26 results about "Partial hydrolysis" patented technology

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.

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 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 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.

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 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.

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.

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 application provides a polymer-based composite material containing a multistage MOFs stress dissipation layer and a preparation method and application thereof, and belongs to the technical field of lubricating materials.The application mixes nanocellulose, MXene, Ni-BDC and water, carries out a self-assembly reaction under the condition of standing, and obtains a first mixed slurry; ZIF-8 nanoparticles, a PVA aqueous solution and the first mixed slurry are mixed, a partial hydrolysis reaction is carried out under the condition of stirring, and a second mixed slurry is obtained; the second mixed slurry is placed in a mold for drying treatment, and a polymer-based composite material containing a multistage MOFs stress dissipation layer is obtained.The application can introduce the MOFs materials of MXene and Ni-BDC and ZIF-8 into a polymer matrix, and significantly improve the friction-reducing and wear-resisting performance, toughness and durability of the composite material by constructing a multistage friction stress dissipation layer.

A room-temperature-curable organopolysiloxane composition comprising (A) an organopolysiloxane resin which contains silanol groups in a specified amount and has a specified molecular weight and a specified three-dimensional net-like structure, (B) a hydrolyzable organosilane compound containing an organooxymethyl group and / or a partial hydrolysis-condensation product thereof, (C) a linear diorganopolysiloxane of which each molecule chain terminal is capped with a silanol group, and (D) a hydrolyzable organosilane containing an amino group and / or a partial hydrolysis-condensation product thereof at specified content ratios can be produced easily and at low cost, and can be formed into a high-hardness cured article or coating film even when a metal compound that can serve as a condensation catalyst is not contained.

The present invention relates to a process for continuous production of polyethylene terephthalate (PET), preferably recycled PET (rPET), in a plant comprising a first group of at least one reactor, a second group of at least one reactor, a third group of at least one reactor, and a final reactor, wherein a reactant material B) comprising melted bis(2-hydroxyethyl) terephthalate (BHET); and a reactant material C) comprising isophthalic acid (IPA), preferably in form of a paste (IPA paste), are used; wherein the second group of at least one reactor, the first group of at least one reactor, the third group of at least one reactor, and the final reactor are connected in series in this order, the process comprising i-c) subjecting a mixture of the reactant material B), water and the reactant material C) to a hydrolysis reaction in the second group of at least one reactor to form a fully or partially hydrolysed reaction material stream; ii-c) subjecting the fully or partially hydrolysed reaction material stream to further reaction in the first group of at least one reactor including esterification reaction to form a reaction material stream C); iii-c) pre-polycondensing of the reaction material stream C) in the third group of at least one reactor to form a pre-polycondensed reaction material stream; and iv-c) final polycondensing of the pre-polycondensed reaction material stream in the final reactor to form PET.

This invention discloses a bio-organic fertilizer, its preparation method, and its application, belonging to the field of bio-organic fertilizer technology. The invention separates dead silkworms and / or silkworm moths into two parts. The first part undergoes preservation, sterilization, and modification treatments, causing partial hydrolysis of proteins into small peptides and free amino acids, and degradation of chitin into chitosan oligosaccharides, yielding modified silkworm body material. The second part undergoes carbonization treatment to obtain silkworm biochar. The modified silkworm body material, silkworm biochar, and silkworm excrement are compounded in a weight ratio of (10-40):(10-40):(50-80), inoculated with a compound microbial agent, and subjected to aerobic fermentation to obtain the bio-organic fertilizer. This invention achieves the synergistic utilization of dead silkworms, silkworm moths, and silkworm excrement for the first time, overcoming the technical prejudice that dead silkworms "can only be discarded." The product has a total nitrogen content of 5%-7%, possessing both a readily available nitrogen source and the plant immune-inducing function of chitosan oligosaccharides, realizing the complete closed-loop utilization of silkworm breeding waste. This invention can be widely applied to the planting of mulberry trees, rice, rapeseed, corn, wheat, sugarcane, beans, and other cash crops.

The present disclosure disclosed a method for preparing a PHGG sample and a composition containing the PHGG sample. The method may include performing enzymatic hydrolysis on a guar gum sample using a β-mannanase to obtain a reaction mixture. The method may also include processing the reaction mixture to obtain the PHGG sample. The PHGG sample may include a plurality of polysaccharides, and more than 70% by weight of the plurality of polysaccharides may have molecular weights higher than 5,000 Daltons. The PHGG sample includes one or more oligosaccharides that have degrees of polymerization (DP) less than or equal to 10, and in the PHGG sample, a mass concentration of the one or more oligosaccharides having DP less than or equal to 10 is less than 3%.

