883 results about "Tricarboxylic acid" patented technology

The present invention relates to new addition salts of lercanidipine comprising lercanidipine and an acid counterion wherein the acid counterion is selected from the group consisting of: (i) inorganic acids, (ii) sulfonic acids, (iii) monocarboxylic acids, (iv) dicarboxylic acids, (v) tricarboxylic acids, and (vi) aromatic sulfonimides, with the proviso that said acid counterion is not hydrochloric acid.

PCT No. PCT/US97/04957 Sec. 371 Date Mar. 24, 1999 Sec. 102(e) Date Mar. 24, 1999 PCT Filed Mar. 25, 1997 PCT Pub. No. WO97/36989 PCT Pub. Date Oct. 9, 1997Bleach compositions comprising a percarbonate bleach and an amino tricarboxylic acid exhibit a reduced tendency to deposit calcium carbonate insolubles on substrates being bleached. Laundry compositions comprising percarbonate bleach and methyl glycine diacetic acid are provided.

A process for straightening or relaxing hair comprising the following steps: (a) providing a hair straightening or relaxing composition having a pH ranging from 8 to 11.5, and containing, in a cosmetically acceptable medium, at least one weak acid chosen from monocarboxylic, dicarboxylic and tricarboxylic acids, their salts, and mixtures thereof; (b) contacting the hair with the hair straightening or relaxing composition to form treated hair; and (c) straightening or relaxing the treated hair by applying heat, wherein hydroxide-containing compounds are not used. Disclosed herein is also a preferred hair straightening or relaxing composition.

The invention belongs to the technical field of metal organic skeletal materials, and discloses a Cu-based organic skeleton-graphene oxide composite porous material and a preparation method and application thereof. The preparation method particularly comprises the following steps of uniformly mixing copper acetate, 1,3,5-benzene tricarboxylic acid and graphene oxide; carrying out ball milling; washing; centrifugalizing; and drying to obtain the Cu-based organic skeleton-graphene oxide composite porous material. The preparation method disclosed by the invention has the advantages of short reaction time (only 30 minutes), no solvent, large preparation quantity, low energy consumption, simple operation method, and the like, is a high-efficiency, clean and environment-friendly novel green synthetic method. The obtained Cu-based organic skeleton-graphene oxide composite porous material greatly increases the adsorption capacity on hydrocarbon VOCs (Volatile Organic Compounds) and achieves the purposes that the adsorption capacity on methanol is 2.06 times of the adsorption capacity on the methanol caused by a Na-ZSM molecular sieve, 2.54 times of the adsorption capacity on the methanol caused by flexible-MOF(E), and 1.79 times of the adsorption capacity on the methanol caused by HKUST-1 under the same condition.

An image bearing member including an electroconductive substrate, a charge blocking layer disposed overlying the electroconductive substrate, a moire prevention layer disposed overlying the charge blocking layer, and a photosensitive layer disposed overlying the moire prevention layer. The charge blocking layer contains N-alkoxymethylized nylon and optionally at least one of an aliphatic dicarboxylic acid and an aliphatic tricarboxylic acid. The moire prevention layer contains a titanium oxide having a purity not less than 99.0% and a cross-linking resin.

This invention provides a method for inhibiting the corrosion of sulfur-containing circulating cooling water. The method comprises: controlling the alkalinity of sulfur-containing circulating cooling water at 250-350 mg/L, and adding composite corrosion inhibitor 5-40 times of leaked sulfur ions in sulfur-containing circulating cooling water. The composite corrosion inhibitor comprises: organic corrosion inhibitor (one or more of hydroxyethylidene-1,1-diphosphonic acid, hydroxyphosphonoacetic acid, aminotrimethylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid, 2-phosphono-1,2,4-tricarboxylic acid-butane and its potassium salt or sodium salt, polyol phosphate, and polyether alcohol amine phosphate) 2-24 wt.% and water 76-98 wt.%. The method has obvious effect on treating sulfur-containing circulating cooling water without changing the reagents used, and can control leaked sulfur ion concentration to 2mg/L and carbon steel corrosion rate to below 0.075 mm/a.

The invention belongs to the technical field of metal-organic framework materials and discloses a copper-based metal-organic framework porous material and a preparation method and application of the copper-based metal-organic framework porous material. The preparation method comprises the following steps that copper acetate and 1,3,5-benzene tricarboxylic acid are mixed evenly and then subjected to ball milling; the mixture is washed 2-3 times with ethanol water and then is soaked, centrifuged and dried, and finally the copper-based metal-organic framework porous material is obtained. By means of the preparation method, solvents do not need to be added in the reaction process, the reaction is quick, operation is simple, and the organic solvents which are cheap and easy to get are adopted as exchange solvents in the activation process, so the preparation method is a novel efficient and economical green synthesis method. The copper-based metal-organic framework porous material obtained through the preparation method has a large specific surface area and high porosity, can well adsorb volatile organic compounds and has higher adsorbing capacity to methanol than activated carbon, zeolite and other traditional adsorbing agents on the same conditions, the adsorbing capacity of the copper-based metal-organic framework porous material is about twice that of a metal-organic framework material HKUST-1 prepared through a hydrothermal synthesis method.

