193results about How to "Prevent gelation" patented technology

The present invention provides composite materials that contain formaldehyde-free aqueous binder compositions comprising defatted soy flour of no greater than 43 micron mesh particle size and polymer particles of at least one emulsion (co)polymer. Preferably, the defatted soy flour is present as an aqueous dispersion, or is in denatured form. Also provided are methods of making and using composite materials containing the formaldehyde-free binder compositions.

The present invention provides composite materials derived from formaldehyde-free aqueous binder compositions comprising defatted soy flour of no greater than 43 micron mesh particle size, polymer particles of at least one emulsion (co)polymer, and one or more reducing sugar. Also provided are methods of making and using composite materials containing the formaldehyde-free binder compositions.

To provide a resin composition including: an ethylene-vinyl alcohol copolymer (A) having an ethylene content of from 15 to 65 mol % and a saponification degree of at least 95 mol %, a phosphoric acid salt (B) which can form a hydrate, and a conjugated polyene compound (C) having a boiling point of at least 150° C., wherein the resin composition comprises from 50 to 99 parts by weight of (A), from 1 to 50 parts by weight of (B) and from 0.00001 to 1 parts by weight of (C), based on 100 parts by weight of the total amounts of (A) and (B). This resin composition excels in gas barrier property and also in moisture resistance at high temperatures and high humidities. Therefore, it is suitable for food packaging containers to be retorted.

A formulation composed of a sugar such as glucose and a surfactant such as myristoyl lysophosphocholine (LMPC) has been designed to stabilize both hydrophilic and hydrophobic portions of the glucagon molecule, under prolonged physiological conditions, in a formulation that is sufficiently similar to the pH and osmolarity of plasma so as not to induce or to minimize site irritation. The combination of a simple sugar and an surfactant stabilizes the glucagon molecule in an aqueous solution for seven days at 37° C.

The invention discloses a preparation method of organopolysiloxane resin. The preparation method includes the steps of (1), taking alkoxyorganosilane, an end-capping reagent and an acidic compound as preparation raw materials; (2), feeding the preparation raw materials with uniform stirring, wherein the feeding molar ratio of the end-capping reagent to the alkoxyorganosilane to the acidic compound is (0-40):1:(0.2-5); (3), adjusting the temperature at 40-150 DEG C at which condensation polymerization reaction is conducted for 2-20 hours; (4), terminating the condensation polymerization reaction, adjusting a reaction mixture to be neutral, and purifying a reaction product so as to obtain the organopolysiloxane resin. The preparation method of the organopolysiloxane resin has the advantages of environmental protection and no pollution during production, low energy consumption, short period, high product yield and the like and is more excellent in performance.

The invention relates to siloxane polymers comprising a central polysiloxane polymer block B with organofunctional radicals bonded terminally or laterally to the polymer block and based on IPDI and UV/Vis chromophores or derivatives, in particular UV chromophores, which are covalently bonded via a hydrophobic or hydrophilic linker group Q1′, Q2′, and compositions comprising these siloxanes. Also disclosed are processes for their preparation and their use.

In preferred embodiments, the present invention provides methods of controllably making a vinyl polymer hydrogel having desired physical properties without chemical cross links or radiation. The gelation process is modulated by controlling, for example, the temperature of a resultant vinyl polymer mixture having a gellant or using active ingredients provided in an inactive gellant complex. In accordance with a preferred embodiment, the method of manufacturing a vinyl polymer hyrodgel includes the steps of providing a vinyl polymer solution comprising a vinyl polymer dissolved in a first solvent; heating the vinyl polymer solution to a temperature elevated above the melting point of the physical associations of the vinyl polymer, mixing the vinyl polymer solution with a gellant, wherein the resulting mixture has a higher Flory interaction parameter than the vinyl polymer solution; inducing gelation of the mixture of vinyl polymer solution and gellant; and controlling the gelation rate to form a viscoelastic solution, wherein workability is maintained for a predetermined period, thereby making a vinyl polymer hydrogel having the desired physical property. In further preferred embodiments, the present invention provides physically crosslinked hydrogels produced by controlled gellation of viscoelastic solution wherein workability is maintained for a predetermined period. In another aspect, the present invention provides kits for use in repairing intervertebral disks or articulated joints including components that form the vinyl polymer hydrogel and a dispenser.

