41 results about "Cellulose compounds" patented technology

The present application relates to the technical field of oil exploitation, in particular to a profile control water plugging agent, a preparation method and application thereof. The method comprises the following steps: (1) mixing a cellulose compound, acrylamide and water, then adding a crosslinking agent, and then adding an initiator to perform a polymerization reaction; (2) mixing the material obtained in the step (1) with a metal salt solution, and then performing solid-liquid separation and drying; wherein the cellulose compound is selected from one or more than two of carboxymethyl cellulose, carboxyethyl cellulose and polyanionic cellulose. The profile control water plugging agent is a hydrogel material with a unique double network structure, and has good stability and still maintains good strength under high temperature and high salt conditions.

The present application provides a water-soluble, partially biodegradable dihydroxyalkyl cellulose having about 0.7 to about 2.0 units of dihydroxyalkyl moiety per anhydroglucose moiety, having (i) a molecular weight of dihydroxyalkyl cellulose is in the range of from about 10,000 Daltons to about 1,500,000 Daltons, (ii) a biodegradation rate of ≥3% in an aquatic medium, and (iii) a water solubility at a threshold level of 2 g / L. Also discloses a method for preparing dihydroxyalkyl cellulose and functionalized dihydroxyalkyl cellulose compounds and their use in personal care applications.

The invention discloses a water-based functional building exterior wall coating as well as a preparation process and application thereof, and belongs to the technical field of coatings. The coating is composed of a hydroxy acrylic emulsion, a fluorocarbon emulsion, an iron-doped molybdenum disulfide / nano cellulose compound, composite aerogel powder, modified mordenite, nano SiO2 particles, an intumescent flame retardant, an auxiliary agent and water. Wherein the composite aerogel powder is of a porous structure formed by coating hollow Fe2O3 / TiO2 with SiO2; the intumescent flame retardant is prepared from ammonium polyphosphate, pentaerythritol and melamine according to a specific proportion. The preparation process of the coating comprises a plurality of steps, such as dispersing, stirring, pH adjusting and the like. The coating has excellent properties, such as low heat conductivity coefficient, high antibacterial rate, long flame retardant time and good artificial aging resistance, and can be applied to building exterior walls. Compared with the prior art, the problems of function stacking performance offset, poor nano material compatibility and the like are solved, and the application prospect is wide.

A significant reduction in conversion rate has been observed with a recycled styrene-based resin composition obtained by polymerizing a recycled styrene monomer produced by a conventional method compared with a styrene-based resin composition obtained by polymerizing a petroleum-derived styrene monomer. The purpose of the present invention is to provide a styrene monomer composition comprising (A) a recycled styrene monomer derived from a pyrolysis product of a styrene-based resin product containing a cellulose-based compound, and (B) a pyrolysis compound derived from a pyrolysis product of the styrene-based resin product other than the recycled styrene monomer (A), wherein the pyrolysis compound (B) is contained in an amount of 5 × 10-2 parts by mass or less with respect to 100 parts by mass of the recycled styrene monomer (A).

The invention discloses a method for improving the fermentation stability of straw mixed sugar, and belongs to the technical field of lactic acid fermentation. The invention discloses a method for improving the fermentation stability of straw mixed sugar. The method comprises the following steps: pretreating plant straws to obtain heald fibers; carrying out enzymolysis on the heald fibers by utilizing cellulose compound enzyme to obtain enzymatic hydrolysate; filtering the enzymatic hydrolysate to obtain plant-based straw sugar; the straw sugar and the finished product sugar are compounded into compound straw sugar; the compound straw sugar is used as a fermentation carbon source for fermentation production of lactic acid. The prepared compound mixed sugar can reduce the utilization preference of the strain on a fermentation carbon source, effectively improves the utilization rate of the strain on the mixed sugar prepared from different types of crop straws in the fermentation process, improves the lactic acid yield under the same initial sugar concentration, and further reduces the lactic acid fermentation cost.

