255 results about "Glutaric acid" patented technology

The invention relates to an engineering bacterium of high-yield ornamental blue as well as a construction method and application of the engineering bacterium, and belongs to the technical field of natural dye synthesis by a biological method. The engineering bacterium capable of highly producing the ornamental blue, disclosed by the invention, expresses icd, bpsA, glnAY405F and gd hA; acnR, yggB, glsK, aceA and ldh are knocked out from the engineering bacteria. According to the application, yggB and aceA genes are knocked out, site-directed mutagenesis (Y405F) is carried out on a glnA gene, a glsK gene is replaced by a glnAY405F gene, an acnR gene is replaced by an icd gene, an ldh gene is replaced by a gdhA gene, and a bpsA gene is integrated, so that the formation of by-products such as lactate and succinic acid in a blue-viewing synthesis process can be blocked; the flow direction of a passage from citric acid to isocitric acid to alpha-ketoglutaric acid to glutamic acid to glutamine is improved, so that the concentration of glutamine in cells is improved, and the yield of the ornamental blue is improved.

The invention discloses a nylon elastomer preparation method, which comprises: S1, weighing preparation raw materials of a nylon elastomer according to a feeding ratio, and weighing the preparation raw materials by using a weighing device, the nylon elastomer is prepared from the following raw materials: tridecane diamine, tridecane dibasic acid, dodecanediamine, dodecanedioic acid, undecanediamine, undecanedioic acid, decamethylene diamine, sebacic acid, pentamethylene diamine, glutaric acid, hexamethylenediamine, adipic acid, caprolactam, and one or more of polyether amine and polyether alcohol; and S2, feeding the preparation raw materials weighed in the step S1. In the preparation process of the nylon elastomer, the nylon elastomer with different melting points, different crystallization temperatures, different strengths and different elongation at break is produced by adopting a multi-component copolymerization mode and adjusting the types and the molecular weights of polyether amine and polyether alcohol by adjusting the types and the proportions of binary acid and diamine, so that the nylon elastomer is suitable for different use environments; the utilization rate is improved.

The invention belongs to the field of bioengineering, and particularly discloses a glutamate oxidase mutant with improved enzymatic activity. According to the invention, site-specific mutagenesis and saturation mutation are carried out on glutamate oxidase coding genes derived from streptomyces mobaraensis, wherein mutations are C536R, P532R, Q378D, V548E and G236D. After the mutant obtained by the invention is induced and purified, the specific enzyme activity of the optimal glutamate oxidase mutant is 1.69 U / mg and is improved by about 30% compared with that of wild bacteria, which shows that the 378-site amino acid residue has great influence on the catalytic action and stability of the enzyme. In addition, the invention also discloses a construction method of the glutamate oxidase mutant with improved enzymatic activity and application of the glutamate oxidase mutant in production of amino acid derivatives such as alpha-ketoglutaric acid. Therefore, the beneficial mutant provided by the invention can lay a good foundation for industrial fermentation production of alpha-ketoglutaric acid and other products.

The invention provides a chiral resolution method and application of a 3-aryl substituted glutaric acid monoester compound, and the method comprises the following steps: taking a substance as shown in a formula I as a starting raw material, and carrying out alcoholysis to obtain a racemic intermediate as shown in a formula IV; and splitting the intermediate shown in the formula IV, and then dissociating to obtain the compound shown in the formula III, which has a single spatial configuration and an ee value of more than 99%. A cyclic anhydride substrate with a symmetrical structure is used and reacts with alcohol to obtain racemic 3-aryl substituted glutaric acid monoester, a target configuration with high chiral purity is obtained by screening some resolution reagents and solvents and performing salifying resolution on the 3-aryl substituted glutaric acid monoester, the operation is simple, the resolution reagents are easily available in the market and can be recycled, and the method is suitable for industrial production. The method has the advantages that an expensive chiral catalyst or a harsh enzyme catalysis condition is avoided, the reaction cost is reduced, amplified production is facilitated, the ee value of a target configuration can be increased to 99% or above, and the method is an economic and environment-friendly technical route which is simple in post-treatment and convenient for amplified production.

