833results about How to "Reduce polarity" patented technology

A method for extracting a polycyclic aromatic hydrocarbon from a material such as tobacco or tobacco extracts or other materials comprises treating the material with a molecularly imprinted polymer selective for the hydrocarbon in the presence of a low polarity medium.

The invention provides a method of sustained delivery of a lactam, imide, amide, sulfonamide, carbamate or urea containing parent drug by administering to a patient an effective amount of a prodrug compound of the invention wherein upon administration to the patient, release of the parent drug from the prodrug is sustained release. Prodrug compounds suitable for use in the methods of the invention are labile conjugates of parent drugs that are derivatized through carbonyl linked prodrug moieties. The prodrug compounds of the invention can be used to treat any condition for which the lactam, imide, amide, sulfonamide, carbamate or urea containing parent drug is useful as a treatment.

In an organic electroluminescent device constructed by providing at least an emitting layer using an organic material between a hole injection electrode and an electron injection electrode, in forming an emitting layer having a dopant doped into a host material, a dopant having a condensed ring obtained by condensing three or more rings is used, and the difference between the highest occupied molecular orbital in the host material and the highest occupied molecular orbital in the dopant is in a range from -0.3 eV to +0.3 eV.

A liquid crystal display device is provided which is capable of improving quality of moving images. A field dividing driving operation is performed in which an odd field during which each of scanning electrodes in odd-numbered rows is sequentially driven and an even field during which each of scanning electrodes in even-numbered rows is sequentially driven occur, alternately and repeatedly, with time width of a refresh rate. In the former half of the odd field, display data is written in each of pixel regions corresponding to scanning electrodes in odd-numbered rows and, in the latter half of the odd field, black data is written in each of the pixel regions corresponding to scanning electrodes in the odd-numbered rows. In the former half of the even field, display data is written in each of pixel regions corresponding to scanning electrodes in the even-numbered rows and, in the latter half of the even field, black data is written in each of pixel regions corresponding to scanning electrodes in the even-numbered rows.

Of the many embodiments provided herein, one embodiment includes a method comprising: providing a drilling fluid comprising: an aqueous fluid; and a surfactant; and drilling a well bore in a subterranean formation comprising an oleaginous fluid using the drilling fluid, wherein the surfactant forms a micelle within the well bore; and removing an oil block in the formation.

The invention discloses a wood-plastic composite material and a preparation method thereof. The composite material includes the following materials by the weight portion: 100 portions of reclaimed plastic particles, 80-100 portions of bamboo powder, 80-100 portions of inorganic filler, 1-2.5 portions of titanic acid ester, 1-5 portions of compatibilizing agent, 8-10 portions of lubricant and 1-2 portions of functional auxiliary agent. Compared with the prior art, the invention integrates the advantages of inorganic filler and bamboo fiber, reduces the dosage of vegetable fiber in the traditional wood-plastic formula, and increases the dosage of inorganic filler; the composite material prepared by the method has higher toughness and rigidity, lower water absorption rate and smaller molding shrinkage; and the pollution of waste plastics and vegetable fibers to the environment is reduced.

The present invention is to provide a photo-curable transfer sheet suitable for the preparation of an intermediate stamper in a nanoimprint method, in which the mold release properties from a mold having a fine concave-convex pattern used in the preparation of the intermediate stamper and the mold release properties of a cured photo-curable resin that is a product having a fine concave-convex pattern transferred from the intermediate stamper are excellent, and the transfer property of the fine concave-convex pattern is good; and a method for forming a concave-convex pattern by using the above-mentioned photo-curable transfer sheet. The photo-curable transfer sheet 10 having a photo-curable transfer layer 11 comprising a photo-curable composition deformable by application of pressure which comprises a polymer and a reactive diluent having a photopolymerizable functional group, wherein the polymer is an acrylic resin comprising a recurring unit derived from (meth)acrylate having an alicyclic group.

