1775 results about "Propanediol" patented technology

The invention relates to the technical field of immunology, and discloses a QS-21 composite adjuvant as well as a preparation method and application thereof, and the QS-21 composite adjuvant comprises the following components in parts by weight: 0.1-0.5 part of QS-21; 4 to 6 parts of liposome; 0.05 to 0.1 part of CpG oligonucleotide; 0.1 to 0.3 part of a freeze-drying protective agent; 0.2 to 0.5 part of a stabilizing agent; 3 to 5 parts of propylene glycol; 1-2 parts of ethanol; 5-15 parts of an organic solvent chloroform; the liposome is prepared from the following components in parts by weight: 3 to 4 parts of phospholipid distearate; and 1-2 parts of amino lipid. By compounding the liposome carrier and the QS-21, adding the CpG oligonucleotide and optimizing the freeze-drying protective agent, the loading efficiency of the immunologic adjuvant, the immune effect stability and the restorability after freeze-drying are improved, and the durability and efficacy of immune response are enhanced.

An absorbent retail paper product comprised of cellulosic fibers having a concentration of 1, 3-dichloro-2-propanol that is not detected to 50 ppb, as measured using the ACOC official method 2000.0150, a concentration of 3-monochloro-1, 2-propanediol that is not detected to 1000 ppb, as measured using the ACOC official method 2000.0150, as measured by the "adipic acid test", as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150. Polyaminoamide-epihalohydrin at a concentration of not detected to 0.09% has a lateral wet strength of from 80 n / m to 200 n / m wherein all of the cellulosic fibers contained in the absorbent paper product are non-synthetic, the cellulosic fibers and the absorbent paper product are substantially free of formaldehyde.

The invention belongs to the technical field of polyurethane elastomers, and particularly relates to a high-static-rigidity high-damping low-pressure-change polyurethane elastomer and a preparation method thereof. Comprising a polyol component and an isocyanate component, and the polyol component comprises polyol A, a chain extender, a stabilizer, a hydrolysis-resistant agent and a catalyst; the isocyanate component is prepared from isocyanate, polyhydric alcohol B and branched chain unit alcohol; the polyol A comprises amine ether polyol and polytetrahydrofuran ether polyol; the polyhydric alcohol B comprises bio-based hydrolysis-resistant polyhydric alcohol and polytetrahydrofuran ether polyhydric alcohol; the bio-based hydrolysis-resistant polyol is prepared by carrying out a reaction on sebacic acid, 1, 2-propylene glycol and 1, 4-butanediol; the branched-chain unit alcohol is prepared from tetrahydrofuran and isooctanol through a reaction. By introducing the bio-based hydrolysis-resistant polyhydric alcohol and branched chain monohydric alcohol, the damping effect is remarkably enhanced, and on this basis, through formula adjustment and raw material screening, the product toughness is greatly improved, the compression set is reduced, and the performance of the product in heavy haul railway application is effectively optimized.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a phenylboronic acid-based P / N / B-containing halogen-free flame retardant, a preparation method thereof and application of the phenylboronic acid-based P / N / B-containing halogen-free flame retardant in epoxy resin. The preparation method comprises the following steps: by taking diphenyl hypophosphorous chloride as a basis, preparing a flame-retardant intermediate through nucleophilic substitution reaction between diphenyl hypophosphorous chloride and an aldehyde group-containing phenolic compound, then reacting a phenylboronic acid structure with 3-amino-1, 2-propylene glycol to obtain an amino group-containing phenylboronic acid compound, and finally reacting the phenylboronic acid compound with 3-amino-1, 2-propylene glycol to obtain the amino group-containing phenylboronic acid compound. And finally, carrying out a Schiff base reaction on the flame-retardant intermediate and an amino-containing phenylboronic acid compound to obtain the halogen-free flame retardant containing phosphorus, nitrogen and boron elements. The flame retardant provided by the invention can significantly improve the flame retardant property and mechanical property of epoxy resin. A flame-retardant epoxy resin prepared based on the flame retardant; the influence on Tg of an epoxy resin cured product is small, the smoke suppression and char formation performance and the mechanical performance of the cured product can be remarkably improved, and meanwhile, the flame retardant has excellent flame retardant efficiency; the limit oxygen index of the flame-retardant epoxy resin can reach 31%; the vertical combustion grade is V-0 or above, and the carbon residue amount can reach 18% or above.