Provided is a glutamic or glutaric acid-based ionizable lipid compound of Formula (I) or a pharmaceutically acceptable salt thereof. The compound can be used to obtain lipid nanoparticles. In some embodiments, the lipid nanoparticle can comprise (a) from about 40 to about 100 mol % of the compound of Formula (I); (b) from 0 to about 20 mol % of a neutral lipid; (c) from 0 to about 50 mol % of a helper lipid; (d) from 0 to about 5 mol % of a polymer-conjugated lipid; and (e) from 0 to about 10 mol % of a hydrophobic component; wherein the mol % are based on the total lipids present in the nanoparticle. In some embodiments, the ionizable lipid compound is a glutamic acid-based ionizable lipid compound.

The invention relates to the technical field of welding materials, and discloses washable semiconductor solder paste and a preparation method and application thereof. The washable semiconductor solder paste comprises scaling powder and tin powder, wherein the mass ratio of the scaling powder to the tin powder is 1: (8-9.6); the soldering flux comprises the following raw material components: a film-forming agent, composite organic acid, a thixotropic agent, a surfactant, an antioxidant and a solvent, wherein the composite organic acid is composed of succinic acid and glutaric acid according to the mass ratio of (1-3): (1-2.5). According to the washable semiconductor solder paste, the particle size, the melting point and the alloy components of the tin powder are controlled, composite organic acid composed of succinic acid and glutaric acid in a specific proportion is adopted in the soldering flux, and other components are matched with one another; the tin powder and the soldering flux in a specific mass ratio are combined, so that the prepared washable semiconductor solder paste is good in wettability, the expansion rate is larger than or equal to 85%, the storage life reaches 3 months, and the washable semiconductor solder paste can be directly cleaned with water after being welded and is high in corrosion resistance and oxidation resistance.

The application relates to an engineering bacterium for high yield of observation blue and a construction method and application thereof, and belongs to the technical field of biological synthesis of natural dyes. The engineering bacterium for high yield of observation blue expresses icd, bpsA, glnA Y405F and gdhA; the engineering bacterium knocks out acnR, yggB, glsK, aceA and ldh. By knocking out the yggB and aceA genes, performing site-directed mutation (Y405F) on the glnA gene, replacing the glsK gene with the glnA Y405F gene, replacing the acnR gene with the icd gene, replacing the ldh gene with the gdhA gene, and integrating the bpsA gene, the application can block the formation of by-products such as lactate and succinic acid in the observation blue synthesis process, improve the flow direction of the citric acid->isocitric acid->alpha-ketoglutaric acid->glutamic acid->glutamine path, and then improve the intracellular glutamine concentration, so that the yield of observation blue is improved.

The invention provides a plasmid, an alpha-ketoglutaric acid engineering strain and a construction method and application of the alpha-ketoglutaric acid engineering strain, the strain is obtained by adopting a directional transformation method, transcriptional levels of katE, katG, sodB and grxA genes are up-regulated, a catR gene and a katA gene are heterologously expressed, a high-copy plasmid pETKG is carried, and the plasmid simultaneously expresses L-glutamate oxidase LGOX genes from Streptomyces sp and Chain A; the strain self-synthesized catalase eliminates H2O2 generated in the process of producing alpha-ketoglutaric acid through enzyme catalysis, engineering bacteria of L-glutamate oxidase LGOX expressed by pETKG plasmids are used for performing whole-cell catalysis on L-sodium glutamate to synthesize alpha-ketoglutaric acid, and the engineering strain is a high-level engineering strain capable of industrially and stably producing alpha-ketoglutaric acid.

