1175 results about "Dimethylamines" patented technology

Aqueous heavy duty liquid laundry detergent compositions useful for laundering fabrics and providing cleaning and softening benefits. Such detergent compositions contain at least 5%, by weight of the composition, of a surfactant component; from about 0.1% to about 10% of a quaternary ammonium fabric-softening agent having the formula wherein R1 and R2 are individually selected from the group consisting of C1-C4 alkyl, C1-C4 hydroxy alkyl, benzyl, and —(C2H4O)xH where x has a value from about 2 to about 5; X is an anion; and (1) R3 and R4 are each a C8-C14 alkyl or (2) R3 is a C8-C22 alkyl and R4 is selected from the group consisting of C1-C10 alkyl, C1-C10 hydroxy alkyl, benzyl, and —(C2H4O)xH where x has a value from about 2 to about 5; and such compositions contain less than 10 ppm of trimethylamine and dimethylamine impurities.

Disclosed are amphiphilic compounds comprising Formula I:wherein R1, R2, and R3 are C2-C12 straight or branched alkyl; unsubstituted phenyl, biphenyl, C3-C8 cycloalkyl, or C3-C8 cycloalkenyl; or phenyl, biphenyl, C3-C8 cycloalkyl, or C3-C8 cycloalkenyl substituted with one, two, or three C1-C6 straight or branched alkyl groups; or R1 and R2 combined are C3-C8 cycloalkyl, C3-C8 cycloalkenyl; or C3-C8 cycloalkyl or C3-C8 cycloalkenyl substituted with one, two, or three C1-C6 straight or branched alkyl groups; one of R4 or R5 is selected from the group consisting of C2-C6-straight or branched alkyl-(dimethyl-N-oxide), alkyl-(dimethylamine), alkyl-(trimethylammonium), alkyl-glucosyl, alkyl-maltosyl, glucosyl, maltosyl, and polyethylene(glycosyl); the other of R4 or R5 is selected from the group consisting of H, C2-C6 straight or branched alkyl or alkenyl, C2-C6-straight or branched alkyl-(dimethyl-N-oxide); alkyl-(dimethylamine), alkyl-(trimethylammonium), alkyl-glucosyl, alkyl-maltosyl, glucosyl, maltosyl, and polyethylene(glycosyl); and salts thereof. The compounds are detergents useful in the solubilization of membrane-bound proteins.

A polyurethane foam assemblage contains an A component and a B component and the A component contains the polyether polyol, the polymer polyol, the crosslinking agent, the catalyst, the stabilizer and the foaming agent; the B component contains the isocyanate; wherein, the catalyst is the mixed catalyst containing the 2-dimethylamine ethanol, the triethylenediamine, the Bis(2-dimethylaminoethyl) ether and the organotin. Compared with the existing high elastic foam, the polyurethane foam assemblage of the invention has lower density, and thus has lower cost and stable formula and simple process on the premise of the same tensile and tear strength. The polyurethane foam assemblage provided by the invention has the advantages of low density, high resilence, cold curing, etc., is in particular suitable for automobile cushion, sofa, mattress, etc.

A method for manufacturing a creped fiber web is provided and includes providing a rotating cylindrical dryer surface, applying an ionene adhesive to the rotating cylindrical dryer surface to form an adhesive dryer surface, conveying a fiber web to the adhesive dryer surface, drying the fiber web on the adhesive dryer surface to form a dried fiber web, and creping the dried fiber web from the adhesive dryer surface. The ionene polymer can be a crosslinked polymer of an alkylamine, a haloepoxyalkane, and an amine that differs from the alkylamine, such as a terpolymer of dimethylamine, epichlorohydrin, and ethylenediamine. The ionene adhesive may further include monoammonium phosphate. The ionene polymer may be water-soluble and cationic.