The invention belongs to the technical field of oil and gas development, and particularly relates to an oil and gas well blocking remover and a preparation method thereof. The blocking remover comprises the following components: 5-8% of low-carbon composite organic acid, 5-7% of fluoboric acid, 6-9% of ammonium bifluoride, 4-6% of an anti-acid sludge mutual solvent, 2-4% of a corrosion inhibitor, 2-4% of polyoxypropylene polyoxyethylene propylene glycol ether, 8-12% of a permeation dispersion surfactant, 2-5% of a sulfur dissolving agent, 2-5% of a stable chlorine dioxide solution and the balance of water. The preparation method comprises the following steps: adding the low-carbon composite organic acid, the fluoboric acid and the ammonium bifluoride into water and stirring; adding an acid sludge resisting mutual solvent and a sulfur dissolving agent, and stirring; adding the corrosion inhibitor, the polyoxypropylene polyoxyethylene propylene glycol ether and the permeation dispersion surfactant, and stirring; and finally, reducing the stirring speed, adding the stable chlorine dioxide solution, and stirring to uniformly mix. The blocking remover provided by the invention is comprehensive in blocking removal function, very good in dissolving and dispersing performance on complex blocking substances, very small in corrosion damage to a shaft pipe wall and wide in applicability.

The invention relates to the technical field of flame retardance, and discloses a flame-retardant coating and a preparation method thereof.The flame-retardant coating is obtained by adding phenolic resin, polycarbonate, phosphorus-containing modified phenolic resin, boric acid-containing benzoxazine, an organic silicon resin defoaming agent, a propylene glycol film-forming agent and water into a stirrer and stirring. The flame-retardant coating contains a large amount of anacardol, long chains in the anacardol can also be crosslinked to form a net-shaped structure, a net-shaped carbon skeleton structure is formed under high-temperature carbonization, degradation products are inhibited during combustion, and the flame-retardant coating has good fire resistance; wherein oxazolidinone generated by reaction of an epoxy group of epoxidized phenolic resin and an isocyanate group of hexamethylene diisocyanate is a heterocyclic ring with very high heat resistance and also plays a role in synergistic fire resistance; the flame-retardant coating contains a large amount of phosphorus elements, sulfur elements and nitrogen elements, has a good flame-retardant effect, and achieves a synergistic flame-retardant effect.

The invention discloses herbal oil control essence. A component A comprises deionized water and sodium hyaluronate; the component B comprises methylpropanediol, a hyperforin perforatum flower / leaf / stem extract, cyclodextrin and a rehmannia chinensis root extract; the component C is prepared from water, butanediol, amur corktree bark extract, coptis root extract, radix sophorae flavescentis extract, rhus chinensis insect gall extract, cnidium monnieri fruit extract, zanthoxylum bungeanum fruit extract and camphor tree leaf extract; and the component D comprises 1, 2-hexanediol. The preparation method of the herbal oil-control essence comprises the following steps: S1, preparing raw materials; s2, preparing the component A; s3, preparing the component B; s4, preparing a component C; s5, a mixing process; and S6, adding a component D and carrying out post-treatment. The herbal components form a synergistic effect network and act on a skin grease secretion system in a targeted manner, grease secretion is balanced from the source by adjusting the biological activity of sebaceous gland cells, meanwhile, biological signal channels related to skin anti-inflammation, moisturizing and tightening are activated, and the multiple-effect-in-one skin care effect is achieved.

