18 results about "Suberic acid" patented technology

The invention discloses an aluminum electrolytic capacitor special for an electric tool and a preparation method of the aluminum electrolytic capacitor. The method comprises the following steps that a positive electrode guide pin and a negative electrode guide pin are riveted to an anode foil and a cathode foil respectively; placing electrolytic paper between the anode foil and the cathode foil, and winding to form a core package; carrying out baking drying and electrolyte impregnation treatment on the wound core package, and then carrying out packaging and aging; the electrolyte consists of the following components in percentage by mass: 45-60% of a solvent, 25-40% of a solute, 5-15% of an additive and 5-10% of a stabilizer, the solute contains 2-butyl suberic acid; the stabilizer contains alkyl phosphate. According to the preparation method of the aluminum electrolytic capacitor special for the electric tool, the electrolyte formula is optimized, oxidation hydrolysis of the electrode foil and the oxidation film is effectively inhibited, the ion migration resistance is reduced, the polarization phenomenon is reduced, the loss value and the equivalent series resistance (ESR) of the obtained capacitor are remarkably reduced, the ripple resistance is improved, and the aluminum electrolytic capacitor is suitable for the electric tool.

Disclosed are a flux containing rosin, an active agent, and a solvent, the active agent containing an imidazole compound and two dicarboxylic acids, the two dicarboxylic acids being combined with malonic acid using one selected from succinic acid, adipic acid, and sebacic acid, and a method for preparing a joined body using the flux. Or the soldering flux contains rosin, an active agent and a solvent, the active agent contains an imidazole compound and two dicarboxylic acids, and the two dicarboxylic acids are combined with succinic acid and one selected from suberic acid, sebacic acid, methylsuccinic acid, malic acid and malonic acid. According to the present invention, it is possible to provide a flux capable of increasing the leg size and suppressing the occurrence of bridging during soldering.

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.

The application belongs to the technical field of cosmetics, and discloses a Rosa chinensis / Rhizopus stolonifer fermenting composition and a moisturizing and oil-controlling composition. The preparation method of the Rosa chinensis / Rhizopus stolonifer fermenting composition is as follows: dried Rosa chinensis petals are ground and sieved, inoculated into a fermentation medium, and then inoculated with Lactobacillus pentosus for fermentation culture; the obtained fermentation liquor is inactivated, filtered, concentrated and purified to obtain a Rosa chinensis fermentation product filtrate; then the Rosa chinensis fermentation product filtrate is mixed with a Rhizopus stolonifer fermentation product filtrate to obtain the Rosa chinensis / Rhizopus stolonifer fermenting composition. The moisturizing and oil-controlling composition comprises Hamamelis virginiana extract, Buxus seed extract, lactobionic acid, tea tree essential oil, the Rosa chinensis / Rhizopus stolonifer fermenting composition, supermolecular inclusion suberic acid, a surfactant and water. The composition has the synergistic effects of moisturizing, oil-controlling and skin tightening.

The present application relates to a method for preparing a cadaverine dicarboxylate (cadaverine suberate or cadaverine azelate), the method comprising: a first step of obtaining a lysine dicarboxylate by culturing an L-lysine producing microorganism in a culture medium to which a dicarboxylic acid in the form of a diammonium dicarboxylate is added; and a second step of converting the lysine dicarboxylate into a cadaverine dicarboxylate. According to the present application, a cadaverine dicarboxylate (cadaverine suberate or cadaverine azelate) of high purity can be obtained without ion resin exchange, a decarboxylation process, and a distillation process by implementing the method according to the above procedure.

