193 results about "Phenolphtaleine" patented technology

The invention discloses bifidobacterium bifidum capable of remarkably relieving constipation and application thereof and belongs to the technical field of microorganisms. The bifidobacterium bifidum CGMCC NO.13632 can well tolerate simulative gastrointestinal fluid, can be well attached to colon cancer cells HT-29, and can remarkably increase the water content of excrement of constipation mice and shorten the first tarry stool time. On the aspect of increasing the small intestine driving rate, the bifidobacterium bifidum CGMCC NO.13632 is superior to cathartic phenolphthalein, a best effect is shown, secretion of gastrointestinal regulatory peptide relevant to constipation in serum is also adjusted while constipation pathological factors are remarkably improved, and the bifidobacterium bifidum does not have toxic and side effects of medicine for treating constipation, and is a first choice for preventing and treating constipation. The bifidobacterium bifidum CGMCC NO.13632 is used for preparing pharmaceutical compositions and fermented food for relieving constipation, and has very wide application prospects.

The invention relates to a new fluorine polyaryletheretherketone soluble high-performance material, process for preparation and the blend film material formed by the epoxide resin. The process for preparation comprises the following procedures: regarding 4,4'- difluorobenzophenone or 4,4'-difluorotribenzodiketone and mixing bisphenol monomer as the material; controlling the proportion of bisphenol hexaflurate A ( or trifluoromethyl phenyl eldopaque) and bisphenol A ( or fenolftaleina) in the segment of polymer via the way of nucleophilic substitution reaction; getting the new fluorine polyaryletheretherketone soluble high-performance material; furthermore, selecting the immobilized liquid epoxide resin and the functional polymer blend film prepared by the new fluorine polyaryletheretherketone soluble high-performance material in order to achieve the functionalization of polyaryletheretherketone material for meeting the aim of the different applying range and extending the processing window. The blend film material is suitable for high-performance composite material resin base field, microelectronic insulating material field, optical waveguide device field and air permoselective membrane field and the like.

The invention discloses a supramolecular structure phenolphtalein or its analog-inserted UV blocking material and a preparation method thereof. The preparation method comprises that nitrate-inserted magnesium-aluminum hydrotalcite is used as a precursor, and phenolphtalein or its analog is inserted between layers of the nitrate-inserted magnesium-aluminum hydrotalcite precursor by an ion exchange method so that the phenolphtalein or its analog-inserted magnesium-aluminum hydrotalcite with a good crystal structure and excellent performances is assembled. The supramolecular structure phenolphtalein or its analog-inserted UV blocking material has a 220-400nm band UV blocking rate higher than 95%, has excellent UV blocking performances, widens a UV blocking agent use range, can be used as additives of polymers such as asphalt, plastic and rubber, greatly improves UV-caused ageing resistance and prolongs a service life.

The invention relates to a quick screening method of phenolphthalein doped in Chinese patent medicine, health-care products and food for losing weight. The quick screen method comprises the followingsteps: (1) preparing sodium hydroxide solution with the concentration of 0.47mol/L to 0.53mol/L; (2) dissolving a sample by ethanol solution with the volume concentration of 90% to 96%, filtering andtaking filtrate; and (3) dropping 2 to 5 drops of filtrate into the sodium hydroxide solution and judging whether the phenolphthalein is added to the sample or not according to the change of colors. The invention also discloses a special reagent kit for implementing the screening method, comprising the ethanol solution with the volume concentration of 90% to 96% and the sodium hydroxide solution with the concentration of 0.47mol/L to 0.53mol/L. The detecting method is suitable for quickly screening whether the phenolphthalein is doped in the Chinese patent medicine, the health-care products and the food or not on site for basic medicine supervision personnel and has the advantages of low cost, simple operation, high sensitivity and the like.

The invention discloses a method for determining content of p-toluenesulfonic acid in a butyl acrylate reaction kettle. The method for determining the content of p-toluenesulfonic acid in the butyl acrylate reaction kettle comprises the following steps: adding absolute alcohol and a phenolphthalein indicator into a triangular flask, titrating to be reddish with a sodium hydroxide solution, accurately weighing a certain quantity of samples into the triangular flask, titrating to be reddish with a sodium hydroxide standard solution, and recording volume consumed at the moment; correcting acrylic acid by virtue of an external standard method by adopting an automatic sampling gas chromatograph, accurately determining mass percentage of acrylic acid in the samples, and carrying out reverse calculation to obtain volume of sodium hydroxide consumed by acrylic acid according to an acrylic acid calculation formula; subtracting to obtain volume of sodium hydroxide consumed by p-toluenesulfonic acid, and obtaining mass percentage of p-toluenesulfonic acid according to a p-toluenesulfonic acid calculation formula. The method disclosed by the invention has the advantages that the content of p-toluenesulfonic acid in the butyl acrylate reaction kettle can be accurately determined, and a great effect on stably controlling the content of a reaction kettle catalyst is realized.