The invention discloses a supported nickel catalyst for preparing 1, 3-propylene glycol through hydrogenation of 3-hydroxypropionaldehyde as well as a preparation method and application of the supported nickel catalyst, and relates to the technical field of catalysts. The modified long-chain multi-carbon inducer is used, and a special long-chain molecular structure and a branched chain group of the inducer can effectively and selectively adsorb and occupy a micropore impregnation site; the preparation method has the beneficial effects that more active component nickel species are obviously promoted to be dispersed in main reaction confinement spaces such as mesopores and macropores and interact with the carrier to form effective active sites, and active component steeping liquor is inhibited from entering micropore channels due to capillary action; the active site failure caused by agglomeration of nickel species in micropores in the subsequent drying and roasting process of the catalyst precursor is avoided, the efficient and directional reaction is ensured, the generation of by-products is greatly reduced, the pressure is relieved for the subsequent product rectification separation, and the final product purity is improved. The catalyst provided by the invention can still keep an excellent catalytic effect when the air speed of a 3-hydroxypropionaldehyde solution is increased to 6.5 h <-1 >.

The invention discloses high-temperature-resistant and corrosion-resistant unsaturated polyester resin for a grid and a preparation method thereof, and belongs to the technical field of unsaturated polyester resin. The raw materials comprise the following components in parts by weight: 330 to 400 parts of isophthalic acid, 55 to 80 parts of 1, 4-cyclohexanedimethanol, 150 to 200 parts of ethylene glycol, 125 to 220 parts of first reaction stage propylene glycol, 0.2 to 0.6 part of a catalyst, 0.1 to 0.3 part of a first reaction stage antioxidant, 90 to 120 parts of second reaction stage propylene glycol, 30 to 50 parts of phthalic anhydride, 300 to 380 parts of maleic anhydride, 0.1 to 0.3 part of a second reaction stage antioxidant, 0.1 to 0.5 part of a polymerization inhibitor and 600 to 630 parts of a cross-linking agent. The high-temperature-resistant and corrosion-resistant unsaturated polyester resin for the grating has the characteristics of high corrosion resistance, high temperature resistance and high mechanical property, is low in cost and is suitable for being used as a raw material for manufacturing the grating.

The invention provides a film stripping liquid and a preparation method thereof. The film stripping liquid is composed of a solubilizer, a metal corrosion inhibitor, a surface leveling agent and an organic solvent. Wherein the solubilizer can be a combination containing benzene series, so that the solubility of the photoresist in an organic solvent can be improved, and the service life of the stripping liquid is prolonged. The surface leveling agent is one or more of 1, 3-propylene glycol, 2-phenyl-1, 3-propylene glycol and 2-amino-1, 3-propylene glycol, and is used for improving the uniformity of the film stripping liquid in the film stripping process and avoiding the uneven concave-convex phenomenon on the surface of the photoresist. The metal corrosion inhibitor can be selected from azole or polyphenol compounds and can inhibit corrosion of metals such as Cu and Ag in the film stripping process; and the organic solvent is a combination of xylene and dichloromethane and is mainly used for dissolving and removing the expanded and fallen photoresist. According to the film stripping liquid provided by the invention, the glue stripping speed can be increased, the glue stripping uniformity can be remarkably improved, in addition, metals can be effectively protected from being corroded, and the corrosion speed of the metals such as Cu and Ag is controlled to be limited below 1 A / min.

The invention relates to the technical field of polyester resin, and discloses outdoor hydrolysis-resistant polyester resin and a preparation method and application thereof.The outdoor hydrolysis-resistant polyester resin is prepared from, by weight, 30-38 parts of polyhydric alcohol, 48-50 parts of binary acid, 20.5-28.5 parts of acidolysis agent and 0.1-0.12 part of onium salt curing accelerator; according to the invention, 2-butyl-2-ethyl-1, 3-propylene glycol is used as polyol, and an alkyl side chain is introduced into polyester molecules to generate steric hindrance and shielding effects, so that water molecules are difficult to attack adjacent lipid bonds, and the hydrolysis resistance of the polyester resin is improved. 2, 2 '-[(2-hydroxy-3-phenoxy propyl) azadiyl] diethanol contains a benzene ring structure with thermal stability, and is crosslinked into a polyester molecular chain, so that the glass transition temperature of the polyester resin can be increased, the heat resistance can be improved, and the boiling water resistance of a resin coating can be improved.

