixing syringaldehyde, an alkaline electrolyte, an alcohol solvent, an alkyl glycoside surfactant and water, and adding the mixture into an anode chamber of an electrolytic cell; (2) acrylonitrile, phosphate, borate, a quaternary ammonium base surfactant and water are mixed and added into a cathode chamber of the electrolytic cell; and 3) heating the electrolyte in the cathode chamber and the anode chamber of the electrolytic cell, then carrying out an electrolytic reaction, carrying out electrochemical oxidation on syringaldehyde at the anode to synthesize syringic acid, enabling hydrated hydrogen ions to enter the cathode chamber across a membrane, and synthesizing adiponitrile with acrylonitrile at the cathode. The syringic acid synthesis method is clean, environmentally friendly and low in cost, meanwhile, the problem of anode corrosion in the operation process of electrosynthesis of adiponitrile is solved, and the tail gas safety risk caused by oxygen evolution of an anode for synthesis of adiponitrile is eliminated. The method has the advantages of simple steps, high total product yield, low equipment investment, low operation risk, mild reaction conditions, less three wastes and low energy consumption, and is suitable for wide industrial application.

The invention relates to a photocatalytic flow method for the selective fragmentation of lignin, comprising: (i) immobilising a photocatalyst on a support forming a bed, and introducing the support with the immobilised photocatalyst into a column that is transparent to radiation; (ii) and continuously circulating a lignin solution through the column packed with the bed, under illumination, to cause the fragmentation of the lignin, yielding vanillin and syringaldehyde, and such that the method is carried out continuously.

The invention relates to the technical field of silicone rubber tackifiers, in particular to a bio-based tackifier, a silicone rubber composition and a preparation method of the silicone rubber composition. According to the technical scheme, the bio-based monomer serves as an initial raw material, dependence on traditional fossil resources is reduced, and the requirement for sustainable development can be met; a chain segment containing a plurality of ether groups is obtained through acetalation reaction of vanillin or syringaldehyde and pentaerythritol, has higher polarity and can form stronger intermolecular force with the surface of metal or engineering plastic. On the basis, vanillin or syringaldehyde and pentaerythritol acetalation reaction products are allylated and then subjected to hydrosilylation with a hydrogen-containing ring body or hydrogen-containing silane, so that the bio-based tackifier containing active Si-H bonds is obtained, the bio-based tackifier containing the active Si-H bonds contains a plurality of ether bonds, the subsequent hydrosilylation reaction cannot be interfered, and the viscosity of the bio-based tackifier is improved. And enough polarity can be provided, so that the interface bonding performance is improved.

The invention discloses a Schiff base as a low-carbon steel corrosion inhibitor and a preparation and use method thereof, and the preparation method of the Schiff base comprises the following steps: a) respectively dissolving syringaldehyde and 1, 4-phenylenediamine in ethanol according to a ratio of 4.1736: 1.2388 to form a first solution and a second solution; b) under the stirring condition of 25 DEG C, dropwise adding a second solution dissolved with 1, 4-phenylenediamine into the first solution through a constant-pressure dropping funnel; c) after dropwise adding, continuously performing reflux reaction at 25 DEG C for 4 hours, and separating out a yellow solid; and d) filtering, washing with acetonitrile, and drying to obtain syringaldehyde-1, 4-phenylenediamine Schiff base (SPSB), which forms a coordinate bond with metal through two N atoms to form a compact adsorption protective film. Syringaldehyde and phenylenediamine are used as raw materials, phosphorus-free and sulfur-free SPSB is prepared, a compact chelation protection film is formed on the surface of low-carbon steel through dinitrogen-oxygen multipoint coordination, the functions of anode barrier and cathode hydrogen inhibition are achieved, and efficient and lasting mixed corrosion inhibition is achieved.

The invention discloses a UHPLC-MS / MS (Ultra High Performance Liquid Chromatography-Mass Spectrometry / Mass Spectrometry)-based multi-component content determination method for a compound radix scutellariae throat-clearing capsule, which is characterized in that a multi-component simultaneous quantitative analysis method is established by adopting a UHPLC-MS / MS technology, and the quality of the compound radix scutellariae throat-clearing capsule is evaluated from the quantitative aspect. 21 components including p-hydroxybenzaldehyde, vanillin, caffeic acid, syringaldehyde, citric acid, tanshinol, chrysin, baicalein, genistein, quercetin, chlorogenic acid, neochlorogenic acid, rosmarinic acid, harpagide, puerarin, apigenin-7-O-beta-D-glucoside, baicalin, oleanolic acid, scutellarin, glycyrrhetinic acid and harpagoside are selected as quantitative indexes; and determining the content of the compound radix scutellariae throat-clearing capsule. According to the method, the contents of 21 components in the compound radix scutellariae throat-clearing capsule can be accurately measured at the same time within 14 min, and the method has good precision and stability.

The invention provides a KpADH alcohol dehydrogenase mutant and application of the KpADH alcohol dehydrogenase mutant in syringol synthesis, under the condition that a recombinant expression vector pET28a-KpADH is used as a template, the 165 site and the 231 site of KpADH alcohol dehydrogenase with the amino acid sequence as shown in SEQ ID NO.1 are subjected to single-point or double mutation, and the KpADH alcohol dehydrogenase mutant is obtained. The mutant shows an enhanced catalytic rate. Wherein the KpADH alcohol dehydrogenase mutant C165F-V231D whole-cell catalyst can be used for reducing 20 mM of syringaldehyde into the syringyl alcohol within 24 hours, and the yield reaches 92.1 percent.

The application discloses a fire-retardant composite wood board and a preparation method thereof. The preparation method of the composite wood board comprises the following steps: immersing single-layer wood boards in an aqueous solution containing a first fire retardant and dicyandiamide, drying the single-layer wood boards, and then bonding and pressing the single-layer wood boards by using an adhesive to obtain the fire-retardant composite wood board. The first fire retardant is prepared by the following steps: S1, reacting 1,2-bis(chlorodimethylsilyl)ethane with syringaldehyde in a first organic solvent to obtain an intermediate A; S2, reacting the intermediate A with tyrosine in a second organic solvent to obtain an intermediate B; and S3, mixing and reacting the intermediate B and phosphorous acid to obtain the first fire retardant. The first fire retardant can form a covalent bond with the wood board, and the fire-retardant property of the treated wood board is significantly improved. Meanwhile, the second fire retardant in the adhesive can achieve a synergistic effect with the first fire retardant impregnated on the wood board, so that the prepared composite wood board has an ultimate oxygen index of more than 60%.