19 results about "Dipropylene glycol" patented technology

This invention relates to the field of catalyst technology, and in particular to a MgO nanocluster catalyst, its preparation method, and its application. The preparation method of the MgO nanocluster catalyst involves adding magnesium salt and long-chain diol to a solvent, and then adding a surfactant dropwise. Under heating conditions, the MgO nanocluster catalyst forms a catalyst. Due to its size-driven surface effect, the MgO nanocluster catalyst possesses a large number of oxygen vacancies and low-coordination sites, forming strongly basic catalytic active centers. The MgO nanocluster catalyst is applied to the preparation of dipropylene glycol ethers. Using propylene oxide and alcohol as raw materials, a two-stage series reactor packed with the MgO nanocluster catalyst is used for the reaction. The use of the MgO nanocluster catalyst effectively improves the conversion rate of propylene oxide and the selectivity of primary ethers. Its nanocluster structure makes it easy to separate from the product by physical methods, overcoming the difficulties of traditional heterogeneous catalysts and product separation, significantly improving production efficiency, and showing good industrial application prospects.

This invention belongs to the field of metal rust prevention technology, specifically relating to an environmentally friendly water-based rust-preventive composition, its preparation method, and its application. The composition comprises, by weight, 3-8 parts of a first triazine compound, 1-5 parts of a second triazine compound, 10-20 parts of 2-amino-2-methyl-1,3-propanediol, 2-5 parts of dipropylene glycol monomethyl ether, and 65-85 parts of water. The first triazine compound is a triazine compound having substituents containing hydrophobic segments and at least two aminocarboxylic acid substituents, and the second triazine compound is a triazine compound having thiol substituents. This invention forms a dual-anchored protective film on the metal surface through the two triazine compounds, exhibiting excellent salt spray resistance, damp heat resistance, and film density. It achieves a salt spray test duration of 72 hours, a damp heat test duration of 960 hours, and an adhesion rating of 0. Furthermore, it is free of nitrites, phosphates, and heavy metals. The preparation method is simple, suitable for industrial production, and can be widely applied to metal rust prevention in machinery manufacturing, automotive parts, and other fields.

The application discloses a long-acting makeup holding foundation liquid, which comprises water, titanium dioxide, hydrogenated polydecene, isododecane, isohexadecane, dimethicone, caprylic acid / capric acid triglyceride, dipropylene glycol, silica, polyglyceryl-2 dipolyhydroxystearate, synthetic fluorphlogopite, polymethylsilsesquioxane, a film forming agent, magnesium sulfate, cetyl PEG / PPG-10 / 1 dimethicone, lithium montmorillonite, triethoxysilane, ethanol, dimethicone / vinyl dimethicone crosspolymer, alumina, dimethiconol, collagen, natural extract, a colorant, a moisturizing agent and trace additives. The long-acting makeup holding foundation liquid has reliable water supplementing and moisturizing and oil control effects, can selectively absorb and control oil, has reliable skin friendliness, can reliably protect makeup of oily skin, and avoids the problem of makeup removal caused by facial oil secretion.

The application provides a water-oil double-layer penetration-promoting cosmetic composition and a preparation method thereof, and relates to the cosmetic field. The raw materials of the water-oil double-layer penetration-promoting cosmetic composition include 5-30% of an oil phase and 70-95% of an aqueous phase according to a total mass of 100%. The raw materials of the aqueous phase include dipropylene glycol, glycerol glucoside and water. The raw materials of the oil phase include caprylic capric triglyceride and isosorbide dioctanoate. The isosorbide dioctanoate in the water-oil double-layer penetration-promoting cosmetic composition constructs a lipid microchannel, the dipropylene glycol enhances the hydration of the stratum corneum, and the glycerol glucoside activates AQP3 water channel protein. The three channels synergistically improve the penetration efficiency without damaging the integrity of the skin barrier. The penetration-promoting agent has strong broad-spectrum penetration-promoting ability for different polar functional ingredients, the penetration-promoting effect is stable, and the penetration-promoting agent can be stably distributed in the oil and water phases.