The invention discloses application of AgNWs (at) CdZnS2 (at) Cd, Zn-ZIF-8 core-shell structure in photocatalysis and extraction of uranium from seawater, and a method comprises the following steps: filling propylene glycol containing PVP into a bottle, and magnetically stirring and heating in an oil bath; the preparation method comprises the following steps: firstly, adding NaCl into the mixed solution, continuously stirring, adding an AgNO3 solution, magnetically stirring and heating the mixed solution, collecting precipitates, and washing the precipitates with acetone and ethanol respectively to obtain gray AgNWs; the preparation method comprises the following steps: adding 2-methylimidazole into an organic solvent solution containing organic amine, mixing AgNWs, adding into an organic solvent solution of cadmium salt and zinc salt, stirring at room temperature, standing, and carrying out solid-liquid separation to obtain AgNWs (at) ZIF8; the preparation method comprises the following steps: adding AgNWs (at) ZIF8 into an organic solvent, dropwise adding an organic solvent solution of the AgNWs (at) ZIF8 into the organic solvent containing thiourea in a grinding process, heating the mixture in a water bath, carrying out vacuum drying at room temperature, and cooling to room temperature after the reaction is finished, so as to obtain the AgNWs (at) CdZnS2 (at) Cd, Zn-ZIF-8 photocatalytic material. According to the invention, AgNWs (at) ZIF8 is used as a precursor to prepare an AgNWs (at) CdZnS2 (at) Cd, Zn-ZIF-8 core-shell structure, and the core-shell structure has excellent ability to extract uranium from seawater.

The present invention provides a cyclic carbonate synthesis method, and belongs to the technical field of organic ester compound synthesis, and the cyclic carbonate synthesis method comprises the following steps: S1, 1, 3-propylene glycol, a dehydrating agent and a catalyst are added into a high pressure reaction kettle, and CO2 is introduced into the high pressure reaction kettle for a reaction; s2, after the reaction is finished, after the high-pressure reaction kettle is cooled to the room temperature, redundant gas in the high-pressure reaction kettle is discharged, after the gas in the high-pressure reaction kettle is completely discharged, the high-pressure reaction kettle is opened, the catalyst is filtered out, and the solution is subjected to vacuum-pumping separation to obtain a target product; the catalyst is a heterogeneous catalyst MxOy (at) Zn-dpot. Carbon dioxide conversion is carried out in a chemical utilization mode, a chemical product trimethylene carbonate can be produced, the synthesis route is easy to operate, and after the MxOy at Zn-dpot catalyst is added, the yield is high, the high additional value is achieved, and the green chemistry concept is met.

The invention relates to the technical field of pharmaceutical preparations, and provides a minoxidil film coating agent as well as a preparation method and application thereof. The minoxidil film coating agent provided by the invention comprises 40-60% of propylene glycol, 3-7% of polyvinyl alcohol, 20-30% of ethanol, 1-7% of minoxidil and the balance of water. According to the invention, propylene glycol is taken as a solvent, a plasticizer and a transdermal absorption enhancer, polyvinyl alcohol is taken as a film-forming material, and ethanol is taken as a volatile agent, after administration, ethanol is volatilized to promote film formation of polyvinyl alcohol, and propylene glycol enhances the plasticity of the formed film, so that the effect of reducing liquid medicine loss is achieved, the local medicine concentration is increased, and the bioavailability is improved. The minoxidil liniment disclosed by the invention has excellent skin permeability, can effectively convey a medicine to a required part, and can ensure that the medicine is released at a fixed position of the skin and is accurately administered in a medicine release process, so that the stimulation of liquid medicine flow to other parts is reduced, and a good treatment effect is achieved.

The present invention relates to the field of polyurethane materials and particularly to a temperature-induced color-changing vehicle film and a preparation method therefor. The method of the present invention comprises: firstly, using polyurethane to wrap vanadium dioxide powder to obtain color-changing microcapsules; then using 1,1,1,3,5,5,5-heptamethyltrisiloxane and 3-allyloxy-1,2-propanediol as raw materials to synthesize an organosilicon-modified diol, and enabling trimellitic anhydride to react with toluene diisocyanate to synthesize a dicarboximide compound; enabling the organosilicon-modified diol and the dicarboximide compound to undergo an esterification reaction and a polymerization reaction to obtain an organosilicon-modified imide polyester diol; then mixing the organosilicon-modified imide polyester diol with polytetrahydrofuran ether glycol 2000, and then enabling the mixture to react with toluene diisocyanate to obtain a polyurethane elastomer; and mixing the polyurethane elastomer, the color-changing microcapsules, a silane coupling agent, a plasticizer, an antioxidant, and an ultraviolet light absorber, followed by melt extrusion and blow molding into a film, so as to obtain the temperature-induced color-changing vehicle film.

