114 results about "Organic solvent free" patented technology

The invention relates to a low-odor two-component composition as well as a preparation method and application thereof, and belongs to the technical field of woodware seal primers. The low-odor double-component composition disclosed by the invention comprises a component A and a component B, wherein the component A comprises epoxy resin and epoxy silane; in the component A, the weight of the epoxy silane accounts for 0-60 wt% of the total weight of the epoxy resin and the epoxy silane; the component B comprises an addition product, and the addition product is a Michael addition product obtained by reacting an unsaturated monomer M and amino silane Q according to a molar ratio of 1: (1.6-2.4). The low-odor two-component composition disclosed by the invention is extremely low in odor, very fast in early-stage polishing property establishment, good and excellent in surface effect and flexibility, free of an organic solvent or only low in organic solvent content, and capable of being widely applied to a woodware seal primer as a composition so as to improve the performance of a woodware coating.

The invention discloses an insulating heat-conducting material, a preparation method and application thereof, a radiator and a power component, and relates to the technical field of electronic products, the insulating heat-conducting material comprises the following components by weight: 80-95 parts of an insulating heat-conducting filler, 3-15 parts of an epoxy monomer, 1-5 parts of an active diluent, and 0.2-4 parts of a curing agent. According to the insulating and heat-conducting material, the epoxy monomer with low viscosity is selected to be matched with the reactive diluent, so that the overall viscosity of the material can be reduced, the dispersity of the insulating and heat-conducting filler is improved, and the phenomenon that the viscosity of a formed coating is too high is avoided. In addition, the insulating heat-conducting material does not contain an organic solvent, so that the problem of viscosity increase caused by volatilization of the organic solvent can be avoided in application. Therefore, an insulating heat-conducting coating formed by the insulating heat-conducting material has the service life of 15-20 years, and the service life of the coating can be remarkably prolonged.

The invention relates to an antiviral composition for nasal delivery comprising favipiravir dissolved in an aqueous solvent which comprises an aqueous buffer adjusted to a pH within a range of from pH 4 to pH 6, at least one saponin component selected from the group consisting of escin and glycyrrhizin at or above a critical micelle concentration, dexpanthenol at a concentration within a range of from 0.5 to 5 %wt, and favipiravir as an antiviral agent at a concentration of at least 5 or 6 or 8 or 10 mg / ml, wherein the composition is preferably free of an organic solvent. The invention further relates to said antiviral composition when used in the treatment of viral infections of the airways or the respiratory tract.

The invention discloses an environment-friendly waterborne polyurethane glove and a preparation method thereof. The environment-friendly waterborne polyurethane glove comprises a glove core and an environment-friendly waterborne polyurethane layer wrapping the surface layer of the glove core. The environment-friendly waterborne polyurethane layer is prepared from the following raw materials in parts by mass: 20 to 35 parts of isocyanate, 40 to 60 parts of bio-based polyol, 3 to 8 parts of a fluorine-containing chain extender, 0.5 to 3 parts of nano cellulose, 1 to 5 parts of an environment-friendly cross-linking agent, 0.3 to 1.5 parts of a nonionic emulsifier, 2 to 6 parts of an environment-friendly plasticizer, 0.1 to 0.5 part of a low-toxicity preservative and 15 to 30 parts of deionized water. The preparation method has the advantages that no organic solvent is contained, no VOCs are discharged in the production process, the green chemistry principle is met, and the overall strength and performance are higher.

The present invention discloses an underwater construction and underwater curing anti-corrosion coating. The coating comprises component A and component B. Component A contains, by weight, 65-85 parts of epoxy resin, 20-45 parts of MS polymer, 10-30 parts of diluent, and 10-25 parts of additives; component B contains 90-105 parts of modified phenalkamine underwater curing agent, 1-3 parts of curing accelerator, and 1-5 parts of organotin catalyst. The MS polymer and epoxy / modified phenalkamine can independently crosslink to form a toughened fully interpenetrating network. The anti-corrosion coating contains no organic solvents, does not segregate, turn white, or sag when exposed to water, has good tolerance for poorly treated surfaces, can be directly constructed and cured underwater, is simple and efficient to apply, and can form a film thickness of up to millimeters in one application. It is suitable for the long-term protection of large-scale marine engineering facilities.