The invention belongs to the field of care products, and discloses a natural substitute of a siloxane elastomer as well as a preparation method and application thereof, the natural substitute is a cross-linked polymer formed by esterification reaction of chondroitin sulfate and one or more medium-chain dibasic acids with the carbon atom number of 6-10, wherein the medium-chain binary acid is preferably selected from one or more of adipic acid, suberic acid and sebacic acid, and can be naturally derived from vegetable oil. The mass ratio of the chondroitin sulfate to the medium-chain binary acid is 1: 4 to 1: 8. The preparation method comprises the following steps: dissolving chondroitin sulfate in a water-glycerol solvent, mixing with a medium-chain dibasic acid-glycerol premixed solution, reacting for 24-48 hours at 180-220 DEG C under inert gas protection and vacuum conditions, and carrying out steam extraction, cooling and drying to obtain a final product. The natural source index of the obtained substitute is 1, the sensory property of the substitute is equivalent to that of a siloxane elastomer when the substitute is applied to personal care compositions such as skin cream, hair conditioners and cosmetics, and the substitute has the advantages of environmental friendliness and biodegradability.

The invention discloses carboxylated dendritic mesoporous silica nanoparticles as well as a preparation method and application thereof. The preparation method of the carboxylated dendritic mesoporous silica nanoparticles comprises the following step: carrying out nucleophilic substitution reaction on a mixture of aminated dendritic mesoporous silica nanoparticles and a solvent and suberic anhydride. The carboxylated dendritic mesoporous silica nanoparticle prepared by the preparation method is used as a carrier to load the semeglutide to obtain the semeglutide-loaded nanoparticle, namely MSN-coated C8OOH-semeglutide, the release of the semeglutide-loaded nanoparticle is less when the pH value is 2.0, and the release of the semeglutide-loaded nanoparticle is basically equivalent to that of a free drug when the pH value is 6.8, which indicates that the semeglutide-loaded nanoparticle can effectively protect the semeglutide, and the semeglutide-loaded nanoparticle can be used as an anti-tumor drug. The medicine is prevented from being released too early in the stomach and finally reaches the intestinal tract to release the medicine. Pharmacokinetic experiments show that when the MSN (at) C8OOH-semeglutide is adopted, the higher bioavailability is achieved.

The application discloses a method for recycling polyester by amine decomposition under rare earth catalyst, comprising: under the catalysis of a rare earth catalyst, waste polyester and imidazole salt substances are subjected to amine decomposition reaction to obtain a crude product; the waste polyester comprises at least one of polyethylene terephthalate, polytrimethylene terephthalate, polyethylene isophthalate, polytrimethylene isophthalate, polyethylene succinate, polyethylene adipate, polyethylene suberate and polyethylene sebacate; the crude product is hydrolyzed in an alkali solution, extracted, and the organic phase is taken to obtain hydroxyethyl imidazole salt substances and / or hydroxypropyl imidazole salt substances; the water phase is acidified and precipitated, and solid-liquid separation is performed to obtain organic diacid. The application can utilize a large amount of recycled polyester materials, one-pot method is used to recycle dibasic carboxylic acid and imidazole salt value-added chemicals, and the recycled dibasic carboxylic acid and imidazole salt value-added chemicals can be applied to the polyester industry again.

The invention discloses a zinc suberate nanosheet as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing sodium suberate, zinc chloride and a solvent, stirring, heating, carrying out ultrasonic treatment, and carrying out solid-liquid separation. The zinc suberate nanosheet with better dispersing performance and higher crystallinity can be prepared by introducing an ultrasonic step in the reaction process of sodium suberate and zinc chloride, and when the zinc suberate nanosheet is used for preparing the polylactic acid film, the crystallinity of the polylactic acid film can be improved.

The invention discloses a multifunctional rust-removing and rust-preventing lubricating cleaning fluid for ship pipelines and a preparation method of the multifunctional rust-removing and rust-preventing lubricating cleaning fluid, and relates to the technical field of rust-removing and rust-preventing lubricating cleaning fluid for ship pipelines and preparation of the multifunctional rust-removing and rust-preventing lubricating cleaning fluid. Comprising the following components: 20-30 parts of an organic acid complexing agent, 8-15 parts of a low-foam surfactant, 5-12 parts of a metal corrosion inhibitor, 3-8 parts of a lubricating film-forming agent, 4-9 parts of a reducing agent and 40-60 parts of water. Wherein the organic acid complexing agent is formed by compounding citric acid and glycolic acid according to the mass ratio of 1: 0.51: 1.5; the low-foam surfactant comprises suberic acid dimonoethanolamide polyoxyethylene ether and alkyl polyoxyethylene ether phosphate in a mass ratio of 1: 11: 2, the whole formula realizes stable integration through component optimization and a mild preparation process, the functions of rust removal, rust prevention, lubrication and low-foam cleaning are synchronously completed, the maintenance process is greatly simplified, the downtime is shortened, and the production cost is reduced. The comprehensive cost is reduced.