The invention relates to the technical field of electronic adhesives, in particular to an n-hexane-containing polyurethane electronic adhesive and a preparation method thereof.The n-hexane-containing polyurethane electronic adhesive is prepared from, by weight, 40-45 parts of polyether polyol, 25-30 parts of polypropylene glycol, 35-40 parts of isocyanate, 1-2 parts of 1, 4-butanediol, 0.02-0.03 part of a catalyst, 6-7 parts of flame-retardant heat-conducting filler, 1.2-1.5 parts of foaming microcapsules and 1-2 parts of a foam stabilizer; by adding the flame-retardant heat-conducting filler and the foaming microcapsule taking normal hexane as a core, the problem that the existing polyurethane electronic glue is poor in heat-conducting property after foaming is solved, and meanwhile, the polyurethane electronic glue also has good flame-retardant property.

The present invention discloses an infrared-shielding polyurethane glass film and a preparation method thereof, relating to the field of polymer materials technology. When preparing the infrared-shielding polyurethane glass film, the present invention comprises reacting an organic nickel complex and 3-imidazole-1-propionic acid to produce a functionalized crosslinker; sequentially reacting 4-aminophenylacetonitrile with 3-hydroxypropyl acrylate and quinoline-4-carboxaldehyde to produce a UV-absorbing monomer; reacting polypropylene glycol, a UV-absorbing monomer, 1,4-butanediol, and 4-chloromethyl-1,3-phenylenediisocyanate to polymerize to produce polyurethane; reacting tungsten-doped titanium dioxide and chloropropyltriethoxysilane to produce modified titanium dioxide; and uniformly mixing the polyurethane, modified titanium dioxide, the functionalized crosslinker, and acetone, followed by coating and curing to produce the infrared-shielding polyurethane glass film. The infrared-shielding polyurethane glass film prepared by the present invention has excellent infrared shielding, anti-aging, antibacterial, and mechanical properties.

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention discloses a high-temperature-resistant flame-retardant CPVC power cable protection pipe and a preparation method thereof, and relates to the technical field of cable protection pipes. The high-temperature-resistant flame-retardant CPVC power cable protection pipe at least comprises the following raw materials in parts by mass: 100 parts of chlorinated polyvinyl chloride; 15 to 25 parts of high impact resistance type MCS resin; 8 to 12 parts of poly (1, 2-propylene glycol adipate); 12 to 20 parts of a sepiolite-methyl methacrylate-butyl acrylate compound; 8-15 parts of aluminum-titanium composite coupling agent modified magnesium-aluminum-lanthanum hydrotalcite; 3-6 parts of a rare earth composite heat stabilizer; 2-4 parts of a processing aid; 0.5 to 1.5 parts of an antioxidant; and 1-2 parts of a lubricant. The prepared high-temperature-resistant flame-retardant CPVC power cable protection pipe has high heat resistance, high flame retardance and high impact resistance, and is excellent in comprehensive performance, high in safety and reliability and long in service life.

The invention provides high-transparency weather-resistant polyester resin and a preparation method thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: sequentially adding polyol, binary acid and a catalyst into a reaction kettle, heating while stirring, heating for 1-2 hours at the temperature of 160-180 DEG C, heating to 235-250 DEG C, carrying out heat preservation reaction for 12-14 hours, and cooling to room temperature to obtain the high-transparency weather-resistant polyester resin. Adding an acidolysis agent to react for 3-4 hours, vacuumizing for 1-3 hours, adding a curing accelerator and an antioxidant, stirring for 20-40 minutes, discharging, cooling and crushing to obtain the high-transparency weather-resistant polyester resin. Wherein the polyhydric alcohol is a mixture of neopentyl glycol, tricyclic dodecanedimethanol, ethyl butyl propylene glycol and trimethylolpropane. The polyester resin prepared by the invention is applied to polyester transparent powder paint, can obviously improve the transparency and weather resistance of a coating, and has good mechanical property and leveling property.