The invention discloses a single-component low-viscosity glue-overflow-free epoxy resin electronic glue which is characterized by comprising the following components in parts by weight: 25-40 parts of epoxy resin, 0.5-2.5 parts of thermoplastic resin, 20-35 parts of a curing agent, 1-10 parts of an auxiliary agent, 15-40 parts of filler and 0.5-5 parts of an accelerant. According to the single-component low-viscosity glue-overflow-free epoxy resin electronic glue and the preparation method thereof provided by the invention, the thermoplastic resin is added into a system, so that the problems that a chip is polluted due to glue overflow in glue dispensing, wire drawing and heating curing processes, and the periphery of the chip is cracked due to large shrinkage rate after the overflowing glue is cured in a severe case can be effectively solved. Meanwhile, the system does not contain an organic solvent, volatile organic compounds are hardly released in the dispensing and curing processes, the problem of solvent residue is avoided, and the content of ion impurities is extremely low. The prepared epoxy resin electronic glue system has the advantages of low viscosity, no glue overflow after curing, no solvent addition and no VOC (volatile organic compound) addition.

The present invention provides a UV-curable composition containing a silicon atom, which has a cured product with a low refractive index and excellent workability when applied to a substrate. The UV-curable composition of the present invention is characterized by containing one or more organosilicon compounds (A) having an average of one or more UV-reactive functional groups per molecule, having a viscosity of the entire composition of 80 mPa-s or less as measured at 25°C using an E-type viscometer, and being free of an organic solvent, and having a cured product with a refractive index of 1.45 or less as measured at 25°C at a wavelength of 589 nm.

The present invention provides protein-polymer conjugates, and methods for generating biocompatible scaffolds formed of hydrogels comprising the conjugates and use of the scaffolds for tissue regeneration. The present invention provides improved processes for the preparation of the conjugates, wherein the conjugates of the invention are preferably produced in an environmentally friendly process avoiding polar organic solvents.

The invention discloses an underwater construction and underwater curing anticorrosive coating which comprises a component A and a component B. The component A comprises the following components in parts by mass: 65-85 parts of epoxy resin, 20-45 parts of an MS polymer, 10-30 parts of a diluent and 10-25 parts of an auxiliary agent; and the component B contains 90-105 parts of a modified phenolic aldehyde amine underwater curing agent, 1-3 parts of a curing accelerator and 1-5 parts of an organic tin catalyst. The MS polymer and the epoxy / modified phenolic aldehyde amine can be independently cross-linked to form a toughened full-interpenetrating network; the anticorrosive paint does not contain an organic solvent, is free of segregation, whitening and sagging when encountering water, has good tolerance to low-treatment surfaces, can be directly constructed underwater and cured underwater, is simple and efficient to apply, has the one-time film-forming thickness reaching the millimeter level, and is suitable for long-acting protection of large-scale maritime work facilities.

The invention discloses a porous aluminum oxide film for a nitrogen oxygen sensor, comprising a metal protective shell, a protective groove and a wire. The surface of the metal protective shell is provided with a protective groove, one side of the metal protective shell is fixedly connected with a wire, and the inside of the protective groove is fixedly connected with a porous aluminum oxide film for protecting the metal protective shell and internal equipment thereof. The porous aluminum oxide film for the nitrogen oxygen sensor will not enhance or weaken the nitrogen oxygen detection current by installing a porous aluminum oxide layer, and the current value will not be affected, thereby ensuring the accuracy of the nitrogen oxygen detector data, facilitating the full reaction of exhaust gas and the nitrogen oxygen detection sensor, being able to directly observe the use of internal instruments, being able to replace damaged instruments in time, and ensuring the normal use of the nitrogen oxygen detector. By installing an adhesive layer, the solvent-free glue used in the adhesive layer does not contain an organic solvent, is very environmentally friendly, will not cause harm to the user's body, and has a strong bonding force.