The invention discloses a polymer dielectric medium with low dielectric constant and low loss and a preparation method of the polymer dielectric medium. The polymer dielectric medium comprises the following raw materials: 50-60% of epoxy resin system, and 40-50% of mixed boron nitride nanoparticles, wherein the mixed boron nitride nanoparticle is a mixture of a boron nitride nanotube and a boron nitride nanotube; the epoxy resin system is formed by 100phr of epoxy resin E-51, 85phr of methyl hexahydrophthalic anhydride and 1phr of benzyl dimethylamine in a mixing manner. The thermal breakdown voltage of the polymer dielectric medium is significantly improved by the polymer dielectric material with high heat conductivity and high electric breakdown, the service life is prolonged, the dielectric constant and loss and the heat expansion coefficient are reduced, the mechanical strength and the tenacity are improved, the highest heat conductivity can be up to 5.26W / mK, the volume resistivity is about 1014ohm.cm, the thermal breakdown voltage is about 2-3kV / mm higher than that of the similar heat-conducting polymer dielectric medium, and the dielectric constant and the loss are a little lower than those of pure resin.

The invention discloses a preparation method of metformin hydrochloride. The preparation method is characterized by using dicyandiamide and dimethylamine hydrochloride as raw materials, feeding the materials in a mole ratio of (1:1)-(1:1.2), using N,N-dimethylacetamide or dimethyl sulfoxide 2-4 times dicyandiamide by weight as a solvent, and reacting for 4-8 hours at 140+ / -5 DEG C to prepare a crude metformin hydrochloride product; recrystallizing the crude product with ethanol, regulating the pH value to be 5-6, decoloring the crystal, cooling the crystal to minus 10-0 DEG C while stirring, precipitating the crystal, obtaining a refined metformin hydrochloride product through filtering and drying, and recovering the solvent from filtrate. The qualified product has yield of 80-85% and high purity. The preparation method has the advantages that as the selected reaction solvent has a relatively high boiling point, the recovery rate of the solvent is high; the phenomenon of material surging can be effectively avoided, so that the preparation method has the advantages of mild reaction conditions, simplicity in operation and high safety.

The invention relates to the preparation of silicon fluorine / or oil modified acrylate copolymer cationic emulsion. The emulsion is obtained through the emulsion polymerization in the presence of a cationic surfactant and a nonionic surfactant. The emulsion comprises an acrylic acid alkyl ester and (methyl) acrylic acid alkyl ester, ethylene carbonate, aroma substituted olefin and functional monomers such as N-hydroxyalkyl acrylamide, (methyl) acrylic acid alkyl fluoride ester, ethynyl / acryloyl oxygen ethyl trialkoxy silane or polymerisable acryloyl oxygen alkyl urethane oil, (methyl) acryloyl oxygen ethyl trialkyl ammonium chloride and / or (methyl) acrylic acid dimethylamine group ethyl ester and a crosslinking agent. The cationic emulsion has excellent performance and can be widely applied to paper products, plastics, coating agents for leather and top grade coatings.

Disclosed is a hair conditioning composition comprising: (a) a cationic surfactant being a salt of stearylamidopropyldimethylamine and 1-glutamic acid; (b) a high melting point fatty compound; and (c) an aqueous carrier; wherein the composition has a yield point of at least 5 Pa, and the yield point meeting the following mathematical expression: Y≧6.0×−28.5, wherein Y is yield point of the composition, X is a total amount (percentage by weigh of the composition) of the cationic surfactant and the high melting point fatty compound; and wherein the composition is substantially free of thickening polymers. The composition of the present invention effectively delivers conditioning benefits to hair.

The invention discloses a cationic viscoelastic surfactant and preparation and application thereof. The preparation method of the cationic viscoelastic surfactant comprises the following steps: firstly, mixing long-chain fatty acid with dimethylaminopropylamine according to a certain proportion, adding a catalyst solution to obtain a required amide product intermediate A by a series of reaction; allowing reflux condensation reaction of epoxy chloropropane and water at a certain proportion to be carried out in oil bath of 100 DEG C to obtain colourless and transparent 3-chloro-1,2-propylene glycol aqueous solution, namely an intermediate B; heating the intermediate A in oil bath for melting, and dropwise adding an aqueous solution B to obtain the required viscoelastic surfactant by a series of reaction; the surfactant can be mixed with a potassium chloride solution according to a certain proportion to obtain clean fracturing fluid which is low in cost and excellent in performance, besides, the clean fracturing fluid has excellent high-temperature resistance, shearing resistance, and excellent solid-carrying performance, is automatic and thorough in gel breaking, causes little damage to the reservoir stratum and has the characteristic of wide application range.