The invention discloses a nano organic solvent silicasol and preparation method, which mainly comprises SiO2 particles, organic solvent and end blocking agent by the proportion of SiO2 particles 5-15%, organic solvent 94.5-83.5%, end blocking agent 0.5-1.5%.The grain diameter of SiO2 is between 10-100 nanometer, the pH of the sol system be between 6-9. The sol is prepared through the conventional method for organic solvent silicon oxide sol with a boiling point higher then that of water. The preparation method employs sodium silicate as the raw material.

The adhesive sheet contains a substrate film and an adhesive layer formed at least on one surface of the substrate film. The substrate film is made of a polyimide film showing a degree of curl after a heat treatment at 300° C. of not more than 10%. The adhesive sheet of the present invention can be used for electronic parts and the like exposed to high temperature particularly because warpage and distortion thereof caused by a high temperature treatment are suppressed, and can improve quality and yield of electronic parts and the like.

The invention discloses a method for producing polyamide. The method comprises the following steps: 1, adding a molten diamine to a solid dicarboxylic acid without a solvent, forming a mixed solution of the dicarboxylic acid and the diamine or a suspension with good fluidity in a first polymerization reactor, and forming a prepolymer of polyamide with the inherent viscosity of 0.3-0.7dl/g in a second polymerization reactor; and 2, granulating the prepolymer with a double screw extruder with at least two vent holes, adding prepolymer particles to a solid phase polymerization reactor of a fixedbed, heating the prepolymer particles with hot nitrogen with a certain flow and a certain temperature, reacting for 1-15h to obtain products of polyamide with the inherent viscosity of 1.0-2.5dl/g. Compared with previous polyamide polymerization methods, extra energy costs needed by solvent removal are reduced and the operation cost is reduced because polycondensation is carried out without the solvent; energy consumption in the melting process is reduced and possible problems of raw material oxidation and the like caused by a high melting temperature are avoided because cases that the diamine and the diacid for polyamide production have different melting points and the melting point of the diamine is low, and the molten diamine is added to the solid diacid are skillfully used in the method of the present invention.

Provided is a method for producing surface-treated oxide particles which can be used in an active-material layer for a positive electrode or a negative electrode in a storage battery. Oxide particles in which an alkaline compound is contained in a part or the whole area of the surface of each of the particles are brought into contact with a gas containing a volatile acidic compound to produce a neutralization product by a gas phase reaction, thereby producing surface-treated oxide particles in which the neutralization product is contained. The alkaline compound comprises at least one compound selected from compounds respectively containing lithium (Li), sodium (Na) and magnesium (Mg), the volatile acidic compound comprises at least one compound selected from compounds respectively containing boron (B), phosphorus (P) and silicon (Si), and the oxide particles comprise an alkali-composited oxide containing at least one transition metal selected from manganese, cobalt, nickel, iron and titanium.

Disclosed are a positive active material for a rechargeable lithium battery including a nickel-containing lithium transition metal composite oxide and a coating layer positioned on the surface of the lithium transition metal composite oxide, wherein the coating layer includes vanadium oxide, lithium vanadium oxide, or a combination thereof, a method of manufacturing the same, and a rechargeable lithium battery including the same.

The invention discloses a polyvinyl alcohol nanofiber membrane good in water resistance and a preparation method thereof. In the method, ionized water, organic acid, alcohols, polyvinyl alcohol, a crosslinking agent and a catalyst serve as main raw materials for electrostatic spinning solution; and the degree of crosslinking of the polyvinyl alcohol nanofiber membrane is improved through heat treatment after electrostatic spinning. A disclosed process is green and environmentally friendly. Compared with a conventional nanofiber filtering material, the polyvinyl alcohol nanofiber membrane is free of solvent recovery and solvent residue problems and free of toxic and side effect, and the prepared polyvinyl alcohol nanofiber membrane has excellent water resistance and can serve as a medical dressing or an air filtering material.

