46results about How to "Large molecular size" patented technology

The disclosed catalyst comprises: the 1.00-1.50% Pd as active constituent, and the auxiliary agent composed by 0.5-5% X1 from IA family and 1-5% X2 from VIB family. This invention reduces cost greatly and fit to the hydrogenation remove-olefin for C5 petroleum resin.

The invention relates to the field of papermaking production, aims at solving the problem that the current papermaking industry needs a comprehensive dry strength resin concurrently having super enhanced effect of polyacrylamide and low cost feature of amylum, and provides a preparation method of a water-solubility amylum-acrylamide copolymer and application of the water-solubility amylum-acrylamide copolymer. The water-solubility amylum-acrylamide copolymer is prepared by the following components in parts by weight: 25-90 parts of monomer A, 0-20 parts of monomer B, 0-20 parts of monomer C, 0.02-1.5 parts of molecular weight control agents, 0.005-3.5 parts of crosslinking monomers, 5-30 parts of the amylum, 0.1-1 parts of catalyst and 0.2-2 parts of terminating agents, wherein water is added until product solid content is adjusted to be 10%-30%. The water-solubility amylum-acrylamide copolymer is used as the dry strength resin, and has strong enhanced effect, lower cost than the currently ordinary polyacrylamides dry strength resin and better economic benefit.

The invention discloses an upper surface antireflective coating composition for photolithography, and relates to the technical field of lithography processing in order to solve the problems of low transmittance and high refractive index of upper surface antireflective coating compositions used at present and large thickness of coating layers. The composition is mainly composed of a fluorine-containing substance, an acid, an amine and a solvent suitable for dissolving the above components, the pH value of the composition is less than or equal to 7, and the fluorine-containing substance is one or a mixture of the two of a perfluoropolyether polymer and a fluorine-containing compound. The fluorine-containing substance is mixed with a water-soluble resin solution to form a uniform solution, the amine compound is added to the fluorine-containing substance, a reaction is carried out to form an amine salt, the water-soluble resin solution containing the fluorine-containing substance and the amine salt solution are uniformly mixed, and an amino acid derivative and water are added to prepare a uniform transparent solution. The composition has the advantages of prevention of multiple reflection of light in a photoresist, reduction of the thickness of a photoresist coating layer in the photolithography, and improvement of the quality of a lithography pattern.

The invention provides an expression method of a human globular adiponectin-glucagon-like peptide-1 analog (gAd-GLP-1-A) peptide fusion protein. The method comprises the following steps of: constructing a prokaryotic expression vector containing human gAd-GLP-1-A fusion genes, converting Escherichia coliBL21 (DE3), obtaining a gAd-GLP-1-A fusion protein containing 6*His tag from an inclusion body by inducible expression, and further digesting the gAd-GLP-1-A fusion protein by using enterokinase to obtain the protein. Animal research shows that the fusion protein has remarkable activity of reducing blood sugar. The fusion protein can promote pancreas islet beta cells to secrete insulin, improve the insulin resistance and remarkably correct the internal metabolic disturbance of type-2 diabetes, and can be applied to preparation of medicaments for treating the type-2 diabetes.

The invention discloses a photosensitive dopant, a preparation method thereof, a self-assembly system and a photoresponse device. The chemical structure of molecules of the photosensitive dopant is characterized in that 3,5-bi-(4-hydroxyphenylazo) benzoic acid is adopted as a base framework, a carboxyl terminal is connected with a chirality group, and a hydroxyl terminal is connected with a flexible chain. Under stimulation of external light, a photosensitive group- di-azobenzene with high ultraviolet absorption capability can achieve quick response and can be isomerized, quick isomerization of the chirality group in the structure and even the entire molecules is further induced, and the deformation index of the molecules is higher and quicker. In the self-assembly system of the molecules, rearrangement of the molecules in the system can be triggered more obviously, and physicochemical characteristics, like optimal and electrical characteristics, of the system are regulated.

The invention discloses anti-rust additive which belongs to the field of metal corrosion and protection. The invention also relates to a preparation method of the anti-rust additive which comprises that the anti-rust additive is added to water, water-based cutting fluid, water-based grinding fluid, water-soluble anti-rust oil, oil-soluble anti-rust oil, paint or coating to play an anti-rust pole. The anti-rust additive provided by the invention does not contain carcinogen nitrite, and is water-soluble anti-rust additive with good performance and no harm; and in addition, the anti-rust additive is water-soluble, can be used under the condition of hard water, and has good anti-rust effect. The general formula of the anti-rust additive is shown as the accompanying drawing.