A preparation method of a waxy anticorrosive coating resistant to seawater corrosion relates to a preparation method of an anticorrosive coating, and comprises the following steps: firstly, adding an emulsifier into deionized water, stirring and mixing, adding cardanol polyol and methacrylic acid, and emulsifying to obtain a matrix emulsion; adding an initiator into water to obtain an initiator solution; under the protection of nitrogen atmosphere, dropwise adding the initiator solution into the matrix emulsion to obtain a water-soluble polymer; and uniformly stirring and mixing the water-soluble polymer, the water-based fine oxidized polyethylene wax emulsion and the metal aluminum powder filler to obtain the coating. The coating prepared by the invention has the effects of water resistance, rust resistance, wear resistance and the like, and can provide lasting protection for a matrix. Meanwhile, the coating does not contain an organic solvent, is environment-friendly, non-toxic and harmless, can be conveniently coated on various base materials, and is high in drying speed.

The present application claims a kind of deep-drawing and high-temperature-resistant block structure polyurethane adhesive for lithium ion battery packaging and its preparation method, the adhesive is prepared by uniformly mixing the following components by weight parts: 100 parts branched liquid rubber polyol-polyether-branched liquid rubber polyol polyurethane copolymer;3-5 parts high molecular weight ultraviolet light initiator;20-35 parts isocyanate end-capped high-temperature-resistant hydrolysis polyester polyol.Compared with the solvent-based polyurethane adhesive on the market at present, the adhesive of the present application does not contain organic solvent, has the advantages of non-toxic, safe to use, environment-friendly, etc., and its water resistance, yellowing resistance, deep-drawing resistance, high-temperature resistance and other properties are very outstanding after composite curing with the substrate, especially suitable for the special requirements of lithium ion battery aluminum-plastic composite packaging material.

To provide a method of preparing a water-based solution comprising transfection competent vesicles (TCVs), configured to safely and efficiently deliver DNA, RNA, other nucleic acid and protein cargoes into target cells; and to provide the water-based solution.SOLUTION: There is provided a water-based solution that contains empty lipid-based transfection competent vesicles (TCVs) lacking a cargo, (i) wherein the water-based solution is an acidic solution; (ii) wherein the water-based solution does not contain an organic solvent or a detergent; (iii) wherein the water-based solution does not contain a cargo; (iv) wherein the lipid-based TCV comprises an ionizable cationic lipid, one or more phospholipids, and cholesterol (Chol); (v) wherein the lipid-based TCV comprises 20 mol%-50 mol% of the ionizable cationic lipid; and (vi) wherein the lipid-based TCV does not contain a PEG-lipid.SELECTED DRAWING: None

The invention discloses an on-line separation and valuing method for free thyroxine in serum. The method comprises the following steps: (1) setting a two-dimensional liquid chromatogram; (2) on-line separation and removal of macromolecular interferents in the serum; (3) retaining free thyroid hormone; (4) on-line separation of free thyroid hormone; (5) on-line valuing by isotope dilution mass spectrometry; and (6) cleaning the two-dimensional liquid chromatography system. The method provided by the invention realizes on-line separation of free thyroid hormone in serum and absolute constant value. A first-dimensional chromatographic mobile phase is a mild ammonium salt buffer solution and does not contain an organic solvent, so that thyroid hormones combined with protein in serum can be kept in a combined state, and a target object entering mass spectrometry is free thyroid hormones; and the valuing result can be traced to the international unit system through the national certified standard substance. Compared with traditional serum off-line treatment modes such as solid-phase extraction and equilibrium dialysis, the method has the characteristics of high efficiency, reliability and easiness in operation.