The invention discloses a modified nano cobalt ferrite/arylene ether nitrile dielectric composite material which comprises arylene ether nitrile as a substrate and modified nano cobalt ferrite as packing, wherein the modified nano cobalt ferrite is of a core-shell structure with nano cobalt ferrite as a core and a high polymer or a decomposition substance of a modifier as a shell. The invention further discloses a preparation process of the modified nano cobalt ferrite/arylene ether nitrile dielectric composite material. The process comprises the following steps: putting modified nano cobalt ferrite into DMSO (Dimethylsulfoxide), adding phenolphthalein, 2,6-dichlorobenzene nitrile, anhydrous K2CO3 and methylbenzene to carry out a reaction, carrying out dilution, precipitation, purificationand drying, and carrying out hot-pressing molding, thereby obtaining a product. Due to the core-shell structure of the dielectric composite material, the compatibility of the modified nano cobalt ferrite and the arylene ether nitrile is improved, so that the dielectric constant of the material is increased; by adopting the method disclosed by the invention, the dispersibility of the modified nanocobalt ferrite in the arylene ether nitrile is improved, so that the dielectric constant of the material is further increased, and meanwhile the mechanical properties of the material are improved.

The invention discloses wear-resisting modified polyimide composite. The modified polyimide composite comprises raw materials in percentage by mass as follows: 78%-89% of phenolphthalein type polyimide, 10%-20% of polytetrafluoroethylene, 0.01%-1% of an antioxidant and 0.01%-1% of other aids, wherein the structure formula of phenolphthalein type polyimide is shown in the formula (I), n is a positive integer, and Ar is an aromatic group with the carbon number ranging from 6 to 30. According to the wear-resisting modified polyimide composite provided by the invention, phenolphthalein type polyimide with a special structure is taken as a raw material, and polytetrafluoroethylene is used for modifying phenolphthalein type polyimide, so that the prepared composite has a smaller friction coefficient and wear rate and also has better mechanical strength and excellent heat resistance.

The invention provides a method for preparing a test paper for quickly detecting phenothalin, a detection kit and a detection method. The test paper is prepared by soaking neutral filter paper in alkaline solution at a pH value of 11 to 12, taking the filter paper out and drying the filter paper. The alkaline solution may be solution of NaOH, Na2CO3 or KOH. The test paper prepared by the method is assembled with ethanol solution to form the detection kit. The method for detecting phenothalin by using the test paper for detection comprises: adding a test product in the ethanol solution, shaking the ethanol solution and standing the ethanol solution; soaking the test paper for detection in the processed solution of the test product; and taking the test paper for detection out of the solution, wherein if the test paper shows a rose color, that the test product contains phenothalin can be determined, and if the test paper does not show a rose color, that the test product does not contain phenothalin can be determined. The test paper, the related kit and the method for quickly detecting phenothalin can quickly and accurately detect phenothalin, particularly can detect whether phenothalin is illegally added in weight-reducing Chinese patent medicaments, health-care foods and other foods in situ, are simple and convenient in operation, suitable for in-situ detection and can realize semi-quantitative detection.

The invention discloses an LiOH (lithium hydroxide) and Li2CO2 content measurement method in high-nickel ternary materials. The method includes the steps of 1), adding the high-nickel ternary materials into 5-10 mass times of ethyl alcohol, stirring under vacuum for 20-30 minutes, filtering after standing, and performing cool drying; 2), adding the high-nickel ternary materials subjected to cool drying to 5-10 times of deionized water, performing ultrasonic dispersion and taking supernatant liquid after filtration; 3), adding an indicator of 2-3 drops of phenolphthalein, performing titration with hydrochloric acid, terminating titration when solution color turns from red to colorless, and calculating the content of LiOH according to the amount of the hydrochloric acid consumed; 4), continuously adding the indicator of methyl red in the solution, performing titration by using hydrochloric acid, terminating titration when the solution color turns from yellow to red, and calculating the content of Li2CO according to the amount of the hydrochloric acid consumed. The method is simple in step, low in requirement on equipment and high in operability result accuracy.

