80 results about "Partial hydrolysis" patented technology

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect multi-element composite amphiphilic particle as well as a preparation method and application thereof. The particle comprises a core-shell separated magnetic Fe3O4 particle core and a shell layer, wherein the shell layer is a silicon dioxide / titanium dioxide hybrid shell layer with a fine hole structure; the outer surface of the shell layer comprises a hydrophilic part and a hydrophobic part, the hydrophilic part has an amino group, the amino group is grafted with polydopamine, and gallic acid and catechinic acid are compounded on the polydopamine; poly (diethylaminoethyl methacrylate) is grafted on the inner surface of the shell layer and the surface of the magnetic Fe3O4 particle core. The magnetic multi-effect multi-component composite amphiphilic particle provided by the invention has excellent emulsifying performance and can realize oil-water separation; meanwhile, partial hydrolyzed polyacrylamide can be selectively adsorbed, and oily sewage containing partial hydrolyzed polyacrylamide can be efficiently treated in one step.

The invention belongs to the technical field of food engineering, and particularly relates to an anti-allergic special medical infant milk protein partial hydrolysis formula food composition, a preparation method and application. According to the infant milk protein partial hydrolysis formula food composition for the special medical purpose, the mass ratio of the 2 '-fucosyllactose to the lactobacillus acidophilus NCFM to the bifidobacterium animalis Bi-07 is (150-200): (5-10): (2-8). The partially hydrolyzed formula food composition provided by the invention can prevent respiratory tract infection and maintain the natural defense capability of children; the infant health is promoted; the method helps infants to establish healthy intestinal microflora, which is crucial to immune system and cognitive development.

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect titanium-coated iron amphiphilic particle as well as a preparation method and application thereof. The particle comprises a magnetic Fe3O4 particle inner core and a titanium dioxide shell layer separated from the magnetic Fe3O4 particle inner core in a core-shell mode, the outer surface of the titanium dioxide shell layer comprises a hydrophilic part and a hydrophobic part, the inner surface of the titanium dioxide shell layer and the surface of the magnetic Fe3O4 particle inner core are grafted with poly (diethylaminoethyl methacrylate), and the titanium dioxide shell layer is of a fine hole structure. The particles provided by the invention have excellent emulsifying performance, liquid drops stabilized by the particles can be controlled by an external magnetic field, and enrichment and migration of oil drops are realized, so that oil-water separation is realized; meanwhile, partial hydrolyzed polyacrylamide can be selectively adsorbed, and oily sewage containing partial hydrolyzed polyacrylamide can be efficiently treated in one step; the titanium dioxide shell layer on the surface of the particle can effectively improve the acid resistance and alkali resistance of the amphiphilic particle.

This two-component type room temperature rapid-curable resin composition comprises, at a specific ratio: a first agent containing, at a specific ratio, (A) an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain, (B) a hydrolyzable organosilane compound represented by formula (1) (in formula (1), R1 represents a monovalent hydrocarbon group, n represents 1-8, and m represents 3 or 4) and / or a partial hydrolysis condensate thereof, and (C) a curing catalyst; and a second agent containing (A') an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain. The two-component type room temperature rapid-curable resin composition has excellent rapid curability and deep curability, provides fine workability, and, when being cured, causes elimination / release of a cyclic ketone compound such as cyclobutanone and cyclopentanone as a leaving group (elimination compound). Thus, the composition solves problems regarding safety and hazardous properties with respect to human and the environment.

The application discloses a plasma cutting protection material, a preparation method and application thereof, and comprises the following components in parts by mass: resin 18-40 parts, toughening agent 0.1-2 parts, hydrolysis aid 0.7-4 parts, and solvent 50-100 parts. In the plasma cutting protection material, the resin is partially hydrolyzed by the hydrolysis aid, so that the hydrophilicity of the resin is enhanced, the miscibility with the solvent is improved, and a complete protection film can be formed on a wafer surface to resist etching of plasma; after the cutting process is completed, the formed protection film has extremely strong water solubility and can be easily removed, so that the cleaning process is simple.