The invention discloses super-weatherability anti-acid rain raindrop imprint-resistant external wall water paint and a preparation method thereof. The super-weatherability anti-acid rain raindrop imprint-resistant external wall water paint comprises deionized water, a thickener A, a wetting agent A, a wetting agent B, a dispersant, a defoamer, a film forming aid, a pH stabilizer, an antifreezing agent, titanium dioxide, barite, mica powder, calcined kaolin, a modified polymer emulsion, a thickener B, a leveling agent, a bactericidal mildew preventive and deionized water according to mass percents. The super-weatherability anti-acid rain raindrop imprint-resistant external wall water paint has acid and alkali resistance, weatherability, water resistance, mildew proof effects, raindrop imprint resistance, scrubbing resistance, environmental friendliness and energy saving.

The invention discloses a glucose polymer peritoneal dialysis solution and a preparation process of the glucose polymer peritoneal dialysis solution, belonging to the technical field of peritoneal dialysis. The glucose polymer peritoneal dialysis solution is prepared from the following components in parts by weight: 50-150 g / L of glucose polymer, 80-150 mEq / L of sodium ions, 80-110 mEq / L of chloride ions, 0-4.0 mEq / L of calcium ions, 0-4.0 mEq / L of magnesium ions, 10-45 mEq / L of lactate radical ions, and an appropriate amount of water for injection. The components are mixed and dissolved, active carbon is added, thermal insulation and adsorption are carried out, decarburization and filtering are carried out, the pH value is adjusted, filling is carried out, opening sealing is carried out,sterilization is carried out, and thus the product is obtained. Compared with the traditional peritoneal dialysis solution, the product provided by the invention has the advantage that little glucosedegradation products, especially 5- hydroxymethylfurfural, are generated, and injuries caused by the product to the peritoneum during clinical use of the product are reduced; meanwhile, the stabilityof the molecular weight of the glucose polymer is guaranteed, and the effective ultrafiltration during the long abdomen indwelling period is realized.

The invention provides a printing ink using an inorganic nanometer material. The printing ink using the inorganic nanometer material adopts an organic solvent, and comprises at least one type of inorganic nanometer material and at least one type of fluorine-containing silane organic solvent, wherein the structure of the fluorine-containing silane organic solvent is shown in a formula I, namely (Rb')n'-(Rfb)n-(Rfa)m-(Ra')m'-SiR1(R2)(R3); in the formula I, Rfa and Rfb are independently selected from partially or totally fluorated alkyl and aryl; Rb' is independently selected from H (hydrogen), aliphatic group with C1 to C30, aromatic group, F (fluorine), Cl (chloride), Br (bromine), I (iodine), sulphonate, sulfonyl ester, and methoxyl; Ra' is selected from aliphatic group with C1 to C30, aromatic group, sulphonate, sulfonyl ester, and methoxyl; R1, R2 and R3 are independently selected from H, hydroxyl or substituted hydroxyl, and aryl or substituted aryl; the value ranges of m, n, m', and n' meet the requirements that m and n are respectively 0 or 1, and m and n are not simultaneously 0; m' and n' are respectively 0 or 1.

The invention discloses orthographic projection curtain wall water paint which comprises the following components: deionized water, a thickening agent A, a wetting agent A, a wetting agent B, a dispersant, a defoaming agent, filming aids, a pH value stabilizer, an anti-freezing agent, titanium dioxide, barite, a pearl pigment, a modified polymer emulsion, a thickening agent B, a leveling agent, asterilization anti-mold agent, gain micro beads and deionized water. The invention further discloses a preparation method of the orthographic projection curtain wall water paint. The water paint disclosed by the invention is capable of replacing common external curtain cloth and has the advantages of being wide in view angle, high in gain, high in water resistance, excellent in anti-mold function,and the like, and in addition, the trouble of mounting and moving curtain cloth can be avoided.

