35 results about "Nonvolatile acid" patented technology

The invention discloses an etching plaster for metal and metal oxide transparent conducting layers and an etching process, in the invention, lagging production processes, such as the use of organic solvents, strong acid etching and strong alkaline cleaning and the like, are not used any longer, instead, the etching plaster and the etching process which do not pollute the environment are used. The etching plaster comprises the following components in parts by weight: 0.1-20 parts of salt substance, 2-50 parts of non-volatile acid, 10-30 parts of aqueous high molecular polymer, 0.1-10 parts of dilute wetting dispersant, 0.1-5 parts of defoamer, 10-40 parts of thickening agent, 0.1-10 parts of bacteriostat and 2-30 parts of water. The invention simplifies the process flow, cancels acid and alkali soaking and the use of organic solvents, lowers the environmental protection cost, improves the etching quality of products, and has the effects of high efficiency, energy saving and environmental protection. The invention is widely applied to the fields of electron, semiconductors, fine chemistry industry and the like.

The invention discloses a method for preparing carbon nanotubes or nano-rods by the hydrothermal method. The method includes the following steps: (1) dissolving sucrose or glucose into nonvolatile acid aqueous solution, and intensively mixing; and (2) transferring the solution prepared in step (1) into a hydrothermal reaction kettle and carrying out hydrothermal reaction at 100-240 DEG C for 2-24 hours, naturally cooling to room temperature, separating, washing, and drying to obtain carbon nanotubes or nano-rods. The method has the advantages of mild reaction conditions and simple process. The prepared carbon nanotubes or nano-rods are not wound but very straight and have good dispersity and repeatability, which can be used as chemical reaction material and catalyst carrier, with wide application prospect in electrochemical energy storage and microelectronics aspects.

The invention provides a metal, metal oxide etching ink, a preparation method and the application thereof. The ink is prepared by non-volatile acid, water-soluble polymer, ink auxiliary agent and de-ionized water. The invention can be applied to etching metal or metal oxide such as metallic nickel, magnesium, stainless steel, tin indium oxide compound and the like by technologies such as screen painting, offset printing and planographic printing. Therefore, the invention has simple technique, convenient use, complete etch, neat lines, no lateral erosion phenomenon, and environment-friendly and economical material and process flow, so as to be widely applied to the electronics industry, finishing material and semiconductor industry.

The invention discloses bacillus coagulans and an application thereof. The bacillus coagulans is preserved in China General Microbiological Culture Collection Center on May 13, 2019, and has the preservation number of CGMCC NO.17801. The invention also discloses a brewing method of table vinegar. The strain is resistant to 8% (v / v) acetic acid, has a wide range of growth temperature (30-55 DEG C),produces acetic acid and highly produces lactic acid, not only can adapt to an acetic acid fermentation harsh environment which is difficult for ordinary microorganisms to grow, but also has low requirements for oxygen, and can grow under both aerobic and anaerobic conditions. Through the use of the strain, the strain can improve the problem of reduction of the content of nonvolatile acid causedby seasonal changes, bacterial degradation and other problems, can significantly improve the content of nonvolatile acid in table vinegar, improves the flavor of the product, improves the quality of the product, and improves the yield of the product to a certain extent.

The invention discloses bacillus siamensis and application thereof in acetoin-rich table vinegar, bacillus siamensis QH-20009 can grow and metabolize under an acidic condition and produce amylase, granular amylase, pullulanase and protease at the same time, is applied to the field of food, and can remarkably improve the starch utilization rate and the nonvolatile acid content of a table vinegar brewing raw material, so that the yield of the vinegar is increased, and the production cost is reduced. The problem that the raw material utilization rate is not high in the vinegar brewing process can be solved, full utilization of grains is guaranteed, the amino acid content in the vinegar is increased, carbohydrates can be metabolized to produce acetoin, the acetoin content in the brewed vinegar can be increased, the flavor of the brewed vinegar can be improved, and the vinegar product quality can be improved.

The present invention provides an imageable composition, which includes a bottom layer including a first strong, non-volatile acid having a pKa of not more than about 8 and coated thereon a top layer including an acid curable composition, an acid generator, an infrared absorber and optionally a colorant. The present invention further provides an imageable element, which includes a substrate and an imageable composition according to the present invention coated on a surface of the substrate. Also provided is method of producing an imaged element according to the present invention.

