57 results about "Cyanoacrylate" patented technology

The invention relates to the related technical field of dispergators, in particular to a compound dispergator for ceramic cultural relics and a preparation method of the compound dispergator for the ceramic cultural relics, and the compound dispergator for the ceramic cultural relics is composed of a main solvent I, a main solvent II, a penetration enhancer, a pH buffering agent, a thickening agent and a surfactant, wherein the main solvent I is 40-70 parts, the main solvent II is 5-10 parts, the penetration enhancer is 5-15 parts, the pH buffering agent is 0.5-2 parts, the thickening agent is 0.5-2 parts, and the surfactant is 1-4 parts. The special dispergator for the ceramic cultural relics and the preparation method of the special dispergator have the following remarkable advantages of high efficiency and broad spectrum: through compounding of the two main solvents and the penetration enhancer (NMP), a synergistic effect is formed, various stubborn adhesives from cyanoacrylate to cross-linked epoxy resin and the like can be effectively treated, the removal efficiency is high, and the action time is short. The preparation method has the advantages of simple process, excellent safety, controllable operability and environmental friendliness, the whole preparation process is carried out at normal temperature and normal pressure, no special equipment is needed, the process is simple, the reproducibility is good, and standardized production is easy to realize.

The invention relates to the technical field of biological materials, and provides an absorbable self-repairing suture line for maintaining the stability of a mechanical biological microenvironment and a preparation method of the absorbable self-repairing suture line. According to the suture line, an absorbable high polymer material is adopted as a matrix, and PLA microcapsules containing a medical-grade cyanoacrylate n-octyl ester repairing agent are uniformly dispersed in the matrix through a melt blending spinning process. When the suture line generates microcracks at dynamic tissue parts such as cardiovascular and digestive tracts due to periodic stress, the stress at the tip of the cracks enables the microcapsules to be broken to release the repairing agent, rapid in-situ polymerization occurs under triggering of tissue fluid, the self-repairing efficiency of 90% or above is achieved, and the strength retention rate of 95% or above is maintained in the key rehabilitation period of the suture line. The defect that a traditional absorbable suture line is prone to fatigue fracture in a dynamic environment is overcome, the mechanical integrity is actively maintained through an intelligent self-repairing mechanism, all components can be completely degraded and absorbed, and a safer and more reliable solution is provided for dynamic tissue repairing.

The present application provides a low odor / low whitening structure instant adhesive and a preparation method thereof. The low odor / low whitening structure instant adhesive comprises 70-90 wt% of cyano acrylate, 3-20 wt% of acrylic acid copolymer, 1-13 wt% of fumed silica, 0.2-2 wt% of plasticizer, 0.1-1 wt% of carbon black and 0-0.05 wt% of additive in terms of mass fraction. The present application selects ultra-high purity monomers in the environment of low polymerization inhibitor, which can significantly shorten the polymerization induction period, so that the monomer can be instantaneously initiated and completely cured after contacting the surface of the substrate, thereby minimizing the release of volatile monomers into the environment, further reducing the gaseous monomer that causes respiratory tract / mucosa irritation from the source, and inhibiting the polymerization of volatile monomers in the air to form white powder.

The present invention relates to a curable composition comprising:-a treated (meth) acrylate obtained by a process comprising a step of treating the (meth) acrylate with a clay wherein the clay is an acid-activated montmorillonite; and-a cyanoacrylate ester.

The invention provides an electrolyte suitable for a silicon-based negative electrode material, a lithium ion battery containing the electrolyte and an electronic device. The electrolyte suitable for the silicon-based negative electrode material comprises an electrolyte additive, a metal salt and a non-aqueous solvent, wherein the electrolyte additive comprises a basic additive and a functional additive; the functional additive comprises a combination of at least two of an oxide material, a thiocarbonate compound or a cyanoacrylate compound, so that the electrochemical performance and the safety performance of the lithium ion battery under high-temperature and low-temperature conditions are effectively improved.