The invention relates to the field of lithium batteries, in particular to a solid electrolyte and a lithium battery cell with the solid electrolyte, and a lithium battery. The solid electrolyte includes LiMF<x>H<12-x>, wherein M is B, Ga, Al or a combination thereof. Compared with the existing solid electrolyte, a compound with F atoms has larger molecular volume, and thus can provide largerspace for the Li+ and improve the migration capability of lithium ions. Furthermore, the M-F bond can form a stable structure, so that the solid electrolyte can have high electrochemical window and flexibility, and the structural stability and cycle performance can be improved when lithium ions migrate rapidly. Based on the structural characteristics, the solid electrolyte can have higher shear modulus and Young's modulus.

The invention discloses a preparation method of a silicon-acrylic emulsion capable of being used for preparing a polymer cement-based waterproof coating. The method comprises the following steps: by adopting an emulsion polymerization method, taking a vinyl monomer, a vinyl-containing functional organic silicon monomer and the like as comonomers, dropwise adding an initiator by virtue of a polymerizable emulsifier and mechanical stirring to enable the monomers to be polymerized and nucleated in water, continuously dropwise adding the initiator and the residual monomers to carry out double-bond free radical polymerization, finally carrying out ice-water bath quenching reaction, and adjusting the pH value to obtain the silicon-acrylic emulsion with the core-shell structure. According to the polymer cement-based waterproof coating prepared from the silicon-acrylic emulsion, the water resistance and the mechanical property of the waterproof coating can be remarkably improved, in addition, due to the fact that silicon-oxygen bonds on a molecular structure are neatly arranged towards the outer layer, the coating has excellent hydrophobicity and air and moisture permeability, and the problems of bulging and falling during construction on a wet base plane are solved.

The invention discloses a photoacid generator with a diphenyl sulfonium structure and a synthesis method of the photoacid generator, and relates to the field of photoresists, the photoacid generator has the following structure shown in the description, wherein A is C1-C5 fluoroalkane, and B is a naphthenic base of C3-C10. The photoacid generator disclosed by the invention can control acid diffusion, reduce line width roughness, prevent pattern damage and form photoetching patterns with uniform sizes, and has high transparency under a 193nm light source.

Provided are preparation and application of a refined decolorizing agent and cleaning for edible oil. Composite available chlorine gas is obtained through a chlorate aqueous solution under the condition of taking inorganic acid or organic acid as an oxidation reductant, a secondary chemical reaction is conducted for adsorption through stabilizer carrier hydroxide and a silicon compound, and a granular composite finished product of the refined decolorizing agent is obtained through concentration, fluidized drying and granulation; particularly, acid reaction mother liquor is not taken as waste liquor to be discharged, and the reaction mother liquor is reused. The preparation and application of the refined decolorizing agent and cleaning for the edible oil can be used for animal and vegetable oil refined decolorizing and specially for edible oil refined decolorizing, and the industry can respond to the important contribution on the aspects of energy conservation and emission reduction provided by the country; the edible oil industry can save energy by over 80 percent, and discharge of the waste clay residue containing oil is reduced by 100 percent, and the preparation and application of the refined decolorizing agent and cleaning for the edible oil can be further used for other food and organic matter decolorizing. The product has important environmental and economic value, wide application and promotion prospects are achieved, and the product takes the leading position in the world.

The invention belongs to the field of constructional engineering material concrete water reducers, in particular to a starch-base water reducer with a reinforcement corrosion inhibition function. Thewater reducer is based on a starch-base water reducer, and is formed by adding mercaptoacetic acid to the starch-base water reducer to perform grafting reaction, and the mixing amount of the water reducer can be 0.2 to 1 percent of the weight of cement. The water reducer prepared through a method is high in water reducing ratio, good in the fluidity of cement paste and good in cohesiveness, belongs to substance added and prepared in simulated concrete pore solution saline solution, and has an excellent rust resistance function.

The invention discloses a pure inorganic microporous desiccant and a synthetic method thereof. The chemical formula of the desiccant is K3HSiW12O40.16H2O, the molecular weight is 3343.59, a space group is Pm3<->m, cell parameters: shown as an equation, Dc=4.605g.cm<-3>, and Z=1, the synthetic method comprises the steps of weighing Na2WO4.2H2O and dissolving the Na2WO4.2H2O into water, and dropwise adding hydrochloric acid to obtain a solution A; weighing Na2SiO3 and dissolving the Na2SiO3 into distilled water so as to obtain a solution B; mixing the solution A and the solution B and adjusting the pH value of a mixed solution by using HCl, adding solid KCl into the mixed solution, separating out a white solid, performing suction filtration, and drying so as to obtain K8SiW11O39.14H2O; then dissolving the K8SiW11O39.14H2O into distilled water to obtain a solution; adjusting the pH by using diluted hydrochloric acid, dropwise adding an aqueous solution containing KCl, stirring for 30min at room temperature, standing for two days in a filtrate chamber, separating out a colorless square shaped crystal; the pure inorganic microporous desiccant is simple in the synthetic method, pure in products, high in productive rate, clear and definite in composition and structure, good in heat stability, free of corrosivity and pollution to environment, can quickly adsorb water vapour in air and water in an organic solvent, and can be recycled and reused after being dried at 150 DEG C.

