291 results about "Dehydroacetic acid" patented technology

A microbicidal composition containing: (a) 1,2-benzisothiazolin-3-one; and (b) at least one microbicide selected from among benzalkonium chloride, benzethonium chloride, benzyl alcohol, caprylyl glycol, chlorphenesin, 2,2′-dithiobis(N-methylbenzamide), diazolidinyl urea, ethylenediamine tetraacetic acid, ethylparaben, imidazolidinyl urea, methylparaben, phenoxyethanol, linoleamidopropyl PG-dimonium chloride phosphate, cocamidopropyl PG-dimonium chloride phosphate, propylparaben, cis-1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride, dehydroacetic acid or its salts, benzoic acid or its salts, sodium hydroxymethylglycinate and zinc pyrithione.

The coating composition which coats the biologically active substance includes at least one protective material selected from the group consisting of a hardened animal fat, a hardened vegetable oil, a linear or branched, saturated or unsaturated aliphatic monocarboxylic acid having 12 to 22 carbon atoms, a fatty acid ester, and a wax group; lecithin; and at least one preservative selected from a propionic acid or its salt, a sorbic acid or its salt, a benzoic acid or its salt, a dehydroacetic acid or its salt, parahydroxybenzoic acid esters, an imazalil, a thiabendazole, an orthophenyl phenol, an orthophenyl phenol natrium, and a diphenyl.

The invention discloses an environment-friendly wood preservative. The environment-friendly wood preservative is prepared by the following raw materials in parts by weight: 25-35 parts of wood vinegar liquid, 15-25 parts of grass vinegar liquid, 17-40 parts of plant extracts, 5-10 parts of dehydroacetic acid, 5-15 parts of charcoal powder, and 1-5 parts of dispersing agents. The preservative, prepared by the raw materials, is added with no organic matters, and is free of polluting the environment; and the added plant extracts are prepared by a heat extracting method, so that the antimould effect is good, the cost is low, the environment is friendly, and the development prospect is better.

The invention discloses a color-protecting antistaling agent for compound pickled vegetables and a production method thereof. The color-protecting antistaling agent is composed of dehydroacetic acid, sodium acetate, ascorbic acid, sodium erythorbate, sodium phytate, sodium citrate, citric acid, sodium metabisulfite and sodium chloride. The color-protecting antistaling agent is reasonable in components and convenient to manufacture, can effectively improve preserving performance of the pickled vegetables, prolongs guarantee period, is safe, and enables the preserving performance of the pickledvegetables to be improved by over one time compared with the preserving performance of an ordinary marketing product.

The invention provides a compound mouldproof agent with the acidizing effect and a preparation method thereof. The compound mouldproof agent comprises the following components in parts by weight: 20-50 parts of propionic acid-ammonium propionate-ammonium dipropionate mixture, 5-15 parts of glacial acetic acid-ammonium acetate-ammonium diacetate mixture, 2-10 parts of benzoic acid, 1-3 parts of dehydroacetic acid and/or sorbic acid and 37-55 parts of vectors. The invention also provides the preparation method of the compound mouldproof agent, which is characterized by evenly stirring the mixture of the 20-50 parts of propionic acid-ammonium propionate-ammonium dipropionate mixture, the 5-15 parts of glacial acetic acid-ammonium acetate-ammonium diacetate intermediate product components, the 2-10 parts of benzoic acid, the 1-3 parts of dehydroacetic acid and/or sorbic acid and the 37-55 parts of vectors, filtering, inspecting and packaging, thus obtaining the compound mouldproof agent. The compound mouldproof agent has double functions of mould proofing and acidizing, is synergistic, avoids antagonism and is simple in preparation, low in cost and high in application value.