The invention relates to the technical field of fabrics, and discloses a cool antistatic comfortable fabric and a preparation method thereof.The cool antistatic comfortable fabric is obtained by reacting pentanebis (glycine), 1, 3-bis (3-glycidyl ether oxypropyl) tetramethyldisiloxane, epoxy chloropropane and the like to obtain an epoxy quaternization finishing agent and finishing a cotton fabric. The epoxy quaternization finishing agent contains a flexible siloxane structure, can improve the softness and wrinkle resistance of the cotton fabric, contains quaternary ammonium salt and carboxyl hydrophilic groups, enables the cotton fabric to keep good hydrophilicity and cool hand feeling, contains quaternary ammonium salt cations, can increase the conductivity of the surface of the cotton fabric, and improves the anti-wrinkle performance of the cotton fabric. The surface resistivity is reduced, so that the anti-static performance is improved, and the cotton fabric still keeps good soft anti-wrinkle performance and anti-static performance after being washed for multiple times.

The invention belongs to the technical field of health-care food, and particularly relates to a composition and oral drops with the effects of dispelling the effects of alcohol, protecting the liver and relieving hangover as well as a preparation method and application of the composition and the oral drops. The invention provides a composition taking silybin eutectic crystal, curcumin eutectic crystal, ampelopsis grossedentata extract, pyrroloquinoline quinone disodium salt, reduced glutathione, alpha-ketoglutaric acid, vitamin, hericium erinaceus extract, frankincense extract, licorice extract and the like as main active ingredients, and the composition is subjected to scientific formula screening and functional verification, and has the advantages that the composition has the obvious curative effect, and the curative effect is obvious; the traditional Chinese medicine composition can effectively improve the metabolism of ethanol, protect liver and gastric mucosa, and is helpful for relieving hangover-related symptoms such as fatigue, thirst, sleepiness, headache, dry mouth, stomachache, nausea, hypomnesis, inattention and the like.

The invention aims to disclose a special dietary preparation based on alpha-ketoglutaric acid as well as a preparation process and application thereof, and relates to the technical field of dietary supplements. Every 800 mg of the dietary preparation comprises 50 mg to 100 mg of alpha-ketoglutaric acid or alpha-ketoglutaric acid salt, 5 mg to 12 mg of N-acetylneuraminic acid or N-acetylneuraminic acid salt, 30 mg to 60 mg of ergothioneine, 100 mg to 150 mg of a desert cistanche deserticola water extract or 50 mg to 80 mg of desert cistanche deserticola total glycosides, and auxiliary materials. The alpha-ketoglutaric acid salt is any one or more of alpha-ketoglutaric acid calcium, alpha-ketoglutaric acid sodium and alpha-ketoglutaric acid magnesium; the N-acetylneuraminic acid salt is any one or more of N-acetylneuraminic acid calcium, N-acetylneuraminic acid sodium and N-acetylneuraminic acid magnesium; the special dietary preparation has the beneficial effects that the special dietary preparation simultaneously contains alpha-ketoglutaric acid or alpha-ketoglutaric acid salt, N-acetylneuraminic acid or N-acetylneuraminic acid salt, ergothioneine and the cistanche deserticola aqueous extract, and has the effects of delaying senescence, resisting fatigue, improving the symptom of kidney-yang deficiency and enhancing immunity for males aged more than 45 years old.

The invention discloses a biosensor responding to glutaric acid concentration, and belongs to the technical field of biochemical engineering. According to the invention, regulatory protein and promoter elements are constructed on PSC101 series plasmids to obtain the biosensor responding to glutaric acid concentration. By performing point mutation on a-10 region and a-35 region of the response promoter PgcdH and optimizing expression of regulatory protein through the promoter and RBS engineering, the response sensitivity is improved, the response range is widened, and the application prospect in the field of glutaric acid high-yield strain screening is very wide.

The invention provides a process for forming alpha high-strength gypsum through crystal transformation of dihydrate gypsum, and relates to the field of building materials, the process comprises the following steps: 1) adding dihydrate gypsum into an acidic aqueous solution, and uniformly stirring to obtain a first mixed solution; 2) adding a composite crystal modifier, calcium nitrate, potassium chloride and deionized water into the first mixed solution, uniformly stirring and fully reacting to obtain a second mixed solution; 3, solid-liquid separation is conducted on the second mixed solution, a solid phase is collected, washed and dried, and the alpha high-strength gypsum is obtained.The hyaluronic acid is subjected to cross-linking modification, so that the modified transparent phytic acid has the larger molecular weight and space structure, the crystal transformation effect of dihydrate gypsum can be remarkably improved after the hyaluronic acid and glutaric acid cooperate, and the yield of the alpha high-strength gypsum is increased.