This invention relates to cyanoacrylate-containing compositions that include, in addition to the cyanoacrylate component, a benzodioxol free radical stabilizer. The inventive cyanoacrylate compositions demonstrate improved shelf life stability while maintaining the level of adhesive performance.

This invention belongs to the field of polymer-based solid-state battery technology, specifically disclosing a method for preparing a precursor solution and a gel polymer electrolyte, and their applications. The precursor solution includes a liquid monomer and an electrolyte salt dissolved in the liquid monomer, wherein: the monomer is one or more of the following: cyclic ether, cyclic carbonate, acrylamide and acrylamide derivatives containing functional groups, acrylate and acrylate oligomers containing double bonds on one side, acrylonitrile and acrylonitrile derivatives containing functional groups, cyanoacrylate and cyanoacrylate derivatives containing functional groups; the electrolyte salt is a lithium salt, potassium salt, or sodium salt. This invention utilizes electron beam irradiation to initiate the polymerization of the precursor solution inside the battery to prepare a gel polymer electrolyte or polymer-based battery, avoiding the adverse effects of using initiators on battery performance, while effectively improving the contact performance of the electrode-electrolyte interface. This preparation method is simple and efficient, and is conducive to large-scale production.

The application discloses a preparation method of an implantable cyanoacrylate medical adhesive and application thereof, and belongs to the technical field of medical polymer material purification, and aims to solve the technical problems of easy monomer polymerization caused by high temperature, poor selectivity of impurity removal, excessive solvent residue, substandard biocompatibility, waste of by-products, poor batch stability and difficulty in realizing implant-grade purity in the existing cyanoacrylate medical adhesive purification process. The method comprises the following steps: low-temperature supercritical gradient extraction, selective adsorption refining, membrane separation impurity removal, by-product resource modification and finished product preparation. The low-temperature purification process below 40 DEG C is adopted throughout the application, the traditional high-temperature distillation and recrystallization process is abandoned, the self-polymerization of cyanoacrylate monomers caused by heat is avoided from the root, the effective monomer content of the finished product is ensured to be stable, the curing performance is uniform, the problem of high-temperature damage to the stability of monomers in the existing process is solved, the risk of high-temperature polymerization is eliminated, and the stability of the medical adhesive is greatly improved.

The application discloses a 2-cyanoacrylate compound represented by a general formula (I): each substituent is shown in the specification. The application also discloses a preparation method and application of the 2-cyanoacrylate compound. The 2-cyanoacrylate compound is suitable for inhibiting mycotoxins and preventing diseases caused by pollution fungi.

A method of applying a cosmetic article. The method includes applying an adhesive composition to at least one of a keratin-containing substrate and a cosmetic article. The method includes positioning the other of the keratin-containing substrate and cosmetic article in direct contact with the adhesive composition such that the keratin-containing substrate and cosmetic article are attached to one another through the adhesive composition. The adhesive composition includes a cyanoacrylate composition, and from 0.05 % to five % by weight an additive composition comprising at least one substituted catechol group, based on the total weight of the adhesive composition.

The present invention relates, inter alia, to a method for producing a microbubble, comprising (i) providing a polymerizable monomer and a non-polymerizable compound; and (ii) polymerizing the monomer in an aqueous solvent in the presence of the non-polymerizable compound to form a polymeric shell encapsulating an inner lumen; wherein the polymerizable monomer is selected from the group consisting of alkyl cyanoacrylates, alkyl acrylates, lactide, glycolide, and combinations thereof; and the non-polymerizable compound is capable of integrating into the polymeric shell as the polymerization proceeds so as to form a plurality of non-polymerized nanocavities.