The invention discloses a photosensitive resin and a photoresist composition using the photosensitive resin. The photosensitive resin comprises a resin type photosensitive anion and a sulfonium salt cation, the structural formula of the resin type photosensitive anion is the structural formula of the sulfonium salt cation, and R1 and R2 are H or methyl; r3 is a modified structure; r4, R5 and R6 are one or more of alkyl, aryl or substituent groups containing sulfur / oxygen / nitrogen heteroatoms, wherein the number of hydrogen atoms is an integer of 1-40, and the number of carbon atoms is an integer of 1-20; n is an integer between 2 and 200, and R7 is one or more of alkyl, aryl or functional structures containing sulfur / oxygen / nitrogen heteroatoms. When the photosensitive resin disclosed by the invention is applied to the photoresist composition, the film forming capability of the photoresist composition can be improved, a photoetching pattern can be improved, the resolution of the photoresist can be improved, and the line width roughness can be reduced, so that the photoresist composition can be applied to the photoetching technology of a large-scale integrated circuit.

The invention discloses a method for manufacturing an aluminum mirror without being coated with protective paint by using a vacuum coating machine, which comprises the following steps: firstly, cleaning glass, and then, filling argon gas into a vacuum chamber; adjusting bombardment current to carry out ion bombardment on the glass, and then, carrying out vacuum pumping operation; opening a group of tungsten evaporator flash evaporation aluminum wires to form an aluminum metal film on the surface of the glass; and then, filling oxygen gas, and opening another group of tungsten evaporator flash evaporation titanium wires and iron-chromium-aluminum alloy wires to further form a layer of mixed film of metals of titanium, iron, chromium and aluminum and oxides thereof on the aluminum metal film, thereby separating the aluminum metal film from air and water to perform the protective effect. The method of the inveniton leads the aluminum mirror not need to be coated with protective paint by forming a layer of protective film on the aluminum metal film, thus the application field of the aluminum mirror can be widened; and meanwhile, because the metal film is coated in the vacuum chamber in the coating machine, the production process has environment protection and energy saving, and the industrial mass production can be realized.

The invention relates to the technical field of rubber, in particular to a fluorosilicone rubber composition and a preparation method. The composition includes 0-100 parts of first raw fluorosiliconerubber, 100 parts of second raw fluorosilicone rubber modified by fluorine-containing polyhedral oligomeric silsesquioxane, 30-120 parts of fumed silica, 5-20 parts of hydroxyfluorosilicone oil the viscosity of which (at 25 DEG C) is 90-120 mPa.s, 0-10 parts of high-vinyl-content fluorosilicone oil, 1-3 parts of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane and 0-1 part of pigment, wherein the sidechain of polymer chains of the second raw fluorosilicone rubber modified by fluorine-containing polyhedral oligomeric silsesquioxane is trifluoropropyl polyhedral oligomeric silsesquioxane. The composition is not bonded to rollers during mixing in a three-roller machine, and has good mechanical strength, resistance to high temperature, resistance to fuel oil and good comprehensive performance after vulcanization.

The invention discloses an energy-saving phase-change interior wall water-based paint and a preparation method thereof, and belongs to the technical field of coatings. The energy-saving phase-change interior wall water-based paint comprises the following raw material components: deionized water, cellulose A, cellulose B, a dispersant, a wetting agent, a potassium silicate stabilizer, an antifoaming agent A, titanium dioxide, wollastonite, mica powder, diatomite, an antifoaming agent B, a potassium silicate solution, a modified polymer emulsion, a coalescing agent, a thickening agent A, a thickening agent B, a thickening agent C and a microcapsule phase change material. The energy-saving phase-change interior wall water-based paint prepared by the invention has good functions of leveling, decorating, and sealing base materials and the like based on the phase-change material heat storage and release technology; the energy-saving phase-change interior wall water-based paint has stable andefficient heat storage and release functions, endothermic reaction is induced when the wall surface temperature is above 25 DEG C, and exothermic reaction is induced when the wall surface temperatureis lower than 15 DEG C, the overall temperature of buildings is automatically adjusted, energy consumption is reduced, the applicability is high, and the paint is easy to apply and popularize.