The invention discloses a 105 DEG C low-smoke zero-halogen flame-retardant ethylene-propylene-diene monomer cable material and a preparation method thereof. The cable material is prepared from the following raw materials in parts by weight: 75-95 parts of ethylene-propylene-diene monomer, 30-40 parts of SG-4 type PVC resin, 10-15 parts of PBT resin, 1-2 parts of antiager DM, 1-2 parts of antiager RD, 2-3 parts of zinc oxide, 3-6 parts of titanium dioxide, 4-8 parts of microcrystalline wax, 10-15 parts of aluminium hydroxide, 5-10 parts of molybdenum trioxide, 8-12 parts of zinc borate, 1-2 parts of promoter TMTD, 2-3 parts of stearic acid, 15-20 parts of fumed silica, 10-15 parts of ultrafine powdered steatile, 10-15 parts of nanometer potter's clay, 1-2 parts of dehydroacetic acid, 5-10 parts of acetyl triethyl citrate, 4-8 parts of tributyl citrate, 2-3 parts of sulphur and 3-5 parts of a composite filler. The cable material of the invention is excellent in flame retardation effect, extremely less in smoke generating amount during combustion, none in generated toxic gas, none in generated corrosive gas, completely environment-friendly, good in high-temperature resistance, usable at 105 DEG C for a long time without deformation or scorch, capable of normally transmitting signals or electric energy, and durable.

The present invention provides a method for controlling allergens by applying an anti-allergenic effective amount of one or more anti-allergenic agents selected from hyperbranched polymers, amines (including tertiary amines), hops extracts, anti-allergenic iodo derivatives, quaternary ammonium compounds, hydantoins and hydantoin blends, polyhexamethylenebiguanidine hydrochloride, natural oils, anti-allergenic natural acids, sodium carbonate, chelating agents, cyclic ketone acids (e.g., dehydroacetic acid (DHA) and salts thereof (including sodium dehydroacetate and the monohydrate thereof)), anti-allergenic surfactants, organic phosphates, hydrogen peroxide, butylene glycol, phenoxyethanol, sodium salicylate, and mixtures thereof, to the allergens or a substrate on which they are located. These anti-allergenic agents are particularly effective at controlling household allergens, such as dust mites.

The invention discloses environment-friendly nontoxic glue. The environment-friendly nontoxic glue comprises, by weight, 60-160 parts of polyester, 30-40 parts of butylene glycol acrylate, 40-60 parts of trimethylolpropane, 10-30 parts of butanediol, 20-40 parts of metoxyphenol, 8-12 parts of acetone, 9-12 parts of acrylamide, 10-28 parts of styrene, 6-24 parts of ethyl alcohol, 2-6 parts of xylene, 20-30 parts of poly(isobutyl ester), 10-30 parts of aluminum hydroxide, 24-48 parts of phosphotriester, 12-18 parts of antimonous oxide, 100-160 parts of 2-hydroxyethyl methacrylate, 80-100 parts of methyl methacrylate, 20-60 parts of lauryl methacrylate, 12-16 parts of styrene, 150-200 parts of butyl methacrylate, 20-40 parts of methacrylic acid, 8-16 parts of dehydroacetic acid and 20-40 parts of butanol. According to the environment-friendly nontoxic glue, manufacturing is easy, adopted and selected production raw materials are nontoxic, the using effect of the glue is good, environmental friendliness is achieved, a tough coating can be formed, and lasting water repellency and antistatic performance are achieved.

A phosphate-free, highly-concentrated aqueous dispersion composition comprising at least one biocide, sulfosuccinate based surfactant, block copolymer, suspending agent, and optionally an antifoaming agent and desired additives if any. The composition of the present application is significantly stable against heat, cold, transit, storage and dilution for at least 18 months. The preferred biocides of the dispersion composition are 2-meth-4-isothiazolin-3-one (MIT), 1,2-Benzisothiazolin-3-one (BIT), 5-Chloro-2-methyl-4-isothiazolin-3-one (CMIT), 2-Octyl-4-isothiazolin-3-one (Off) 3-Iodo-2-propynylbutyl carbamate (IPBC), oxyfluorfen, thiabendazole, terbutryn, zinc pyrithione (ZnPy), bronopol, folpet, diiiron, dehydroacetic acid (DHA), dazomet and carbendazim alone or in combination. Also disclosed is a process for preparing the dispersion composition and appropriate applications thereof.

