152results about How to "Increase viscosity" patented technology

The present invention relates to formulations of 3-(6-(1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxamido)-3-methylpyridin-2-yl)benzoic acid, pharmaceutical packs or kits thereof, and methods of treatment therewith.

Multiple shape forming regions R1 each extending in a longitudinal direction of an absorbent article are formed in a top sheet in a cross direction. In each of the shape forming regions R1, a waveform including a top area T, a bottom area B, and a wall area between the top area T and the bottom area B is continuously formed in the longitudinal direction. The fiber density of the top sheet in the wall area W is set lower than the fiber density of the top sheet in the top area T or the bottom area B.

A method for improving the lubricating properties of a isomerized distillate base oil having a kinematic viscosity at 100 degrees C. between about 2.5 cSt and about 8 cSt, the method comprising blending with said isomerized distillate base oil a sufficient amount of a pour point depressing base oil blending component to reduce the pour point of the resulting base oil blend at least 3 degrees C. below the pour point of the distillate base oil wherein the pour point depressing base oil blending component is an isomerized petroleum derived base oil containing material having a boiling range above about 1050 degrees F.; also lubricating base oil blends prepared according to the process; and the pour point depressing base oil blending component.

There is a method for enhancing the recovery of oil from a reservoir. The method has the step of a) introducing a flooding fluid into the reservoir and b) extracting the oil through a wellbore at a location different than the point of introduction of the flooding fluid into the reservoir. The flooding fluid has water and an amount of one or more non-polymeric viscoelastic surfactants sufficient to provide an interfacial surface tension of about 1 mNm or less and a viscosity of about 10 cps or more. The one or more surfactants is selected from the group of one or more cationic surfactants, one or more zwitterionic surfactants, one or more amphoteric surfactants, one or more anionic surfactants, and combinations thereof.

The invention relates to a method for enhancing levels of polyunsaturated fatty acid levels in thraustochytrid fungi, using media supplemented with polyvinyl pyrrolidone (PVP) to increase viscosity and which comprises: (a) providing a thraustochytrid fungus strain NIO-TH 21, corresponding to the species Ulkenia radiata Gaertner, being the culture with Accession No. AB22115 of the National Institute of Bioscience and Human-Technology, Japan; (b) inoculating the above said strain in a culture medium; (c) growing the culture for 2 days at a temperature ranging from 25 to 30° C.; (d) obtaining the cultures for use as innoculum using the above said medium to inoculate a medium with different concentrations of polyvinyl pyrrolidone (PVP); (e) growing the culture separately for 2 to 5 days at a temperature ranging from 25 to 30° C.; and (f) harvesting the cells from the above culture by centrifugation and extracting the enhanced amounts of docosahexaenoic acid (DHA) and eicosapentaenoic acids (EPA).

The invention discloses a preparation method of hollow fiber in coaxial electrostatic spinning. The method includes a first step of selecting synthetic macromolecule and enabling the synthetic macromolecule to be solved in solution and stirred until the synthetic macromolecule is completely solved according to prepared final fiber, and a second step of using the solution obtained in the first step as outer pipe spinning liquid which is injected into an outer pipe of a coaxial spinning nozzle, ventilating air into an inner pipe and conducting the coaxial electrostatic spinning under the condition of room temperature. The prepared fiber is in an obvious hollow structure and can be applied to the medical field of drug carriers, artificial dialysis and the like. The preparation method of the hollow fiber in the coaxial electrostatic spinning has the advantages of being simple and convenient to operate, temperate in reaction condition, low in cost, and capable of being completed just by one step without need of using inner layer materials and subsequent processing, greatly saving time and material cost, meanwhile avoiding influences of the remained inner layer materials on the hollow fiber and having good application prospect.

The invention relates to metakaolin-based polymer foam concrete and a preparation method thereof. Metakaolin, coal ash and a coagulation accelerating agent are added into a mixing machine in proportion to be mixed to be uniform, an alkali excitant and water are added in proportion, and mixing is carried out to prepare slurry; while the slurry is prepared, a foaming agent is diluted with water in proportion of 1: 15, a high-speed mixing machine or a vacuum foaming machine is adopted for preparing fine and stable foam; and according to density design requirement, the prepared foam is blended into the uniformly mixed slurry in volume ratio to be mixed and foamed, wherein the volume ratio of the foam to the slurry is (1-4):1, and mixing is carried out for 2.5-3min until the foam is uniformly dispersed in the slurry, thus freshly blended metakaolin-based polymer foam concrete is prepared. Compared with the traditional cement-based foam concrete taking silicate cement as a main cementing material, the metakaolin-based polymer foam concrete has the characteristics of environmental friendliness, higher strength, low thermal conductivity, good heat insulating property and the like, and can be used for producing various foam concrete products.