The invention relates to the technical field of natural product extraction, and particularly discloses a method for extracting astaxanthin from haematococcus pluvialis. According to the method, a deep eutectic solvent (DES) composed of sodium alpha-ketoglutarate and lactic acid is adopted as an extraction medium, the molar ratio of the sodium alpha-ketoglutarate to the lactic acid is 1: 1-1: 4, water bath ultrasonic extraction is carried out at the temperature of 25-50 DEG C, and the liquid-solid ratio is 10: 1-40: 1. Experiments show that under the optimal condition, the astaxanthin extraction rate and the DPPH free radical scavenging rate are obviously superior to those of a traditional solvent method. The method has the characteristics of greenness, high efficiency and simplicity and convenience in operation, and provides a new strategy for astaxanthin extraction.

The invention relates to the field of synthetic biology, metabolic engineering and fermentation engineering, and discloses a genetically engineered bacterium and application thereof in production of alpha-ketoglutaric acid.The genetically engineered bacterium comprises the steps that the genetically engineered strain with escherichia coli BW25113 or corynebacterium glutamicum ATCC13032 as a host is constructed; overexpression type isocitrate dehydrogenase genes are integrated through chromosomes, alpha-ketoglutarate dehydrogenase complex genes are knocked out, NADPH invertase is overexpressed through plasmids, and exogenous AKG transporter protein is introduced, so that metabolic flux directional regulation and control and product efflux enhancement are realized; meanwhile, a staged fermentation process is adopted and comprises dynamic gradient adjustment of inorganic phosphorus concentration and two-stage pH control. According to the method, the AKG yield of 78.2 g / L can be obtained under the 5L tank scale, the sugar acid conversion rate reaches 0.68, and the method has the advantages of being high in yield, low in byproduct and controllable in cost. The obtained AKG is suitable for a plurality of fields such as medical intermediates, functional foods and cell culture additives, and has wide industrial application prospects.

The invention relates to the technical field of tissue engineering material preparation, and discloses a gelatin chitosan-based hydrogel preparation method and application thereof, and the gelatin chitosan-based hydrogel preparation method comprises the following steps: dissolving chitosan in an aqueous solution containing alpha-ketoglutaric acid and protocatechuic acid to prepare a chitosan solution; in the process, alpha-ketoglutaric acid reacts with amino of chitosan, and meanwhile, alpha-ketoglutaric acid and protocatechuic acid act synergistically to form a basic reaction system of the solution. The preparation method comprises the following steps: adding gelatin into a chitosan solution, so that chitosan, alpha-ketoglutaric acid, protocatechuic acid and gelatin in the solution are fully mixed through blending to form a uniform pre-reaction system; the mixed solution is placed under a proper temperature condition for incubation, in the process, a series of non-covalent bond effects and local chemical bond effects occur in the system, and the chitosan and the gelatin form a stable network structure. After incubation is completed, the solution is gradually converted into gel with excellent performance. And the finally prepared hydrogel has good biocompatibility and temperature-sensitive characteristics.

The invention relates to an asymmetric bioadhesive patch with controllable modulus adhesion as well as a preparation method and application of the asymmetric bioadhesive patch. The asymmetric bioadhesive patch is of a double-layer composite gel structure and comprises an elastomer layer used for being adhered to a medical instrument and a hydrogel layer used for being adhered to soft tissue. The elastomer layer is prepared from the following raw material components: hexadecyl acrylate, a long-chain cross-linking agent and a photoinitiator; the raw materials of the hydrogel layer comprise any one of the following two groups of raw material components: acrylic acid, gelatin, acrylic acid N-hydroxysuccinimide ester, methacrylated gelatin, alpha-ketoglutaric acid and the balance of water; or acrylic acid, acrylic acid N-hydroxysuccinimide ester, N, N '-methylene bisacrylamide, alpha-ketoglutaric acid and the balance of water. Compared with the prior art, the two sides of the asymmetric bioadhesive patch can be adhered to medical equipment and soft tissue respectively, so that the medical equipment can be effectively fixed in the soft tissue.