Personal care composition including a first skin and/or hair care active cetyl pyridinium chloride; and at least one additional skin and/or hair care active selected from the group consisting of tetrahydrocurcumin, sugar amine, vitamin B₃, retinoids, hydroquinone, peptides, phytosterol, dialkanoyl hydroxyproline, hexamidine, salicylic acid, n-acyl amino acid compounds, sunscreen actives, water soluble vitamins, oil soluble vitamins, hesperedin, mustard seed extract, glycyrrhizic acid, glycyrrhetinic acid, carnosine, Butylated Hydroxytoluene (BHT) and Butylated Hydroxyanisole (BHA), ergothioneine, vanillin or its derivatives, diethylhexyl syrinylidene malonate, melanostatine, sterol esters, idebenone, dehydroacetic acid, Licohalcone A, creatine, creatinine, feverfew extract, yeast extract, beta glucans, alpha glucans, their salts, their derivatives, their precursors, and/or combinations thereof; and a dermatologically acceptable carrier. The invention further relates to methods for regulating the condition of mammalian keratinous tissue wherein the methods each comprise the step of topically applying to the keratinous tissue of a mammal needing such treatment, a safe and effective amount of the personal care composition of the invention.

The invention relates to a process for preparing sodium dehydroacetate. The process comprises preparation of diketene, polymerization of dehydroacetic acid, separation of the dehydroacetic acid, preparation of the sodium dehydroacetate and the like. The dehydroacetic acid is polymerized by adopting crude diketene finished product of the diketene as a raw material; the adopted screened good composite catalyst is mixed solution of triethylamine and ethylene glycol, so good catalytic polymerization effect can be achieved, and the formation of high polymer can be inhibited; and the pure sodium dehydroacetate is synthesized by adopting an initial dehydroacetic acid product which is not decolorized or refined as a raw material. Therefore, the preparation process simplifies the production process, shortens the flow, and reduces energy consumption and material consumption required in the traditional process at the same time.

The invention discloses a novel degradable photoelectric material. The novel degradable photoelectric material is prepared from the following raw materials by weight: 35 to 48 parts of polyester resin, 22 to 26 parts of hydroxyl propionic pentanoic copolyester, 12 to 16 parts of allylcarbazole, 10 to 16 parts of alkaline clay, 8 to 15 parts of calcium stearate, 8 to 12 parts of sodium silicate, 6 to 9 parts of green bean straw fibers, 7 to 12 parts of polylactic acid, 6 to 8 parts of dehydroacetic acid, 5 to 7 parts of degrading agents, 6 to 10 parts of synthesizing agents, 4 to 6 parts of starch binding agents, 2 to 3 parts of antibacterial agents, 1 to 2 parts of stabilizing agents I and 1 to 2 parts of ultraviolet absorbent. The novel degradable photoelectric material is small in toxicity, small in environmental pollution, degradable, high in photoelectric conversion efficiency, low in production cost and beneficial to being popularized and used.

The invention relates to a decolorization and purification technology for sodium dehydroacetate. The decolorization and purification technology includes the steps that with a dehydroacetic acid crude product as the raw material, synthesis of sodium dehydroacetate is performed; after a reaction is finished, the material enters a ceramic nanofiltration membrane decolorization device in a heat-preserved state, and a permeation side solution enters a crystallization kettle for cooling crystallization; a concentration side solution enters a ceramic nanofiltration membrane elution device, hot deionized water is added to elute a product, and evaporative crystallization is performed; crystals are dehydrated, washed, dried, smashed and packaged to form the product. The purity of the product reaches 99.9%, and the recovery rate of sodium dehydroacetate reaches up to 99% or above in the whole process. By adopting the ceramic nanofiltration membrane decolorization and purification technology, product quality can be obviously improved, operation intensity can be relieved, a field operation environment can be improved, and production cost can be reduced.