The invention relates to the technical field of diglyceride preparation, in particular to a preparation method of diglyceride with a uric acid reducing effect. Comprising the following steps: (1) vegetable oil is partially hydrolyzed with a complex enzyme composed of lipase and cutinase, a hydrolysate is obtained after dehydration, and the content of free fatty acid in the hydrolysate is 37.0 wt%-46.0 wt%; and (2) adding glycerol and lipase into the hydrolysate obtained in the step (1) to react, adding water to remove excessive glycerol, standing for layering, collecting supernatant, and carrying out distillation separation to obtain the edible diglyceride. The content of diglyceride in the final product reaches 80% or above by strictly controlling enzyme composition and free fatty acid in the hydrolysis and esterification processes, the reaction process is carried out according to the hydrolysis and esterification sequence, the process steps are simple, no organic solvent is used in the whole reaction process, green and environment-friendly effects are achieved, and the obtained diglyceride has a remarkable uric acid reducing effect.

Described is a biological material comprising (a) a collagen composition comprising (i) partially hydrolyzed collagen and (ii) collagen and / or fully hydrolyzed collagen, (b) a polymer, and (c) an additive selected from the group consisting of anti-hydrolysis agents, blowing agents, thickeners, fillers, and flame retardants. The biomaterial may be used to produce a processed biomaterial, which may be a leather-like material.

The present invention provides an epoxy resin composition which has excellent storage stability and cured product properties although the epoxy resin composition can be cured at a low temperature in a short time. The epoxy resin composition comprises (A) an epoxy resin that has two or more epoxy groups in each molecule, (B) an aromatic amine curing agent, (C) a gallium chelate compound, and (D) one or more organosilicon compounds that are selected from among silane compounds represented by formula (1) (wherein R1 represents an alkyl group having 1 to 4 carbon atoms, and n represents an integer of 1 to 3) and partial hydrolysis products thereof. The mass ratio (C) / (D) of the component (C) to the component (D) is 1 / 1 to 1 / 30.

Provided is an article which can be surface-treated with a surface treatment agent containing a fluorine-containing polyether-based polymer having a silanol group and / or a hydrolyzable silyl group and / or a partial (hydrolyzed) condensate thereof, said surface treatment agent being capable of forming a cured coating film having excellent water and oil repellency, wear resistance, and droplet slipping properties. The article has, on the surface thereof, a cured product of a surface treatment agent containing a polymer containing a fluorine-containing polyether group and / or a partial (hydrolysis) condensate thereof, the fluorine-containing polyether group polymer is a polymer having three silanol groups or hydrolyzable silyl groups bonded to a hydrocarbon group having a linear siloxane bond at one end in a molecule.

The present application relates to collagen peptide production technical field, especially a kind of cattle bone collagen peptide production equipment, including shell, the inside rotation of the shell is connected with stirring shaft, the surface of the rotating shaft is fixed with stirring vane, further include: partition, the partition is arranged in the middle part of shell, the partition is divided into upper chamber and lower chamber in shell, the partition is opened in and is used to communicate the communicating groove of upper chamber and lower chamber;The present application is separated by setting partition in shell, the production space is separated, in mixing process, the cattle bone powder of density is quickly settled due to gravity, so that the cattle bone powder of density is hydrolyzed in lower space;The cattle bone powder of small density in upper chamber continues to react in original environment, avoid the problem that part hydrolysis is excessive, part hydrolysis is insufficient due to mixed together, it is favorable to the finished product quality of stable collagen peptide.

The invention discloses a novel cross-linking agent and a formation fluid diversion system, and relates to the technical field of oilfield chemistry. A preparation method of the novel cross-linking agent comprises the following steps: adding chloromethyl polystyrene microspheres and phenol into dichloroethane, stirring at room temperature, adding a catalyst, fully stirring, heating, carrying out reflux reaction, cooling, filtering, and drying to obtain the novel cross-linking agent. Washing with a 1% hydrochloric acid solution and absolute ethyl alcohol respectively, drying to obtain phenolic hydroxyl modified chloromethylated polystyrene microspheres, and finally dispersing the phenolic hydroxyl modified chloromethylated polystyrene microspheres in a surfactant solution; the preparation method of the formation fluid diverting system comprises the following steps: adding a novel cross-linking agent and urotropine into a partially hydrolyzed polyacrylamide aqueous solution, and uniformly mixing to obtain the novel fluid diverting system. Compared with other conventional fluid diverting systems, the formation fluid diverting system containing the novel cross-linking agent has higher gel strength and better long-term stability.