The present invention discloses a modified polyimide hollow fiber membrane. The hollow fiber membrane comprises a polysulfone / polyethersulfone matrix component and a modified polyimide hydrophobic polymer containing 30% to 100% of the matrix component by weight. The modified polyimide hydrophobic polymer is prepared by mixing water, a strongly polar solvent, an alkaline catalyst, and a polyimide resin at 80 to 120°C for a partial hydrolysis reaction for 5 to 10 hours. After the solution is cooled, the pH is adjusted to 1 to 3 to remove water. A polyamine is first added and stirred for 2 to 4 hours. A carboxyl-containing anticoagulant is then added and a grafting reaction is carried out for 12 to 48 hours to obtain the modified polyimide hydrophobic polymer. The hollow fiber membrane prepared by the present invention has a good ultrafiltration coefficient, significantly improved hydrophilicity, effectively reduces the deposition of prothrombin and fibrin, and significantly improves the anticoagulant effect, making it suitable for use as a blood purification material.

A room-temperature-curable organopolysiloxane composition that contains: 100 parts by mass of the product of reacting (A) a diorganopolysiloxane that is capped at both ends by a hydroxyl group, a hydroxy-group-containing hydrocarbon compound in such an amount as for there to be 0.01-0.5 mol per 1 mol of hydroxyl groups that are bonded to silicon atoms in the diorganopolysiloxane, and platinic chloride hexahydrate in an amount that is 0.01-1 mass % of the total of component (A); (B) 3-300 parts by mass of an inorganic filler; (C) 1-20 parts by mass of an organosilane that has at least 3 hydrolyzable groups per molecule thereof and / or a partial hydrolysis condensate of an organosilane that has at least 3 hydrolyzable groups per molecule thereof; (D) 0.01-5 parts by mass of a condensation cure catalyst; and (E) 0.1-5 parts by mass of a silane coupling agent (excluding component (C) and component (D)). The room-temperature-curable organopolysiloxane composition gives cured products that retain low-elastic-modulus rubber elasticity over long periods of time and do not readily contaminate natural rock, coated aluminum, or the like.

The method of the invention comprises the production of highly digestible hydrolysed keratinaceous material comprising the steps of (i) partly hydrolysing keratinaceous material with heat and pressure and (ii) optionally drying the resultant partly hydrolysed material comprising at least partly insoluble material and (iii) subjecting the optionally dried partly hydrolysed keratinaceous material to a chemical hydrolysis step with acid or base to obtain a highly digestible hydrolysed material, and (iv) purifying the highly digestible material. The invention further provides highly digestible keratinaceous material with an amino acid composition reflecting the amino acid composition of the raw material, wherein the amount of de-carboxylated amino acids is less than 500 ppm. Preferably all of the highly digestible material has a molecular weight lower than 10000 dalton, and preferably more than 95 wt % of the highly digestible keratinaceous material has a molecular weight of less than 5000 dalton.

The present invention provides a millable silicone rubber compound comprising: (A) an organopolysiloxane raw rubber; (B) a reinforced silica having a specific surface area of 50-450 m2 / g; (C) a partial hydrolysate of an organoalkoxysilane represented by general formula (1); and (D) one or more condensation reaction catalysts selected from the following (D1)-(D3): (D1) an amine compound that has a boiling point of 30-60 DEG C at 1013 hPa and is liquid at 25 DEG C; (D2) a hexaorganodisilazane represented by general formula (2); and (D3) 1.0-30.0 mass% of ammonia water. As a result, provided are: a millable silicone rubber composite having high plasticity even in millable silicone rubber composites having relatively low hardness; a millable silicone rubber composition; and a method for producing the millable silicone rubber composition. RSi (OR1) 3 (1) R23SiNHSiR23 (2)

The present application relates to an article having a water / oil repellent surface layer. An article is provided, which is composed of a glass substrate, a base layer of a silicon oxide as a main component formed on the outer surface of the glass substrate, and a water / oil repellent surface layer formed on the outer surface of the silicon oxide base layer, in which the film density of the silicon oxide base layer is 1.8 to 2.2 g / cm 3 , and the water / oil repellent surface layer is a water / oil repellent surface layer excellent in water / oil repellency, abrasion resistance (eraser abrasion durability), and sliding properties, which is composed of a cured product of a fluorine-containing polyether group-containing polymer having a hydrolyzable silyl group of a specific structure and / or a partial hydrolysis condensate thereof as a main component.