The present application discloses a method for manufacturing a support membrane for instantaneous pressure-release spinning filter membranes, its products, and applications, and belongs to the technical field of separation filter membranes. The instantaneous pressure-release spinning filter membrane support membrane of the present invention is a melt-solvent complex containing 6 to 14 wt% of high-density polyethylene, 5 to 13 wt% of linear low-density polyethylene, 0.5 to 2 wt% of butyl suberic acid, and the remainder of a spinning solvent as a spinning solution. After a non-woven fabric membrane is prepared by instantaneous pressure-release spinning technology, silver ions are bonded to the surface of the formed non-woven fabric membrane, and the stably bonded silver ions are reduced to nanosilver. After the support membrane is composited with a polyethylene filter membrane in a hot-pressing form, it can effectively improve the toughness of the polyethylene microporous filter membrane and maintain a very small thickness and weight, thereby meeting the high requirements of some precision instruments for thickness, weight, and mechanical strength.

A thermoplastic molding composition comprising at least one thermoplastic polyamide, as com-ponent A; red phosphorous, as component B; at least one fibrous and / or particulate filler, as component C; and wherein component A comprises at least one polyamide of A1) units derived from 1, 5-pentanediamine as component A1; A2) units derived from at least one aliphatic dicarboxylic acid, preferably selected from the group consisting of adipic acid, succinic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid, tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, heptadecanedioic acid, and octadecanedioic acid, as component A2; A3) units derived from at least one aromatic dicarboxylic acid, preferably selected from the group consisting of terephthalic acid, isophthalic acid, and phthalic acid, as component A3; wherein the molar ratio of component A1 to the sum of components A2 and A3 is 1-1.05 to 0.95; a process for preparing of the inventive thermoplastic molding composition; the use of the in-ventive thermoplastic molding composition for producing fibers, foils or moldings; and fibers, foils or moldings comprising the inventive thermoplastic molding composition.

The invention discloses a novel method for synthesizing 8-(2-hydroxybenzamide) sodium caprylate, which belongs to the field of pharmaceutical synthesis technology. The method comprises the following steps: cyclization of suberic acid with acetic anhydride and then ring opening with alcohol to obtain compound 2; reaction of compound 2 with ammonium bicarbonate under the activation of di-tert-butyl dicarbonate to obtain compound 3; imidization of compound 3 with di-tert-butyl dicarbonate to obtain compound 4; reduction of compound 4 under the conditions of sodium borohydride and boron trifluoride tetrahydrofuran to obtain compound 5; deprotection of compound 5 in acid to obtain compound 6; condensation reaction of compound 6 with a salicylic acid derivative in the presence of a base to obtain compound 7; and hydrolysis of compound 7 in a base to obtain SNAC. The main raw materials used in the present invention are cheap and easy to obtain, high yield per step, low total cost, mild conditions, simple operation, and suitable for large-scale industrial production; the method can obtain multiple products with high product purity, flexible product lines, and good application prospects.

To provide a flux capable of increasing a fillet size and suppressing the occurrence of a bridge in soldering, and to provide a method for producing a joined body using the same.SOLUTION: The flux contains rosin, an activator and a solvent, wherein the activator contains an imidazole compound and two kinds of dicarboxylic acids, and the two kinds of dicarboxylic acids are composed of one kind selected from the group consisting of succinic acid, adipic acid and sebacic acid, and malonic acid. Alternatively, the flux contains rosin, an activator, and a solvent, wherein the activator contains an imidazole compound and two kinds of dicarboxylic acids, and the two kinds of dicarboxylic acids include succinic acid and one kind selected from the group consisting of suberic acid, sebacic acid, methylsuccinic acid, malic acid, and malonic acid.SELECTED DRAWING: None