The present application relates to a kind of chlorosulfonated polyethylene aqueous emulsion, the particle size of chlorosulfonated polyethylene in the aqueous emulsion is 200-500nm, solid content is 40-60%, emulsion potential is-37mV~ -60mV, 0-8% synthetic latex is also contained in emulsion and does not contain organic solvent;The synthetic latex is chloroprene latex emulsion, natural latex emulsion, nitrile latex emulsion, butyl latex emulsion, and butadiene-styrene latex emulsion one or several kinds.The present application also relates to the preparation method of the chlorosulfonated polyethylene aqueous emulsion, which can achieve the purpose of mixing chlorosulfonated polyethylene rubber liquid with water without hydrophilic modification of chlorosulfonated polyethylene resin, simplify the process flow, save the material cost of using modifier, and the prepared emulsion does not contain organic solvent, environmental protection is pollution-free, emulsion stability is high, storage period can reach 24-100 days, film-forming property (dense film) is good, after preparing glove and other dipping coating products, the density of glue layer is high, can guarantee that glove has good anti-permeation and anti-chemical performance.

A film with a hydrophobic water-insoluble dye embedded in polyvinyl alcohol (PVA) is disclosed. The dye is uniformly distributed throughout the film and the film has substantially no organic solvents. The film may be attached to the center of a contact lens. Such a contact lens may be used to correct or improve color vision for people with a color vision deficiency.

The invention discloses a water-based environment-friendly adhesive film and a preparation method thereof. The preparation method sequentially comprises the following steps: S1, preparing a water-based environment-friendly adhesive solution; s2, coating is conducted; s3, drying is conducted; and S4, cooling and cutting. By adopting the water-based acrylate adhesive and reasonably and optimally matching various raw materials, in the preparation process of the water-based environment-friendly glue solution, the generation of chemical reaction is reduced, the emission of pollutants such as waste gas and wastewater is reduced, the environmental pollution is reduced, and meanwhile, the water-based environment-friendly glue solution does not contain organic solvents, is non-toxic and odorless, and is non-combustible and non-explosive; the adhesive has good adhesive property, weather resistance and temperature resistance, also keeps good environmental protection performance, and meets the VOC standard of most vehicle enterprises; a traditional high-temperature and high-pressure forming mode is replaced with a coating and drying curing forming mode, energy consumption in production is reduced, meanwhile, the production efficiency is improved, the production period is shortened, and therefore the production cost is reduced.

The invention discloses a protective coating for anode plates of a sintered electrostatic precipitator system, which belongs to the technical field of metal corrosion protection. The protective coating is composed of a binder, a filler and an auxiliary agent; wherein the binder is a lithium silicate aqueous solution; the filler is copper powder, and the mass ratio of the filler to the binder is 1.5-2:1; the auxiliary agent is composed of an anti-settling aid and a conductive aid, the anti-settling aid is fumed silica and talcum powder, and the amount of fumed silica added is 2.5%-3% of the mass of the binder; the amount of talcum powder added is 1.2%-2% of the mass of the binder; the amount of conductive additive added is 3%-7% of the mass of the binder. The protective coating can form a protective coating with good anti-corrosion performance, heat resistance and conductivity on the surface of the anode plate; the coating does not contain organic solvents, heavy metals, free acids and other harmful substances, and has significant safety and environmental protection characteristics; it can effectively extend the service life of the sintered electrostatic precipitator anode plate.

The invention provides a method and formula tion for cleaning a soiled substrate, the method compris;.ig the treatment of the moistened substrate with a formulation comprising a multiplicity of polymeric particles, wherein the formulation is free of organic solvents. Preferably, the substrate is wetted so as to achieve a substrate to water ratio of between 1:0.1 to 1:5 w / w. Optionally, the formulation additionally comprises at least one cleaning material and, in this embodiment, it is preferred that the polymeric particles are coated with the at least one cleaning material. Preferably, the cleaning material comprises a. surfactant, which most preferably has detergent properties. Most preferably, the substrate comprises a textile fibre. Typically, the polymeric particles comprise particles of most preferably in the form of nylon chips. The results obtained are very much in line with those observed when carrying out conventional dry cleaning processes and the method provides the significant advantage that the use of solvents, with all the attendant drawbacks in terms of cost and environmental considerations, can be avoided