The present application relates to a medical adhesive and a preparation method therefor. Starting materials for preparing the medical adhesive comprise the following in parts by mass: 60-90 parts of cyanoacrylate, 5-30 parts of a plasticizer, 0-7 parts of acrylate rubber, 0.05-0.08 parts of polyoxyethylene hydrogenated castor oil, and 0.02-0.04 parts of hydroquinone.

The invention discloses an n-butyl cyanoacrylate flexible adhesive and a preparation method thereof. The flexible adhesive is prepared from the following raw materials in parts by weight: 80 to 90 parts of alpha-cyanoacrylate, 0.004 to 0.03 part of a polymerization inhibitor, 0.1 to 0.3 part of an accelerator, 3 to 10 parts of a thickening agent, 0.1 to 0.6 part of an antioxidant and 0.5 to 4.5 parts of a thixotropic agent. The invention provides an n-butyl cyanoacrylate flexible adhesive and a preparation method thereof. The flexible adhesive is convenient to use and still keeps certain elasticity after being cured; and the preparation steps are simple and the cost is low.

The invention relates to the field of glue preparation, in particular to high-toughness quick-drying glue and a preparation method thereof, and the high-toughness quick-drying glue comprises the following components in parts by weight: 50-70 parts of cyanoacrylate; 10 to 20 parts of modified epoxy resin; 5 to 15 parts of a toughening agent; 2-5 parts of a curing accelerator; 0.1-1 part of a stabilizer; and 3-8 parts of a filler. Compared with the prior art, the invention has the following beneficial effects: cyanoacrylate and modified epoxy resin are adopted, a molecular interpenetrating network structure is constructed according to a unique ratio, the flexibilizer is added, so that the quick-drying adhesive shows excellent toughness, and tests show that the quick-drying adhesive can bear impact strength of more than 15J / cm < 2 > in a temperature interval of-20 DEG C to 80 DEG C, so that the quick-drying adhesive can be widely applied to the field of adhesive materials. The external force such as mechanical vibration, thermal expansion and cold contraction can be effectively resisted, and the problems of cracking, falling off and the like of a bonding part are fundamentally avoided.

The invention discloses a carbon-coated copper foil with high electrolyte corrosion resistance as well as a preparation method and application of the carbon-coated copper foil, and belongs to the technical field of lithium ion batteries. The carbon-coated copper foil comprises a copper foil base material and a carbon coating layer formed on at least one surface of the copper foil base material, and the carbon coating layer comprises the following raw materials by 100% of total dry weight of the carbon coating layer: 80-95 wt% of a conductive carbon material; 3 wt% to 15 wt% of a binder; 2 wt% to 10 wt% of an electrolyte-resistant additive; wherein the electrolyte-resistant additive is selected from at least one of a cyanoacrylate polymer, a polyvinylidene fluoride-hexafluoropropylene copolymer, fluorine-containing polyurethane and cyano modified polyacrylate. According to the invention, the interface bonding force and conductive stability of the carbon coating in the electrolyte are improved through the specific additive, the problems of sudden drop of peel strength and increase of resistance of the traditional carbon-coated copper foil after long-term soaking are solved, and the carbon-coated copper foil is especially suitable for lithium ion batteries with high voltage, high magnification and long service life requirements.

Described herein are polymerizable compositions useful as surgical adhesives, where the compositions include at least one antimicrobial agent dissolved in a cyanoacrylate monomer, where the at least one antimicrobial agent includes a cinnamon derivative comprising at least one of cinnamaldehyde, a cinnamic ester, a cinnamon essential oil, and where the at least one antimicrobial agent optionally further includes triclosan or a derivative thereof and / or povidone iodine. The antimicrobial agent is soluble in and compatible with the cyanoacrylate monomer.