The invention provides a crude oil viscosity-reducing and depressant composite and relates to the technical fields of organic chemistry, petroleum industry and pipe system. The composite consists of clay, organic depressant and dispersion medium, wherein the weight ratio of clay to organic depressant is 1:0-1:5; dispersion medium accounts for 1%-99% of the total weight; clay contains montmorillonite, hectorite, nontronite or saponite and is unmodified inorganic clay or organic clay after organic modification. The organic clay is the organic clay obtained through organic cationic modification or the organic clay obtained through organic cationic modification and silane coupling agent treatment; and the organic depressant is common organic depressant. After the crude oil viscosity-reducing and depressant composite is used, the viscosity of crude oil is reduced, the viscosity tends to be reduced in the shearing field and crude oil has good low temperature liquidity and ageing.

The invention discloses a functional graphene oxide for adjusting and controlling the dispersibility of a solvent by using an organic chain segment as well as a preparation method thereof. The structural formula of the functional graphene oxide is shown in specification, wherein R is equal to R1, R2 and R3. The preparation method comprises the following steps: 1, dispersing graphite oxide prepared by a Hummers method in N, N-dimethylformamide to form uniform dispersion liquid; 2, adding a thionyl chloride agent into the product obtained in step 1 to perform reflux reaction to synthesize an intermediate product of graphite oxide activated by acyl chloride; 3, distilling the mixed liquor obtained in step 2 under reduced pressure to remove excessive thionyl chloride; 4, adding pyridine and graft organic molecules into the product obtained in step 3, and heating and stirring the mixture; and 5, filtering, washing and then drying the mixed liquor obtained in step 4. The functional grapheneoxide can disperse well in different solvents, particularly solvents with low polarity and low boiling point, can be preferably compatible with multiple polymer molecules, leads the preparation of nano particles/ polymer nano composite materials to be possible, and has good application prospects and economic benefits.

The invention relates to a segmented copolymer with a fully-saturated soft segment and a crystallizable hard segment and a preparation method of the segmented copolymer. A segmented copolymer with a fully-saturated polyisobutene segment as the soft segment and a crystallizable polystyrene or polyalkyl substituted styrene segment as the hard segment is synthesized by combining cationic polymerization of isobutene with cationic steric polymerization of styrene or alkyl substituted styrene cations, wherein as the hard segment has the crystallizability, physical crosslinking points are more stable, not only is a self-enhancement role achieved, but also the softening temperature of the segmented copolymer is effectively improved, and the melting point ranges from 150 DEG C to 210 DEG C; and according to the segmented copolymer, the use temperature is improved by 50-110 DEG C, and the heat resistance, the material size stability and the physical and mechanical properties are also improved.

An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid-liquid extraction and extractive distillation. Current industrial sulfolane solvent based liquid-liquid extraction processes employ a liquid-liquid extraction column, an extractive stripping column, a solvent recovery column, a raffinate wash column, and a solvent regenerator. The improved process for aromatic hydrocarbon recovery from a mixture of aromatic and non-aromatic hydrocarbons requires transformation of the extractive stripping column into a modified extractive distillation column. The revamping incorporates the unique advantages of liquid-liquid extraction and extractive distillation into one process to significantly reduce energy consumption and increase process throughput. The revamp entails essentially only piping changes and minor equipment adjustments of the original liquid-liquid extraction facility, and is therefore, reversible.

The invention provides a nanometer silver disinfectant, which contains nanometer silver and an additive, wherein the additive consists of a surfactant and an active component; the surfactant consists of one or more of tween 80, tween 20, sodium dodecyl sulfate, coconut oil fatty acid monoethanolamine, and coconut oil midopropyl betaine; and the active component consists of one or more of houttuynia cordata thunb volatile oil, mint volatile oil, borneol, rhizoma atractylodis volatile oil, radix sophorae flavescentis total alkaloid, and cnidium fruit volatile oil. Through synergic actions, the nanometer silver and the additive in the nanometer silver disinfectant can greatly increase the speed of the nanometer silver to enter the microorganism cytoplasm while the nanometer silver is ensured to be safe and nontoxic so as to achieve the function of fast sterilization by the nanometer silver; besides, the nanometer silver disinfectant can be applied to keeping the long term killing effect on microorganisms.