The present invention provides a direct manufacturing process operable to fabricate three-dimensional physical objects. These three-dimensional physical objects have improved mechanical properties over existing direct manufactured objects. The direct manufacturing process includes an extrusion process, a polymer application process, and a solidification process. The extrusion process deposits a thermoplastic polymer in a series of sequential layers wherein the series of sequential layers are deposited in predetermined patterns. The polymer application process applies compatible polymer(s) after the deposition of each thermoplastic layer. The compatible polymer may be applied in a same or different predetermined pattern when compared to that of the previously deposited thermoplastic layer. The compatible polymer diffuses into voids within the thermoplastic layer. The object is solidified as a series of thermoplastic layers and compatible polymer(s) to produce a three-dimensional physical object that exhibits a combination of the mechanical properties of both the thermoplastic layers and compatible polymers.

The invention discloses a method for preparing carboxymethyl chitosan. The method comprises the following steps of by using chitin as a material, alkalifying the chitin, carrying out deacetylation reaction by using a cooling-heating alternative method to produce chitosan sodium salt; and then, carrying out carboxylation under an alkaline condition to obtain a carboxymethyl chitosan product. The method disclosed by the invention is simple in process and easy to control, so that a chain scission phenomenon appearing due to long-term high temperature reaction during deacetylation reaction of a chitosan molecular chain is avoided, thereby obtaining carboxymethyl chitosan which is high in viscosity, high in degree of substitution and better in water solubility; moreover, the method is suitable for large-scale industrial production.

A method for increasing the foam stability of foams made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric foam stabilizer containing at least one portion that is a partially hydrolyzed polyvinyl ester or partially hydrolyzed polyacrylate. The foam stabilizer allows foams to be used at temperatures at which the unfoamed fluids would not have stable viscosity, and allows use of lower viscoelastic surfactant concentrations in the liquid phase. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

A composition exhibiting reverse thermal gellation properties comprises a block polymer having the structure:wherein A is a polyester unit, B is a poly(ethylene oxide) unit, C is a poly(propylene oxide unit, E is a chain extender or crosslinking agent unit, n ranges from 0 to 20, and m is greater than 2, said block polymer possessing an EO (ethylene xide):PO (propylene oxide) ratio ranging from about 0.2:1 to about 40:1, said composition having a final viscosity at a final temperature of more than twice the initial viscosity at an initial temperature, said final temperature being at least 10° C. higher than said initial temperature.

A certain viscosity index (VI) improving additive may be used to increase the viscosity of an autoamotive fuel composition, by an amount greater than that which theory would have predicted to occur to improve the acceleration performance of an internal combustion engine into which the fuel composition is introduced. The fuel composition is suitably a diesel fuel composition, and the additive suitably comprises a block copolymer which contains one or more monomer blocks selected from ethylene, propylene, butylene, butadiene, isoprene and styrene monomers. The additive is preferably used in the composition at a concentration of 0.5 % w/w or lower.

The invention relates to a method for capturing PM2.5 fine particles through water mist charged coagulation for electric precipitation. The method comprises an electrostatic precipitation part and a liquid atomization part. Atomized liquid droplets are subjected to corona charge in an electric field; the droplets are charged; the charged droplets collide with the fine particles; the fine particles are agglomerated through coagulation; and charges are transferred on the fine particles, thereby improving charging performances of the particles and effectively increasing removal efficiency of the fine particles. The invention also provides a device for capturing the PM2.5 fine particles through water mist charged coagulation for electric precipitation. The device comprises an electrostatic precipitation part and a double-fluid jet atomization part. The double-fluid jet atomization part comprises a gas supply pipeline, a water supply pipeline and a plurality of nozzles. The device is small in occupied area, simple in structure and steady to operate; and the removal efficiency of the fine particles can reach over 95%.

The invention discloses a nano-silica emulsifying water plugging agent and application thereof. The nano-silica emulsifying water plugging agent comprises the following components: 0.5-20wt% of nano-silica, 0.02-5wt% of a surfactant and the balance of water. When the nano-silica emulsifying water plugging agent is applied to crude oil, a uniform and stable emulsion with relatively high viscosity can be acquired, so that relatively high plugging strength is achieved; the water plugging agent is simple in composition and easy for oil field application.

A method and an apparatus for conforming a blank onto forming surface sections of a forming tool by drawing a vacuum against an elastic vacuum bag for transmitting forming forces from the elastic vacuum bag to the blank. The elastic vacuum bag includes at least one bag section having a different stiffness than other bag sections. The at least one bag section is an elongated bag section having a stiffness larger than that of surrounding bag sections. The location of the elongated bag section of the elastic vacuum bag corresponds, when the elastic vacuum bag after completion lies against the forming surface sections having the blank in between, with an elongated forming surface section of the forming tool where the blank requires a forming force being larger than that of the surrounding bag sections.