The invention discloses an organic silicon modified hydroxyl polyacrylate dispersion as well as a preparation method and application thereof. The organic silicon modified hydroxyl polyacrylate dispersion is prepared from the following raw materials: a monomer mixture, an organic silicon monomer, a reactive diluent and isocyanate, in the preparation raw materials, the solid content of the organic silicon modified hydroxyl polyacrylate dispersion is 42 to 46 percent; the content of small molecular alcohol in the organic silicon modified hydroxyl polyacrylate dispersion is 1t; 0.1%; the particle size of the organic silicon modified hydroxyl polyacrylate dispersion is 1t; the wavelength is 110nm. A paint film of a water-based two-component polyurethane coating prepared from the organic silicon modified hydroxyl polyacrylate dispersion has the characteristics of high drying speed, high hardness and good chemical resistance.

The invention discloses an indirect anti-human globulin accelerated blood matching test method, which comprises: adding physiological saline to red blood cells, washing, uniformly mixing, carrying outcentrifugal separation, removing the supernatant, adding physiological saline, preparing a red blood cell suspension, adding plasma or serum, uniformly mixing, adding an indirect anti-human globulintest acceleration enhancer, uniformly mixing, incubating, adding physiological saline, carrying out centrifugal separation, slightly shaking the test tube, observing the result, and judging the resultaccording to the red blood cell agglutination or dispersion condition. According to the present invention, the cross matching test and / or the red blood cell irregular antibody screening test before the blood transfusion is accelerated and enhanced by using the indirect anti-human globulin test acceleration enhancer, and the indirect anti-human globulin test acceleration enhancer has characteristics of short incubation time, high sensitivity and strong accuracy, can be quickly detect various weak red blood cell irregular antibodies, and is suitable for emergency rapid cross-matching and red blood cell irregular antibody screening.

The invention relates to the technical field of coatings and particularly discloses a cathode electrophoretic coating with high throwing power and a preparation method of the cathode electrophoretic coating. The cathode electrophoretic coating comprises the following raw materials in parts by weight: 5-15 parts of color paste, 35-70 parts of emulsion and 30-50 parts of deionized water, wherein thecolor paste is prepared from components in parts by mass as follows: 5-30 parts of organosilicone modified acrylic resin, 5-20 parts of an environment-friendly cosolvent, 2-7 parts of a neutralizer,0.1-1 part of a surfactant, 20-45 parts of deionized water, 3-27 parts of kaolin and 5-25 parts of pigment; the emulsion is prepared from components in parts by mass as follows: 30-40 parts of organosilicone modified acrylic resin, 3-9 parts of an emulsifier, 2-10 parts of a neutralizer and 25-45 parts of deionized water. The prepared cathode electrophoretic coating can meet the requirement for workpiece surface coating of metal building materials, and a film layer with uniform thickness can be obtained at a gap or a shielded part of a coated workpiece.

The invention relates to the field of papermaking production, aims at solving the problem that the current papermaking industry needs a comprehensive dry strength resin concurrently having super enhanced effect of polyacrylamide and low cost feature of amylum, and provides a preparation method of a water-solubility amylum-acrylamide copolymer and application of the water-solubility amylum-acrylamide copolymer. The water-solubility amylum-acrylamide copolymer is prepared by the following components in parts by weight: 25-90 parts of monomer A, 0-20 parts of monomer B, 0-20 parts of monomer C, 0.02-1.5 parts of molecular weight control agents, 0.005-3.5 parts of crosslinking monomers, 5-30 parts of the amylum, 0.1-1 parts of catalyst and 0.2-2 parts of terminating agents, wherein water is added until product solid content is adjusted to be 10%-30%. The water-solubility amylum-acrylamide copolymer is used as the dry strength resin, and has strong enhanced effect, lower cost than the currently ordinary polyacrylamides dry strength resin and better economic benefit.