The invention discloses an aryl-substituted chalcones compound, a preparation method and an application. The aryl-substituted chalcones compound has a structure shown as a formula(I) or a formula(II), wherein, R1, R2, R3, R4, R5 are aromatic groups or aromatic groups with a substituent, the aromatic groups are phenyl, furan, thienyl, pyridyl, pyrimidyl, thiazolyl or pyrrolyl, the substituent is one or more selected from hydroxyl, methoxyl, ethoxyl, methyl, ethyl, trifluoromethyl, halogen, amino, methylamino or dimethylamino; R3 is selected from hydrogen, amino or-NHCOCH3. The aryl-substituted chalcones compound introduces the aromatic groups based on a phenyl skeleton to form a structure with steric hindrance, the molecule presents a V-shaped spatial conformation, compared with the current chalcone compounds, and the aryl-substituted chalcones compound has higher inhibitory activity to cancer cells and can be used for preparing the antitumor drugs.

The invention relates to the field of encapsulation of electronic component, in particular relates to a flame-retardant encapsulating material applicable to electronic and electric product and a preparation method of the flame-retardant encapsulating material, solving the problems of the prior art that the fire-proofing and flame retardant performance is poor, and relatively high flame-retardant rating cannot be obtained. The material comprises a component A and a component B; in percentage by weight, the component A comprises base stock bisphenol-A epoxy resin, fire retardant, diluent diethylene glycol dibenzoate, flexibilizer dioctyl phthalate, pigment, organic silicon defoaming agent and filler silica micropowder; the component B comprises curing agent phthalic anhydride or methyl tetrahydrophthalic anhydride, curing agent eleostearate anhydride, and accelerator 2, 4, 6-tri(dimethylamino methyl) phenol; before the flame-retardant encapsulating material is used, the component A is pre-heated in an oven and then uniformly agitated in an up-to-bottom way; and the component A and the component B are uniformly mixed, so as to obtain flame-retardant encapsulating material; and then the encapsulating can be carried out. The flame-retardant encapsulating material provided by the invention is mainly applicable to insulating packaging of various electronic components such as power engine, rail transit, war industry, spaceflight, car and power.

The present invention relates to compositions for use in refrigeration and air-conditioning systems comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane and at least one chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof. Further, the present invention relates to compositions for use in refrigeration and air-conditioning systems employing a centrifugal compressor comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane and at least one chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N-dimethylamine, or mixtures thereof. The compositions of the present invention may be azeotropic or near-azeotropic and are useful in processes for producing cooling or heat or as heat transfer fluids.

The invention relate to a quaternary ammonium salt positive ion-type organic polymeric flocculant and a preparation method thereof. The polymeric flocculant contains a quaternary ammonium group, the positive ion degree is between 40% and 50%, and the raw material of the flocculant comprises the following components in parts by mass: 5-50 parts of dimethylamine, 1-45 parts of urea, 20-60 parts of epichlorohydrin, 1-40 parts of water, 1-5 parts of catalyst and 2-8 parts of cross-linking agent. In the invention, the product is less in dosage, is obvious in waste water-treating effect, and is especially suitable for treating slurry-preparing and paper-making paper waste water, printing and dyeing waste water and organic waste water containing active groups; and the preparation method is simple, the process conditions are mild, the preparation method is carried out by adopting a conventional device under the ordinary pressure, and no three wastes are discharged.

The invention discloses a fluorescent probe for detecting hypochlorous acid and a preparation method thereof, relating to fluorescent probes. The fluorescent probe for detecting hypochlorous acid, which has higher sensitivity and selectivity and is mainly applied to detecting the hypochlorous acid in an aqueous solution under a neutral condition, as well as the preparation method and the application thereof are provided. The fluorescent probe for the detecting hypochlorous acid is a 7-dimethylamino thiomethoxy-3-phenoxazone compound containing a phenoxazone fluorophore structure and taking dimethylamino thioformyl chloride as phenolichydroxyl protective group. The preparation method comprises the following steps of: adding dimethylamino thioformyl chloride to a container, solving the dimethylamino thioformyl chloride by DMF (Dimethyl Formamide), adding resorufin sodium salt and potassium carbonate and stirring to obtain isabelline slurry, diluting the isabelline slurry by a saturated sodium chloride solution to salt out red sediment, drying the red sediment, and separating by a silicagel column to obtain the fluorescent probe for detecting the hypochlorous acid in red powders. Thefluorescent probe for detecting the hypochlorous acid can be applied to the fluorescence detection of HC1O in the aqueous solution under the neutral condition.

