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11748 results about "Fatty alcohol" patented technology
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Fatty alcohols (or long-chain alcohols) are usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4–6 carbons to as many as 22–26, derived from natural fats and oils. The precise chain length varies with the source. Some commercially important fatty alcohols are lauryl, stearyl, and oleyl alcohols. They are colourless oily liquids (for smaller carbon numbers) or waxy solids, although impure samples may appear yellow. Fatty alcohols usually have an even number of carbon atoms and a single alcohol group (–OH) attached to the terminal carbon. Some are unsaturated and some are branched. They are widely used in industry. As with fatty acids, they are often referred to generically by the number of carbon atoms in the molecule, such as "a C₁₂ alcohol", that is an alcohol having 12 carbons, for example dodecanol.
Steroid kit and foamable composition and uses thereof
InactiveUS20060018937A1Preventing and alleviatingCosmetic preparationsSenses disorderActive agentFilm-forming agent
A composition and therapeutic kit including an aerosol packaging assembly including a container accommodating a pressurized product and an outlet capable of releasing a foamable composition, including a steroid as a foam. The pressurized product includes a foamable composition including: a container accommodating a pressurized product; and an outlet capable of releasing the pressurized product as a foam; wherein the pressurized product comprises a foamable composition including: i. a steroid; ii. at least one organic carrier selected from the group consisting of a hydrophobic organic carrier, a polar solvent, an emollient and mixtures thereof, at a concentration of about 2% to about 50% by weight; iii. a surface-active agent; iv. about 0.01% to about 5% by weight of at least one polymeric additive selected from the group consisting of a bioadhesive agent, a gelling agent, a film forming agent and a phase change agent; v. water; and vi. liquefied or compressed gas propellant at a concentration of about 3% to about 25% by weight of the total composition. The composition further may include a therapeutically active foam adjuvant, selected from the group consisting of a fatty alcohol, a fatty acid, a hydroxyl fatty acid; and mixtures thereof.
Owner:FOAMIX PHARMACEUTICALS LIMITED
Methods and compositions for producing fatty alcohols
Methods and compositions, including nucleotide sequences, amino acid sequences, and host cells, for producing fatty alcohols are described.
Owner:LS9 INC +1
Retinoid immunomodulating kit and composition and uses thereof
A composition and therapeutic kit including an aerosol packaging assembly including a container accommodating a pressurized product and an outlet capable of releasing a foamable composition, including a retinoid as a foam. The pressurized product includes a foamable composition including: a container accommodating a pressurized product; and an outlet capable of releasing the pressurized product as a foam; wherein the pressurized product comprises a foamable composition including: i. a retinoid; ii. at least one organic carrier selected from the group consisting of a hydrophobic organic carrier, a polar solvent, an emollient and mixtures thereof, at a concentration of about 2% to about 50% by weight; iii. a surface-active agent; iv. about 0.01% to about 5% by weight of at least one polymeric additive selected from the group consisting of a bioadhesive agent, a gelling agent, a film forming agent and a phase change agent; v. water; and vi. liquefied or compressed gas propellant at a concentration of about 3% to about 25% by weight of the total composition. The composition further may include a therapeutically active foam adjuvant, selected from the group consisting of a fatty alcohol, a fatty acid, a hydroxyl fatty acid; and mixtures thereof.
Owner:FOAMIX PHARMACEUTICALS LIMITED
Formulations for transdermal or transmucosal application
InactiveUS7198801B2Improve permeabilityOrganic active ingredientsBiocideLong chain fatty acidIrritation
The present invention relates generally to formulations for transdermal or transmucosal administration of an active agent. The invention is a substantially malodorous-free and irritation free transdermal formulation which is substantially free of long chain fatty alcohols, long-chain fatty acids, and long-chain fatty esters.