A method for producing a cellulose nanofiber capsule according to the present invention includes forming a Pickering emulsion by irradiating a mixture containing cellulose nanofibers, water, and fluid carbon dioxide with ultrasonic waves in a closed container; and facilitating encapsulation using cellulose nanofibers from the Pickering emulsion by opening the closed container. The present invention enables encapsulation using the cellulose nanofibers from a Pickering emulsion that does not contain an organic solvent, for example, and is useful in the technical fields of pharmaceutical agents, foods, and cosmetics, for example.

Provided is a polyester-based adhesive which can contribute to the reduction of environmental burden and which has excellent coatability. A polyester adhesive according to one embodiment of the present invention contains a polyester resin and a surfactant, the weight-average molecular weight of the polyester resin being 0.2 * 104 to 2.0 * 104, and the viscosity of the polyester adhesive being 1 Pa.s to 50 Pa.s. The polyester-based adhesive can substantially contain no organic solvent.

The present application relates to a kind of two-component composition and its preparation method and application, belong to wood sealing primer technical field.The two-component composition described in the present application, include component A and component B;Wherein: the component A includes epoxy resin a1 and epoxy silane;In the component A, the weight of the epoxy silane accounts for 18-80wt% of the total weight of the epoxy resin a1 and the epoxy silane;The component B includes adduct and aminosilane;In the component B, the weight of the adduct accounts for 10-80wt% of the total weight of the adduct and the aminosilane.The two-component composition of the present application is low in odor, hardness is established and early polishing is established very fast, pot life is extremely excellent, simultaneously with excellent surface effect, flexibility, does not contain organic solvent or only has low content of organic solvent, can be widely applied as composition in wood sealing primer, to improve the performance of wood coating.

The present application relates to a raw material for producing a two-component hybrid polyurea resin composition, the raw material being characterized by containing a component (A) containing a polyisocyanate compound (a) and a component (B) containing an aromatic polyamine compound (b), the component (A) containing a polyisocyanate compound (a) and the component (B) containing an aromatic polyamine compound (b), and the aromatic polyamine compound (b) containing an aromatic polyamine compound (b) being contained in the component (A) and the component (B) immediately after the component (A) and the component (B) are mixed together. And the usable time for which the viscosity value measured without containing an organic solvent is up to two times is 10 minutes or more.

An organoboron covalent organic network impregnated with at least one salt selected from alkali metal salts and alkaline-earth metal salts. The impregnated organoboron covalent organic network is substantially free of organic solvent. A method for preparing an impregnated organoboron covalent organic network, the use thereof as a solid electrolyte in an all-solid-state battery, and a separator for an all-solid-state battery, an electrode for an all-solid-state battery and an all-solid-state battery comprising such an impregnated organoboron covalent organic network.

Provided is a polyester-based adhesive which can contribute to the reduction of environmental burden and which has excellent coatability. A polyester adhesive according to one embodiment of the present invention contains a polyester resin, a crosslinking agent, and inorganic particles, wherein the weight-average molecular weight of the polyester resin is 0.2 * 104 to 2.0 * 104. The polyester-based adhesive can substantially contain no organic solvent.

An organosiloxane mixture containing hydrolyzable groups, which is based on a specific molecular structure of an organotrisiloxane compound having at least one unsubstituted, halogen-substituted or alkyl-substituted phenyl group in the molecule and at least 4 hydrolyzable groups at both ends of the molecular chain, and an organodisiloxane compound having at least 2 unsubstituted, halogen-substituted or alkyl-substituted phenyl groups on the same silicon atom in the molecule and at least 2 hydrolyzable groups on the other same silicon atom in the molecule, and used in a specific compounding ratio, is used as the main component. The condensation reaction curable organosilicon coating agent composition containing a curing catalyst has excellent storage stability even without an organic solvent, cures rapidly at room temperature after being coated on a substrate, and can form a cured film with excellent transparency, adhesion, etc., excellent followability to bending of the substrate, and having substrate corrosion prevention properties.