This invention relates to a high-strength, aqueous herbicidal concentrate containing the clopyralid dimethylamine salt. The formulation is stable to storage and exhibits lower viscosity than other clopyralid amine salt formulations.

The invention discloses a combined treatment method of N, N-dimethylformamide (DMF) wastewater, relates to the field of environment protection and water pollution treatment, and in particular relates to a combined treatment method for treating the N, N-DMF wastewater. The method specifically comprises the following steps: firstly decomposing the DMF wastewater into dimethylamine and formate under an alkali condition, then carrying out air stripping, introducing the dimethylamine waste gas generated in the air stripping into a bio-trickling tower for treatment, and directly carrying out biochemical treatment on the air-stripped wastewater. According to the combined treatment method disclosed by the invention, a physic-chemical method and a biological method are combined, a feasible process for treating the DMF wastewater is provided, the toxicity of the DMF wastewater is reduced by means of the physical-chemical method, the biodegradability of the DMF wastewater is improved, and the generated dimethylamine organic waste gas and wastewater are subjected to advanced treatment by means of the bio-chemical method. By adopting the combined treatment method disclosed by the invention, the effective and economical treatment of the DMF wastewater is achieved, and the problems of secondary pollution, difficult regeneration, low efficiency and the like easily caused by the existing treatment methods of adsorption, extraction, chemical oxidization and the like are solved.

The present invention provides a method for producing amine series with an adamantane framework, including the following steps: step 1: reacting adamantane series in a mixed liquid containing oleum and organic nitrile compounds; step 2: performing hydrolyzing treatment to a reaction liquid obtained in the step 1 to form acidamide series with the adamantane framework; step 3: performing alkali treatment to the acidamide series obtained in the step 2 to form the amine series with the adamantane framework. A method for producing quaternary ammonium salts with the adamantane framework in sequence includes the following steps: step A: reacting the amine series with the adamantane framework dissolved in a dissolvant a with aminic acid and methylene oxide or paraformaldehyde, to form dimethylamine series with the adamantane framework; step B: dissolving the dimethylamine series with the adamantane framework obtained in the step A in a dissolvant b to react with halomethane so as to form quaternary ammonium salt halogenide with the adamantane framework; step C: performing ion exchange to the quaternary ammonium salt halogenide with the adamantane framework to form quaternary ammonium salt hydroxides with the adamantane framework.

The invention discloses a preparation method and an intermediate of minocycline. A preparation method for the intermediate M-M is to subject demethylated aureomycin and dimethylamine to reactions as described in the specification in an amine solvent or amide solvent under the catalysis of a palladium complex. The preparation method for minocycline comprises the following steps: (1) subjecting demethylated aureomycin and dimethylamine to the reactions in the amine solvent or amide solvent under the catalysis of the palladium complex so as to prepare the compound M-M; and (2) subjecting the compound M-M prepared in step (1) to hydrogenation and dehydroxylation in an alcohol solvent including an acid under the catalysis of a catalyst. The preparation method provided by the invention has the advantages of easily available raw materials, low cost, simple two-step reaction operation, high product yield, good product quality, recoverability and reusability of the solvents and easy industrial production.