Owner:ANTARES PHARMA IPL
Methods for degrading lignocellulosic materials
The present invention relates to methods for degrading a lignocellulosic material, comprising: treating the lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant. The present invention also relates to methods for producing an organic substance, comprising: (a) saccharifying a lignocellulosic material with an effective amount of one or more cellulolytic enzymes in the presence of at least one surfactant selected from the group consisting of a secondary alcohol ethoxylate, fatty alcohol ethoxylate, nonylphenol ethoxylate, tridecyl ethoxylate, and polyoxyethylene ether, wherein the presence of the surfactant increases the degradation of lignocellulosic material compared to the absence of the surfactant; (b) fermenting the saccharified lignocellulosic material of step (a) with one or more fermentating microoganisms; and (c) recovering the organic substance from the fermentation.
Owner:NOVO NORDISKBIOTECH INC
Saline-alkali soil improver
InactiveCN102517030ALower pHRaise the pHOther chemical processesOrganic fertilisersCis-Butenedioic AcidFatty alcohol
The invention relates to an improver for saline-alkali soil. The improver comprises a powder agent and a water agent, wherein the powder agent comprises the following components: organic matters, plant mycelium protein powder, active calcium, calcium superphosphate, aluminum sulfate, fatty alcohol polyoxyethylene ether ammonium sulfate, amino acid powder, bacillus subtilis and photosynthetic bacteria, and the water agent comprises the following components: citric acid, fulvic acid, humic acid, malic acid, maleic acid, fumaric acid, L-tartaric acid, pyrophosphoric acid, humic acid, lactic acid, oxalic acid, salicylic acid, sodium ion adsorbent, Tween-80 and water. The improver disclosed by the invention can improve the soil from multiple angles, namely soil structure, microorganism species, a chemical method and the like, obviously promote the release of iron and phosphorus in the soil, improve the soil structure, effectively reduce the content of sodium ions in the soil, reduce the pH value of the soil and restore land to a normal planting state after being used continuously for two years.
Owner:孙东军 +1
Fragranced Therapeutic Delivery System
The present invention relates to multi-functional topical delivery systems for providing long-lasting delivery of fragrance as. well as skin-supporting and / or pharmaceutically active ingredients comprising (i) an oil phase; (ii) an aqueous phase; (iii) phenoxyethanol at a concentration of from about 2.0% to about 2.7% based on the total weight of the composition; (iv) an effective exfoliating amount of a hydrophobic hydroxycarboxylic acid selected from the group consisting of orthohydroxybenzoic acid, hydroxycarboxylic acids containing a C12-C24 fatty acid esterified to the alpha carbon hydroxyl group, hydroxycarboxylic acids containing a C12-C24 fatty alcohol esterified to a carboxyl group; (v) a non-ionic emulsifier having an HLB of from about 7 to about 10; (vi) a fragrance composition; and (vii) at least one skin-supporting or dermatopharmaceutically active agent.
Owner:TREMO TEC GMBH
Cationic asphalt emulsifier and preparation method and application thereof
ActiveCN101745340AWide selectionWide applicabilityTransportation and packagingMixingChloroacetic acidsFatty alcohol
The invention relates to cationic asphalt emulsifier and preparation method and application thereof. The main agent of the cationic asphalt emulsifier is prepared through the reaction of quaternarization reagent and intermediate at molar ratio of 0.5-3:1, wherein the intermediate is produced in the reaction of organic acid mixture and organic amine at molar ratio of 1: 1-3. The adjuvant agent of the cationic asphalt emulsifier is the combination of, based on the main agent by weight, 0.1-2.5% of nonionic surfactant and 0.1-2.5% of modifier. The organic acid mixture is the mixture of linear, branched or naphthene-containing organic acid with small relative pace steric effect and organic acid with big relative space steric effect at molar ratio of 1: 3- 3: 1. The quaternarization reagent is epichlorohydrin, hydrochloric acid, chloromethane, dimethyl sulfate or chloroacetic acid. The modifier is one or more of aluminum sulfate, ammonium chloride and calcium chloride and the nonionic surfactant is fatty alcohol-polyoxyethylene ether. The emulsifier has no bad effects to the property of the asphalt, has wide application range and can satisfy different construction conditions.