The invention relates to a chemical fiber and a manufacturing method thereof, in particular to a full-dull daiamid 6 fiber added with titanium dioxide and a manufacturing method thereof. The full-dull daiamid 6 fiber and the manufacturing method thereof which have less polymer degradation, even yarn levelness, less filoplume and uniform dyeing aim at solving the disadvantages of easy degradation of high polymer fusant, poor evenness of the yarn levelness, high fluctuation of oiling rate, easy occurrence of more filoplume, bad uniformity of dyeing, etc. The invention mainly has the technical proposal that daiamid 6 particle with more than or equal to 1.6% of TiO2 is taken as raw material, treated by melt spinning and cross air blasting through twice of rectification and oiling, and is wound; finally, the full-dull daiamid 6 fiber is obtained.

The present invention is a composition containing a polyester resin containing at least an alicyclic dicarboxylic acid component and an alicyclic diol component, and it is a polyester resin composition which satisfies that a glass transition temperature is 65 DEG C or more and 90 DEG C or less, a refractive index at sodium D line is 1.500 or more and 1.570 or less, a titanium element content is 5 ppm or more and 500 ppm or less, a phosphorus element content is 50 ppm or more and 500 ppm or less and a gel fraction is 50% or less. By the present invention, it is possible to obtain a polyester resin composition having a low refractive index and photoelastic coefficient, and in which a thermally degraded foreign substance is reduced.

The invention discloses a washing machine, which comprises a water inlet valve installed on a supporting component, an automatic liquid detergent feeding device arranged on the supporting component and consisting of a detergent tank, an air pump and a detergent containing part, an opening arranged above the detergent containing part and communicated with the detergent containing part, the water inlet valve and the air, a detergent filling hose connected between the detergent containing part and an upper cover of an outer bucket, and a control part for controlling a series of processes. The control part controls the air pump to act so as to put the liquid detergent into the outer bucket from the detergent tank via the detergent containing part and the detergent filling hose, then the control part controls the water inlet valve to act so as to put water into the outer bucket via the opening, the detergent containing part and the detergent filling hose; the detergent containing part and the detergent filling hose are internally washed so as to prevent the gelatinization of the liquid detergent, so that the liquid detergent can have specified performances.

The invention relates to environment-friendly high temperature-resistant inorganic insulated paint and a preparation method thereof and belongs to the field of preparation of coatings. The environment-friendly high temperature-resistant inorganic insulated paint consists of a component A and a component B, wherein the component A consists of the flowing raw materials in percentage by mass: 41 to 44 percent of silica sol, 18.5 to 19.8 percent of inorganic pigment, 5.3 to 6.3 percent of kaolin, 4.4 to 5.0 percent of mica powder, 2.2 to 3.0 percent of talcpowder, 22 to 24 percent of deionized water, and 2.1 to 2.2 percent of aid; and the component B consists of the following raw materials in percentage by mass: 1.0 to 1.2 percent of acetic anhydride and 98.8 to 99.0 percent of methyltrimethoxysilane. During use, the component A and the component B are stirred and mixed in a ratio and cured; and then a mixture is subjected to air spraying onto metal base materials such as aluminum alloy, stainless steel and the like which are treated. The paint has the advantages of environment-friendliness, high temperature resistance and insulativity, acid and alkali resistance, long normal temperature quality guarantee period, long construction time and the like, and can be cured at normal temperature.

