90 results about "Cyanoacrylate" patented technology

The invention discloses a high-strength puncture-resistant composite film, and relates to the technical field of composite films, the high-strength puncture-resistant composite film comprises a surface protection layer, a first reaction layer, a second reaction layer, a third reaction layer and a bottom protection layer which are arranged in sequence; the first reaction layer is prepared from nylon 6 and an amino silane coupling agent; the second reaction layer is made of thermoplastic polyurethane, and a containing channel and cyanoacrylate located in the containing channel are arranged in the second reaction layer; the third reaction layer comprises polypropylene, calcium carbonate and imidazolium ionic liquid; when the composite film is punctured, the cyanoacrylate is in contact with the amino silane coupling agent to generate curing reaction, so that a punctured object is fixedly clamped at the position penetrating through the first reaction layer; the imidazolium ions are in contact with the cyanoacrylate to generate polymerization reaction and form a polymer, and the calcium carbonate is in contact with the leachate to release CO2, so that the polymer is forced to be pressed into a puncture hole, and a puncture object is further retained, so that the anti-puncture effect of the composite membrane is relatively good.

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 is directed to a plastic extension for a nail covering and a nail applique kit including at least one plastic extension, an adhesive including a UV gel a cyanoacrylate, a free radical curable monomer composition or a PSA and an optional processing aid.

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.

The present invention concerns a compound of formula (I), wherein R1 is H or an organic moiety, said compound of formula (I) having a biocarbon content equal to or higher than 20%.

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.

An organic dental gum pad formed from a moldable composition includes a nano starch-based biomaterial, including a nanocomponent, a starch biocomposite, and an organic composition. The nanocomponent includes fish bone powder, oyster shell powder, coconut shell powder, graphene, and sheep bone powder. The starch biocomposite includes date seed nano-starch, black palm seed-based nanocellulose, corn starch, and olive seed-based nano-starch, and the organic composition includes at least one of Lannea sp. glue, waste jackfruit latex, Acacia nilotica glue, a sheep gut oil-based glycerin, beetroot peel dye, dragon fruit peel dye, mangosteen dye, pomegranate peel, and aroid peel gel. The organic dental gum pad further includes at least one polymer component, and a cyanoacrylate. The moldable composition includes particles having an average particle size of less than 30 nm, and a molded structure has a thickness of 0.5 to 4 mm.

The present invention refers to a curable two-part adhesive composition comprising a first part comprising one or more cyanoacrylate monomer(s), one or more (metha)acrylate monomer(s), a per-compound and, optionally, additives to control viscosity and rheology; and a second part comprising: a non-reactive diluent and a transition metal catalyst, and optionally an electron rich initiator for cyanoacrylates. It also relates to a syringe or a cartridge comprising said two-part curable composition, to the use of such composition for bonding substrates, to the use of such composition filling depressions, cracks or holes in a substrate or between substrates to a method for bonding substrates using said composition, and to a repair method for filling depressions, cracks or holes in a substrate or between substrates using said composition.

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 provides a wound repair material and a preparation method thereof, and relates to the field of biomedical materials. The preparation method of the wound repair material comprises the following steps: mixing alpha-cyanoacrylate and acetone to obtain an adhesion matrix solution; mixing polyvinyl butyral, quaternized cellulose, dexamethasone and an organic solvent to obtain a functional additive solution; and performing double-needle array electrostatic spinning on the adhesion matrix solution and the functional additive solution to obtain the wound repair material. The wound repair material prepared by the invention has the functions of relatively high adhesion, antibacterial ability, anti-inflammatory ability, biocompatibility and the like, can avoid side effects such as thrombus risk and the like, and can be safely and efficiently adapted to healing environments of different wounds.

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.

The invention relates to the technical field of organic photoelectric functional materials, and provides an organic near-infrared luminescent dye compound as well as a crystal and application thereof. The material disclosed by the invention comprises a series of compounds consisting of 4-(dimethylamino) phenyl and a cyanoacrylate yoke skeleton and malononitrile derivative compounds. The compound is simple in structure and small in molecular weight, is efficiently synthesized through one-step Knoevenagel condensation reaction, is simple in step, is low in cost, is easy for industrial production, and can adjust emission wavelength and performance by changing terminal group substitution or acceptor types. The material has good self-assembly capability and high crystallinity in a solid state, and can form a stable laser gain medium. The narrow-spectrum, high-brightness and low-threshold stable laser output is realized in the near-infrared band, the photoluminescence quantum yield reaches 24%, and the stimulated emission performance is excellent. The material has good chemical stability and device compatibility, and shows wide application prospects in the fields of near-infrared solid dye lasers, optical communication, optical fiber amplifiers and the like.

To provide a polyester-based adhesive composition which is hardly yellowed and is excellent in ultraviolet absorption performance while having excellent adhesive strength and substrate adhesion, an adhesive, an adhesive sheet, and an optical member with an adhesive layer.SOLUTION: A polyester-based adhesive composition includes: a polyester resin [I] including a structural unit derived from polyvalent carboxylic acids (A), and a structural unit derived from a polyol (B); and an ultraviolet absorber [II], wherein the ultraviolet absorber [II] is at least one selected from the group consisting of a triazine-based compound, a triazole-based compound, and a cyanoacrylate-based compound.SELECTED DRAWING: None

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.