The invention discloses a PET (polyethylene terephthalate) protective film for preparing a flat-panel display, which is characterized by comprising an optical-level PET protective film base material and low-polarity pressure-sensitive adhesive, wherein the low-polarity pressure-sensitive adhesive is coated on the upper surface of the optical-level PET protective film base material. Since the pressure-sensitive adhesive has the characteristics of low polarity and high cohesive force, is inert, and can be instantaneously attached to the surface of the glass material of the flat-panel display, the protective film prepared from the pressure-sensitive adhesive, optical-level PET protective film and the like has the characteristics of no shedding, easy stripping after coating by vaporization, no adhesive residue, no pollution, high temperature resistance and static resistance, and can effectively avoid damaging the glass lens in the stripping process.

The invention discloses a 3D printing photosensitive resin material. The 3D printing photosensitive resin material comprises the following components in parts by weight: 10-50 parts of a low-viscosityphotosensitive resin oligomer, 10-50 parts of organosilicone modified epoxy acrylate, 30-50 parts of a reactive diluent, 1-5 parts of a photoinitiator, 1-5 parts of an auxiliary agent and 0.01-1 partof a pigment. The 3D printing photosensitive resin material is very low in viscosity and odor, high in curing rate, high in precision of a printed product and universal in universality; meanwhile, the organosilicone modified epoxy acrylate resin is obtained by grafting silicon onto a molecular chain of epoxy resin, so that the polarity of an organosilicone component is reduced and the compatibility thereof in the photosensitive resin material can be improved; in addition, the content of the organosilicone is high, and the organosilicone component in a branched-chain state contributes to movement of the molecular chain and can easily migrate to an interface between a 3D printing trough and the photosensitive resin material, so that the 3D printing photosensitive resin material shows excellent release capability.

The invention discloses high weather resistance environment-friendly cable fire-refractory coating and a preparation process thereof, belonging to the technical field of coating. The process adopts a base material, namely acrylic ester elastic emulsion, as a main film-forming substance, dopes high polymerization degree ammonium polyphosphate into the base material, has good film-forming effect and water resistance. The method particularly selects Number 70 chlorcosane and diantimony trioxide as synergistic flame-retardant to greatly improve the fire retardant performance, has low proportion of pigment and the base material, optimizes compatibility of a fire retardant system; the coating has weather resistance and has oil resistance for selecting fluorocarbon surfactant. The process improves water resistance and weather resistance of the coating, and adopts titanate coupling agent to improve the combining firmness of the pigment, the base material and cable base materials, and the weather resistance of the coating is further improved. Green and environment-friendly water is used as solvent to reduce cost, and as the solvent is removed in preparation or construction, the coating does not pollute the environment and not hurt the health of operators.

This invention relates to a method and device to produce esterified, olefinated/esterified, or thermochemolytic reacted bio-oils as fuels. The olefinated/esterified product may be utilized as a biocrude for input to a refinery, either alone or in combination with petroleum crude oils. The bio-oil esterification reaction is catalyzed by addition of alcohol and acid catalyst. The olefination/esterification reaction is catalyzed by addition of resin acid or other heterogeneous catalyst to catalyze olefins added to previously etherified bio-oil; the olefins and alcohol may also be simultaneously combined and catalyzed by addition of resin acid or other heterogeneous catalyst to produce the olefinated/esterified product.

The invention relates to a cathode electrophoretic (CED) coating, in particular to a resin emulsion for a hydrophobic cathode electrophoretic coating and a preparation method thereof. The resin emulsion for the hydrophobic cathode electrophoretic coating is prepared by reacting cation fluorocarbon resin with a full sealing polyisocyanate crosslinking agent containing an active hydrogen compound as a sealant, then acidifying and adding deionized water to be dispersed; the cation fluorocarbon resin is prepared by polymerizing an acrylic acid monomer containing a fluorine monomer and a functional monomer through a solution and carrying out ring opening; and the full sealing polyisocyanate crosslinking agent accounts for 20-25% of the whole monomer mass and is prepared by reacting polyisocyanate with the sealant in the presence of a catalyst. After the resin emulsion is prepared into a cathode electrophoretic coating varnish and forms a film, a contact angle of a coating film and water is 100-120 degrees, therefore, the hydrophobicity, the weathering resistance and the decoration of the water-borne cathode electrophoretic coating are greatly improved.