Cosmetic composition comprising a particulate cellulose compound, hydrophobic silica aerogel particles, and a wax of plant origin The present invention relates to a composition, in particular a cosmetic composition, in particular for caring for keratin materials, comprising: at least one particulate cellulose compound; at least hydrophobic silica aerogel particles; and at least one wax of plant origin having a melting point above 25°C. It also relates to a cosmetic process for caring for keratin materials comprising the application of this composition to the keratin materials. Figure for abstract: None

The method for producing the hydrogel of the present application includes: (A1) a step of preparing a treated object containing a water-soluble cellulose compound and water; (B1) a step of separating water from the treated object by heating the treated object; and (C1) a step of cooling the treated object whose cellulose compound content is increased by the treatment in step (B1), and repeating the series of steps from step (B1) to step (C1) until the cellulose compound content of the treated object reaches 10% by mass or more.

A water-soluble film-forming compound selected from the group consisting of a water-soluble cellulose compound and gelatin; optionally a gelling agent, optionally a gelling aid; provided is a TiO2-free hard capsule shell containing ZnO and CaCO3, wherein ZnO and CaCO3 are in amounts suitable for imparting white color to the film. Also provided are a TiO2-free suspension for preparing hard capsules, and a capsule product containing TiO2-free hard capsules filled with a formulation containing an active ingredient.

A pharmaceutical composition to be applied to an ocular surface is disclosed that includes a quaternized chitosan derivative to provide antimicrobial activity against gram-negative bacteria, gram-positive bacteria, fungi, and viruses as an active ingredient. This is combined with a cellulose compound acting as a viscosity agent and demulcent to protect and lubricate mucous membrane surfaces. This is further combined with a humectant and tonicity agent to retain moisture on the ocular surface and maintain a comfortable osmolarity for the eye. This is further combined with a buffer / pH adjuster system configured to support a physiologically tolerable pH of about 6.0 to 8.0. Finally, this is combined with purified water as a diluent.

The present invention provides a conductive material slurry for a secondary battery electrode, which reduces the surface resistance of a thin film made of the conductive material slurry while reducing the viscosity of the conductive material slurry. An embodiment of the present invention provides a conductive material slurry for a secondary battery electrode, comprising: a conductive material; and a dispersant; the dispersant contains a cellulose-based compound and an organic acid salt.

A method for producing a hydrogel according to the present disclosure includes: (A1) a step of preparing an object to be treated including a water-soluble cellulose-based compound and water; (B1) a step of heating the object to be treated so as to separate water from the object to be treated; and (C1) a step of cooling the object to be treated that has acquired an increased content percentage of the cellulose-based compound through the treatment in step (B1), and a series of steps from step (B1) to step (C1) are repeated until the content percentage of the cellulose-based compound in the object to be treated reaches 10% by mass or more.

The present invention relates to a sprayable aqueous acoustic damping composition comprising a polymer, a filler, and a water-soluble cellulose compound or a water-soluble starch wherein the filler comprises a filler (i) having an average particle size (d50 particle size) of about 7 to 18 [mu] m, and a filler (ii) having an average particle size (d50 particle size) of about 2 to 5 [mu] m.

The present invention provides a method and apparatus for discriminating the compounding of cellulose in a composite resin, which can discriminate the compounding of cellulose regardless of the type of composite resin even at low concentrations. Infrared light is irradiated onto a composite resin containing cellulose, and the reflected light from the composite resin irradiated with the light is received. Among the reflection or absorption spectra obtained from the reflected light, normalization is performed at the peak position that is the largest among the peaks at 2800 cm-1 or higher and 3000 cm-1 or lower, which is the C-H stretching peak caused by the composite resin, to obtain a reflection or absorption spectrum for discrimination. Using the reflection or absorption spectrum, the ratio value of the spectral intensity (background intensity) below 1000 cm-1 at a position different from the wave number of the peak showing the resin of the discriminated resin type is obtained according to the discriminated resin type. By using the ratio of the obtained spectral intensity (i.e., the background intensity), the compounding of cellulose compounded in the composite resin can be discriminated with high accuracy.