The invention provides a dimethicone preparation method. The method comprises the following steps: pretreating hydroxyl terminated polydimethyl siloxane; evenly mixing the pretreated hydroxyl terminated polydimethyl siloxane with trimethyl chlorosilane and stirring, compressing and reacting for 1 to 8 h under 50 to 100 DEG C; releasing pressure and removing trimethyl chlorosilane and hydrogen chloride to obtain dimethicone. The raw materials of the dimethicone preparation method disclosed by the invention are easy to obtain, the preparation method is simple, the preparation conditions are moderate and easy to achieve, no additive such as a catalyst is added into, no impurity of metal ions, non-volatile acid and the like is introduced into, and the purity of a target product is high; furthermore, aftertreatment is simple, no wastewater or waste salt is generated, and environmental friendliness are achieved; in addition, reaction is complete, trimethyl silane termination is utilized, theyield of the target product is higher, the hydroxyl content is low, and no other miscellaneous element is introduced into.

The invention discloses blending edible vinegar, which is prepared by the following steps of: mixing 60 to 70 weight percent of white vinegar, 5 to 15 weight percent of summer vinegar, 10 to 15 weight percent of five-year aged vinegar and 15 to 25 weight percent of fully smoked vinegar; and decocting the vinegar at high temperature of between 80 and 90DEG C. The prepared blending edible vinegar has mild and sweet mouthfeel, rich aromatic components, high functional hygiene factor content, a ratio of total acid to reducing sugar of about 7:3, a ratio of volatile acid to nonvolatile acid of about 6:4, the ligustrazine concentration of more than or equal to 50mg / L and the general flavones concentration of more than or equal to 70mg / 100mL. Substances influencing flavor and functional factors in the edible vinegar are systematically and quantitatively coordinated, problems of unstable quality, difference in different batches and the like in the conventional edible vinegar brewing are improved, and the edible vinegar with typical flavor and functions, which ensures that sensorial taste and instrument analysis results meet the expected design requirement, is prepared, so that high quality edible vinegar is produced.

The invention discloses a vinegar brewing method which comprises the following steps: weighing sticky rice in a needed amount to be ground, adding water to form raw material mash, adding amylase intothe mash, and controlling the temperature until liquidation is completed; reducing the temperature to 25-30 DEG C, adding a proper amount of barley Daqu, maintaining the temperature for 3-4 hours, andthen cooling; adding yeast liquid, adding bran, performing alcoholic fermentation at the temperature of 30 DEG C, and taking the upper mash for later use; and finally, adding a proper amount of acetic acid to serve as an initial base acid for fermentation, adding the mash into a tank, controlling the temperature to be 30 DEG C, starting to introduce air, and adding a proper amount of acetic acidbacteria seed solution, thereby obtaining the vinegar when the alcoholic strength reaches 0.5% or less. The method is high in production efficiency and short in production cycle, and the prepared vinegar is full-flavored, so that the content of nonvolatile acid in the vinegar is increased, and the flavor of the vinegar is improved. The vinegar prepared by the method disclosed by the invention hasthe total acidity of more than or equal to 6g / 100ml and the nonvolatile acid content of more than or equal to 0.5g / 100ml, and the requirement of the national standard on the nonvolatile acid content is met.

A catalytic process for dehydration of an aliphatic C2-C6 alcohol to its corresponding olefin is disclosed. The process continuously flows through a reaction zone a liquid phase containing an aliphatic C2-C6 alcohol to contact a non-volatile acid catalyst at a reaction temperature and pressure to at least partially convert the aliphatic C2-C6 alcohol in the liquid phase to its corresponding olefin. The reaction pressure is greater than atmospheric pressure and the reaction temperature is above the boiling point of the olefin at reaction pressure, but below the critical temperature of the alcohol, and the olefin product is substantially in the gaseous phase. After the contacting step, the olefin containing gaseous phase is separated from the liquid phase. The invention also relates to catalytic processes such as a hydrolysis of an olefin to an alcohol, an esterification, a transesterification, a polymerization, an aldol condensation or an ester hydrolysis.