The invention discloses a preparation method of waterborne polyurethane with excellent freeze-thawing stability. The preparation method specifically comprises the steps of: at 20-80 DEG C, adding amino type polyhedral oligomeric silsesquioxane into acetone of excessive isocyanate monomer, reacting to be clear, setting the temperature to be 60 DEG C, adding ethyoxyl-terminated polymer glycol, diol and polyol, and catalyst di-n-butyl tin dilaurate, reacting for one to two hours, and controlling the R value to be 1.50-3.00 in the prepolymerization reaction; then increasing the temperature to be 70-90 DEG C, continuously reacting for one to two hours, then cooling to room temperature, adding water for dispersion, adding a chain extender at 30-50 DEG C to conduct chain extension reaction for two to four hours, and cooling to room temperature to obtain waterborne polyurethane. Through tests, the waterborne polyurethane has favorable wear resistance property and bonding strength, as well as excellent freeze-thawing stability.

The present invention provides composite materials derived from aqueous binder compositions comprising defatted soy flour of no greater than 43 micron mesh particle size, polymer particles of at least one emulsion (co)polymer, one or more amino resin, and, optionally, one or more reducing sugar. Also provided are methods of making and using composite materials containing the binder compositions.

Phenol aralkyistion polymers can be prepared by reaction among a phenolic monomer, at least one styrenic monomer and an aryl diolefin. A phenolic monomer can be initially aralkylated in the presence of an acid catalyst with a first portion of at least one styrenic monomer to obtain an aralkylated phenol. The aralkylated phenol thereafter can be reacted with an aryl diolefin to obtain a phenol aralkylation polymer. Optionally, (though preferably) the phenol aralkylation polymer is further aralkylated with a second portion of at least one styrenic monomer. By employing specific catalyst concentrations, reactant concentrations, reaction temperatures, and reaction times, the formation of mono-functional and non-functional by-products is substantially reduced.

The invention discloses an organosiloxane resin product prepared through anhydrous synthesis. The product is prepared by subjecting alkoxy silane, an end-capping reagent and an acidic compound in a mol ratio of 1: (0-2): (2-10) to a reaction, wherein the alkoxy silane is trifunctional and/or tetrafunctional alkoxy silane, and the acidic compound comprises organic carboxylic acid and an acidic catalyst. The organosiloxane resin provided by the invention has high regularity, narrower molecular weight distribution and PDI of less than 1.8. The invention also provides a preparation method for the organosiloxane resin. According to the method, an anhydrous one-step synthesis process is employed; and changes of the molecular weight parameters of polymers can be induced in a predicted way by controlling a pH value during quenching and the temperature of pressure-reduced distillation. The invention also provides application of the product. Since the organosiloxane resin product has good regularity, the organosiloxane resin product has good application prospects in silicone rubber, adhesives, lubricants, release agents and personal care products.

The intermediate layer material composition for a multilayer resist process in the present invention, which is soluble in an organic solvent, excellent in storage stability, and has no problem with regard to a footing shape, a pattern separation and a line edge roughness in patterning an upper resist, and a pattern formation process using the intermediate layer material composition, in which the intermediate layer material composition for a multilayer resist process, comprises a polymer (component A) containing a repeating unit having on a side chain thereof a specific structure containing a silicon atom-oxygen atom bond, and the pattern formation process using the same.

The invention relates to a cephalosporin ester drug particle in a non-gel state after meeting water, and a preparation method and an application of the drug particle, and belongs to the technical field of pharmaceutical preparations. The drug particle comprises the following raw and auxiliary materials: a cephalosporin ester drug with the bulk density of 0.1-0.3g/ml, and the following auxiliary materials accounting for the mass percentage of the cephalosporin ester drug as follows: 2-4.5% of micropowder silica gel, 2-4.5% of anti-gel adjuvant, and 12-16% of disintegrating agent, wherein the anti-gel adjuvant is a glidant and/or a lubricant with the bulk density greater than 0.50g/ml. According to the cephalosporin ester drug particle in the non-gel state after meeting the water, and the preparation method and the application of the drug particle, the problem that the dissolution rate is relatively low due to the fact that gelatinization is severe when the cephalosporin ester drug is dissolved out in the water in the prior art is solved, the dispersity and the hydrophilicity in a dissolution-out process are good, no gelatinization exists, and the dissolution rate is increased greatly.