The invention provides a continuous fiber reinforced phenolphthalein polyaryletherketone composite prepreg tape and a preparation method thereof, and belongs to the technical field of polymer composite materials. The method comprises the following steps: dissolving phenolphthalein polyaryletherketone resin into an organic solvent to prepare a resin solution with a mass concentration of 15%-35%, dipping the continuous carbon fiber into a resin solution, and replacing the solvent by coagulating bath, heating a prepreg tape by a hot drying channel at 200DEG C-380DEG C for 30min-60min to rapidly melt the resin, compacting the prepreg tape by a hot pressing roller at 330-380DEG C under a pressure of 2-20MPa, and then conducting cooling and cutting to obtain the prepreg tape. The composite prepreg tape provided by the invention is suitable for molding large-size parts, can be used for preparing composite material parts with high fibrous body content, and has excellent mechanical properties and thermal properties.

The invention discloses a color-changing coating and a preparation system and preparation method thereof. The color-changing coating is composed of the following components in parts by weight: octyldodecanedioate phthalate, tribasic lead sulfate, polyaluminium chloride, barium carbonate, propylene glycol phenyl ether, water, a thickener and a discoloring agent according to a ratio of (10-20): (1-3): (2-5): (5-8): (7-12): (30-90): (3-5): (2-5), the thickener is composed of cyclohexane, polyvinyl alcohol, hydroxyethyl cellulose and esterified pectin liquid, and the discoloring agent is composedof methyl methacrylate, zinc phosphate, methyl violet and phenolphthalein. The method comprises the following steps: 1, respectively adding the raw material components of the thickener and the raw material components of the color-changing agent into two movable stirring pipes, and adding the rest raw material components into a stirring cavity, 2, stirring the raw materials, 3, enabling the mixtureto flow into a stirring cavity, and continuously mixing and stirring with the raw materials in the stirring cavity, and 4, completely stirring all the raw materials in a stirring cavity formed by a stirring rectangular pipe and a stirring semicircular cylinder, so that a coating is obtained, discharging the coating through a discharging pipe, and collecting it.

The invention provides a reverse osmosis membrane, a reverse osmosis membrane preparation method, the reverse osmosis membrane prepared by the preparation method, and the reverse osmosis membrane application in the field of water treatment. The reverse osmosis membrane includes a support layer, a phenolphthalein sulfonated poly aryl ether sulfone layer and a hydrophilic polymer layer which are sequentially layered, the phenolphthalein sulfonated poly aryl ether sulfone layer comprises phenolphthalein sulfonated poly aryl ether sulfone with a structure shown as formula (I), the phenolphthalein sulfonated poly aryl ether sulfone layerand the hydrophilic polymer layer are different in composition, R1 to R15 are H or C1-C5 alkyls, and n is greater than or equal to 2. The reverse osmosis membrane provided by the invention has excellent chlorine resistance, and high water flux and desalination rate. The formula (I) is shown in the specification.

The invention relates to a device and method for automatically measuring ions in water by adopting a color sensor. The device comprises a measuring cell, a stirrer arranged in the measuring cell, a standard hydrochloric acid solution supply mechanism, a phenolphthalein solution supply mechanism and a methyl orange solution supply mechanism, wherein the standard hydrochloric acid solution supply mechanism, the phenolphthalein solution supply mechanism and the methyl orange solution supply mechanism are communicated with the measuring cell. A color sensor is arranged in the measuring cell and connected with a control system through a signal panel. According to the patent, the color sensor is adopted to identify the color mutation end point, automatic titration and measurement are carried out, manual titration and manual judgment of the end point are completely replaced, related standards and methods are completely met, and the contents of carbonate, bicarbonate and hydroxide in water canbe accurately measured in real time.