The invention relates to a modified alicyclic amine curing agent and a preparation method thereof. The modified alicyclic amine curing agent is a product which is prepared by reaction of 37-42 parts of 1,3-hexamethylene dimethylamine (1,3-BAC), 12-16 parts of epoxy resin and 41-51 parts of benzyl alcohol in parts by weight; and the viscosity of the product at 25 DEG C is 100-200mPa.S, the amine value is 340-450mgKOH / g, and the active hydrogen equivalent is 100-145g / eq. The preparation method comprises the following steps of: adding the epoxy resin and the benzyl alcohol to a reactor, and uniformly stirring for standby application; adding the 1,3-BAC to another reactor, heating to 60 DEG C, then dropwise adding the previous materials to the 1,3-BAC for reaction, finishing dropwise addition at 60-70 DEG C within 1 to 2 hours, continuously reacting for 1 hours at 60-70 DEG C, and cooling and discharging. The modified alicyclic amine curing agent has low heat release and good compatibility with the epoxy resin and is difficult in moisture absorption and whitening; and after the epoxy resin is cured by the curing agent, the epoxy resin has a smooth surface without water waves and high glossiness and the like.

A method for manufacturing a creped fiber web is provided and includes providing a rotating cylindrical dryer surface, applying an ionene adhesive to the rotating cylindrical dryer surface to form an adhesive dryer surface, conveying a fiber web to the adhesive dryer surface, drying the fiber web on the adhesive dryer surface to form a dried fiber web, and creping the dried fiber web from the adhesive dryer surface. The ionene polymer can be a crosslinked polymer of an alkylamine, a haloepoxyalkane, and an amine that differs from the alkylamine, such as a terpolymer of dimethylamine, epichlorohydrin, and ethylenediamine. The ionene adhesive may further include monoammonium phosphate. The ionene polymer may be water-soluble and cationic.

The present invention relates to compositions for use in refrigeration and air conditioning systems comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one chlorocarbon, alcohol, ketone, ether, ester, N-(difluoromethyl)-N,N-dimethylamine, 1,1,1,2,2-pentafluoro-2-[(pentafluoroethyl)thio]ethane or mixtures thereof, and which are also useful in systems employing a centrifugal compressor The compositions of the present invention may be azeotropic or near azeotropic and are useful in processes for producing refrigeration or heat or as heat transfer fluids.

A method for preparing polyamine flocculant cationic bentonite particles is provided, which belongs to the technology field of environment protection. The method includes the following steps: preparing porous bentonite particles by mixing sodium bentonite, coal powder and soluble starch at the given ratio, and then modifying the porous bentonite particles with cationic polymer, polyamine flocculants, to obtain polyamine flocculant cationic bentonite particles. The product is solid and whitish yellow in color, and has an organic content of 15.2 mg / g and covers a specific surface area of 16.46 m<2> / g. The inventive method has the advantages of reasonable design, simple process and low cost. The prepared polyamine flocculant cationic bentonite particles have stable quality, uniform appearance and excellent adsorbability. The invention is of wide application value for decolorization treatment of dyeing waste water.

The invention discloses cationic polymer grafting modified nanocrystalline cellulose which comprises nanocrystalline cellulose, nonionic monomer used for forming a macromolecule carbon skeleton, and cationic monomer used for introducing positive charge. The nanocrystalline cellulose, the nonionic monomer and the cationic monomer are triggered for copolymerization through free radicals to form a nanocrystalline cellulose cluster, the nonionic monomer is chosen from acrylamide, N, N-dimethyl acrylamide, N, N-diethyl acrylamide, N-vinyl formamide and acrylonitrile, and the cationic monomer is chosen from dimethyl diallyl ammonium chloride, dimethyl amino ethyl acrylate, diethyl amino ethyl acrylate and methyl chlorine quaternary ammonium salt of dimethyl amino propyl acrylamide. The invention further provides application of the cationic polymer grafting modified nanocrystalline cellulose serving as a paper making additive to be added into a wet part of a paper machine so as to improve dry strength, wet strength and first-course retention rate paper or paperboards to lower white water concentration.

The invention discloses a phthalocyanine metal complex as well as a preparation method and an application of the phthalocyanine metal complex. 3-[2,4,6-tri(dimethylamino methyl)-phenoxyl] phthalonitrile is prepared by using 2-phthalonitrile nitryl and 2,4,6-tri(dimethylamino methyl)-phenol as reactants, and further, the phthalocyanine metal complex substituted with amido or amido alpha bit is prepared. The phthalocyanine metal complex has the characteristics of high photosensitive activity and high water solubility; the phthalocyanine metal complex exists in water in a monomer mode, so that the photodynamic activity is facilitated in the water; the phthalocyanine metal complex is subjected to absorption spectroscopic redshift and shifted to a near-infrared area where is beneficial for penetrating through human tissues. The phthalocyanine metal complex is specially high in photodynamic antifungal activity and can be used for preparing photosensitizers or photodynamic medicines or photosensitive medicaments.