The invention discloses a method for determining acetic acid content in a biomass preprocessing fluid, and relates to the detection of acetic acid content. The method comprises the following steps: adding a non-volatile acid solution to a biomass preprocessing fluid so as to obtain a to-be-detected solution, wherein hydrogen ion concentration of the to-be-detected solution is 10-4mol / L-5.0mol / L; respectively adding the to-be-detected solution and multiple acetic acid standard solutions differing in concentration to different upper-space bottles and sealing to obtain to-be-detected upper-space bottles, wherein the volume of solutions in the to-be-detected upper-space bottles is no more than 0.55mL / mL of the capacity of each upper-space bottle; transferring the acetic acid to a gas chromatograph by virtue of an all-volatile upper-space gas chromatography technology so as to detect a gas chromatography signal value of the acetic acid; and finally, calculating the acetic acid content in the biomass preprocessing fluid. The method for determining the acetic acid content in the biomass preprocessing fluid, disclosed by the invention, has the advantages of being simple and rapid in sample making, high in determination accuracy, good in repeatability and the like, and is widely applied to the detection of the acetic acid content in the biomass preprocessing fluid.

The invention discloses a method for inducing pure female industrial cannabissativaL. The method comprises the following steps of S1, preparing isopropylidene aminooxyacetic acid and nonvolatile acidwhich are required for induction, and preparing a spraying container; S2, treating the isopropylidene aminooxyacetic acid and the nonvolatile acid, obtaining end products, and treating the end products to obtain a mixture A; S3, spraying the mixture A to the industrial cannabissativaL. plants at the squaring period through the spraying container, and after spraying, performing standing for a reaction for 3-5 days; S4, spraying the plants with the mixture A for the second time, and after spraying, performing standing for 10 days; and S5, after spraying, removing male buds of the cannabissativaL. plants, so that the remaining female buds can generate male buds, and the cannabissativaL. is monoecism. The method is simple and easy to operate, the labor force is reduced, the working period forremoving male buds is shortened, and besides, pollution to water sources and environment can be reduced. The efficiency for obtaining cannabissativaL. pure female seeds is improved, and the method issuitable for market promotion.

The invention discloses a method for decomposing ammonium chloride to release hydrogen chloride by using non-volatile acid or acid salt, which is characterized by (1) adding the non-volatile acid or acid salt with weight ratio of 4-15 into a reactor with a blender, a thermometer and a reflux condenser, then heating to 150-200DEG C, (2) adding the solid powered ammonium chloride with weight ratio of 1 in the reactor, reacting at temperature of 200-250DEG C for 1-2 hours to obtain hydrogen chloride by yield coefficient of 95%-96%, (3) pyrolyzing obtained ammonium salt from step 2 and residual mixture of non-volatile acid or acid salt to release the hydrogen and then sending to step (1) and (2) to be recycled. The method resolves the problem of ammonium chloride sublimation well with low reaction temperature, fast reaction speed and thorough decomposition of the ammonium chloride, raw material can be recycled, cost is low, and the method is easy to be industrialized.

The invention relates to the technical field of fruit vinegar, and particularly relates to fruit vinegar and a preparation method thereof. The fruit vinegar is prepared by adopting various fruits, such as papaya, jujubes, lemons, mangos, pomegranates and green cucumbers, so that the fruit vinegar is rich in nutrients; moreover, the taste of the fruit vinegar is improved, and the prepared fruit vinegar is bright red, strong in fruit fragrance, moderate in acidity and rich in nutrients and has the functions of invigorating the stomach and promoting digestion; and the physical-chemical indexes and microorganism indexes of the obtained fruit vinegar are better than those of GB2719-2003, specifically, the content of soluble solids detected by adopting refractometry at 20 DEG C is more than 4 percent, the content of total acids is more than 0.4 g / 100mL on the basis of acetic acid, the content of free amino acid is more than 286 mg / 100mL, and the content of nonvolatile acid is more than 0.68g / 100mL on the basis of lactic acid.

The invention discloses a binary compounded fermentation agent. The binary compounded fermentation agent comprises a compounded microbial agent I and a compounded microbial agent II. The invention further discloses an application of the binary compounded fermentation agent in table vinegar brewing. The compounded microbial agent I is added prior to acetic acid fermentation, and the compounded microbial agent II is added at an acetic acid fermentation stage. The binary compounded fermentation agent disclosed by the invention can be applied to brewing of solid-state fermented table vinegar and liquid-state fermented table vinegar and is low in dosage, high in fermentation efficiency, high in yield and stable in quality, the content of flavor substances such as nonvolatile acids, amino-acid-state nitrogen and esters can be remarkably increased, and the product is rich in flavor, full and soft in mouth feel and outstanding in fragrance.

