21 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 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 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.

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 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 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 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 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.

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.

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 invention discloses a preparation method of a high-strength heat-resistant polycarbonate film. The preparation method comprises the following steps: (1) preparing a graphene-cellulose compound; (2) carrying out alkylation on the graphene-cellulose compound, and then adding tea polyphenol for modification treatment to obtain a modified compound; (3) activating the modified compound, and then adding glycidyl methacrylate to obtain filler powder; and (4) mixing the filler powder, ABS high rubber powder and dried polycarbonate to form a mixed material, carrying out melt granulation on the mixed material to obtain granules, drying the granules, and carrying out blow molding to obtain the high-strength heat-resistant polycarbonate film. The polycarbonate film prepared by the method has good strength and heat resistance, the tensile strength and the thermal deformation temperature are relatively high, and the durability of the polycarbonate film is improved.

A process for the manufacture of an anode layer for a polymer electrolyte membrane electrolyser, the process comprising the steps of: (i) forming a catalyst ink comprising an iridium- and / or ruthenium-containing OER catalyst, an ionomer, a solvent, and a cellulose compound; (ii) applying the catalyst ink to a substrate to form the anode layer; and (iii) drying the anode layer. Also described are anode layers for a polymer electrolyte membrane electrolyser, the anode layer comprising an iridium - and / or ruthenium-containing OER catalyst, an ionomer, and a cellulose compound.

Provided is a conductive paste capable of forming an internal electrode layer having a smooth dried film and excellent adhesiveness, an electronic component, and a multilayer ceramic capacitor, in which a fine conductive powder and a ceramic powder are used for the miniaturization and thinning of a multilayer ceramic electronic component. The conductive paste contains a conductive powder, a ceramic powder, a dispersant, a binder resin, and an organic solvent, wherein the binder resin contains a high molecular compound in which a cellulose compound and a polyvinyl acetal compound are bonded via a sulfur atom, the molar ratio of the sulfur atom contained in the high molecular compound to the cellulose compound is 0.3 to 1.7, and the weight average molecular weight of the high molecular compound is 30,000 or more and less than 150,000.

The invention relates to the technical field of bauxite flotation, in particular to a flotation combined inhibitor and a preparation method and application thereof. The flotation combined inhibitor is prepared from the following raw materials in parts by mass: 30 to 50 parts of composite phosphate, 20 to 40 parts of cellulose compounds, 10 to 30 parts of natural polymer products and 5 to 10 parts of sodium silicate. According to the flotation combined inhibitor, efficient desulfurization of high-sulfur bauxite is achieved through synergistic targeted inhibition of composite phosphate, cellulose compounds and natural polymer products; meanwhile, the floatability and the recovery efficiency of the aluminum minerals in the high-sulfur bauxite are guaranteed through the strategies of selective design, low-dosage optimization and stable pH adjustment, and finally the total recovery rate of the aluminum minerals in the high-sulfur bauxite and the desulfurization effect of the high-sulfur bauxite are synchronously improved in the step-by-step flotation process.

The present invention is in the field of cleaning compositions. More particularly, the present invention relates to a laundry cleaning composition for providing improved cleaning benefit. enhanced stain removal benefit. There is a need for a ‘eco-friendly’ cleaning composition having cleaning boosters that provides enhanced cleaning efficacy It provides a laundry cleaning composition providing enhanced. It is found that a cleaning composition comprising specific amount of a water-soluble cellulose containing compound along with select cleaning boosters provides a stable liquid cleaning composition that has a good ‘eco-friendly’ profile and provides improved stain removal benefit. The present invention further describes a unit does product and a process for cleaning a substrate involving the cleaning composition.

The application discloses a preparation method of high-strength heat-resistant polycarbonate film, and the preparation steps comprise the following steps: (1) preparing a graphene-cellulose compound; (2) alkylating the graphene-cellulose compound, and then adding tea polyphenol modification treatment to obtain a modified compound; (3) performing activation treatment on the modified compound, and then adding glycidyl methacrylate to obtain a filler powder; (4) mixing the filler powder, ABS high-gum powder and dried polycarbonate to form a mixture, melting and granulating the mixture to obtain granules, and blow molding the granules after drying to obtain the high-strength heat-resistant polycarbonate film. The polycarbonate film prepared by the method has good strength and heat resistance, and has relatively high tensile strength and heat distortion temperature, thereby improving the durability of the polycarbonate film.