The invention provides a preparation of a corrosion and scale inhibitor used for high alkaline high chlorine circulating cooling water which is prepared according to the following parts by weight: 23-25 parts of PESA, 23-25 parts of 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, 12-15 parts of corrosion and scale inhibitor, 10-15 parts of sodium gluconate, 5-8 parts of alkyl epoxy carboxylate, 2-3 parts of BTA, and 10-20 parts of pure water. The preparation comprises the following steps: adding industrial phosphoric acid of 400-420kg into a reaction kettle for stirring, adding triethanolamine of 140-160kg slowly within 30-35min, stirring for 50-60min, keeping the temperature at 40-80 DEG C, adding pure water of 385-400kg and stirring for 20-30min; adding zinc oxide of 45-55kg under stirring, stirring for 90-120min, and keeping the temperature at 40-80 DEG C to obtain the corrosion inhibition potentiating agent, adding PESA into the 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid to mix with the solution of the corrosion inhibition potentiating agent, sequentially adding alkyl epoxy carboxylate, pure water and sodium gluconate to stir for 30-40min, keeping the temperature at 20-35 DEG C, then adding BTA, stirring for 30-60 min, and keeping the temperature at 20-35 DEG C to obtain the composite corrosion and scale inhibitor.

The present disclosure relates to hair-treatment compositions, which are particularly useful for repairing, strengthening, and protecting hair from damage. The hair-treatment composition include at least 0.5 wt. % of at least one amino acid or amino sulfonic acid, and/or a salt thereof, and optionally, at least 0.5 wt. % of at least one non-polymeric mono, di, or tricarboxylic acid, and/or a salt thereof. Additional components such as surfactants and water may also be included. The unique components of the hair-treatment compositions restructure the hair fibers and result in the hair exhibiting improved properties such as increased hair fiber strength, better discipline, and more curl definition.

The invention discloses a low-phosphorous environment-friendly composite corrosion and scale inhibitor that is used in a circulating cooling water system. The low-phosphorous environment-friendly composite corrosion and scale inhibitor comprises 2-phosphonic butane- 1,2,4 -tricarboxylic acid, plyaspartic acid or polyepoxysuccinic acid, maleic anhydride-acrylic acid copolymer, acrylic acid-2-acrylamide-2-methyl propanesulfonic acid or acrylic acid-acrylate-sulfonate, acrylic acid-acrylate-phosphonic acid-sulfonate quaternary copolymer, zinc salts (zinc sulfate or zinc chloride) or hydroxy benzotriazole. The invention is particularly suitable for the circulating cooling water system with high concentration multiple, which needs to control the phosphorous content (the total phosphorous content is lower than 0.5mg/l) due to environmental pressure.

The present invention relates to a preparation method and applications of a mesoporous metal organic complex base composite material, and belongs to the technical fields of material science, nanometer materials, chemical industry, catalysis and the like. According to the present invention, copper nitrate, a cyanuric chloride tricarboxylic acid H3L and tetraethyl orthosilicate are subjected to one-step ultrasound to prepare Cu-MOF@SiO2, the Cu-MOF@SiO2 is impregnated in a silver nitrate solution, and ultraviolet irradiation is adopted to reduce Ag<+> to prepare the magnetic metal organic polymer-supported noble metal catalyst with the nanometer Ag anchored on the surface, wherein the catalyst is the Cu-MOF@SiO2@Ag. The catalysis has the excellent performance of catalytic reduction of unsaturated organic compounds, and has good application prospects in heterogeneous catalytic reduction reactions.

The invention discloses a CuZn bi-metal organic framework material and a preparing method thereof.The metal organic framework material ZIF-8 containing metal Zn and soluble copper salt are dissolved in a mixed solvent containing H2O, ethyl alcohol and N,N-dimethylformamide, and then 1,3,5-benzene tricarboxylic acid is added for hydrothermal crystallization, separation, washing and drying, so that the CuZn bi-metal organic framework material is obtained.Different from traditional bi-metal MOF preparing methods, the preparing method has the advantages that preparing time is short, replacement rate is high, and the crystal structure of the product varies.

Ester mixture comprising at least one ester of an aliphatic or aromatic di- or tricarboxylic acid having a C₁₀ alcohol component composed of 2-propylheptanol or composed of a C₁₀ alcohol mixture composed of 2-propylheptanol and of at least one of the C₁₀ alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol, and/or 2-propyl-4,4-dimethylpentanol, and comprising at least one ester of an aliphatic or aromatic di- or tricarboxylic acid having a C₇ alcohol component composed of n-heptanol or composed of an alcohol mixture composed of n-heptanol with at least one of the C₇ alcohols 2-methylhexanol and/or 2-ethylpentanol, where the aliphatic or aromatic di- or tricarboxylic acid has been selected from the group consisting of citric acid, phthalic acid, isophthalic acid, terephthalic acid, and trimellitic acid, and polyvinyl chloride composition comprising this ester mixture.