The present invention provides an imageable composition including an acid curable composition, an acid generator, an infrared absorber having a counter anion derived from a non-volatile acid, and a strong acid such as a sulfonic acid. The imageable composition may include components such as a crosslinkable binder or a colorant. In one embodiment, the imageable composition further includes a colorant having a counter anion derived from a non-volatile acid. The present invention further provides an imageable element, which includes a substrate and an imageable coating on a surface of the substrate. Also provided is method of producing an imaged element according to the invention.

The invention belongs to the technical field of organic chemical synthesis and particularly relates to an ethylene antagonist and a preparation method thereof. The first purpose of the invention is tosolve the problems that an existing ethylene antagonist is relatively harmful to a human body, and to-be-preserved crops are easily withered; and the second purpose of the invention is to solve the problems that an existing preparation method is low in synthetic yield, the generation amount of a byproduct, namely waste acid is relatively large, and adverse influences are caused to the environmentand equipment. The preparation method comprises the following steps: heating isopropyl aminooxyeacetic acid in a non-volatile acid water solution to remove protecting groups so as to generate salt ofaminooxyacetic acid, wherein the reaction terminal is arrived when the residual amount of isopropyl aminooxyeacetic acid is less than 0.1%; carrying out reduced pressure concentration on the obtainedproduct water solution so as to remove partial moisture; adding an alcohol organic solvent so as to crystalize salt, cooling, and stirring so as to realize complete crystallization; and filtering toremove the solvent, washing a filter cake by virtue of an alcohol solvent, and drying, so as to obtain a finial product.

The invention discloses a method for determining acetic acid content in a biomass preprocessing fluid, and relates to the detection of acetic acid content. The method comprises the following steps: adding a non-volatile acid solution to a biomass preprocessing fluid so as to obtain a to-be-detected solution, wherein hydrogen ion concentration of the to-be-detected solution is 10-4mol / L-5.0mol / L; respectively adding the to-be-detected solution and multiple acetic acid standard solutions differing in concentration to different upper-space bottles and sealing to obtain to-be-detected upper-space bottles, wherein the volume of solutions in the to-be-detected upper-space bottles is no more than 0.55mL / mL of the capacity of each upper-space bottle; transferring the acetic acid to a gas chromatograph by virtue of an all-volatile upper-space gas chromatography technology so as to detect a gas chromatography signal value of the acetic acid; and finally, calculating the acetic acid content in the biomass preprocessing fluid. The method for determining the acetic acid content in the biomass preprocessing fluid, disclosed by the invention, has the advantages of being simple and rapid in sample making, high in determination accuracy, good in repeatability and the like, and is widely applied to the detection of the acetic acid content in the biomass preprocessing fluid.

The invention discloses a method for producing bran vinegar through solid state fermentation, and belongs to the technical field of fermentation. According to the method for producing the bran vinegarthrough solid state fermentation, a modern biological preparation technology is combined with a traditional solid state fermentation technology, according to the stage of saccharification, alcoholization and acetification in the solid-state fermentation process of the bran vinegar, a mode combining machine grain distillation and manual stepping is adopted, the temperature and oxygen content of fermented vinegar products in a solid state are controlled in stages, thus the production rate, stability and ratio of nonvolatile acid to total acid of the solid state fermented bran vinegar are improved, the problem of the fermented vinegar 'growing maggot' is solved, and the flavor quality and taste softness of the solid state fermented vinegar are overall improved.

A process gas analyzing device is provided. The process gas analyzing device may include a sample gas introducing unit configured to introduce a process gas including a sublimable aromatic compound; a sublimable aromatic compound removing unit configured to remove the sublimable aromatic compound; a process gas pretreatment unit arranged between the sample gas introducing unit and the sublimable aromatic compound removing unit; and a gas analyzing unit arranged in a downstream position of the sublimable aromatic compound removing unit. The sublimable aromatic compound removing unit may include an adsorbent of activated carbon including a non-volatile acid.