The application belongs to the technical field of medical devices, and particularly relates to an adhesive for treating varicose great saphenous vein and a preparation method thereof. The adhesive is obtained by the following steps: (1) preparation of poly cyanoacrylate powder; (2) preparation of the adhesive: 50-85 parts of cyanoacrylate, 5-30 parts of plasticizer, 0.01-0.5 parts of polymerization inhibitor and 0.01-0.5 parts of antioxidant are uniformly stirred, 10-30 parts of poly cyanoacrylate powder is slowly added, and stirring is continued until complete dissolution and filtration, and the adhesive is obtained. The prepared adhesive has a weight average molecular weight of 0.5-10 million, a viscosity of 500-3000 cp, low formaldehyde content, is not diluted by blood when implanted into a blood vessel, does not flow with blood, reduces the risk of ectopic embolism, reduces the risk of allergy and inflammation, and the adhesive has a curing time of less than 20 s, can quickly polymerize and form a clot to block the blood vessel when implanted into the target vein position.

This invention relates to cyanoacrylate-containing compositions, which when cured provide improved bonding performance on aluminum substrates.

An assembly and a method for applying a medical device onto a soft tissue of a mammal. The assembly comprises a medical or analytical device having a surface configured for contacting the tissue, the surface further being configured for receiving liquid polymerizable adhesive thereon for adhering the assembly onto the fibrous envelope of the tissue. Liquid polymerizable adhesives, with cyanoacrylate functionalities, will greatly facilitate fastening of the medical device to the soft tissue and will remove the need for use of mechanical fastening means, such as sutures.

The invention belongs to the technical field of grouting materials, and particularly relates to an intelligent self-sensing and self-repairing sleeve grouting material as well as a preparation method and an application method thereof. The grouting material comprises the following components in parts by weight: a basic cementing material system: 100 parts of P.O52.5 Portland cement, 8-12 parts of sulphoaluminate cement, 15-25 parts of superfine slag powder and 8-12 parts of nano silica fume; the intelligent sensing component system is prepared from 0.8 to 1.5 parts of carboxyl functionalized multi-walled carbon nanotubes, 0.3 to 0.6 part of graphene oxide hydrosol and 0.05 to 0.1 part of a polyacrylamide dispersing agent; the self-repairing component system comprises the following components in parts by weight: 8-12 parts of epoxy resin microcapsules, 3-5 parts of cyanoacrylate microcapsules, 0.01-0.05 part of microbial spores and 0.5-1.0 part of a microbial nutrient solution; the aggregate system comprises the following components in parts by weight: 150-180 parts of quartz sand of 20-40 meshes, 120-150 parts of quartz sand of 40-80 meshes and 50-80 parts of quartz sand of 80-120 meshes; the additive system comprises 3.5 to 4.5 parts of polycarboxylic acid water reducing agent, 10 to 15 parts of UEA expanding agent, 1.2 to 2.0 parts of lithium carbonate early strength agent, 0.5 to 1.2 parts of sodium gluconate retarder, 0.3 to 0.6 part of nano TiO2 photocatalyst and 0.2 to 0.4 part of organic silicon defoaming agent. The invention provides an intelligent self-sensing and self-repairing sleeve grouting material as well as a preparation method and an application method thereof.

A composite resin particle comprising a dye and a resin selected from the group consisting of poly(amino acids), polyphosphazenes, polysaccharide derivatives, poly(esters), poly(ortho esters), poly(cyano-acrylates) and copolymers thereof, characterized in that the composite resin particle has an absorption maximum in a range from 600 nm to 750 nm and that the average particle size of the particles is between 0.03 μm and 3 μm. The composite resin particles are suitable for opto-medical applications such as phototherapies including photothermal therapy (PTT), photodynamic therapy (PDT), chemo-photodynamic nanotherapeutics and fluorescence medical imaging.