The invention provides a method for determining the content of residual sodium n-alkyl benzene sulfonate in beer, which relates to the technical field of beer quality safety detection. The invention discloses a method for determining the content of residual sodium linear alkyl benzene sulfonate in beer. The test method comprises the following materials and reagents: a plurality of parts of bottled beer of different brands, a bottle washing additive, sodium hydroxide, sulfuric acid, chloroform, a sodium n-alkyl benzene sulfonate standard solution, methylene blue, phenolphthalein, ammonium acetate, malachite green, disodium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, diazaphenanthrene, sodium dodecyl benzene sulfonate, methanol, hydroxylamine hydrochloride and an anionic surfactant solution standard substance. The quality safety of the beer can be effectively ensured by determining the content of the residual sodium n-alkyl benzene sulfonate in the beer.

The invention provides a preparation method of a super-hydrophilic composite membrane suitable for oil-water separation in a severe environment, and the preparation method comprises the following steps: S1, mixing dichlorobenzonitrile, bisphenol A, phenolphthalein and N-methyl pyrrolidone, and carrying out dehydration azeotropy and copolymerization at a high temperature; cooling, precipitating in a precipitating agent, separating, adding diluted hydrochloric acid for acidification, and drying to obtain a PEN-COOH product; S2, preparing a membrane casting solution from the PEN-COOH product obtained in the S1, a pore-forming agent and an organic solvent, pouring the membrane casting solution on a non-woven fabric, and obtaining a PEN-COOH base membrane with a groove rough structure by using a non-solvent phase inversion method; and S3, adding dopamine, polyethyleneimine and titanium dioxide to the PEN-COOH base membrane obtained in the S2, and obtaining the PEN-COOH/TiO2 composite membrane through a bionic one-step cross-linking soaking method. The invention further provides the super-hydrophilic composite membrane suitable for oil-water separation in the severe environment, and the super-hydrophilic composite membrane still has a good oil-water separation effect in a high-temperature, strong-acid and strong-alkali environment and is long in service life.

The invention discloses a preparation method of a water-soluble polyarylether sizing agent and an application thereof; which belong to the technical field of high-performance fiber sizing agents. The preparation method comprises the following steps: mixing phenolphthalein, potassium p-hydroxybenzenesulfonate, 2, 6-dichlorobenzonitrile and potassium carbonate, carrying out temperature programming reaction in a mixed solvent to obtain a polyarylether reaction solution, mixing the polyarylether reaction solution with absolute ethyl alcohol, fully soaking, crushing, heating and washing with absolute ethyl alcohol, and carrying out vacuum drying to obtain polyarylether small molecules; and dissolving in an acetic acid aqueous solution to obtain the water-soluble polyarylether sizing agent. The sizing agent prepared by the invention has the characteristics of good film-forming property, strong adhesive force and outstanding temperature resistance, can solve the problems that the existing high-performance fiber surface sizing agent is easy to decompose at high temperature and is weak in interface bonding and bonding acting force with a thermoplastic resin matrix, improves the comprehensive performance of a fiber reinforced resin matrix composite material, and expands the application field and range of the reinforced resin-based composite material.

The invention belongs to the field of constructional engineering and relates to an indicator for determining alkalinity of the finished product of cement and application thereof. The indicator is prepared and finished by the following steps of: (1) dissolving phenolphthalein into 60% ethanol according to the massic volume ratio of 1:1000; (2) dissolving thymolphthalein into 90% ethanol according to the massic volume ratio of 1:100; (3) dissolving alizarin red into 90% ethanol according to the massic volume ratio of 4:1000; (4) dissolving titan yellow into 90% ethanol according to the massic volume ratio of 3:1000; and (5) fully mixing the solution of the same volume obtained in the previous four steps, so as to prepare the indicator for determining the alkalinity of the finished product of the cement. The indicator has the advantages of simpleness in raw material, extremely low cost, convenience and practicability.

The invention discloses an alpha-naphtholphthalein derivative multifunctional fluorescent probe as well as a preparation method and application thereof. The structural formula of the fluorescent probe is shown as a formula (I) in the description. A compound shown in a formula (II) is synthesized from a compound shown in the formula (III), and then the fluorescent probe is synthesized. The fluorescent probe can identify and detect Hg < 2 + > and Al < 3 + > in a mixed solution of dimethyl sulfoxide and water by using a fluorescence spectrum and/or an ultraviolet-visible absorption spectrum. The fluorescent probe has high selectivity and sensitivity for identifying Hg < 2 + > and Al < 3 + >, is strong in anti-interference capability and has very low detection limit; and the fluorescent probe can be used for qualitative and quantitative detection of Hg < 2 + > and Al < 3 + > and tracing imaging detection of Hg < 2 + > and Al < 3 + > in living cells.