The invention relates to the technical field of collagen peptide production, in particular to bovine bone collagen peptide production equipment which comprises a shell and a partition plate, a stirring shaft is rotatably connected to the interior of the shell, stirring blades are fixed to the surface of the rotating shaft, the partition plate is arranged in the middle of the shell, and the stirring blades are fixed to the surface of the stirring shaft. The interior of the shell is divided into an upper cavity and a lower cavity by the partition plate, and a communicating groove for communicating the upper cavity with the lower cavity is formed in the partition plate; according to the cattle bone powder mixing device disclosed by the invention, the separation plate is arranged in the shell to separate a production space, and cattle bone powder with high density can be quickly settled due to the gravity effect in a mixing process, so that the cattle bone powder with high density is hydrolyzed in the lower space; and the cattle bone powder with low density in the upper cavity continues to react in the original environment, so that the problems of excessive partial hydrolysis and insufficient partial hydrolysis caused by mixing are avoided, and the quality of a finished product of collagen peptide is favorably stabilized.

The utility model provides a lithium hexafluorophosphate hydrolysate treatment device, which relates to the technical field of lithium hexafluorophosphate production, and comprises a C-shaped support frame, a liquid storage box body is mounted at the bottom in the support frame, a bottom separator is mounted at the top of the liquid storage box body, a middle separator is mounted at the top of the bottom separator, and the middle separator is mounted at the bottom of the liquid storage box body. The separation cylinder is mounted at the top of the middle separator, the separation precision is excellent, the unique circular-truncated-cone-shaped inner cylinder design is adopted in the separation cylinder, and hydrolysis products can be preliminarily and efficiently screened according to the particle size through screen holes distributed in a gradient mode in the outer portion of the separation cylinder; large-particle impurities and partial hydrolysis product phases can be rapidly separated out through the sieve holes with large apertures close to the top, materials are finely separated through the sieve holes with small apertures in the bottom, and the problem that the filtering precision of a traditional single-layer filter screen is insufficient is effectively solved.

The invention discloses split-flow vertical water treatment equipment based on an MABR (Membrane Aerated Baffled Reactor) membrane, which belongs to the technical field of water treatment, adopts a strategy of upper and lower static zoning and fluid split-flow disturbance optimization, and is matched with intermittent and low-intensity fluid pulse and gas pulse to realize mass transfer enhancement and membrane pollution control. Specifically, a reactor is divided into an upper reaction zone and a lower anaerobic zone by using a double-layer flow guide table, a flow distribution structure is additionally arranged in the lower anaerobic zone, sludge slides down from the top of a cylinder wall in a film shape to form a water curtain, sewage is jetted upwards from two sides of the bottom to form efficient countercurrent contact, phosphorus release and partial hydrolytic acidification are carried out, and the sludge is discharged. Treated sewage is conveyed upwards under the drainage effect of the double-layer flow guide table, water flow is evenly distributed upwards through the flow distribution guide mechanism, strong turbulent flow is generated, the hydraulic shear force on a biological membrane on the outer surface of the MABR membrane wire set is improved, stable formation and efficient cooperation of an aerobic zone (near membrane side) and an anoxic zone (far membrane side) are facilitated, and the synchronous nitrification and denitrification efficiency is improved.