This invention relates to the field of ink technology, and in particular to a water-based alkyd resin binder for engraving gravure ink, its preparation method, and its application. It is prepared from components comprising the following weight percentages: 5-40% vegetable oil fatty acids, 5-40% polybasic acids, 5-40% polyols, 0.01-1% catalyst, 1-30% tackifier, 1-20% acid anhydride, 1-15% alkaline neutralizer, and 1-15% water. The water-based alkyd resin binder for engraving gravure ink of this invention does not contain organic solvents. The organic solvent content of the engraving gravure ink prepared using this binder can be reduced by more than 30%. During the ink printing process, the ink has high viscosity and good transfer properties. Alkaline substances and surfactants can be eliminated from the wiping solution; clean water can be used directly for wiping, greatly reducing the difficulty and cost of waste liquid post-treatment.

To provide an active ray-curable composition and an active ray-curable ink composition which contain no organic solvent, have excellent transparency and adhesiveness of a coating film and a method for producing them.SOLUTION: Provided is an active ray-curable composition which comprises (I) a vinyl chloride-based copolymer and (II) a photocurable monomer and / or an oligomer, wherein the vinyl chloride-based copolymer contains, as a structural unit, (a) 82 to 95 mass% of a unit derived from vinyl chloride, (b) 0.1 to 5 mass% of a unit derived from vinyl acetate and (c) 4 to 15 mass% of a hydroxyl group-containing vinyl-derived unit based on the mass of the vinyl chloride-based copolymer and comprises no organic solvent.SELECTED DRAWING: None

The invention relates to a preparation method and application of dencichine, and belongs to the field of Chinese herbal medicine extraction and separation. The method comprises the following specific steps: taking pseudo-ginseng, pseudo-ginseng flowers, pseudo-ginseng stems and leaves, a whole pseudo-ginseng plant, decoction dregs after notoginsenoside extraction, rhizoma panacis majoris and American ginseng as raw materials, performing coarse crushing or direct feeding, performing water extraction, concentrating an extracting solution, performing centrifugation, enabling centrifugate to pass through an ultrafiltration membrane, concentrating a membrane-passing solution, purifying a concentrated solution through cation exchange resin, collecting a dencichine-containing segment, and performing freeze drying to obtain the pseudo-ginseng extract. And concentrating and drying to obtain dencichine. And selecting an ultrafiltration membrane to remove impurities and enrich dencichine. And purifying the dencichine by selecting ion exchange resin to obtain the dencichine with the content of more than 95%. The method has the advantages that the operation steps are simple and easy to repeat, the conditions are easy to control, the preparation amount is easy to amplify, the separation material can be repeatedly used, the environmental pollution is small, the obtained final product does not contain organic solvent residues, and the content can reach 95% or above.

The invention relates to a molten salt lithium battery, which comprises a positive electrode and a molten salt electrolyte, the positive electrode is Sb, Bi, Sn, Pb, and carbon coated Sb, Sb-Bi alloy or Sb-Sn alloy, and the molten salt electrolyte comprises LiFSA and KFSA. According to the molten salt lithium battery, the molten salt electrolyte is adopted, no organic solvent is contained, the problems of oxygenolysis of the organic solvent under high voltage and reductive decomposition of the organic solvent under low voltage are solved, the molten salt electrolyte and the positive electrode material have very good compatibility, and it is guaranteed that the constructed molten salt lithium battery has excellent electrochemical performance; the advantages of high capacity, high voltage, high efficiency, long cycle life and the like are realized. Due to the advantages, the molten salt lithium battery has a wide application prospect in the fields of large-scale energy storage and the like.