A method for preparing 1,2-propanediol involves reacting propene with hydrogen peroxide 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 process then involves separating the reaction mixture into an aqueous phase (Pa) containing 1,2-propanediol and an organic phase (Po); recycling at least part of the separated organic phase (Po) to the reaction; and recovering 1,2 propanediol from the separated aqueous phase (Pa). In the recovery, 1,2-propanediol is separated from the aqueous phase (Pa) by distillation and the apparent pH of the separated aqueous phase (Pa) is adjusted to at least 9 prior to the distillation to reduce the content of formic acid and acetic acid in the recovered 1,2-propanediol.

The invention discloses a nanoscale high-stability alcohol-in-oil transparent system and a preparation method thereof. The system comprises the following components in percentage by mass: 20-30% of PPG-13-decyl tetradecanol polyether-24, 20-30% of polydimethylsiloxane, 20-30% of polydimethylsiloxane, 20-30% of a 40 to 68% of methyl propylene glycol; 2 to 6% of propylene glycol dibenzoate; and 6-32% of polar grease. The preparation method comprises the following steps: heating and uniformly stirring the propylene glycol dibenzoate and the grease at 55-75 DEG C to obtain an oil phase; adding PPG-13-decyl tetradecyl alcohol polyether-24 into the oil phase, and stirring to obtain a mixed phase; adding methylpropanediol into the mixed phase, and stirring; and cooling to room temperature. The alcohol-in-oil transparent system prepared by a rapid and convenient process has the characteristics of small particle size and high stability, can load tetrahydrocurcumin and other active matters, and has important application value in the field of cosmetics.

The invention discloses a whitening and freckle-removing essence which comprises the following components: a calendula extract, pure water, 1, 2-pentanediol, methylpropanediol, carbomer, arginine, nicotinamide, a freckle-removing essence, a natural plant penetration enhancer, hydroxyethyl piperazine ethanesulfonic acid, small-molecule ellagic acid, dipropylene glycol, 1, 2-propylene glycol, ethanol and water. The composition is prepared from 1, 2-hexanediol, caprylyl glycol, ethylhexylglycerin, raspberry ketone glucoside and a PEG / PPG-17 / 6 copolymer. The invention further discloses a production process of the whitening and freckle-removing essence water. The invention has the following advantages: with pure natural plants as a main product, the skin has obvious change after being used for a week, specifically, pregnancy spots, sunburn, chloasma, pigmentation after inflammation and other color spots on the face can be reduced and faded, the face skin can be whitened, the face is mild and non-irritating, and the effects of improving uneven skin color, brightening skin color and the like can be achieved.

The invention belongs to the technical field of electronic packaging, and relates to packaging slurry and a preparation method and application thereof. The invention provides a packaging slurry, the packaging slurry comprises glass powder and a carrier, the glass powder is composed of SiO2, B2O3, Al2O3, PbO, MgO and SrO, and the carrier is composed of SiO2, B2O3, Al2O3, PbO, MgO and SrO. The preparation method of the carrier comprises the following steps: mixing nano zirconium dioxide and an additive according to a mass ratio of 0.5: (1-2), and blending in a mixer for 3-5 hours, thereby obtaining the carrier, the additive is prepared from isooctyl acetate, gamma-aminopropyl trimethoxy silane, propylene glycol polyether and butyl carbitol acetate. The packaging slurry can improve the water resistance of the electronic device.