Owner:PETROCHINA CO LTD +1
Methods for degrading lignocellulosic materials
Owner:NOVO NORDISKBIOTECH INC
Skin barrier composition
A skin barrier lotion for protection against contact with irritants comprises: about 5 to 15 percent by weight of a long-chain fatty acid; about 1 to 5 percent by weight of a long-chain fatty alcohol; about 1 to 10 percent by weight of a hydrocarbon oil; about 1 to 30 percent by weight of a silicone skin protectant; about 0.5 to about 5 percent by weight of an alkanolamine; about 0.5 to about 5 percent by weight of a humectant; about 0.5 to about 10 percent by weight of an inorganic skin protectant; about 0.5 to 15 weight percent of a preservative; and about 50 to 90 percent by weight water. Optionally, the lotion will also contain up to about 5 percent by weight of a fragrance, odor neutralizer or a mixture thereof.
Owner:HASLWANTER JOSEPH A +1
Aerosol Cream Mousse and Method of Treating Hair
ActiveUS20080131378A1Low and reduced greasyLow and reduced and oily hair feelBiocideCosmetic preparationsAmmonium compoundsFatty alcohol
The present invention provides stable aerosol cream mousse composition, preferably hair care composition, that can provide enhanced touch, combability, alignment and volume reduction to the hair, with low or reduced greasy, oily hair feel, while being formulated having a thick, rich, creamy, mousse-type rheology with excellent spreading, perception of spreading, and feel. The aerosol composition is based on the combination of component (A) a cationic surfactant, which is generally a quaternary ammonium compound such as e.g., ditallow dimethyl ammonium chloride; (B) a fatty alcohol, such as cetyl and stearyl alcohol; and (C) carbon dioxide.
Owner:THE PROCTER & GAMBLE COMPANY
Novel vaccine formulations
ActiveUS20060233831A1Improve stabilityStable and safe and easily administrableAntibacterial agentsBiocideAdjuvantNon ionic
The present invention relates to oil-in-water emulsions, their use as adjuvants, and pharmaceutical, immunologic, or vaccine compositions that may comprise the same. In one embodiment, the oil-in-water (O / W) emulsion may comprise an aqueous solution containing an immunogen, a mineral oil, a non-ionic lipophilic ethoxylated fatty alcohol and a non-ionic hydrophilic surfactant. In another embodiment, the oil-in-water (O / W) emulsion may comprise an aqueous solution containing an immunogen, a non-ionic lipophilic surfactant, a mineral oil and a non-ionic hydrophilic ethoxylated fatty alcohol. The present invention also encompasses a method of making a vaccine composition using the adjuvant of the instant invention, the vaccine composition so obtained and methods of use.
Owner:MERIAL INC
Method for increasing the battery life of an alternating current iontophoresis device using a barrier-modifying agent
InactiveUS7137975B2Less powerReduce voltageElectrotherapyMedical devicesElectricityElectrical resistance and conductance
An iontophoretic method for transporting compounds of interest across a body tissue is provided. The method utilizes an AC signal in conjunction with a barrier-modifying agent such as a fatty acid, fatty alcohol, bile acid, surfactant, or the like. The method enables the maintenance of a substantially constant electrical state in a localized region of the tissue through which transport occurs, thereby allowing a compound of interest to be transported across the tissue in a controlled and predictable manner. The barrier-modifying agent reduces the time as well as the voltage level required to achieve a target electrical resistance, thereby reducing patient discomfort and increasing the battery life of the iontophoresis device.