The invention relates to the petroleum chemical industry field and in particular to a high-temperature resisting oil field scale inhibitor with an emulsifying function and a preparation method thereof. The scale inhibitor comprises the following components by weight percent: 2-9% of sodium hexametaphosphate, 13-20% of zinc sulfate, 1-3% of emulsifying agent OP-15, 10-18% of amino trimethylene phosphonic acid, 8-16% of 2-phosphonic acid-1,2,4-tricarboxylic acid butane, 4-6% of sodium sulfite and the balance of water. The scale inhibitor provided by the invention has the emulsifying function, the inhibition rate of the high-temperature resisting oil field scale inhibitor is larger than 97%, and the scale inhibiting ratio is larger than 92% in a high temperature environment of 85 DEG C; and the high-temperature resisting oil field scale inhibitor has better scale inhibiting effect on typical scaling of a watering tube of an oil field gathering and transportation system.

In a dye sensitized photoelectric conversion device having an electrolyte layer (6) between a semiconductor electrode (3) including, for example, fine semiconductor particles to which a sensitizing dye is adsorbed and a counter electrode (5), two kinds of dyes are used as the dye, and the two kinds of dyes are adsorbed onto the surface of the semiconductor electrode (3) at the sites different from each other. The fine semiconductor particles include, for example, TiO₂. Tris(isothiocyanate)-ruthenium(II)-2,2′:6′,2″-terpyridine-4,4′,4″-tricarboxylic acid and 2-cyano-3-[4-[4-(2,2-diphenylethenyl)phenyl]-1,2,3,3a,4,8b-hexahydrocyclopent[b]indol-7-yl]-2-propenoic acid are used, for example, as the two kinds of dyes. Thereby, a dye sensitized photoelectric conversion device such as a dye sensitized solar cell capable of obtaining higher light absorption rate and photoelectric conversion efficiency than in a case of using one kind of dye at high purity, as well as a manufacturing method thereof are provided.

The invention discloses an oil gas field exploitation used compound inhibitor and the preparation method. The compound inhibitor contains imidazolinyl organic phosphate, 2 - N-acid butyrate -1, 2, 4-tricarboxylic acid, thiourea, cetylpyridinium chloride. The mixture proportions of all constituents by weight can meet the specified contents of all active substances. The preparation method is that the 2 - N-acid butyrate -1, 2, 4 - tricarboxylic acid is added into imidazolinyl organic phosphate; thiourea is added into and dissolved into water; the solutions obtained by sub-steps are mixed together and are added into the cetylpyridinium chloride; after evenly stirring for 50-90 minutes and keeping the temperature rang within 15-45 DEG C, the inhibitor of the invention is produced. The compound inhibitor uses multifold medicaments for synergia, can prevent scale formation, can kill bacteria or inhabit bacteria from growing with less usage, can be applied to wide range, and can perform excellent efficiency under complex water quality condition.

The invention provides a wet-mixed mortar modifier. Every 1,000 parts of the wet-mixed mortar modifier comprises 15-20 parts of sodium tripolyphosphate, 1-2 parts of sodium hexametaphosphate, 4-5 parts of phosphonobutane tricarboxylic acid, 32-44 parts of glucose, 24-33 parts of citric acid, 50-80 parts of zeolite powder, 80-100 parts of silica fume, 200 parts of heavy calcium carbonate, 10-15 parts of starch ether, 20-40 parts of hydroxyethyl methyl cellulose ether, 1-2 parts of sodium dodecyl sulfate, 28-50 parts of a polycarboxylate superplasticizer, 20-25 parts of a polycarboxylate slump retaining agent, 40-80 parts of a naphthalene-based superplasticizer, 20-25 parts of redispersible latex powder, 8-10 parts of beta-cyclodextrin and the balance of fly ash. The plasticity-maintaining time of the wet-mixed mortar modifier is prolonged to 36 h, the later strength and bondability of the wet-mixed mortar are improved simultaneously, the mortar durability is improved, the problems of high probability of hollowing, cracking, leaking and the like of plastering mortar are solved, and the wet-mixed mortar modifier has low energy consumption and is free of chemical and radioactive contamination.

Novel impact modifiers obtained by the reaction of amphiphilic block copolymers. These impact modifiers are suitable for use in thermosetting epoxy resin adhesives. The impact modifiers include a carboxylic acid group prepared from the reaction of an intramolecular anhydride of a di- or tricarboxylic acid with at least one amphiphilic block copolymer including at least one hydroxyl group. A method for adhesively binding heat-stable substrates includes applying a single-component thermosetting epoxy resin composition to the surface of a first heat-stable substrate; contacting the epoxy resin composition with the surface of second heat-stable substrate; heating the epoxy resin composition to 20-100° C.; bringing the two substrates and the epoxy resin composition into contact with a wash liquid; and heating the epoxy resin composition to 140-220° C.