The present invention provides a cellulose compounding cationic starch device and its wet-strengthening process, which relates to the field of paper towel production. The device comprises: a compounding and mixing tank; a connecting air path connected to the bottom of the compounding and mixing tank, the connecting air path being connected to an external air supply device; a compounding and mixing tank being clamped to the top of the left wall of the compounding and mixing tank; a motor being installed on the left wall of the bottom of the compounding and mixing tank; and a material discharge baffle being slidably connected to the front side of the bottom end face of the compounding and mixing tank. High-pressure gas in an outlet pipe is blown toward the bottom of the compounding and mixing tank through an outlet notch and a reflux hood. The gas lifts flocculent fibers settled at the bottom of the compounding and mixing tank, causing the flocculent fibers to float to the top of the liquid surface, thereby enhancing the adsorption between the cationic starch and the negatively charged fibers and filler, thereby improving the fine fiber retention rate and reducing energy consumption. This solves the problems of harm to the human body caused by the production of paper towels using chlorine-containing wet-strengthening agents, as well as low fixing efficiency, weak fiber bonding, easy papermaking end, and increased production energy consumption.

The application relates to a negative electrode dispersant, a preparation method thereof and a lithium ion battery. The negative electrode dispersant comprises a cellulose polymer, the cellulose polymer comprises an alkaline cellulose compound and a crosslinking agent, the crosslinking agent comprises a biphenyl compound, the biphenyl compound comprises at least one biphenyl group, and further comprises one or more of an aldehyde group, an acyl group, an ester group and a carboxyl group. The scheme provided by the application can reduce the addition amount of CMC, improve the energy density of the battery, and does not affect the cycle performance and rate performance of the battery.

The present invention relates to a positive electrode comprising a metal strip covered on at least one of its faces with an active material composition comprising: a) as electrochemically active materials, at least one lithium manganese iron phosphate compound of formula LixMn1-y-zFeyMzPO4 with 0.8 ≤ x ≤ 1.2; 0.5 ≤ 1-y-z < 1; 0 < y ≤ 0.5; 0 ≤ z ≤ 0.2 and M is chosen from the group consisting of B, Mg, Al, Si, Ca, Ti, V, Cr, Co, Ni, Cu, Zn, Y, Zr, Nb, S, W, K, Pb, V, Mo, W and mixtures thereof; and b) as binder, a mixture comprising: - at least a first binder chosen from polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE) and its copolymers, polyacrylonitrile (PAN), poly(methyl) or poly(butyl) methacrylate, polyvinyl chloride (PVC), poly(vinyl formal), polyesters, block polyetheramides, acrylic acid polymers, methacrylic acid, acrylamide, itaconic acid, sulfonic acid, elastomers, cellulose compounds and any mixture thereof, and - at least a second binder chosen from non-functionalized vinylidene fluoride (VDF) and hexafluoropropylene (HFP) copolymers.

The present disclosure relates to an adhesive composition comprising a source of metal ions, polycaprolactone, and a cellulose compound, and to a method for repairing bone or tooth material using the adhesive composition.

A pharmaceutical composition to be applied to an ocular surface is disclosed that includes a quaternized chitosan derivative to provide antimicrobial activity against gram-negative bacteria, gram-positive bacteria, fungi, and viruses as an active ingredient. This is combined with a cellulose compound acting as a viscosity agent and demulcent to protect and lubricate mucous membrane surfaces. This is further combined with a humectant and tonicity agent to retain moisture on the ocular surface and maintain a comfortable osmolarity for the eye. This is further combined with a buffer / pH adjuster system configured to support a physiologically tolerable pH of about 6.0 to 8.0. Finally, this is combined with purified water as a diluent.