The application relates to the sewage treatment technical field, and provides a magnetic multi-effect dual-parent hybrid particle as well as a preparation method and application thereof. The magnetic multi-effect dual-parent hybrid particle comprises a core-shell separated magnetic Fe3O4 particle core and a shell layer, the shell layer is a silica / titanium dioxide hybrid shell layer with a micro-pore structure, the outer surface of the shell layer comprises a hydrophilic part and a hydrophobic part, and the inner surface of the shell layer and the surface of the magnetic Fe3O4 particle core are grafted with poly (diethylaminoethyl methacrylate). The magnetic multi-effect dual-parent hybrid particle provided by the application has excellent emulsifying performance, can realize oil-water separation, can selectively adsorb partially hydrolyzed polyacrylamide, and can efficiently treat oil-containing sewage containing partially hydrolyzed polyacrylamide in one step.

To provide a room temperature-curable organopolysiloxane composition which can provide a silicone rubber cured product having self-repairing property.SOLUTION: A room temperature-curable organopolysiloxane composition comprises (A) 100 pts.mass of an organopolysiloxane represented by a formula (1), (in the formula, R1 is each independently a monovalent 1-10C hydrocarbon group, R2 is each independently a hydrogen atom or an unsubstituted or substituted monovalent 1-6C hydrocarbon group, a is an integer of 1-10, and b is an integer of 1-200, each of x and y is an integer of 1-50, and n is an integer of 1-10, in addition, each repeating unit shown in parentheses with x and y may be randomly arranged), (B) 0.1-40 pts.mass of a hydrolyzable organosilane compound having three or more hydrolyzable groups bonded to silicon atoms in a molecule and / or a partially hydrolyzed condensate thereof, and (C) 0.01-10 pts.mass of a curing catalyst.SELECTED DRAWING: None

The present invention relates to lipid compositions derived from insects. The intrinsic chemical / physical properties of insect derived lipids limit the possibilities for widespread and large-scale use. An enzymatic process for the partial hydrolysis and transesterification of insect extracted lipids is provided. The process alters the ratio of triglyceride (TAG), diglycerides (DAG), monoglycerides (MAG) and free fatty acids (FFA) of the crude insect lipid and also results in the transesterification of fatty acids on glyceride backbone yielding a lipid composition that combines an increased dispersibility in water, a more favourable hardness profile (as a function of temperature) and a melting point slightly above ambient temperature. The compositions of the invention further have good nutritive properties as well as some interesting functional properties, e.g. anti-microbial effects. The invention relates to these enzyme-modified lipid compositions, to the methods for producing them, as well as to their uses as an ingredient in an alimentary product.

A surface treatment agent comprising a fluoropolyether group-containing polymer represented by formula (1) and / or a partial (hydrolysis) condensate thereof can form a cured coating film having excellent water and oil repellency, steel wool wear resistance, and rubber wear resistance. (Rf is a monovalent or divalent fluoropolyether group, B is a single bond or a divalent organic group not containing F, E is a monovalent group having an oxyalkylene group, T is a single bond or a divalent organic group, U is a single bond, C, Si, N, or a 3-4-valent organic group, V is a single bond or a divalent organic group, Z is a single bond or a 3-8-valent organic group, Y is a divalent hydrocarbon group optionally having O, S, Si, or a siloxane bond, R is an alkyl group or a phenyl group, and X is a hydrogen atom or a hydrogen atom. X represents a hydroxyl group or a hydrolyzable group, n is 1-3, m is 1-7, beta is 1-3, and alpha is 1 or 2)

The invention discloses a cellulose dressing for a wound surface, and relates to the field of biomedical materials, the cellulose dressing comprises a three-dimensional network skeleton, the three-dimensional network skeleton is formed by mutual crosslinking of a plurality of skin-core structure fibers, and the skin-core structure fibers sequentially comprise a shell layer composed of hydrolyzed regenerated cellulose and a core layer from outside to inside in the radial direction of the fibers; the hydrolysis degree is greater than or equal to 95%, and the thickness is 2-6 microns; the gradient transition layer is composed of partially hydrolyzed cellulose acetate, and the hydrolysis degree is 60-80%; the inner core layer is composed of partially hydrolyzed cellulose acetate, the hydrolysis degree is 40-60%, and the diameter is 5-20 microns; through continuous change of the hydrolysis degree of the inner layer and the outer layer of the fiber, and meanwhile, the thickness of the outer layer and the diameter of the inner layer are controlled within the range of the invention, so that good mechanical integrity can still be achieved in a high-enzyme-concentration and high-humidity harsh environment of a wound surface, and structural stability is realized.