The invention relates to the technical field of water treatment membrane separation, and discloses a composite reverse osmosis membrane and a preparation method thereof. The composite reverse osmosis membrane comprises a supporting layer, a base membrane layer and a functional layer, the base membrane layer is arranged between the supporting layer and the functional layer, the supporting layer is polyester non-woven fabric, wherein the base membrane layer is polyaryletherketone containing phenolphthalein side group, and the functional layer is polyamide. The composite reverse osmosis membrane can keep high water flux and desalination rate at room temperature and after high-temperature treatment, and has good high-temperature resistance.

The invention provides a phenolphthalein modified polyaryletherketone water-based sizing agent as well as a preparation method and application thereof. The sizing agent is prepared from the following components in percentage by mass: 0.5 to 3 parts of phenolphthalein modified polyaryletherketone resin, 0.2 to 5 parts of a surfactant, 0.1 to 1 part of a flatting agent, 0.1 to 1 part of a lubricating agent, 0.1 to 1 part of a de-foaming agent, 0.1 to 2 parts of an adhesive, 0.2 to 1 part of an antistatic agent and 86 to 98.7 parts of de-ionized water. According to the principle of 'like dissolves like',the main slurry of the sizing agent provided by the invention is polyaryletherketone resin containing a distorted non-coplanar phenolphthalein structural unit with a carboxyl functional side group, so that excellent compatibility of the sizing agent and polyaryletherketone matrix resin can be ensured, and the sizing agent also has relatively good thermal stability. The water-based sizing agent is prepared through an emulsion solvent evaporation method, interface adhesion can be enhanced through diffusion and physical entanglement effects between the sizing agent and the matrix resin; and carboxyl contained in phenolphthalein can further form hydrogen bonds with ketone groups in the matrix resin, and interface adhesion between the sizing agent and the matrix resin is further improved.

A resist composition comprising a 2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane, biguanide or phosphazene salt of tetraiodophenolphthalein, tetraiodophenolsulfonphthalein or tetraiodofluorescein exhibits a sensitizing effect and an acid diffusion suppressing effect and forms a pattern having improved resolution, LWR and CDU.

The invention relates to a rapid titrating method for detecting the acidity of glyceryl triacetate. The method comprises the following steps of 1, preparing a 10g/L phenolphthalein indicator according to GB/T603; preparing a 0.02mol/L sodium hydroxide standard titration solution according to GB/T601; 2, placing 50mL anhydrous ethanol into a 250mL conical flask, adding three drops of phenolphthalein indicator and shaking up; adding a 0.02mol/L NaOH solution by adopting an electric continuous liquid dispenser, wherein 0.06mL of NaOH solution is added every time until the solution just turns pink; 3, adding 40g of sample into the conical flask, shaking up, adding the 0.02mol/L NaOH solution by utilizing the electric continuous liquid dispenser, wherein 0.13mL of NaOH solution is added every time until the solution turns pink like that in the previous step, determining the end point when the solution does not fade after maintaining for 10s, and recording the liquid adding times n; and 4, directly obtaining the acidity of the glyceryl triacetate according to a conversion table of the liquid adding times and the acidity through the liquid adding times n. The method has the advantages of simplicity and convenience in operation and accuracy, visualization and high efficiency in determination.

The invention discloses a rapid detection method of phenolphthalein in weight reducing health foods, and a detection card developing method. The rapid detection method comprises the following steps: immersing a sample to be detected in an extract liquid A, extract agent B and extract product C composition according to the type of the sample to be detected, oscillating, and standing to extract phenolphthalein; taking the obtained immersion solution, and filtering the immersion solution through a micro-porous filter membrane; taking the obtained filtered solution to be detected, adding the filtered solution to be detected to a phenolphthalein detection card in a dropwise manner, observing the change of the color of test paper, preliminarily determining that the sample contains phenolphthalein if the test paper is pink, and comparing the color with a standard color gradation spectrum to realize qualitative analysis; and using a hand-held gold marking color developing instrument to carry out quantitative detection. The detection card developing method includes the following steps: preparing a test paper substrate, preparing a color developing solution, immersing the substrate, preparing detection test paper, and preparing a detection card. The detection method is suitable for onsite rapid detection of the chemical component phenolphthalein in the weight reducing health foods, and has the advantages of low false detection and missing detection rate, realization of quantitative detection, and low requirements for testing personnel.