The present invention is directed to compositions and methods for inducing, promoting or otherwise facilitating pain relief. More particularly, the present invention relates to the use of a compound which either directly or indirectly prevents, attenuates or reverses the development of reduced opioid sensitivity, together with a compound which activates the opioid receptor that is the subject of the reduced opioid sensitivity, in methods and compositions for the prevention or alleviation of pain, especially in neuropathic conditions and even more especially in peripheral neuropathic conditions such as painful diabetic neuropathy (PDN).

The invention relates to a novel method for synthesizing thiotriazinone (TTZ) by using a mixed solvent. The synthetic process comprises the following steps: performing cyclization reaction on 2-methylthiosemicarbazide, the mixed solvent, diethyl oxalate and sodium methylate at 0-45 DEG C to generate triazine ring sodium salt, and acidifying through hydrochloric acid to obtain thiotriazinone. Due to the use of the mixed solvent, the system viscosity of the synthetic process is greatly improved, the TTZ cyclization yield is increased to be more than 90% (by 2-methylthiosemicarbazide), and the content of a byproduct-1-methyl-5-sulfydryl-1,2,4-triazole-3-methyl carboxylate is less than 0.002%, namely less than 20ppm.

The invention relates to a curing accelerator for a curing resin obtained by reacting a phosphine compound (a) with a compound (b) having at least one halogen atom substituted on an aromatic ring and at least one proton atom which can be discharged, and subjecting the reaction product to dehydrohalogenation, a curing resin composition containing the curing accelerator, and an electronic component device having a device component encapsulated with the curing resin composition. The curing accelerator exhibits superior curability under moisture absorption, flow properties, reflow cracking resistance and high-temperature storage characteristics.

The present invention discloses a system for enabling client side of the third pirty jointing in game quickly. The system comprises a client side of the third pirty, an Activex control, a game lobby and a server. The clinet side of the third pirty proposes inquiry about game situation of the client to the game lobby. The Activex control is used in establishing an interface between the clinet side of the third pirty and the game lobby. The game lobby can receive proposal of the clinet side of the third pirty proposes inquiry about game situation of the client, transfer the proposal to the server and subsequently send back and display result about the inquiry from the server. The server is used for storing information about game situation of the client. The invention additionally discloses a method enabling client side of the third pirty jointing in game quickly. The system and themethod in the present invention are helpful in achieving interaction between the game lobby and all client sides of the third pirty as well as speeding up access in game.

Viscoelastic surfactant (VES) based fluid systems are effective to pre-saturate high permeability subterranean formations prior to a treatment operation that would undesirably suffer from high fluid leakoff. The fluid systems may include brine, a viscosity enhancer, as well as the VES, and a high temperature stabilizer. The stabilizer may be an alkaline earth metal oxide, alkaline earth metal hydroxide, alkali metal oxide, alkali metal hydroxide, Al₂O₃, and mixtures thereof. The viscosity enhancer may include pyroelectric particles, piezoelectric particles, and mixtures thereof. The fluid system is easy to pump into the formation, and after initial pumping, the fluid system will soak into and occupy or “pre-saturate” the pores of the formation prior to pumping of a second treating fluid for fracturing, gravel packing, frac-packing, and the like. The methods are practiced in the absence of acids typically used in acidizing operations, such as hydrochloric acid and hydrofluoric acid.

The invention relates to a high-temperature-resistant pressure-sensitive adhesive tape and a heat-resistant pressure-sensitive adhesive used by the same. The high-temperature-resistant pressure-sensitive adhesive tape comprises a substrate layer, a heat-resistant primer layer and a heat-resistant adhesive layer which are sequentially laminated. The heat-resistant pressure-sensitive adhesive comprises 40-80 parts of 2-acetaminoacrylic acid, 30-50 parts of ethylene glycol dimethacrylate, 10-20 parts of octadecyl acrylate, 2-10 parts of phenyltrimethoxy silane, 2-10 parts of vinyltriethoxysilane, 2-8 parts of gamma-(2,3-epoxy-propoxy)propyltrimethoxy silane, 1-6 parts of nano silicon dioxide, 1-3 parts of hexafluoro-2,4-acetyldione aluminum, 2-6 parts of polyethyleneglycol, 2-5 parts of emulsifier, 0.5-2 parts of initiator and 200-400 parts of deionized water. The prepared heat-resistant pressure-sensitive adhesive tape can work at 70-160 DEG C, can resist the high temperature of greater than 600 DEG C within a short time, and has the advantages of small surface compression deformation, wear resistance, impact resistance, heat resistance and abrasion resistance.