This invention belongs to the field of new materials for daily chemical products and discloses a single-component aerosol foundation spray, comprising a propellant and a water-in-oil emulsion. The total weight of the water-in-oil emulsion is 100 wt%, and the emulsion contains the following components: dipropylene glycol 6-8 wt%; 1,2-hexanediol 0.6-1 wt%; isomeric oligosaccharides 2-3 wt%; trimethylsiloxysilicate 1.5-2 wt%; VP / hexadecene copolymer 1.5-2.5 wt%; dual-terminated vinyl polyether silicone oil 0.5-0.7 wt%; inorganic salt content less than 0.2 wt%; and an appropriate amount of emulsifier. The single-component aerosol foundation spray of this invention has comprehensive advantages such as smooth spraying, excellent low-temperature stability, and superior film-forming effect.

This invention, entitled "A Xanthohumulin Microcapsule, Its Preparation Method, and Its Application," belongs to the field of cosmetic technology. The technical problem to be solved is to provide a xanthohumulin microcapsule with higher stability, better encapsulation effect, simpler operation, and higher cost-effectiveness. The key technical points are: a xanthohumulin microcapsule, characterized in that the raw materials for preparing the xanthohumulin microcapsule include: xanthohumulin, component A, component B, and dipropylene glycol; the mass ratio of xanthohumulin to component A and component B is 0.01-1:0.25:0.075-0.5; component A is whey protein or whey protein peptide; and component B is chitosan hydrochloride.

This invention discloses an environmentally friendly polyurethane grouting material for leak sealing and its preparation method. The material includes: 1-10 parts of polymethylene polyphenyl isocyanate, 8-15 parts of toluene diisocyanate, 5-10 parts of polyether triol, 40-50 parts of polyether tetraol, 30-45 parts of composite solvent, and 0.01-0.05 parts of inorganic acid. The composite solvent is composed of raw materials in a mass ratio of dibutyl phthalate: dimethyl carbonate: dipropylene glycol dimethyl ether = 1:1:(1-1.5). The method includes: weighing the raw materials; mixing polymethylene polyphenyl isocyanate, toluene diisocyanate, and inorganic acid, stirring and heating to obtain mixture A; dehydrating polyether triol and polyether tetraol under vacuum and then cooling to obtain mixture B; adding mixture A to mixture B, reacting, and then adding the composite solvent to obtain the environmentally friendly polyurethane grouting material for leak sealing. The grouting material prepared by this method has both environmental protection and high water-binding properties, and the raw materials are environmentally friendly.

The application relates to the technical field of printing materials, and provides a plastic plate printing ink as well as a method and application thereof. The plastic plate printing ink comprises the following components in parts by weight: a composite resin matrix 25-40 parts, a pigment filler 15-30 parts, a functional dispersant 2-5 parts, an adhesion promoter 1-3 parts, an environment-friendly solvent 30-50 parts and an additive 1-4 parts. The composite resin matrix is a compound prepared by compounding polyurethane resin and acrylic resin with at least one of hydrogenated rosin ester and chlorinated polyolefin. The pigment filler comprises inorganic pigment and nano-silicon dioxide. The environment-friendly solvent comprises at least two of propylene glycol methyl ether acetate, dipropylene glycol dimethyl ether and isobornyl acetate. The application has excellent adhesion and weather resistance and scratch resistance, is green and environment-friendly, and can be directly used for printing of PVC, PP and PE plates, and has strong universality.

The application discloses a whitening composition containing controlled-release ascorbic acid and application thereof, and belongs to the technical field of cosmetic preparations. The composition comprises the following components in percentage by weight: Aframomum melegueta seed extract 0.1-5%, sodium mannose phosphate 0.1-5%, controlled-release ascorbic acid 10-20%, crocus sativus flower extract 0.1-5%, dipropylene glycol 15-30% and water in remainder. The application controls and releases ascorbic acid, significantly improves the stability and transdermal persistence of ascorbic acid in the formula, and realizes multi-target synergistic effect on the basis of compounding the controlled-release ascorbic acid with the Aframomum melegueta seed extract, the crocus sativus flower extract and the sodium mannose phosphate. Experiments prove that the composition can not only efficiently inhibit tyrosinase activity and melanin synthesis in B16F10 cells, but also has superiority in long-term stability and long-acting inhibition effect.