The invention provides bio-based liquid crystal copolyester as well as a preparation method and application thereof, and belongs to the field of high polymer materials. The preparation method of the bio-based liquid crystal copolyester comprises the following steps: adding four monomers, namely acetylated naphthoic acid, acetylated benzoic acid derivatives, 4-diacetoxybenzene and suberic acid, and a catalyst into a reaction container, and carrying out condensation polymerization to obtain the bio-based liquid crystal copolyester. The raw materials adopted by the invention are prepared by acetylation reaction of bio-based monomers, the problem that traditional liquid crystal polyester monomers are derived from fossil raw materials is solved, and the liquid crystal polyester has the advantages of environmental protection and sustainable development. The density of the prepared bio-based liquid crystal copolyester is 0.87-1.42 g / cm < 3 >, the melt index is 20-230, and the bio-based liquid crystal copolyester has the advantages of greenness, sustainability, excellent flowability, liquid crystal property, processability and the like. The bio-based liquid crystal copolyester fiber is obtained by drying the prepared bio-based liquid crystal copolyester and then spinning the dried bio-based liquid crystal copolyester.

This invention relates to a highly branched liquid epoxy resin. The process involves first performing a transesterification reaction between 1,3,5-tris(2-hydroxyethyl)cyanuric acid and dimethyl octanoate in xylene solvent to extend the chain. Then, pyromellitic acid is added for further symmetrical chain extension to obtain a rigid polyhydroxy compound. This compound is then reacted with epichlorohydrin and sodium hydroxide, undergoing sequential ring-opening and ring-closing reactions to obtain the highly branched liquid epoxy resin. When used in a 50 / 50 powder coating system to replace part of the E-12 epoxy resin, the resulting coating exhibits good hardness, scratch resistance, and water resistance. It is applied directly externally without affecting the original powder coating system. Furthermore, the hardness range of the coating can be adjusted by the amount added, making it convenient to use, widely applicable, and with promising application prospects.

The invention discloses a preparation method of a 3D printing consumable machine capable of improving low-temperature toughness. The 3D printing consumable capable of improving low-temperature toughness comprises the following components in parts by weight: urethane acrylate, a monomer, a photoinitiator, a defoaming agent, a stabilizer, a flexibilizer, a silane coupling agent and an antioxidant. Wherein the toughening agent is prepared from the following components in parts by weight: maleic anhydride, dicumyl peroxide and europium acetate loaded calcium suberate. The preparation process of the europium acetate loaded calcium suberate comprises the following steps: A1, treating the surface of europium acetate by using a silane coupling agent; a2, putting the treated europium acetate and calcium suberate into a stirrer, stirring for 3 hours at the stirring speed of 2000r / min, dispersing and mixing, and drying to obtain europium acetate loaded calcium suberate. The invention has the beneficial effect that the toughness in a low-temperature environment can be improved.

The object of the present invention concerns a hair restructuring association comprising or alternatively consisting of: (a) a quaternary ammonium salt of formula (I) and (b) at least one sulpho-derivative of vegetable fatty acids, wherein R5, R6 are independently chosen between hydrogen and a radical R0, R0 consists of the following structure of formula (II), R1 is chosen from the group consisting of: hydrogen, methyl, isopropyl, sec-butyl, isobutyl, ethylenemethylthio, benzyl, para-hydroxybenzyl and 3-methylene-1H-indole, R2, R3, R4 are independently chosen from the group consisting of: methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl, mX− is chosen from the group consisting of: formic acid, acetic acid, unsaturated monocarboxylic acids, adipic acid, aldaric acid, oxalic acid, phthalic acid, azelaic acid, sebacic acid, malonic acid, succinic acid, tartaric acid, glutaric acid, pimelic acid, maleic acid, malic acid, fumaric acid and suberic acid, isocitric acid, citric acid, fatty acids, acidic amino acids, keto acids and aromatic carboxylic acids, m is an integer number comprised between 1 and 22, n is comprised between 2 and 20.