129 results about "Cyanoacrylates" patented technology

A cyanoacrylate composition comprising (i) at least one lower cyanoacrylate monomer component selected from ethyl cyanoacrylate or methoxy ethylcyanoacrylate; (ii) at least one higher cyanoacrylate monomer component than in an amount greater than 12% by weight based on the total weight of the combination of the lower cyanoacrylate monomer and the higher cyanoacrylate monomer and (iii) a plasticizer. The higher cyanoacrylate monomer and the plasticizer are chosen from certain ones. The compositions cure to give flexible polymeric materials which are desirably also transparent.

An adhesive applicator for applying medical adhesives, particularly cyanoacrylates, to incisions such as those made during minimally invasive surgery. The applicator employs a pipette tip or similar narrow flow restrictor tip to close the incision and a body of foam to seal the incision. Methods of using the applicator are also disclosed.

An adhesive applicator for applying medical adhesives, particularly cyanoacrylates, to incisions such as those made during minimally invasive surgery. The applicator employs a pipette tip or similar narrow flow restrictor tip to close the incision and a body of foam to seal the incision. Methods of using the applicator are also disclosed.

The present invention relates to cured compositions useful as adhesives and sealants formed by dispersing an amine-terminated polyamide curative into a base to form a composite and activating the composite forming the cured composition. Bases described include epoxies, polysulfides and cyanoacrylates. Curing mechanisms include heat and pressure activation. The amine-terminated polyamide curative has a ratio of equivalents of amine to acid groups of from about 1.05:1.00 equivalents NHX:COOH to no greater than about 1.95:1.00 when x is 1 or 2.

The invention discloses acrylic resin paint capable of being quickly cured. The paint is a double-component curing system. Modified acrylic resin and alpha-(methyl)alkyl cyanoacrylate have good intersolubility and good adhesion, alpha-(methyl)alkyl cyanoacrylate can accelerate curing of a coating. The paint system can be quickly cured, and the environment-friendly coating which is good in weather resistance and high in adhesion can be obtained. The technology is simple, operation is easy, coating efficiency can be improved, and the good paint can be used for solar cell backplanes.

The invention relates to methods of using compositions for forming microbial sealant drapes. In particular, the invention relates to the use of compositions of combinations of cyanoacrylates for the in situ formation of drapes that can be used in surgery to protect patients from surgical site infections.

A blood vessel embolization method includes inserting a balloon catheter into a blood vessel of a human or an animal having a lesion site and disposing a balloon of the balloon catheter at a portion located at a proximal side of the blood vessel and in a neighborhood of the lesion site thereof; shutting off a blood flow in the blood vessel by expanding the balloon; discharging a glucose solution from a distal end of the balloon catheter in a state in which the blood flow in the blood vessel is shut off; discharging a cyanoacrylate-based embolization substance-containing liquid from the distal end of the balloon catheter after the glucose solution injection step; hardening an embolization substance by maintaining a blood flow shut-off state of the blood vessel after the embolization substance injection step; and removing the balloon catheter from the blood vessel after the embolization substance-hardening step.

A novel ORC adhesive tape is disclosed. Specifically, the ORC adhesive tape is useful as an alternative to conventional mechanical and non-mechanical wound closure means. The ORC tape has a tape substrate made from neutralized ORC and it contains an adhesive composition such as a bioabsorbable alpha-cyanoacrylate.

This invention discloses a medicine of anti-tumor and anti-plant virus effect---- cyanoacrylate category derivative and its preparing method and biological activity. The following general formula denotes the compound and its preparing method. The definition of R1, R2, R3 in the formula is in instruction book. Materials are carbon bisulfide, cyan acetic ester, dimethyl sulfate, aromatic amine, and sodium cyanide is catalyst, cyanoacrylate category derivative is synthesized by three steps. There is proliferation inhibitory effect of compound b, k to PC3 prostate cancer cell gene stock, and proliferation inhibitory effect of compound i, j to NIN3T3 cell ERK albumen phosphorylation, and good anti-cancer activity is revealed. There is inhibitory activity of compound b, n to tobacco mosaic, and certain anti-plant virus activity is revealed.