The invention discloses a high-stability laundry gel bead composition and a preparation method thereof, and relates to the field of daily chemicals, and a gel bead formula comprises the following components in percentage by weight: 5-20% of propylene glycol, 5-11% of glycerol, 3-18% of a sulfonic acid neutralizer, 4-15% of fatty alcohol-polyoxyethylene ether, 9-20% of isomeric fatty alcohol-polyoxyethylene ether, 5-30% of sulfonic acid and the balance of water. The cleaning agent is prepared from 5-15% of fatty alcohol-polyoxyethylene ether sulfate, 5-25% of isomeric fatty alcohol-polyoxyethylene ether sulfate, 1-2% of essence, 0.5-2% of compound enzyme, 0.2-1% of bacteriostatic agent and 5-13% of process water. The gel bead prepared according to the formula and the preparation method disclosed by the invention has the characteristics of cold resistance, heat resistance, dry resistance, moisture resistance, pressure resistance and low breakage rate.

The invention discloses fluticasone propionate emulsifiable paste and a preparation method thereof. The preparation method of the fluticasone propionate emulsifiable paste comprises the following steps: S1, mixing liquid paraffin, isopropyl myristate and other auxiliaries, and heating to obtain an oil phase; s2, purified water, propylene glycol, disodium hydrogen phosphate dodecahydrate and other auxiliaries are mixed to obtain a water phase; and S3, adding the oil phase into the water phase, adding fluticasone propionate and the like after complete emulsification, uniformly stirring, and standing to obtain the cream. Compared with the prior art, the fluticasone propionate emulsifiable paste prepared by the invention is not easy to layer at high and low temperatures, and the obtained emulsifiable paste has better stability and is very beneficial to transportation, storage and the like of the product.

The present invention provides a non-aqueous electrolyte including a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by Formula 1 below and lithium difluoro(oxalato)borate (LiODFB), and the organic solvent includes ethylene carbonate (EC), propylene carbonate (PC), ethylene propionate (EP), and propyl propionate (PP). In Formula 1 above, n is an integer of 3 to 10.

The invention provides a high-efficiency foam dedusting agent as well as a preparation method and application thereof. The preparation method of the agent comprises the following steps: (1) mixing and dissolving a surfactant and deionized water according to a certain proportion to obtain a mixed solution A; (2) adding glycerol and propylene glycol into the mixed solution A according to a certain proportion to obtain a mixed solution B, then transferring the mixed solution B into a reaction container, and stirring until all components in the solution are completely and uniformly mixed to obtain a main component C of the foam dedusting agent; and (3) adding sodium dodecyl benzene sulfonate, diethylene glycol monobutyl ether and polyoxyethyl alkyl ether into the main component C according to a certain proportion, and completely dissolving to obtain the efficient foam dedusting agent. The problems of high cost, unstable performance, insufficient foaming amount, short maintenance time, poor anti-freezing performance and the like of a traditional dust removal agent in coal yard dust control are effectively solved by utilizing the synergistic effect of a plurality of auxiliary agents for foaming of the surfactant.

The invention belongs to the technical field of polyether polyol preparation, and discloses a synthesis method of propylene glycol polyether. The synthesis method comprises the following steps: mixing propylene glycol, an organic boron catalyst and a cocatalyst, then introducing alkylene oxide at 10-80 DEG C for reaction, adding a solvent into a reaction system after the reaction is finished, and carrying out reduced pressure distillation, washing and drying to obtain propylene glycol polyether, the cocatalyst is selected from one or a combination of at least two of trimethylphosphine, triethylphosphine, triphenylphosphine, tris (dimethylamino) phosphine and tripyrrolidine phosphine. According to the invention, the organic boron catalyst and the cocatalyst phosphine salt are matched for use, and the cocatalyst is selected, so that the reaction can be carried out under a relatively wide temperature condition, and the propylene glycol polyether with controllable molecular weight and narrow distribution is prepared.

The invention belongs to the field of chemical synthesis, and particularly relates to a synthetic method of cyclobutyl-containing methyl propionate and propylene glycol derivatives. Specifically, dimethyl methylmalonate represented by a formula A and a quaternary tension ring substrate represented by a formula B are taken as basic raw materials, under the action of a catalyst, a quaternary ring-containing methyl propionate represented by a formula C is prepared through a nucleophilic addition reaction, and further a propylene glycol derivative represented by a formula D or a formula E: # imgabs0 # is prepared through a decarboxylation reaction or a reduction reaction.