66results about How to "Excellent solubility properties" patented technology

Blocked mercaptosilanes can be manufactured by reacting mercaptosilanes with organic or inorganic halides or anhydrides in the presence of an acid acceptor and washing the resulting reaction product with water/brine to yield two immiscible phases: an organic phase containing blocked mercaptosilane product and an aqueous phase containing the salt of the acid acceptor. Recycle of the acid acceptor is achieved by adding base to the aqueous phase. The process is suitable to be run in either batch or continuous mode. The blocked mercaptosilane compounds are used as coupling agents in rubber mixtures.

A polymer comprising repeat units of the formula:

wherein R¹ is independently in each occurrence C_1-20 hydrocarbyl or C1-20 hydrocarbyl containing one or more heteroatoms of S, N, O, P or Si or both R¹ may form, with the 9-carbon of the fluorene ring, a C_5-20 ring structure containing one or more heteroatoms of S, N, or O; R² is independently in each occurrence C_1-20 hydrocarbyl, C_1-20 hydrocarbyloxy, C_1-20 thioether, C_1-20 hydrocarbyloxycarbonyl, hydrocarbylcarbonyloxy, or cyano; a is independently in each occurrence a number from about 0 to about 1;

• m is a number from about 1 to about 2; and
• n is a number from about 3 or greater.

The present invention provides a method of continuous precipitation and isolation of an amorphous solid particulate form of 3-[2-(3-tert-Butyl-ureido)-3,3-dimethyl-butyryl]-6,6-dimethyl-3-aza-bicyclo[3.1.0]hexane-2-carboxylic acid (2-carbamoyl-1-cyclobutylmethyl-2-oxo-ethyl)-amide having controlled physical properties. The present invention provides also pharmaceutical formulations comprising the precipitated compound.

A resist film made of a chemically amplified resist is formed on a substrate. Subsequently, a barrier film for preventing a component of the resist film from eluting into an immersion liquid or preventing the immersion liquid from permeating into the resist film is formed on the resist film. Thereafter, with an immersion liquid provided on the barrier film, pattern exposure is carried out by selectively irradiating the resist film with exposing light through the barrier film. Then, after removing the barrier film, the resist film having been subjected to the pattern exposure is developed, so as to form a resist pattern made of the resist film.

The invention relates to a preparation method for a hyperbranched polymide film with the low dielectric constant. A series of the low-dielectric constant PI films with a hyperbranched structure are synthesized by taking 2,4,6-triaminopyrimidine (TAP) as a branching center through a one-step method. Through introduction of the hyperbranched structure, the dielectric constant of the PI film is significantly lowered, the inherent advantages of PI are better kept, and the good mechanical strength and thermo-oxidative stability are supplied to the film. The hyperbranched structure contains a large quantity of molecular chain end groups, dense packing of molecular chains is effectively inhibited, and therefore the hyperbranched PI film has the excellent dissolution characteristic to be more prone to be processed into a complex device. Compared with a Kapton standard film which is generally used at present, under the same testing conditions, the dielectric constant of the hyperbranched PI film prepared through the method is lowered by 20%-40%, the lowest dielectric constant even gets close to 2.0 and reaches the ultralow dielectric constant level, and the urgent demand for micro-electronic industry development in future can be met.

The invention relates to a method for preparing nanometer structures on an insulating substrate. The method comprises the following steps of: selecting and disposing the insulating substrate; spin-coating electronic anti-corrosion adhesive after an aluminium film with suitable thickness is aggraded on the substrate by coating equipment; designing the shape and the dimension of the required surface nanometer structure according to the requirement; realizing the precise exposal of the design graphics on the surface of the substrate in an electron beam exposal system; realizing suitable undercut structure at the exposal line position in a dual-layer structure of electronic anti-corrosion adhesive and aluminium by controlling the process parameters such as temperature of alkali liquor, consistency of alkali liquor and corrosion disposal time; finally realizing the sediment of nanometer structure material by the coating equipment and completing the preparation of the nanometer structure by solubilisation process and alkali liquor disposal. The method overcomes the charge accumulation effect of the insulating substrate in the electron beam exposal system and realizes the exposal of the nanometer graphics; meanwhile, the prepared undercut structure can extremely effectively assist the subsequent solubilisation process, thus ensuring that the surface nanometer structure is effectively, integrally and precisely realized on the insulating substrate material.

The invention provides a method for producing instant kudzu vine root powder through direct enzymolysis of kudzu vine root raw materials by the adoption of compound enzymes. The method comprises the following steps that firstly, fresh kudzu vine roots are washed, cut and dried at the temperature of 54 DEG C-56 DEG C until the moisture content is 5%-6%, the dried kudzu vine roots are smashed and screened with a 110-120-mesh sieve, and therefore kudzu vine root large-size powder is obtained, wherein the thickness of the cut kudzu vine roots is 3-6 mm; secondly, the kudzu vine root large-size powder is processed through cellulose and pullulanase simultaneously, wherein the dosage of the pullulanase is 17-19U/(g kudzu vine root large-size powder), the dosage of the cellulose is 1.18*104-1.22*104 U/(g kudzu vine root large-size powder), the substrate concentration is 14-16%, the enzymolysis time is 2.8-3.0 hours, the enzymolysis temperature is 54-56 DEG C; thirdly, the kudzu vine root large-size powder is placed in a boiling water bath for inactivation for 5 min after enzymolysis, and when the temperature of enzymatic hydrolysate is lowered to the enzymolysis temperature, centrifugation is conducted on the enzymatic hydrolysate at 3400-3500 rpm for 15-16 min; fourthly supernatant is collected, concentration, cooling and drying are conducted on the collected supernatant, and therefore the instant kudzu vine root powder is obtained. The method for producing the instant kudzu vine root powder through direct enzymolysis of the kudzu vine root raw materials by the adoption of the compound enzymes is simple in technology, moderate in reaction condition and high in product yield, the instant kudzu vine root powder is good in solubility, and the flavone reservation rate is high.