The invention discloses a cephalotaxus hainanensis Ch2OGD1 gene and application thereof, and belongs to the technical field of gene engineering. The Ch2OGD1 gene is used for coding a 2-oxoglutaric acid dependent dioxygenase (2OGD) type Pictet-Spengler enzyme, and the Pictet-Spengler enzyme is used for coding a Pictet-Spengler enzyme. Through a tobacco transient expression system and in-vitro enzyme activity determination, the Ch2OGD1 is proved to be capable of specifically catalyzing the condensation of dopamine and 4-hydroxyphenylpropanal to generate 1-phenethyl isoquinoline. The invention provides a directional preparation method of 1-phenethyl isoquinoline based on the Ch2OGD1 gene, provides a key enzyme element for biosynthesis of a cephalotaxine alkaloid precursor compound, and provides a technical basis for expanding the application of the gene in plant genetic engineering. And a potential technical path is provided for relieving the problem of resource shortage of cephalotaxine alkaloids.

The invention relates to a composition based on 2-oxoglutaric acid and a preparation method of the composition. The composition comprises copolymer acid coated 2-oxoglutaric acid, nicotinamide, gamma-aminobutyric acid and the like. The copolymer acid is prepared through a double emulsification-solvent evaporation method, the used copolymer acid is polylactic acid-glycolic acid copolymer acid with the molecular weight of 15-20 kDa, and the average particle size of 2-oxoglutaric acid wrapped by the copolymer acid is 100-500 nm. The preparation method comprises the steps of solution preparation, emulsification, ultrasonic treatment, stirring, centrifugation and the like, and ensures the average particle size uniformity and the encapsulation efficiency of the nanoparticles. The composition promotes generation of collagen, improves physiological adaptability through an osmotic pressure regulator and a pH buffer solution, realizes stable encapsulation and slow release performance of 2-oxoglutaric acid, improves oxidation resistance and biocompatibility, and is widely applied to the fields of tissue repair and aging resistance.

The invention discloses a flue gas wet desulphurization composite nano synergist and a preparation method thereof, the flue gas wet desulphurization composite nano synergist comprises the following components by mass: 60-70 parts of organic acid, 10-20 parts of a nano metal oxide compound, 5-10 parts of a surfactant, 3-8 parts of a pH value regulator, and 3-8 parts of a dispersant; the organic acid is a mixture of adipic acid and glutaric acid; the nano metal oxide compound is a mixture of nano titanium dioxide, nano zinc oxide and nano copper oxide, and the mass ratio of the nano titanium dioxide to the nano zinc oxide to the nano copper oxide is (2-5): (1-4): 1. The problems that in an existing desulfurization process, the desulfurization efficiency is low, the limestone utilization rate is not high, equipment is prone to scaling and corrosion, and desulfurization by-products are poor in quality are solved. The desulfurization synergist can significantly improve the desulfurization efficiency, reduce the operation cost, reduce the damage to equipment, and improve the overall performance and stability of a desulfurization system.

A method for manufacturing a die bonding film includes a first step of preparing a raw material varnish containing silver-containing particles manufactured by a reductive method or silver-containing particles of which the surfaces are treated with a surface treatment agent, a glutaric acid, and an organic solvent, a second step of mixing the raw material varnish to obtain an adhesive varnish, and a third step of applying the adhesive varnish to a support film, and removing the organic solvent to obtain a die bonding film. The content of the silver-containing particles is 70% by mass or more, on the basis of the total solid content of the adhesive varnish.