The present invention relates to stabilized modified release vitamin D formulations and methods of administering the same. A stabilized formulation for controlled release of a vitamin D compound is disclosed. The formulation comprises one or both of 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3 and a cellulose compound. The stabilized formulation exhibits a stable dissolution profile after exposure to storage conditions and demonstrates improved pharmacokinetic parameters compared to unstabilized formulations.

The invention provides a high-weather-resistance flame-retardant wood-plastic composite material based on rare earth / nanocellulose. The high-weather-resistance flame-retardant wood-plastic composite material is prepared from the following raw materials: 25 to 40 parts of wood fiber, 3 to 8 parts of nanocellulose, 10 to 30 parts of high-density polyethylene, 3 to 5 parts of maleic anhydride grafted high-density polyethylene, 3 to 6 parts of calcium carbonate, 4 to 8 parts of kaolin, 2 to 5 parts of lubricant, 0.3 to 0.5 part of silane coupling agent, 1 to 3 parts of rare earth light stabilizer and 8 to 15 parts of halogen-free flame retardant. The nano cellulose and the rare earth light stabilizer are premixed to form a rare earth / nano cellulose compound. The invention also provides a preparation method of the material. The nano-cellulose and the rare earth light stabilizer are premixed to form a compound, a hybrid three-dimensional reinforced network is constructed, meanwhile, a gas phase-condensed phase flame retardant mechanism is formed through cooperation of the halogen-free flame retardant and the nano-cellulose and the rare earth light stabilizer, synchronous improvement of weather resistance, flame retardance and mechanical properties of the material is achieved, and the environment-friendly requirement is met.

The invention discloses a low-free-phenol modified furan resin for casting and a preparation method thereof. The cellulose aldehyde compound is prepared by catalytic decomposition of the cellulose compound with the sulfuric acid and the aluminum-containing compound and then replaces part of formaldehyde and acetone for aldehyde-ketone reaction, free aldehyde in the resin is reduced, anacardol replaces part of phenol for reaction, and free phenol in the resin is effectively reduced; the polyhydric alcohol replaces part of furfuryl alcohol to react, and the prepared phenolic aldehyde modified furan resin introduces a straight chain structure on the basis of reducing the furfuryl alcohol content, so that the flexibility of the resin is improved; lignin is modified by six-membered ring lactone to increase reaction active sites and then reacts with furfuryl alcohol, the lignin modified furfuryl alcohol is prepared, the content of free aldehyde of furan resin is reduced, the curing speed of the resin is increased, raw materials do not contain nitrogen, the prepared resin generates less irritant gas in the casting process, and the nitrogen hole defect is avoided.

The application provides anti-deformation and anti-cracking honeycomb activated carbon and a preparation method thereof. The anti-deformation and anti-cracking honeycomb activated carbon comprises the following raw materials: powdered activated carbon powder, hydrophilic fumed silica, aqueous blocked isocyanate emulsion, polydextrose, water-soluble polyether glycol and water. The application replaces water-soluble hydroxyl cellulose compounds with polydextrose and water-soluble polyether glycol, which can not only meet the requirement that the polydextrose and water-soluble polyether glycol do not degrade or become brittle to cause distortion and deformation in the unblocking and preliminary shaping stage, but also can react with the unblocked isocyanate group. The honeycomb activated carbon with a urea group cross-linked three-dimensional network structure gradually formed in the unblocking and hot air drying process can resist the capillary pressure generated by water evaporation in the hot air drying process, reduce the generation of cracks and improve the yield.

A TiO2 free hard capsule shell including a water-soluble film forming compound selected from the group consisting of a water-soluble cellulose compound and gelatin. The shell optionally contains a gelling agent and / or a gelling aid. The capsule shell further includes ZnO, and CaCO3, wherein ZnO and CaCO3 are in a suitable amount to provide a white color to the film. A TiO2 free suspension for preparing the hard capsule and a capsule product comprising the TiO2 free hard capsule filled with a formulation comprising an active ingredient.