Owner:ACIONT
Ophthalmic devices for delivery of hydrophobic comfort agents
ActiveUS20100140114A1Easy to understandPackage sterilisationPharmaceutical delivery mechanismLipid formationMonoglyceride
The invention relates to a soft hydrogel contact lens, especially a silicone hydrogel contact lens, which has a capability of delivering a hydrophobic comfort agent into the eye of a wearer. The hydrophobic comfort agent includes without limitation a monoglyceride, a diglyceride, a triglyceride, a glycolipid, a glyceroglycolipid, a sphingolipid, a sphingo-glycolipid, a phospholipid, a fatty acid, a fatty alcohol, a hydrocarbon having a C12-C28 chain in length, a mineral oil, a silicone oil, or a mixture thereof. It can be released from the soft hydrogel contact lens into the eye of a wearer when being worn so as to strengthen and stabilize the tear film lipid layer and alleviate the dryness of the eye.
Owner:ALCON INC
Hair conditioner
The present invention relates to a composition comprising one or more quaternary ester ammonium compounds (a), one or more amidoamine compounds (b), wherein the weight ratio between the one or more quaternary ester ammonium compounds (a) and the one or more amidoamine compounds (b) is within a range of 1:5 to 5:1, and one or more fatty alcohols (c). The present invention also relates to a composition that is solid at room temperature, to a hair conditioner composition and to a method to prepare the hair conditioner composition by dispersing the solid composition in water at moderate temperatures.
Owner:KAO CORP SA
Cyclosporin compositions
A composition is disclosed herein comprising from about 0.001% to about 0.4% cyclosporin A, castor oil, and a surfactant selected from the group consisting of alcohol ethoxylates, alcohols, alkyl glycosides, alkyl polyglycosides, alkylphenol ethoxylates, amine oxides, block polymers, carboxylated alcohol or alkylphenol ethoxylates, carboxylic acids / fatty acids, cellulose derivatives, ethoxylated alcohols, ethoxylated alkylphenols, ethoxylated aryl phenols, ethoxylated fatty acids, ethoxylated fatty acids, ethoxylated fatty esters and oils, fatty alcohols, fatty esters, glycol esters, lanolin-based derivatives, lecithin and lecithin derivatives, lignin and lignin derivatives, methyl esters, monoglycerides and derivatives , phosphalipids, polyacrylic acids, polyethylene glycols, polyethylene oxide-polypropylene oxide copolymers, polyethylene oxides, polymeric surfactants, polypropylene oxides, propoxylated alcohols, propoxylated alkyl phenols, propoxylated fatty acids, protein-based surfactants, sarcosine derivatives, silicone-based surfactants, sorbitan derivatives, stearates, sucrose and glucose esters and derivatives, and combinations thereof.
Owner:SAINT REGIS MOHAWK TRIBE
Grafted rubber-like silicone gel with enhanced oil compatibility and its synthetic process
InactiveUS6331604B1Improve compatibilityReduce capacityCosmetic preparationsToilet preparationsSilicone GelsVegetable oil
Fatty alcohol or aliphatic glycol-grafted rubber-like silicone gels with enhanced oil compatibility are synthesized by 1) reacting a fatty alcohol or a aliphatic glycol with methylhydrodimethylsiloxane copolymer in the presence of a platinum catalyst in a reaction medium of a silicone fluid or a cosmetic oil or a mixture thereof, and 2) further reacting the mixture with a vinyl-functional siloxane polymer. The resulting compounds may be used as gelling agents for hydrocarbon oils, vegetable oils and silicone oils. The efficient synthetic process approaches a 100% yield.
Owner:GRANT INDS
Process for producing a branched hydrocarbon component
The invention relates to a process for producing high-quality hydrocarbon base oil of biological origin. The process of the invention comprises alcohol condensation, hydrodeoxygenation, and isomerization steps. Alcohols, preferably fatty alcohols of biological origin are used as the feedstock.