A system and method for sealing a passage around a cable is disclosed. Embodiments of the system can include an axial passage, such as a conduit and subsea wellhead housing connected to a wellbore, that can have a cable extending therethrough. The system can include an upper restrictor and a lower restrictor for closing the axial passage. An injection module having an injector and a reservoir can be fluid communication with the axial passage at an axial location between the upper restrictor and the lower restrictor. The injector can discharge a curable sealant initially stored in the reservoir into the axial passage so that at least a portion of the sealant contacts the cable at the axial location of the restrictor while the cable remains static.

Disclosed herein is a fracturing fluid comprising a carrier fluid; a polymer that is soluble in the carrier fluid; the polymer being a synthetic polymer; the synthetic polymer being operative to increase the viscosity of the carrier fluid to about 5 to about 50 centipoise; the fracturing fluid being operative to reduce friction during a downhole fracturing operation and to transport a proppant during the downhole fracturing operation.

The invention relates to a hydrophobic association polymer with various loop-structure side chains and a preparation method and application thereof. The method comprises the steps such as preparing a monomer mixture solution, and synthesizing and purifying a hydrophobic association polymer; the hydrophobic association polymer of the invention has microbial degradation preventive performance and corrosion inhibiting performance, is temperature-tolerant and salt-tolerant and is also environment-friendly. Therefore, the hydrophobic association polymer has a promising application prospect in intensive oil exploitation.

An encapsulant is described for an optoelectronic device or optical component, which provides a coefficient of thermal expansion of less than 50 ppm/° C., with a variation of less than ±30%, and further provides an optical transmittance of at least 20% at a wavelength in the range of 400 to 900 nm, at an encapsulant thickness of about 1 mm. The encapsulant includes a filler consisting essentially of glass particles having diameters smaller than 500 μm, being essentially free of titania and lead oxide, and having a refractive index in the range of 1.48 to 1.60, with a variance of less than about 0.001. A method for making the encapsulant also is described, the method including steps of (1) processing the glass to form particles having diameters between 1 and 500 μm, (2) preparing an epoxy resin composition having at a cured stage a refractive index close to that of the glass filler particles, (3) mixing the epoxy resin composition with the filler particles to form a filled epoxy resin composition, (4) encapsulating an optoelectronic device with the filled epoxy resin composition, and (5) curing the filled epoxy resin composition.

The present invention relates to innovative materials which can be crosslinked by means of two different crosslinking mechanisms, the first crosslinking mechanism being an irreversible crosslinking. The second crosslinking mechanism is a thermoreversible mechanism.

As a result of this thermoreversible change in the arc length, properties of the crosslinked material can be decisively changed and controlled, including flexibility, elasticity and other mechanical properties, but also chemical properties, the gas permeability and vapour permeability and storage capacity of the network. In this way it would be possible, for example, to store energy sources such as fuels.

A gel fixative composition having increased, viscosity which fixes tissues as well as or better than standard liquid fixative solutions. The gel fixative compositions are less prone to leakage and are less likely to splash or spill from containers when they are mishandled. Because of their viscosity, they are less likely to penetrate surfaces and are more easily cleaned up if spilled. A method of making mixing biological fixative by mixing a solution of a biological fixative with a with a high-shear mixer at about 400 to 600 rpm; dispersing uniformly over time about 0.2 to about 2.0 weight percent of thickener while mixing for 2 to 10 minutes; increasing the mixing speed to about 1000 to 1500 rpm; and then, mixing for about 90 to 120 minutes so that a gel fixative composition is formed having a viscosity between about 1,000 cp and 200,000 cp.

The invention relates to a method for producing cheese, comprising the steps of: providing a milk raw material, subjecting the milk raw material to microfiltration and pre-acidification to produce an acidified casein concentrate, where the microfiltration is performed prior to orsimultaneously with the pre-acidification, concentrating the acidified casein concentrate to produce full concentrated pre-cheese, processing the full concentrated pre-cheese to a cheese product. The invention also relates to cheese having a ratio of total content of β-lactoglobulin and α-lactalbumin to glycomacropeptide of at most about 1.35.

A method for treating water with a membrane filtration unit provides a generally constant filtrate flowrate from one or more membrane filtration units by varying the pressure on the upstream or feed side of the unit(s) as required by changes in the permeability of the (units).

Mineral particles may provide for wellbore fluids with tailorable properties and capabilities, and methods relating thereto. Mineral particles may be utilized in methods that include introducing a wellbore fluid having a density of about 7 ppg to about 50 ppg into a wellbore penetrating a subterranean formation, the wellbore fluid comprising a base fluid and a plurality of mineral particles, and the wellbore fluid having a first viscosity; contacting at least some of the mineral particles with a linking agent so as to link the at least some of the mineral particles, thereby increasing the first viscosity to a second viscosity.