The invention discloses environment-friendly organic silicon resin and a preparation method thereof. The structural formula of the environment-friendly organic silicon resin is (R1SiO1.5) a (R2R3SiO) b (SiO2) cR4, wherein R1, R2 and R3 are at least one of cyclic hydrocarbon groups, chain hydrocarbon groups, aromatic hydrocarbon groups and hydrogen groups; r4 is an active group in the environment-friendly organic silicon resin and is alkoxy or hydroxyl; a, b and c represent the molar ratio of each chain link and are numbers which are less than 1, greater than or equal to 0 but not all 0, and a + b + c = 1. The invention also provides a preparation method of the environment-friendly organic silicon resin, and the preparation method comprises the following steps: carrying out partial hydrolysis reaction on alkoxy silane under the protection of alcohol, neutralizing, filtering, and carrying out catalytic polymerization under the protection of a solvent to finally obtain the environment-friendly organic silicon resin. According to the preparation method, acid water and acid gas which are difficult to treat cannot be generated in the process, corrosion to equipment is avoided, the process is relatively simple and environment-friendly, the reaction is easy to control, an environment-friendly solvent is selected, and harm to a human body is small.

The invention discloses an embolism microsphere with a fluorine-containing compound coating and a preparation method of the embolism microsphere. The embolism microsphere comprises a net-shaped structure formed by cross-linking polymerization of a vinyl ester monomer, a monomer containing a hydrophobic group, a cross-linking agent containing double bonds and a fluorine-containing compound, wherein the fluorine-containing compound is provided with a silicon-oxygen bond. According to the invention, a monomer containing a hydrophobic group is introduced as a comonomer, the hydrophobicity inside the microsphere is increased, so that the effective load of the embolization microsphere on a hydrophobic drug is greatly increased, and the acrylamide monomer containing hydroxyl can be connected with a fluorine-containing compound containing a silicon-oxygen bond through a chemical covalent bond after partial hydrolysis under an alkaline condition, so that the embolization effect is improved. Based on the hydrophobic and oleophobic characteristics of the fluorine-containing compound, the embolism microsphere has good dispersibility in an aqueous solution, and effective loading of drugs is further promoted.

The invention relates to the technical field of sewage treatment, and provides a magnetic multi-effect organic-inorganic hybrid amphiphilic particle as well as a preparation method and application thereof. The particle comprises a magnetic Fe3O4 particle inner core and a shell layer separated from the magnetic Fe3O4 particle inner core in a core-shell mode, the shell layer is a silicon dioxide / titanium dioxide hybrid shell layer with a micro-pore structure, the outer surface of the shell layer comprises a hydrophilic part and a hydrophobic part, the hydrophilic part has amino, and the amino is grafted with polydopamine; poly (diethylaminoethyl methacrylate) is grafted on the inner surface of the shell layer and the surface of the magnetic Fe3O4 particle core. The magnetic multi-effect organic-inorganic hybrid amphiphilic particle provided by the invention has excellent emulsifying performance and can realize oil-water separation; meanwhile, partial hydrolyzed polyacrylamide can be selectively adsorbed, and oily sewage containing partial hydrolyzed polyacrylamide can be efficiently treated in one step.

A millable silicone rubber compound including: (A) organopolysiloxane raw rubber; (B) reinforcing silica having a specific surface area of 50 to 450 m2 / g; (C) a partial hydrolysate of organoalkoxysilane represented by the following general formula (1); and (D) one or more kinds of condensation reaction catalysts selected from the following (D1) to (D3): (D1) an amine compound having a boiling point of 30 to 60° C. at 1013 hPa, the amine compound being in a liquid state at 25° C., (D2) hexaorganodisilazane represented by the following general formula (2), and (D3) ammonia water at 1.0 to 30.0 mass %. Thus, the invention provides: a millable silicone rubber compound that enable to achieve high plasticity regardless of relatively low hardness of the millable silicone rubber compound, a millable silicone rubber composition, and a method for producing a millable silicone rubber composition.