The present invention relates to heat-transfer composition comprising a base fluid comprising an alcohol selected from the group consisting of monoethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, hexaethylene glycol, monopropylene glycol, 1,3-propanediol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, pentapropylene glycol, hexapropylene glycol, methanol, ethanol, propanol, butanol, tetrahydrofurfuryl, ethoxylated furfuryl, dimethyl ether of glycerol, sorbitol, 1,2,6-hexanetriol, trimethylolpropane, methoxyethanol, glycerol and mixtures thereof; a polyol amine with a molecular weight less than 500 g / mol; and a S-based compound. The invention further relates to methods of exchanging heat and uses of the heat transfer composition of the invention.

A method can be used for preparing 1,2-propanediol, dipropylene glycol, and tripropylene glycol. The method involves reacting propene with hydrogen peroxide containing nitrate, in the presence of a catalyst mixture containing a phase transfer catalyst and a heteropolytungstate, in a liquid reaction mixture containing an aqueous phase with a maximum apparent pH of 6 and an organic phase. The method then involves separating the reaction mixture into an aqueous phase containing 1,2-propanediol, dipropylene glycol, tripropylene glycol, and nitrate and an organic phase. The method further involves recycling at least part of the separated organic phase to the reaction; hydrogenating the separated aqueous phase using a heterogeneous hydrogenation catalyst to provide a hydrogenated aqueous phase with a reduced nitrate content; and recovering 1,2-propanediol, dipropylene glycol, and tripropylene glycol from the hydrogenated aqueous phase by a sequential multiple-step distillation.

This invention provides a composition containing Dendrobium exosomes, its preparation method, and its application, belonging to the field of nanobiotechnology. This invention efficiently obtains highly active Dendrobium exosomes through a combination of differential centrifugation and ultracentrifugation, and innovatively combines them with specific proportions of moisturizing agents such as dipropylene glycol and erythritol, and anti-inflammatory components such as Centella asiatica extract, forming a composition system that can be stably stored at room temperature. This composition not only effectively protects the activity of exosomes and solves their storage problems, but also utilizes the natural transmembrane transport function of exosomes to synergistically enhance the penetration of small molecule active ingredients into the skin, achieving multiple synergistic effects of whitening, moisturizing, anti-oxidation, and anti-inflammation. This provides a new strategy for developing plant exosome cosmetics that are both highly effective and practical.

The application discloses a kind of water-based single-component inorganic anticorrosive paint and preparation method thereof, belong to anticorrosive paint technical field, its technical scheme main point is a kind of water-based single-component inorganic anticorrosive paint, including the following weight parts of raw materials: silane modified potassium silicate emulsion 6-10 parts, water-based acrylic emulsion 18-25 parts, micro-nano filler 25-35 parts, thickening agent 1.6-2.5 parts, isopropanol 2.5-3 parts, dipropylene glycol butyl ether 2-3 parts, triethylamine 0.8-1.2 parts, other auxiliary agent 1.7-2.6 parts, water 24-29 parts, by silane modification treatment to potassium silicate improve its compatibility between water-based acrylic emulsion, construct interpenetrating network structure, the addition of micro-nano filler, make the network structure after solidification more compact, improve the weather resistance of coating.

This disclosure relates to an aqueous inkjet ink comprising pigment particles, a surfactant, and an organic solvent. The pigment particles comprise a pigment and a pigment dispersion resin having a crosslinked structure. The surfactant comprises an alkynyl glycol surfactant (A-1) with a measured HLB value of 6 to 9 and a siloxane surfactant (A-2) with a measured HLB value of 8 to 14. The organic solvent comprises an alkanediol having 5 to 8 carbon atoms (excluding 1,2-alkanediol having 5 to 8 carbon atoms) and / or a (di)propanediol monoalkyl ether with a specific structural formula.