Owner:NESTE OIL OY
Transdermal delivery systems for active agents
InactiveUS20110195114A1Avoid potential undesirable odor and irritation effectsEasy to useAntibacterial agentsBiocideIrritationPatient compliance
Owner:ANTARES PHARMA IPL
Method for preparing white carbon black by utilizing silicon tetrachloride
The invention discloses a method for preparing white carbon black by utilizing silicon tetrachloride. The method comprises the following steps: mixing deionized water and low molecular fatty alcohol at the molar ratio of 1:4-4:4, and adding a proper amount of surfactant; slowly adding a certain amount of the silicon tetrachloride at the room temperature; and obtaining the white carbon black through the steps of preparing reaction solution, curing the reaction solution, sedimentation and abstersion, pulpifying and spray drying, wherein the concentration of the silicon tetrachloride is controlled to be 0.2-1.0 mol.1-1, and modifiers such as 0.01-0.1mol.1-1 of Hexamethyl disilazane and the like can be added in the preparation process of the hydrophobic white carbon black. The grain diameter of the prepared white carbon black is 50-350nm and the specific surface area is 100-300m<2>.g-1; and the method has high economic value and the prepared white carbon black has good hydrophobic effect.
Owner:HENAN UNIV OF SCI & TECH
Process for preparing 2,3,5,6-Tetrafluoro-para-xylyl alcohol
InactiveCN1458137AOrganic compound preparationHydroxy compound preparationSulfolanePotassium fluoride
The preparation process of 2, 3, 5, 6-tetrafluoro-para-xylyl alcohol with 2, 3, 5, 6-tetrachloro-p-phenyl diformyl chloride as material includes fluorination with potassium fluoride, etc. as fluorination agent, sulfolane, etc. as solvent and calixarene, etc. as catalyst and at 40-230 deg.c; esterification of ester with fatty alcohol or aromatic alcohol as esterifying agent and at 20-120 deg.c; reduction of ester with sodium borohydride, etc. as reductant and sulfolane, etc. as solvent, and at -10 deg.c to 60 deg.c; bromination with HBr acid as brominating agent and dichloromethane as solvent and at 30-160 deg.c; and reduction of bromide with magnesium powder, etc as reductant and fatty alcohol, water, chloride, etc as solvent, and at -10 deg.c to 50 deg.c. The present invention has the advantages of simple process, low production cost, high product yield and purity, and is suitable for industrial production.
Owner:TIANJIN UNIV
Surfactant and cleaning compositions comprising microbially produced branched fatty alcohols
ActiveUS20110206630A1Inorganic/elemental detergent compounding agentsCosmetic preparationsFatty alcohol
The invention provides a surfactant and / or a cleaning composition comprising a microbially produced branched fatty alcohol or a derivative thereof. The invention also provides a household cleaning composition and a personal or pet care cleaning composition comprising a microbially produced branched fatty alcohol or a derivative thereof.
Owner:GENOMATICA INC +1
Synthesis of fatty alcohol esters of alpha-hydroxy carboxylic acids, the use of the same as percutaneous permeation enhancers, and topical gels for the transdermal delivery of steroids
InactiveUS20070082039A1The process is convenient and fastBiocideOrganic active ingredientsCarboxylic acidFatty alcohol
The present invention provides a novel approach for the preparation of fatty alcohol esters of α-hydroxy carboxylic acids. The present invention also provides a novel topical gel for the transdermal delivery of steroids using the fatty alcohol esters as permeation enhancers.
Owner:CHEM LAB INC
Branched, substantially unsaturated fatty alcohol sulfates
Branched, substantially unsaturated fatty alcohol sulfates are produced by a process which comprises the steps of: (a) dimerizing unsaturated C16-22 fatty acid to form a dimer fraction and a monomer fraction comprised of branched, substantially unsaturated fatty acids and straight chain saturated fatty acids, (b) removing the monomer fraction from the dimerization step, (c) converting the branched, substantially unsaturated fatty acids from step (b) into the corresponding fatty acid methyl esters, (d) hydrogenating the branched, substantially unsaturated fatty acid methyl esters with the double bonds intact to form the corresponding branched, substantially unsaturated fatty alcohols and (e) sulfating and neutralizing the branched, substantially unsaturated fatty alcohols. The fatty alcohol sulfates thus produced exhibit improved performance properties and greater oxidative stability than standard unsaturated fatty alcohol sulfates.