PCT No. PCT/JP98/00192 Sec. 371 Date Sep. 10, 1998 Sec. 102(e) Date Sep. 10, 1998 PCT Filed Jan. 20, 1998 PCT Pub. No. WO98/32729 PCT Pub. Date Jul. 30, 1998An alicyclic polyamine of the formula (1) wherein Y1 represents a saturated aliphatic hydrocarbon group and R1 through R4 are the same or different and each represents hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group. The alicyclic polyamine can be obtained by subjecting a 3-formylcycloalkanone or 3-formylcycloalkenone to reductive amination reaction.

The invention discloses a universal construction method for a protein-targeting chimeric molecule compound. The objective of the invention is to provide a method for adjusting the level of proteins by degrading the proteins through targeted ubiquitination. The construction method mainly comprises the following steps: 1) locating and analyzing a three-dimensional structure of a target protein and predicting active sites; 2) selecting a compound database; 3) virtually screening ligand compounds having high degrees of adaption to the target protein by using a computer; 4) acquiring the screened ligand compounds and screening an optimal ligand compound of the target protein through detection of interaction between micromolecules and the proteins; 5) constructing a protein-targeting chimeric molecule compound composed of the optimal ligand compound of the target protein, ubiquitin ligase E3 identification ligand and Linker connecting the optimal ligand compound of the target protein to the ubiquitin ligase E3 identification ligand by using a combination manner simulated by the computer; and 6) chemically synthesizing the protein-targeting chimeric molecule compound. With the method provided by the invention, the protein-targeting chimeric molecule compound can be rapidly and highly efficiently prepared, and specific degradation of intracellular target proteins is realized.

The invention discloses molecularly imprinted polymers (MIPs) for detecting melamine and a preparation method thereof. The MIPs are prepared by the steps as follows: cyromazine is used as a virtual moulding board and is polymerized with a functional monomer, a cross linker agent, a pore-foaming agent and an initiator at the temperature from 50 to 80 DEG C to obtain a bulk polymer; and after being processed by the operations of pulverization, screen separation, moulding board removal by acetic acid methanol and methanol, the bulk polymer is processed by vacuum drying to prepare the MIPs which have high cross reaction and outstanding selectivity to melamine. The invention selects the cyromazine as the virtual moulding board to prepare the MIPs, and avoids the problem that the melamine is hard to dissolve in a polymerization system and the problem that when the MIPs prepared by using the melamine as the moulding board is used for solid phase extraction of fill materials, moulding board leakage can lead to an inaccurate result; the invention selects the mixed system of methanol and water as the pore-foaming agent, and the prepared MIPs have high compatibility with the melamine in an aqueous solution; and used as a sample pre-processing material for analyzing the melamine, the prepared MIPs have broad application prospect.

The invention relates to a preparation method of a dentritic tetrameric cationic quaternary ammonium surface activity monomer, which includes steps of fully mixing methyl acrylate and monomer 3, 3-diamido-N-methyldipropylamine and then performing addition reaction; adding 6- bromine-1-hexene to perform quaternization reaction; depressurizing and removing solvent; then adding absolute ether as precipitator to wash for three times; adding N, N-dimethyl-1, 3-propane diamine to perform amidation; depressurizing and removing excessive N, N-dimethyl-1, 3-propane diamine to perform amidation; addinglong-chained monomer 1-dodecyl bromide to perform quaternary amination reaction; after finishing the reaction, repeatedly washing for over three times to obtain the pure dentritic tetrameric cationicquaternary ammonium surface activity monomer. The preparation method is easy to obtain raw materials, simple in synthesis step and product purification, high in yield, safe in use, convenient to store, low in temperature required by the process, simple and easy-controlled operation, low in energy consumption, wide in application prospect; the preparation method is applicable to the industrial production.