Compositions are disclosed comprising 7-43% wt dipropylene glycol, 28-50% wt alcohol, 30-45% wt water, and 0.01-1% sheer fragrance, wherein the sheer fragrance comprises approximately 10% wt to approximately 80% wt top notes based on the total weight of the sheer fragrance. Products are also disclosed comprising the disclosed compositions in an aerosol can comprising approximately 60 psig or more of a pressurizing gas. The disclosed compositions reduce or suppress the perception of malodour in the air. The disclosed compositions also sanitize or disinfect a volume of air less than or equal to 25 m3 in 0.1 to 5 minutes by providing equal to or greater than a 3 log10 reduction of aerosolized bacteria, including Staphylococcus aureus and Klebsiella pneumoniae, and aerosolized enveloped viruses, including Phi6. A 3 log10 reduction of aerosolized non-enveloped viruses, like MS2, occurs in 10-15 minutes.

The application discloses an antiskid coating and a preparation method thereof, and belongs to the technical field of coatings. The antiskid coating comprises a coating base material and cross-linking agents and coupling agents added before construction; the coating base material comprises self-made emulsion, antiskid fillers, dipropylene glycol butyl ether, film-forming aids and the like; the self-made emulsion is prepared by seed emulsion polymerization from deionized water, butyl acrylate, styrene and the like monomers, emulsifiers, initiators and the like; the preparation method comprises two stages of coating base material preparation and addition of cross-linking agents and coupling agents before construction, and the process is simple and controllable. The antiskid coating has excellent and stable antiskid performance, strong adhesion, good water resistance and weather resistance, adopts a water-based system, is environment-friendly and low in VOC emission, has a simple preparation process and controllable cost, can be widely applied to scenes needing antiskid such as building floors and vehicle decks, and has high practical value and popularization prospect.

The application belongs to the technical field of sodium metal battery, and particularly relates to a negative-electrode-free sodium metal battery electrolyte compatible with extremely low temperature and a preparation method and application thereof. The negative-electrode-free sodium metal battery electrolyte compatible with extremely low temperature comprises a sodium salt and a mixed solvent, wherein the mixed solvent is composed of a first solvent and a second solvent in a volume ratio of (6-9.5):(0.5-4); the first solvent is 1,2-dimethoxypropane, and the second solvent is dipropylene glycol dimethyl ether. The electrolyte exhibits an extremely low polarization voltage of 19.5 mV at -80 DEG C, and the first-cycle discharge specific capacity of a negative-electrode-free full battery corresponding to the electrolyte reaches 79.66 mAh / g at -60 DEG C, and the capacity retention rate is as high as 96.45% after 100 cycles.

This invention relates to liquid crystal alignment agents, liquid crystal alignment films, and liquid crystal display elements. The liquid crystal alignment agent of this invention contains the following components (A) to (D), and contains component (C) in an amount of 20 to 50% by mass relative to the total mass of the liquid crystal alignment agent. (A): At least one polymer selected from the group consisting of polyimide precursors and polyimides as imides thereof. (B): A non-amine Si coupling agent. (C): At least one organic solvent selected from the group consisting of γ-butyrolactone, γ-valerolactone, N-ethyl-2-pyrrolidone, N-butyl-2-pyrrolidone, and ethyl carbitol. (D): At least one organic solvent selected from the group consisting of 1-butoxy-2-propanol, 2-butoxy-1-propanol, butyl cellosolve, butyl cellosolve acetate, and dipropylene glycol dimethyl ether.

The present invention relates to heat-transfer composition comprising a base fluid comprising an alcohol selected from the group consisting of monoethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, hexaethylene glycol, monopropylene glycol, 1,3-propanediol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, pentapropylene glycol, hexapropylene glycol, methanol, ethanol, propanol, butanol, tetrahydrofurfuryl, ethoxylated furfuryl, dimethyl ether of glycerol, sorbitol, 1,2,6-hexanetriol, trimethylolpropane, methoxyethanol, glycerol and mixtures thereof; a polyol amine with a molecular weight less than 500 g / mol; and a S-based compound. The invention further relates to methods of exchanging heat and uses of the heat transfer composition of the invention.