Provided is an organopolysiloxane prepolymer that can provide a cured article having excellent heat resistance and adhesion. An organopolysiloxane prepolymer according to an embodiment of the present invention is a condensation product of: (A) a polydimethylsiloxane having silanol groups at both terminals; (B) at least one substance selected from the group consisting of silane oligomers having an alkoxy group, complete or partial hydrolysates of said silane oligomers, and condensation products of said oligomers; (C) at least one substance selected from the group consisting of tetramethoxysilane and tetraethoxysilane; and (D) a silane compound having a phenyl group.

The present disclosure relates to a method of producing a relief precursor comprising a functionalized partially hydrolyzed polyvinyl acetate, the present in the melt of partially hydrolyzed polyvinyl acetate as component A with a reactive compound bearing at least one ethylenically unsaturated group and at least one reactive group reactive to hydroxyl or acetate groups as component B in the presence of at least one stabilizer as component C and optionally in the presence of a catalyst as component D The present invention relates to a process for the preparation of a mixture of components A, B, C and optionally D, comprising the steps of: a) optionally drying one or more of the components A, B, C and optionally D, b) optionally premixing two or more of the components A, B, C and optionally D, c) feeding said components into a mixing device capable of heating, melting and mixing the components A, B, C and optionally D, d) heating, melting and mixing the components A, B, C and optionally D in the device to produce a melt and reacting the components A and B in the melt, e) optionally cooling or shaping and cooling the resulting mixture.

Provided is an aqueous coating agent composition which contains the following components (A)-(F), and which is capable of obtaining a cured coating film having excellent adhesion to a base material, wear resistance and / or abnormal sound generation suppression performance. (A) is polyorganosiloxane containing hydroxyl groups at two terminals and / or branched chain type (partially crosslinked) polyorganosiloxane containing hydroxyl groups at the terminal; (B) elastomer particles having a volume average particle diameter of 0.1-80 [mu] m; (C) a trifunctional silane compound represented by general formula R1Si (OR2) 3 (in the formula, R1 represents a phenyl group, an alkenyl group, or an alkyl group having 1 or 2 carbon atoms, and R2 represents an unsubstituted monovalent hydrocarbon group that is the same or different) and / or a partial hydrolysis condensate thereof; (D) an amino group-containing alkoxysilane represented by general formula (R3O) 3-n (R4) nSiR5-NH-R6 (in the formula, R3 and R4 are the same or different unsubstituted monovalent hydrocarbon groups, n is 0 or 1, R5 is an unsubstituted divalent hydrocarbon group, and R6 is a hydrogen atom, a monovalent hydrocarbon group substituted by a halogen or cyano group, or an aminoalkyl group) and / or a partial hydrolysis condensate thereof; (E) water; and (F) a synthetic resin [excluding (A) and (B)].

The application discloses polyacrylonitrile primary fiber, polyacrylonitrile fiber and a preparation method and application thereof, and belongs to the technical field of high polymer materials and fiber manufacturing. A part of cyano groups on a molecular chain is converted into carboxylic acid salt by performing a partial hydrolysis reaction on polyacrylonitrile in a mixed system of an organic solvent and an inorganic alkali aqueous solution through ultrasonic assistance; the hydrolysis product is dissolved to prepare a spinning solution, and after jetting, in-situ acidification and coagulation and stretching in a coagulation bath containing a protonic acid, a polyacrylonitrile primary fiber containing a carboxyl group is obtained. After washing and stretching, the primary fiber is crosslinked and heat-drawn under high-temperature and negative-pressure conditions, so that the carboxyl groups between the molecular chains are dehydrated to form anhydride bonds, a three-dimensional network macromolecular structure is constructed, and a high-strength polyacrylonitrile fiber is obtained through relaxation and heat setting. The polyacrylonitrile fiber has a breaking strength greater than 9.0 cN / dtex, has the advantages of high strength, stable structure and strong controllability of process, and can be suitable for industrialized production of high-strength polyacrylonitrile fiber.