Owner:COGNIS DEUT GMBH & CO KG
Process for producing a branched hydrocarbon component
InactiveUS20070135666A1Reduce carbon dioxide emissionsImprove stabilityLiquid hydrocarbon mixture productionHydrocarbonsIsomerizationAlcohol
The invention relates to a process for producing high-quality hydrocarbon base oil of biological origin. The process of the invention comprises alcohol condensation, hydrodeoxygenation, and isomerization steps. Alcohols, preferably fatty alcohols of biological origin are used as the feedstock.
Owner:NESTE OIL OY
Latex compositions containing ethylenically unsaturated esters of fatty compounds and applications thereof
Novel latex or emulsion compositions containing internally plasticizing and crosslinkable monomers derived from traditional semi-drying or non-drying oils are disclosed and claimed. The monomers are ethylenically unsaturated derivatives of long-chain olefinic compounds. Preferred embodiments include latex formed from acrylate or methacrylate esters of fatty alcohols. A process for the synthesis of the latex composition is also disclosed, which involves (a) polymerization of the ethylenically unsaturated derivatives of a long-chain olefinic compound in an aqueous phase with at least one other copolymerizable monomer; and (b) blending of so formed polymer with at least one drier and a surfactant to form the novel latex or emulsion compositions. These compositions form films at low minimum film forming temperatures (MFT) ranging from -5 to 10° C. and cure to above ambient glass transition (Tg) polymers without the use of traditional organic cosolvents which contribute to environmental pollution via volatile organic compounds (VOCs) emissions. These compositions are therefore useful in waterborne coatings, contact and pressure sensitive adhesives, and inks.
Owner:UNIVERSITY OF SOUTHERN MISSISSIPPI +1
Hair conditioning composition containing a non-guar galactomannan polymer derivative
A hair conditioning composition comprising:a) from about 0.01 wt. % to about 10 wt. % of a non-guar galactomannan polymer derivative having a mannose to galactose ratio of greater than 2:1 on a monomer to monomer basis, said non-guar galactomannan polymer derivative selected from the group consisting of a cationic non-guar galactomannan polymer derivative and an amphoteric non-guar galactomannan polymer derivative having a net positive charge;i. wherein said non-guar galactomannan polymer derivative has a molecular weight from about 1,000 to about 10,000,000; andii. wherein said non-guar galactomannan polymer derivative has a cationic charge density from about 0.7 meq / g to about 7 meq / g;b) a conditioning agent selected from the group consisting of cationic surfactants, cationic polymers, nonvolatile silicones, nonvolatile hydrocarbons, saturated C14 to C22 straight chain fatty alcohols, nonvolatile hydrocarbon esters, and mixtures thereof; andc) wherein said hair conditioning composition is substantially free of an anionic surfactant.