To provide a vehicle and a conductive paste with which it is possible to suppress sheet attack of a green sheet while maintaining good smoothness and dry film density of a conductive paste that uses a fine conductive powder and a ceramic powder for miniaturization and thinning of a multilayer ceramic electronic component, and to provide an electronic component and a multilayer ceramic capacitor.　Provided is a vehicle containing a binder resin and an organic solvent, wherein the binder resin contains a polymer compound in which a cellulose compound and a polyvinyl acetal compound are bonded by a sulfur atom, the molar ratio of sulfur atoms contained in the polymer compound to the cellulose compound is 0.3-1.7, and the hydrogen bonding term δh of the Hansen solubility parameter of the organic solvent is 6.5 MPa0.5 or less.

Pin sleeve, manufactured by at least the following steps: - Drying of a cellulose compound obtained as a mixture of at least two cellulose granules, - Feeding the dried cellulose compound into an extruder designed for processing cellulose granules, - optional addition of a blowing agent to the cellulose compound introduced into the extruder, - Melting of the cellulose compound introduced into the extruder in the extruder, - Producing a tubular strand from the cellulose compound melt using the extruder, - Calibrating and cooling the tubular strand supplied by the extruder using a vacuum calibration device, - Cutting the calibrated and cooled tubular strand to length to obtain the pin sleeve.

Pin sleeve, manufactured by at least the following steps: - Drying of a cellulose compound obtained as a mixture of at least two cellulose granules, - Feeding the dried cellulose compound into an extruder designed for processing cellulose granules, - optional addition of a blowing agent to the cellulose compound introduced into the extruder, - Melting of the cellulose compound introduced into the extruder in the extruder, - Producing a tubular strand from the cellulose compound melt using the extruder, - Calibrating and cooling the tubular strand supplied by the extruder using a vacuum calibration device, - Cutting the calibrated and cooled tubular strand to length to obtain the pin sleeve.

The invention relates to the technical field of ceramic and metal interface bonding, in particular to conductive paste, a ceramic product and a preparation method of the conductive paste, the adhesive capacity of the conductive paste on a ceramic substrate can be improved, and an electroplated metal layer can be formed on the surface of the ceramic substrate through electroplating by means of the conductivity of conductive metal powder in the conductive paste. Therefore, metallization treatment of the surface of the ceramic substrate is achieved, and the bonding capacity of the electroplated metal layer and the ceramic substrate is improved. The conductive paste comprises conductive metal powder, an inorganic binder, an organic binder and a solvent, wherein the inorganic binder is a glass welding material, the organic binder comprises a cellulose compound, and the cellulose compound comprises at least one of ethyl cellulose and cellulose nitrate.

To provide a resin composition containing a polyolefin which has sufficient strength and thermal degradability or biodegradability and has high processability as general-purpose plastic.SOLUTION: A degradable resin composition contains a polyolefin-containing resin, a cellulosic compound, and an organic acid metal salt. A molding can be provided which has sufficient strength as general-purpose plastic before heating for degradation but which allows the polyolefin-containing resin to be degraded by the heating for degradation.SELECTED DRAWING: None

The present application provides a water soluble partially biodegradable dihydroxyalkyl cellulose having a dihydroxyalkyl moiety / anhydroglucose moiety of from about 0.7 to about 2.0 units, having (i) a dihydroxyalkyl cellulose molecular weight in the range of from about 10,000 Daltons to about 1,500,000 Daltons, (ii) a biodegradation rate in an aquatic medium of > = 3%, and (iii) a biodegradation rate in an aquatic medium of > = 3%. And (iii) a water solubility at a threshold level of 2 g / L. A method of preparing the dihydroxyalkyl cellulose and functionalized dihydroxyalkyl cellulose compounds and their use in personal care applications are also disclosed.