The invention relates to a grease-derived sodium / zinc compound liquid heat stabilizer for PVC and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing grease-derived liquid sodium, and then preparing grease-derived liquid zinc; and finally, preparing the grease-derived sodium / zinc compound liquid heat stabilizer. The heat stabilizer provided by the invention is relatively large in molecular volume and relatively long in fatty acid chain section, so that a grease-derived sodium / zinc compound liquid heat stabilizer product has the potential of a synergistic plastifying function. In addition, in the presence of a six-member alicyclic ring structure and a polycarboxylate structure, the heat stability of the grease-derived sodium / zinc compound liquid heat stabilizer product is effectively improved, so that the deficiency of an existing zinc calcium stearate compound heat stabilizer is made up. The heat stabilizer serving as the heat stabilizer for PVC can reduce the problem of dust pollution caused by a powder heat stabilizer. By selecting a derivative of natural grease as a raw material, a high quality PVC heat stabilizer is prepared, so that high additional value utilization of green renewable forest resources is favorably pushed, thereby complying with the demands on greenness and environmental friendliness and sustainable development.

The invention discloses a pure inorganic microporous desiccant and a synthetic method thereof. The chemical formula of the desiccant is K3HSiW12O40.16H2O, the molecular weight is 3343.59, a space group is Pm3<->m, cell parameters: shown as an equation, Dc=4.605g.cm<-3>, and Z=1, the synthetic method comprises the steps of weighing Na2WO4.2H2O and dissolving the Na2WO4.2H2O into water, and dropwise adding hydrochloric acid to obtain a solution A; weighing Na2SiO3 and dissolving the Na2SiO3 into distilled water so as to obtain a solution B; mixing the solution A and the solution B and adjusting the pH value of a mixed solution by using HCl, adding solid KCl into the mixed solution, separating out a white solid, performing suction filtration, and drying so as to obtain K8SiW11O39.14H2O; then dissolving the K8SiW11O39.14H2O into distilled water to obtain a solution; adjusting the pH by using diluted hydrochloric acid, dropwise adding an aqueous solution containing KCl, stirring for 30min at room temperature, standing for two days in a filtrate chamber, separating out a colorless square shaped crystal; the pure inorganic microporous desiccant is simple in the synthetic method, pure in products, high in productive rate, clear and definite in composition and structure, good in heat stability, free of corrosivity and pollution to environment, can quickly adsorb water vapour in air and water in an organic solvent, and can be recycled and reused after being dried at 150 DEG C.

Preparation and application of a refined decolorizer for edible oil cleaning. Composite effective chlorine gas is prepared from chlorate aqueous solution under the condition of inorganic acid or organic acid as redox agent, then adsorbed by the secondary chemical reaction of stabilizer carrier hydroxide and silicon compound, and then concentrated, boiled and dried to produce Granular composite finished product - refined decolorizer. In particular, the acidic reaction mother liquor is not discharged as waste liquid, and the by-product sodium sulfate is recovered after reprocessing the waste liquid, and then the reaction mother liquor is reused. The invention can be used for refined decolorization of animal and vegetable oils, especially for edible oil refinement, which can make the industry make a significant contribution in responding to the energy saving and emission reduction proposed by the state. The invention can save more than 80% energy in the edible oil industry; Discharge 100% of the oily waste clay filter residue. It can also be used for decolorization of other foods and organic matter. The product of this technology has great environmental protection and economic value, and has broad promotion and application prospects; it occupies a leading position in the world.

The invention discloses a compound taking a triazine derivative as a core and application of the compound, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is shown as a general formula (1); the compound disclosed by the invention contains a triazine parent nucleus structure, and has appropriate HOMO and LUMO energy levels and relatively high triplet state energy level (T1). After the compound is applied to an OLED device, the driving voltage of the device can be effectively reduced, the current efficiency of the device is improved, and the service life of the device is prolonged.

The invention discloses a polysiloxane resin for photosensitive solder resist white oil and its preparation method and application. The preparation method comprises the following steps: (1) synthesizing a polysiloxane prepolymer; (2) synthesizing a photosensitive polysiloxane (3) synthesizing alkali-soluble polysiloxane resin, that is, the polysiloxane resin for photosensitive solder resist white oil. The use of the alkali-soluble polysiloxane resin of the present invention in photosensitive solder resist white oil has excellent black non-sensitivity scratch resistance, and at the same time solves the problem that the acrylic resin-type solder resist white oil coating in the current market is prone to black non-sensitivity scratches question.