The invention disclose 2-substituted sulfinyl-5-(3, 4, 5-trialkoxyphenyl)-1, 3, 4oxdiazole series derivates which are a medicine for restraining pathogenic bacteria of vegetables, fruits and chinese herbal medicines, a preparation method and bioactivity, wherein the compounds are represented by the followed general formula. The compounds can be synthesized by four steps, using 3, 4, 5-trialkoxyl benzoyl hydrazine, carbon disulphide, alkalis, RX as raw materials, using water, alcohols, N, N-dimethylformamide, propanone, dioxygen hexacyclic ring, dimethyl sulfoxide as dissolvants, using triethylamine, pyridine, morpholines, piperidine, 4-(N, N-dimethylin) pyridine and inorganic base as catalysts. Part of compounds of the invention has good inhibition for gibberellic disease, wilt disease and rot disease on vegetables, fruits and chinese herbal medicine. When the administer drug concentration is 50 mug / ml, the inhibition ratio for pepper wilt and apple rot can reach 52. 28+-1. 46and 56. 09+-1. 43respectively.

The invention relates to polyurethane modified epoxy resin encapsulating material filled with promiscuous padding and the preparation method, in particular to epoxy resin encapsulating material prepared by adopting the promiscuous padding mixed by glass fiber power (MG) and SiO2 or AIN and the TDE-85 epoxy resin modified by polyurethane and the preparation method thereof. By adopting the polyurethane to toughen and modify the TDE-85 epoxy resin basal body, and adopting methyl tetrahydrophthalic anhydride methpa as the curing agent, 1,4-butylene-glycol as the chain extender, trimethylol propane as the crosslinking agent, 2,4,6-tris(dimethylamino methyl) phenol as the curing accelerator, and the mixture of the MG and the SiO2 or the AlN as the padding, the epoxy resin encapsulating material is made by evenly mixing the components according to the prescriptive mass ratio, which had good technical performance, in particular to the mechanical property. The experiment indicates that the promiscuous padding can effectively make up for the performance defects of the epoxy resin encapsulating material filled with single particle padding, and has good integrated performance.

The invention relates to a preparation method of a molecular sieve catalyst used for preparing dimethylamine. The invention mainly provides a preparation method of a catalyst with high methanol conversion rate, high dimethylamine selectivity and long service life. The method comprises: subjecting a molecular sieve and pseudoboehmite, as well as dilute nitric acid to pre-molding roasting, and conducting isometric impregnation with a cyclohexane solution of silicon tetrachloride, then conducting treatment with one or several of alkali metal, alkaline earth metal and rare earth metal ion exchange, and steam treatment, thus obtaining the molecular sieve catalyst that can reach the above three requirements at the same time.

The present invention relates to a formula and a preparation process of a heat-conducting aluminum base copper-clad plate with high heat resistance and high insulation, and belongs to the technical field of chemical product manufacturing. The copper-clad plate comprises raw materials of TDE-85 epoxy resin, E-51 epoxy resin, hydroxyl-terminated polybutadiene liquid rubber, benzyl dimethylamine, dual nitrile amine, KH-560 silane coupling agent, nitride boron powder, alumina powder, aluminum nitride powder and silicon nitride powder. The preparation process comprises steps of mixing, stirring, heating, coating, drying and laminating. A product can be a copper foil layer, an aluminum substrate., and an intermediate high insulating heat-conducting adhesive coating. The product produced by the invention has a high long-term heat resistance and can be used at a high temperature of 150 DEG C for a long time. The product has excellent electric insulation, small dielectric constant and dielectric loss, and high breakdown voltage, and is suitable for occasions requiring high insulation. The heat-conducting adhesive coating has the advantages of simple preparation process, convenient coating construction and cost saving.