In order to solve the safety problem of a lithium ion battery in the prior art, especially thermal runaway of the battery at high temperature, the invention provides a gel electrolyte precursor and a gel electrolyte formed by the precursor, the precursor comprises monomers, a cross-linking agent, an initiator and an electrolyte, the monomers comprise a first monomer and a second monomer, and the cross-linking agent comprises a cross-linking agent, an initiator and an electrolyte. The first monomer is pentaerythritol triacrylate and / or pentaerythritol tetraacrylate, the second monomer is ethylene glycol bis (2-cyanoacrylate) and / or phenyl 1, 3, 5-triacrylate, and the mass content of the first monomer in the gel electrolyte precursor is greater than that of the second monomer in the gel electrolyte precursor. Under the combined action of the two monomers, the cross-linking agent and the initiator, the gel electrolyte with good stability, excellent flame retardant property and excellent cycle performance can be formed under certain conditions, so that the thermal runaway behavior of the battery is effectively improved.

The present disclosure provides a cyanoacrylate polymer film forming solution and treatment for inhibiting sweat and enhancing grip performance. The solution includes a polymeric film-forming compound that, once the film is formed, dries the skin surface, blocks sweat pores to inhibit perspiration without leaving toxic by-products or heavy burden residues, and enhances grip performance by reducing slip and improving grip lines. The treatment includes a method of applying the cyanoacrylate polymer film forming solution to a desired location, rubbing the solution into the desired location, drying the solution, and repeating this process until a desired effect is achieved.

The invention relates to the field of polyester fiber materials, and discloses a preparation method of alpha-cyanoacrylate fast-curing fiber, which comprises the following steps: spinning PET resin to prepare PET polyester fiber, and finishing the PET polyester fiber by using a curing finishing agent to prepare the alpha-cyanoacrylate fast-curing fiber. The curing finishing agent contains sodium p-hydroxyphenoxy-macrogol ester, a penetrating agent, a softening agent and a cross-linking agent, the sodium p-hydroxyphenoxy-macrogol ester is alkalescent and can provide hydroxyl so that the alpha-cyanoacrylate can be rapidly cured, and the complete curing time of the alpha-cyanoacrylate can be shortened to 3-5 s; the complete curing time of the alpha-cyanoacrylate is remarkably shortened, and the production efficiency is remarkably improved.

This invention relates to primer compositions for use with cyanoacrylate compositions, particularly to bond plastics substrates. The primer compositions include the combination of triarylphosphine, and tetraalkyl alkylene diamine.

This invention relates to the use of compositions comprising the following in electrical, electronic, or optical devices: - heptyl cyanoacrylate; - a thickener; wherein the composition has a viscosity range of 100 to 7000 mPa·s at 25°C.

The application discloses a method for improving water and oxygen stability of a perovskite solar cell and belongs to the technical field of perovskite solar cell preparation. The technical scheme is that monomer ethyl alpha-cyanoacrylate (ECA) is introduced at perovskite grain boundaries and interfaces of the perovskite solar cell, and polymerization is completed under the triggering of water molecules to form a poly (alpha-cyanoacrylate) (PECA) encapsulation layer with a certain thickness. The PECA encapsulation layer blocks the erosion of environmental water and oxygen to the perovskite crystal while not blocking the transmission and collection of carriers, and has a certain defect passivation effect, so that the water and oxygen stability is improved. The PECA encapsulation is a simple and feasible method for efficiently improving the water and oxygen stability of the perovskite solar cell, and has wide popularization and application prospects.

The invention belongs to the technical field of adhesives, and relates to a water-resistant instant adhesive and a preparation method thereof. The invention provides water-resistant instant glue, which is prepared from the following raw materials in parts by mass: 90 to 95 parts of alpha-cyanoacrylate; 3 to 8 parts of a polyacrylate toughening agent; 0.02 to 0.08 part of hydroquinone; 1 to 3 parts of methacryloyloxypropyl double-terminated polydimethylsiloxane; and 0.1 to 0.3 part of triethanolamine phosphate. The invention aims to solve the technical problems that polydimethylsiloxane is favorable for improving the water resistance of the instant glue, but the adhesion speed of the prepared instant glue is slow, and the adhesion strength is severely reduced.