The present application relates to the technical fields of silicone functional emulsion preparation, in particular to a high solid content alkoxyl-containing silicone emulsion and a preparation method thereof, which is applied to water-based wood paint and plays a role of water resistance and stain resistance, and is composed of the following raw materials: 50-60 parts of silicone oligomer, 2-5 parts of surfactant, 3-6 parts of cosolvent, 0.1-0.5 parts of pH regulator and 40-50 parts of solvent; the silicone oligomer is a small molecule resin obtained by partial hydrolysis and condensation of alkyl trimethoxysilane. The emulsion prepared by the method has a theoretical solid content of at least 55%, a viscosity of 40-60 mPa·s / 25 DEG C, good and stable waterproof effect, and can be placed for more than one year at room temperature; the emulsion can be cured at medium and high temperatures and can be self-cured at room temperature, and the cured paint film has high hardness, good toughness and high bonding reliability.

The invention discloses irradiation modified amylose and application thereof in embedding lycopene microcapsules in the field of starch processing. The irradiation modified amylose is prepared by a preparation method comprising the following steps: dissolving amylose in deionized water, adjusting the pH value, heating, stirring, neutralizing, centrifugally washing, and drying in vacuum to obtain modified amylose; modified amylose is taken and dissolved in deionized water, the dispersion liquid is subjected to electron beam irradiation, and the electron beam irradiation is divided into a first stage with a low dosage rate and a second stage with a high dosage rate; and taking the dispersion liquid after electron beam irradiation, and carrying out centrifugal water washing and vacuum drying to obtain the product. The amylose is firstly subjected to mild acidolysis, so that a molecular chain is partially hydrolyzed, the polymerization degree is reduced, the solubility is improved, and irradiation is facilitated; meanwhile, a staged mode is adopted in the irradiation process, so that the molecular weight distribution of the starch is more concentrated, the film forming uniformity and compactness of the microcapsules are remarkably improved on the whole, and the stability of the capsules is further improved.

The present application relates to the technical field of oil and gas field development chemical flooding enhanced oil recovery, and particularly relates to a method for testing hydrolysis degree and anionic degree of partially hydrolyzed polyacrylamide containing AMPS. The method comprises the following steps: weighing the dry powder of partially hydrolyzed polyacrylamide containing AMPS, testing the solid content of the dry powder, multiplying the solid content of the dry powder by the mass of the dry powder to obtain the effective content of the dry powder; using an organic element analyzer to test the content of sulfur element in the dried dry powder, using the content of sulfur element to obtain the content of AMPSNa and the amount of substance of AMPS; using the potentiometric titration method to test and calculate the amount of substance of hydrolyzed carboxylate and the amount of substance of unhydrolyzed amide; and calculating the hydrolysis degree and the anionic degree of the partially hydrolyzed polyacrylamide containing AMPS. The present application can measure the hydrolysis degree and the anionic degree of the partially hydrolyzed polyacrylamide containing AMPS, and is of great significance for quality control of temperature-resistant and salt-resistant polymers and research and development of new polymers in high-temperature and high-salt reservoirs.

The invention relates to a curable composition, adhesive, sealant, and / or coating materials comprising said composition and methods of using said composition, wherein the curable composition comprises:I. organyloxy group containing organopolysiloxanes comprising(A) organopolysiloxane(s) containing organyloxy groups and consisting of units of the formula (I) and / or their partial hydrolysates,(B) organosilicon compound(s) of the formula (II)(C) organosilicon compound(s) containing basic nitrogen, of the formula (III) and / or their partial hydrolysates, andoptionally (D) organosilicon compound(s) of the formula (IV)and / or their partial hydrolysates,where R, R1, R2, a, b, c, R3, R4, d, R5, R6, e, R7, R8 and h are defined as stated in the specification,II. a first pigment,III. a second pigment,IV. optionally surface treated silica,V. surface treated calcium carbonate,VI. optionally a Cerium (III) additive,VII. optionally a tin catalyst.