The invention discloses blending edible vinegar, which is prepared by the following steps of: mixing 60 to 70 weight percent of white vinegar, 5 to 15 weight percent of summer vinegar, 10 to 15 weight percent of five-year aged vinegar and 15 to 25 weight percent of fully smoked vinegar; and decocting the vinegar at high temperature of between 80 and 90DEG C. The prepared blending edible vinegar has mild and sweet mouthfeel, rich aromatic components, high functional hygiene factor content, a ratio of total acid to reducing sugar of about 7:3, a ratio of volatile acid to nonvolatile acid of about 6:4, the ligustrazine concentration of more than or equal to 50mg / L and the general flavones concentration of more than or equal to 70mg / 100mL. Substances influencing flavor and functional factors in the edible vinegar are systematically and quantitatively coordinated, problems of unstable quality, difference in different batches and the like in the conventional edible vinegar brewing are improved, and the edible vinegar with typical flavor and functions, which ensures that sensorial taste and instrument analysis results meet the expected design requirement, is prepared, so that high quality edible vinegar is produced.

The invention provides etching paste. The etching paste is prepared from the following raw materials in percentage by weight: 1-20% of a non-volatile acid, 3-10% of water, 10-40% of a water-based polyurethane thickener, 0.1-1% of a leveling wetting agent, 0.1-2% of a defoaming agent, 2-10% of a thixotropic agent, 30-70% of a water-soluble solvent and 0-5% of pigment. The preparation method of theetching paste comprises the following steps: 1) adding the selected raw materials into a mixer container with stirring and dispersing functions, wherein cooling water is introduced in the mixer container; 2) carrying out mixing at a speed of 60 rpm for 3 minutes; 3) opening a dispersing switch; 4) carrying out dispersing at a rotating speed of 800-1000 rpm for 10 minutes; 5) carrying out dispersing at a rotating speed of 100-150 rpm for 3 minutes; and 6) preparing a product. According to the etching paste provided by the invention, the raw materials are simple, and the etching effect is good.

The invention relates to a method for preparing graphite at ultra-low temperature, and belongs to the technical field of expanded graphite. The method for preparing the expanded graphite at the ultra-low temperature is characterized in that a technical process for preparing the expanded graphite at the ultra-low temperature comprises the steps of soaking wet graphite oxide in an aqueous solution of non-volatile acid, and performing acid treatment; separating acidulated graphite oxide from an acid solution; performing heat treatment on the wet and acidulated graphite oxide under the ultra-low temperature of 50 to 110 DEG C to directly obtain a preliminary product, washing, and purifying to obtain the expended graphite. The method provided by the invention has the advantages that the process is simple, the operation is convenient, the production cost is lowered while the production efficiency is improved, and the like, and the method is extremely suitable for large scale production of the expanded graphite.

The present invention belongs to the technology of evaporation and distillation treatment technology. The technological process includes the main steps of: acidifying the concentrated liquid with non-volatile acid via stirring to convert the salt of propionic acid and acetic acid into free acid; and decompression distillation to obtain distillate mixed water solution of propionic acid and acetic acid. It is preferably to perform alkali pre-treatment and decompression distillation before acidification. The present invention features that from the fermented propionic bacteria liquid, mixed water solution of propionic acid and acetic acid with high purity may be extracted, and the mixed water solution may be further produced into various side products. The present invention can reduce exhausted waste liquid and environmental pollution.

The invention relates to the field of thermal insulation mortar and provides a thermal insulation dry-mixed mortar base material and a preparation method thereof. The method includes: adding red mud and half of rare earth powder into water to form slurry, adding nonvolatile acid liquid for adjusting a pH value of the slurry to 7-8, drying and grinding into powder for standby application; well mixing limestone powder, dispersible adhesive powder, powdery anti-cracking additives, the other half of rare earth powder and red mud and rare earth powder mixed powder obtained at the above step to obtain the thermal insulation dry-mixed mortar base material. Effective red mud utilization is realized, and two technical problems including inadequacy in red mud comprehensive utilization and failure of existing thermal insulation dry-mixed mortar base materials in meeting of people's requirements are both solved. When water is added, gas is generated by reaction of Y2O3, La2O3, Sm2O3, La2O3 and Fe2O3 in the rare earth powder and components such as CaO in limestone to form closed air pores, so that thermal plates made from the thermal insulation dry-mixed mortar base material are provided with uniform closed air pores which form uniform thermal insulation cavities, and excellent thermal insulation performances are achieved.