The present invention relates to a method for synthesizing sodium dehydroacetate. It uses dehydroacetic acid and sodium hydroxide and/or sodium carbonate as raw material and makes them undergo the processes of mixing, grinding and reaction so as to obtain the invented synthetic sodium dehydroacetate. Its reaction temperature is-2 deg.C-90 deg.C and reaction pressure is 0.01MPa-0.2MPa.

The invention discloses a dehydroacetic acid (DHA) feed additive prepared by fermenting kitchen waste and a preparation method thereof. The DHA feed additive is prepared by carrying out spray drying on a fermentation solution of a DHA-producing strain; and the DHA content in the DHA feed additive is higher. The preparation method comprises the following steps: carrying out pretreatment and sectional enzymolysis on the kitchen waste to obtain an enzymolysis composite, and centrifugating the enzymolysis composite to obtain a precipitate which can be made into feed albumen powder and an enzymolysis supernatant which can be made into a fermentation culture medium; autoclaving, and inoculating the DHA-producing strain to perform fermentation, thereby obtaining the fermentation solution; and adding an antioxidant and/or a flocculant into the fermentation solution to obtain the DHA feed additive. The kitchen waste enzymolysis solution can be simultaneously substituted for the carbon source and nitrogen source in the culture medium, thereby lowering the production cost of the culture medium, further greatly lowering the production cost of the DHA feed additive, and implementing the maximized utilization of the kitchen waste resources.

Applicants have discovered that cyclic and acyclic ketone acids, such as dehydroacetic acid, and salts thereof as well as an aromatic carboxylic acid and salts thereof enhance the performance of iodine containing biocides as antimicrobial agents and preservatives. The present invention provides a composition comprising (a) an iodine containing biocide; and (b) (i) a ketone acid or salt thereof, (ii) an aromatic carboxylic acid or a salt thereof, or (iii) a mixture thereof. Preferably, the ketone acid is a cyclic ketone acid and the aromatic carboxylic acid is salicylic acid.

The invention provides a method for preparing high-purity sodium dehydroacetate. The method comprises the following steps: reaction, which is to feed 1,100kg of H2O into a reaction kettle, feed 800kg of dehydroacetic acid into the reaction kettle at a temperature of between 45 and 50 DEG C, feed 160kg of sodium hydroxide into the reaction kettle after the reaction is finished, and after compositions feeding is finished, lower steam amount when temperature in the kettle rises to 77 DEG C so as to stabilize the temperature; pH value determination, which is to make the pH value reach 9, open a steam valve, raise the temperature to 80 DEG C for 10 minutes, preserve the temperature for 15 minutes after the pH value is redetermined to 9, and start to add active carbon into the kettle at a temperature of 80 DEG for 1 hour; pressure filtration; crystallization; suction filtration; dehydration; coarse crushing, drying and discharging; and crushing and packaging. The method has the advantages that the high-purity sodium dehydroacetate prepared by the method has white appearance, high purity, and steady quality.

The present invention relates to the use of low content of benzoic acid and/or sodium salt thereof in combination with one or more organic acid preservatives as active ingredients in the manufacture of a vaginal composition, wherein the composition has weak inhibition effect on normal vaginal lactobacilli while has strong inhibition effect on vaginal fungi and/or pathogenic vaginal lactobacilli, the organic acid preservatives are selected from the group consisting of dehydroacetic acid and/or sodium salt thereof, propionic acid and/or a salt thereof, sorbic acid and/or a salt thereof. The composition of the present invention is particularly useful in inhibiting vaginal fungi, and/or inhibiting pathogenic vaginal lactobacilli, and/or promoting normal vaginal lactobacilli, and/or maintaining normal vaginal acidity, and/or modulating vaginal microecosystem, and/or modulating vaginal microbials, and/or selectively decontaminating vagina.