The invention discloses a synthesis method of a glutaric acid ester compound, which comprises the following steps: reacting a propionate compound as shown in a formula 1 with a diazo compound as shown in a formula 2 in a solvent in a nitrogen atmosphere in the presence of a reducing agent under the illumination condition of visible light, and after the reaction is completed, separating out the glutaric acid ester compound, thereby obtaining the glutaric acid ester compound. And separating and purifying the reaction mixture to obtain the glutaric acid ester compound as shown in the formula 3. The propionate compound and the diazo compound are used as reaction substrates, the compound can be generated through reaction under mild conditions, the yield of the target product is improved, operation is easy and convenient, the reaction conditions are mild, the price of raw materials and solvents used in the whole process is low, and cost control is facilitated.

The invention discloses a reverse-age anti-aging traditional Chinese medicine compound composition containing 2-oxoglutaric acid and a preparation method of the reverse-age anti-aging traditional Chinese medicine compound composition. The composition comprises ganoderma lucidum peptide, astragalus peptide, ginseng peptide, 2-oxoglutaric acid, gamma-aminobutyric acid, rehmannia, cistanche, Chinese yam, rhizoma polygonati, honeysuckle, dendrobium officinale and turmeric. The ganoderma lucidum peptide, the astragalus peptide, the ginseng peptide and other components cooperate with one another, so that free radicals can be removed, oxidation reaction can be inhibited, cell membranes can be stabilized, cell oxidative damage can be reduced, and senescence can be delayed. Components such as honeysuckle and turmeric can inhibit inflammation signal channels and reduce inflammatory factors, dendrobium officinale can regulate inflammatory cells, and astragalus membranaceus peptide and ginseng peptide can enhance immunity and reduce inflammatory hazards. In the cellular level, 2-oxoglutaric acid is used for supplying energy and regulating genes, and gamma-aminobutyric acid is used for improving sleep and promoting repair; on the whole, the multiple components can tonify vital qi, nourish viscera, improve qi and blood and improve skin and mental states. Through cooperation of multiple aspects, the disease risk is reduced.

The invention discloses a preparation method of anti-aging sports nutritious food, and relates to the related technical field of sports nutritious food. The anti-aging sports nutritious food comprises the following raw materials in percentage by weight: 50%-60% of 2-oxoglutaric acid, 5%-10% of astragalus membranaceus, 1.5%-2% of pleurotus citrinopileatus powder, 1%-1.5% of natto powder, 1%-1.5% of wheat germ powder, 1%-1.5% of yeast extract, 1%-1.5% of grape powder and the balance of auxiliary materials, and the sum of the weight percentages of the raw materials is 100%. The preparation method of the anti-aging sports nutritious food comprises the following steps: accurately weighing the raw materials according to the weight percentage of the raw materials, screening to ensure that no foreign matters are mixed, screening the premix by using a screen, adding the premix into a mixing machine according to an equivalent progressive increase method, uniformly mixing, processing according to the dosage form, and packaging to obtain the anti-aging sports nutritious food. The product prepared by the invention maintains good anti-oxidation and anti-aging effects, improves sports people, is prepared by reasonable compounding, can play roles in removing free radicals in bodies and relieving exercise-induced fatigue, and has a good synergistic effect.

SOLVENT COMPOSITIONS The present invention relates to a solvent composition for solvent-based paints or other coatings characterized in that it comprises a combination of dimethyl glutarate and at least one other compound selected from isobutyl acetate, ethyl lactate, dimethyl 2-methylglutarate, 2-methyltetrahydrofuran, ethyl acetate, cyclopentyl methyl ether, dithoxymethane, dimethyl carbonate, dimethyl succinate, benzyl alcohol, dimethyl adipate, and glyceryl triacetate. Fig. 1

The invention belongs to the technical field of antirust agents, and particularly relates to an imidazoline derivative as well as a preparation method and application thereof. The structural general formula of the imidazoline derivative is shown in the specification, and in the structural general formula, R1 is C10-C21 straight-chain alkyl, R2 is-C2H4NHCH2-, and R3 is C12-C18 straight-chain alkyl. The preparation method comprises the following steps: adding fatty primary amine into beta-ketoglutaric acid, and reacting to obtain an intermediate; adding alkyl amine ethyl imidazoline into the intermediate, simultaneously adding an aldehyde compound and a solvent, reacting at 120-140 DEG C for 3-5 hours, and carrying out reduced pressure distillation and filtration to obtain a target product. The imidazoline derivative disclosed by the invention has excellent oil solubility, anti-rust performance and antifriction performance.