The invention discloses a synthetic method of polylactic acid-polyethylene glycol, which utilizes L-lactic acid and polyethylene glycol as raw materials to synthesize the polylactic acid-polyethylene glycol in a polymerization mode, and utilizes ionic liquid as a catalytic agent. Due to the fact that the ionic liquid has good dissolving characteristics to product polymerization, the polymerization reaction is performed under conditions of the homogeneous reaction, good catalysis is obtained, the reaction rate is fast, and a product with high molecular weight can be obtained within 6-10 hours. Matter in the ionic liquid is dissoluble and can be dissolved in the solvent in the final settlement of the product, so that the product is free of residues, and residual poisons do not need to be considered in the prepared product. The preparation of the ionic liquid can perform screening according to reaction products of the polymerization, good crystal products can be obtained, degradation of the product can be facilitated, the degradation period is short, and the degradation is complete.

The invention discloses a method for preparing CdSexS1-x ternary alloy quantum dots in ole-morpholine. The method is characterized in that: a precursor solution containing Cd and a precursor solution containing Se and S are respectively prepared with ole-morpholine as solvents; the two precursor solutions are mixed under a temperature of 110-130 DEG C; the mixture is heated to 220-250 DEG C with a heating speed of 10-15 DEG C/min, and is subject to a reaction for 1-3 hours; an obtained reaction liquid is injected into methanol, ethanol or propanol, such that a crude product is precipitated; the crude product is washed, processed through centrifugal separation, and is dissolved by using a non-polar organic solvent, such that CdSexS1-x is obtained, wherein 0<x<1. Therefore, a ternary alloy quantum dot solution is obtained. When the adopted molar ratio of Se/S is changed, quantum dots with different stoichiometric ratios can be prepared, wherein an emission spectrum is 450-646nm, and a half emission peak width is 32-48nm. The ternary alloy quantum dot synthesizing method provided by the invention is advantaged in simple operation and good repeatability. Also, the method is environment friendly, economic, and applicable.

Provided are a polymer electrolyte composition, an electrolyte membrane, a membrane electrolyte assembly, and a fuel cell. The polymer electrolyte composition according to an exemplary embodiment of this application includes a first solvent, a second solvent which is different from the first solvent, and a polymer which is reacted with the first solvent and the second solvent, in which the polymer includes a functional group which reacts with the first solvent by a first reaction energy and with the second solvent by a second reaction energy, and the second reaction energy is smaller than the first reaction energy.

The invention relates to a method for producing laver antihypertensive peptides. The method is that dry laver powder is selected as a raw material, is added with water and homogenized, the pH is regulated to 7.5, and alkaline protease is added at the temperature of 45-50 DEG C for enzymolysis for 5-7 hours; the alkaline protease is deactivated, and supernatant liquor is obtained through centrifugation; the supernatant liquor is filtered through an ultrafitration membrane which takes the molecular weight 2000 as the retention value, and filtrate is collected; and the filtrate is subjected to reduced-pressure condensation until the solid content is 45%-55%, and is subjected to freeze drying and grinding so as to obtain the laver antihypertensive peptides. The method for producing laver antihypertensive peptides is reasonable in technology, is simple to produce and has strong operability.

The present invention provides a freezer oil for R32 refrigerant that comprises (A) a citrate triester prepared from citric acid and a C2 to C10 aliphatic monohydric alcohol.

The invention relates to high-dissolvability acid yellow dye. The structural general formula [I] of the compound is shown in the specification. The preparation method mainly includes the steps that metanilic acid [I] reacts with sodium nitrite in inorganic acid media to obtain diazonium salt; then 2-dimethyl acetylsuccinate (for short, DMAS) is added into the diazonium salt, acid-binding agents are added for condensation until the diazonium salt disappears, and alkali is added to adjust the pH value until alkalescence is achieved; sulfanilic acid reacts with sodium nutrite in inorganic acid media to obtain diazonium salt, the diazonium salt is coupled with condensation liquid, alkali is added into coupling liquor, the mixture is heated for hydrolysis, and then spraying drying is performed to obtain the finished product. The high-dissolvability acid yellow dye has the advantages that a one-pot method is adopted, no wastewater is discharged in the method, and pollution to the environment will not be caused; the obtained acid yellow dye is excellent in dissolvability.

The invention provides a preparation method and application of high lubricated oxidized polyethylene wax, which comprises the following steps: by taking waxy low molecular weight polyethylene oligomer as a raw material, liquid carbon dioxide as a solvent and monobasic short-chain alcohol as a precipitator, reacting under the condition of reaction temperature, dissolving, concentrating, precipitating, separating and drying, thereby preparing low molecular weight polyethylene wax; the method comprises preparation of low molecular weight polyethylene wax and high lubricated oxidized polyethylene wax; and the high lubricated oxidized polyethylene wax has the advantages of good polarity, good compatibility, ideal lubricating and dispersing effects, small influence on the environment and the like, and has relatively high market economic value.

A method of agglomeration of ferroalloy fines such as ferromanganese, ferrochrome and ferrosilicon fines comprising the steps of: Providing ferroalloy fines below 10mm size; Sieving <3mm size fraction and crushing 3-10mm to produce <3mm fines; mixing the resulted fines with a phenol formaldehyde resol resin binder in a vessel; compacting the mixed fines in a compressive machine in batches to form agglomerates; curing the agglomerates on heating in a furnace maintained at a temperature range 150-200 DEG C for about 60 to 90 minutes.