Owner:THE PROCTER & GAMBLE COMPANY
Environment-friendly type hyperconcentration biological enzyme liquid laundry detergent and preparation method thereof
ActiveCN102242022ANo pollution in the processReduce consumptionNon-ionic surface-active compoundsDetergent mixture composition preparationHydrotropePhosphate
The invention relates to a detergent for daily use, and specifically relates to an environment-friendly type hyperconcentration biological enzyme liquid laundry detergent and a preparation method thereof. The prepared product in the invention is mobile liquid with low viscosity, contains no phosphates, fluorescent brightening agents or alkylphenol polyoxyethylene, and has no pollution to environment. The production process for the product is simple; preparation and mass production of the product are easy; the product can be widely used for washing of various fabrics and clothing and is both applicable to hand wash and machine wash. The environment-friendly type hyperconcentration biological enzyme liquid laundry detergent comprises, by weight, 0.5 to 50 parts of fatty alcohol polyoxyethylene ether sodium sulfate-70, 0.5 to 50 parts of fatty alcohol polyoxyethylene ether-9, 0.5 to 30 parts of sodium alkylbenzene sulfonate-60, 0.2 to 15 parts of triethanolamine, 0.1 to 10 parts of sodium citrate, 0 to 5 parts of citric acid, 0 to 5 parts of aliphatic acid, 0.02 to 8 parts of biological enzyme, 0.1 to 20 parts of an enzyme stabilizer, 0.5 to 30 parts of a solvent, 0 to 15 parts of a hydrotropic agent, 0 to 5 parts of a bactericide, 0.001 to 5 parts of an antiseptic, 0 to 3 parts of essence and 1.0 to 40 parts of softened water.
Owner:上海开米科技有限公司
Alumina carrier with composite pore structure and preparation method thereof
ActiveCN102614934AExtend your lifeHigh selectivityCatalyst carriersMetal/metal-oxides/metal-hydroxide catalystsPolymer scienceMicrosphere
The invention discloses a preparation method of an alumina carrier with a composite pore structure, which comprises the steps of mixing and roasting an aluminum-contained compound and a composite template, wherein the composite template comprises a mesoporous template selected from at least one of a polyethylene glycol-polypropylene glycol-polyethylene glycol triblock polymer, polyethylene glycol, dodecylamine, hexadecyl trimethyl ammonium bromide, lauric acid, stearic acid and fatty alcohol polyoxyethylene ether and a macroporous particulate template selected from polystyrene microspheres with the particle size of greater than 50nm, polymethyl methacrylate microspheres, biomaterial particles, asphalt particles or heavy oil residues; and the weight ratio of the mesoporous template to the macroporous particulate template to the aluminum-contained compound (by alumina) is 0.1-2:0.1-0.7:1. The invention also discloses the alumina carrier simultaneously having mesoporous tunnels and macroporous tunnels prepared through the method, wherein mesopores account for 40-90% of the total pore volume, and macropores account for 10-60% of the total pore volume.
Owner:CHINA PETROLEUM & CHEM CORP
Polyvinylidene fluoride microporous film and preparation method
InactiveCN101632903AWith nanoscale dimensionsImprove hydrophobicitySemi-permeable membranesDistillationFatty alcohol
The invention provides a polyvinylidene fluoride microporous film and a preparation method; the polyvinylidene fluoride microporous film is prepared by using polyvinylidene fluoride, fatty alcohol (non solvent) and polar organic solvent as raw materials, the proportioning of which is as follows: the mass content of polyvinylidene fluoride is 10%-15%, and the content of non solvent is 6-12%; the specific steps are as follows: polyvinylidene fluoride, polar organic solvent and non solvent are mixed, dissolved and filtered, set aside and are deaerated to obtain clear casting film liquid which is struck on a coarse structure template substrate and placed in air; gel forms film in a coagulating bath, is processed by hot water, and then soaked in water and absolute ethyl alcohol to obtain high hydrophobic polyvinylidene fluoride microporous film; the contact angle between the surface of high hydrophobic polyvinylidene fluoride microporous film and water reaches 130 degrees to 140 degrees, air flux of the film reaches 6.0m<3> / (m<2>-h-kPa) under 60kPa, the maximum bore diameter is less than 0.5 mum, tensile strength reaches breaking strength which is larger than 5Mpa, and the elongation at break is larger than 50%. The invention is the polyvinylidene fluoride microporous film with high hydrophobicity, high flux and good mechanical strength and the preparation method, which is mainly applied to the film distillation and associated film process.
Owner:HEBEI UNIV OF TECH
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