The disclosure relates to oral care compositions comprising guanidine in free or orally acceptable salt form, a cationic quaternary ammonium compound (e.g., a pyridinium compound) (e.g., cetyl pyridinium chloride (CPC)), a fluoride source, and optionally a zinc source (e.g., zinc lactate or zinc citrate and zinc oxide) as well as to methods of using and of making these compositions. 20 25 20 43 72 12 J un 2 02 5 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5 A B S T R A C T T h e d i s c l o s u r e r e l a t e s t o o r a l c a r e c o m p o s i t i o n s c o m p r i s i n g g u a n i d i n e i n f r e e o r o r a l l y a c c e p t a b l e s a l t f o r m , a c a t i o n i c q u a t e r n a r y a m m o n i u m c o m p o u n d ( e . g . , a p y r i d i n i u m c o m p o u n d ) ( e . g . , c e t y l p y r i d i n i u m c h l o r i d e ( C P C ) ) , a f l u o r i d e s o u r c e , a n d o p t i o n a l l y a z i n c s o u r c e ( e . g . , z i n c l a c t a t e o r z i n c c i t r a t e a n d z i n c o x i d e ) a s w e l l a s t o m e t h o d s o f u s i n g a n d o f m a k i n g t h e s e c o m p o s i t i o n s . 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5

The invention discloses a preparation method of a non-conjugated dehydrated polymer and a polymer prepared by the preparation method. Comprising the following steps: mixing polycarboxylic acid and polyamine, reacting, and drying to obtain the non-conjugated dehydrated polymer, the polycarboxylic acid is selected from at least one of oxalic acid, tricarboxylic acid, succinic acid, 1, 2, 4-butane tricarboxylic acid, 1, 2, 3.4-butane tetracarboxylic acid, glutaric acid, adipic acid and 1, 2, 4, 5-cyclohexane tetracarboxylic acid; the polyamine is selected from at least one of ethylenediamine, propane triamine, 1, 3-propane diamine and phenylenediamine; the reaction temperature is 80-260 DEG C; the atmosphere is an inert gas atmosphere. By using an inert gas purging melt polymerization method, side reactions induced by water or other low-molecular-weight intermediate products generated in a polycondensation process can be inhibited, and by-products in a final product are greatly reduced. The preparation process difficulty can be greatly reduced and the yield of the product can be effectively improved by utilizing a dispersion-precipitation method.

The application discloses a kind of for tape bottom layer on ultraviolet light solidification dip coating ink, the ultraviolet light solidification dip coating ink is composed of the following weight parts of component: photocuring oligomer: 30-50 parts, functional active monomer: 20-50 parts, photo initiator: 3-6 parts pigment: 5-35 parts, dispersing agent: 1-3 parts, surface auxiliary agent: 1-2 parts;The synthesis steps of the photocuring oligomer are: after epoxy E51 is mixed with octandioic acid, under the condition of nitrogen protection, temperature is controlled 115 DEG C, reaction 3-4h, when acid value is less than 10mgKOH / g, reduce reaction temperature to 85-95 DEG C, add polymerization inhibitor, slowly drop catalyst and glutaric acid-3-ethyl-3-oxetane monomethyl ester, drop adding time is controlled at 30-40min, and reaction 7-8h, when acid value is less than 10mgKOH / g, control reaction temperature to 65-75 DEG C, add isocyanatoethyl acrylate and reaction 5-6h, obtain photocuring oligomer with oxetane and acrylate structure simultaneously.The application has the characteristics of low viscosity, good leveling performance, has very good adhesion on steel tape, and solidification speed is relatively fast.