Systems and methods for the treatment of perforator veins for venous insufficiency are described. The systems can include a catheter assembly comprising a proximal hub, a spin lock on the proximal hub, a elongate body overmolded to the proximal hub, and a distal end, the catheter, the elongate body configured to be placed within a perforator vein; an extension tubing having a proximal female hub, a distal male hub, and an elongate body therebetween, the distal male hub having a spin lock thereon, the distal male hub configured to be attached to the proximal hub of the catheter assembly; a syringe filled with a volume of media including cyanoacrylate; and an injector configured to automatically dispense a bolus of the media sufficient to coapt the perforator vein from the syringe upon actuation of a control on the injector. Methods are also disclosed.

A fast-curing instant glue is characterized by including the following components by the mass percentage: 86-95% of alpha-cyanoacrylate, 0.5-2% of alpha-cyanoacrylic acid, 3-8% of butadiene-acrylonitrile rubber, 0.01-3% of a stabilizer, 0.5-3% of a promoting liquid, and 0.05-1% of a catalyst. A preparation method comprises the steps: adding alpha-cyanoacrylate and alpha-cyanoacrylic acid in a reaction kettle, and heating up to 60-95 DEG C while stirring; adding the organic solvent and the catalyst with the preset ratio; adding the butadiene-acrylonitrile rubber, and evenly stirring the mixed solution with the stirring time of 60-120 minutes; heating up and distilling off the organic solvent; under secondary Roots, distilling off a modified alpha-cyanoacrylate product; and finally adding a proper amount of the stabilizer and the promoting liquid under nitrogen protection. By modification of alpha-cyanoacrylate, and in cooperation with the promoting liquid adhesive technology, the original poor thermal stability and an albefaction phenomenon are improved; the aspects such as water resistance, thermal resistance and flexibility are greatly improved, and thus the effect of impact strength is improved; and the fast-curing instant glue is good in adhesive effect, small in smell and good in environmental protection.

The invention provides an epoxy resin adhesive for bonding fluororubber and metal. The adhesive comprises component A and component B. The component A comprises the following materials by weight: 30-40 parts of epoxy resin, 5-6 parts of rosin-modified resin, 2-3 parts of chlorosulfonated polyethylene, 5-10 parts of natural rubber powder, 2-4 parts of chlorinated paraffin, 2-4 parts of ferric oxide micropowder, 2-4 parts of magnesia, 3-6 parts of carbon black, 2-3 parts of a silane coupling agent, 1-2 parts of dodecyl phosphate, 1-2 parts of silica sol, 1-2 parts of alumina sol, 1-3 parts of acrylate, 1-2 parts of titanium dioxide, 3-6 parts of polymethyl methacrylate, 3-6 parts of alpha-cyanoacrylate, 2-4 parts of tricresyl phosphate, 5-10 parts of polyethylene glycol, 3-4 parts of poly(lactic acid-co-glycolic acid), and 40-60 parts of organic solvent. The component B comprises the following materials by weight: 15-20 parts of a curing agent, and 20-30 parts of dimethyl formamide.

The present invention provides a method for waterproofing connection parts of covered wires which enables to surely make an electrically connected connection part of a covered wire waterproof by a simple and quick process at low cost. A method for waterproofing connection parts of covered wires is that a curing sealing material is injected into a protective cap for protecting a connection part of a covered wire, then the connection part and a covered portion near the connection part of the covered wire are put in the sealing material, and then the sealing material is cured. The sealing material is a photocuring cyanoacrylate resin composition which has a viscosity of not more than 200 mPa.s at 25 DEG in the uncured state and a tensile elongation at break of not less than 20% after curing. The sealing material is cured by irradiation of an electromagnetic wave having a wavelength capable of curing the sealing material.

An apparatus and method for developing latent fingerprints having a heat source with a removably mounted chamber and sublimation system wherein the sublimation system is in communication with a heat emitting end of the heat source and an internal space of the chamber. Upon activating the heat source, heat transforms a cyanoacrylate of the sublimation system into vapor within the internal space of the chamber. The vapor contacts an object contained within the chamber to reveal any latent fingerprints on the object.

A flexible abrasive finishing article including a backing of fabric or paper having first and second major surfaces with abrasive particles adhesively secured to said first major surface and a layer of cyanoacrylate based material substantially covering the second major surface. The method of making a flexible abrasive finishing material including the steps of applying a layer of cyanoacrylate based material to a surface of a backing material opposite the surface to which abrasive particles are adhesively secured and covering said cyanoacrylate material.

The present invention relates generally to an article comprising a curable film on a release substrate and / or carrier substrate. More particularly, the curable film comprises at least one specific cyanoacrylate monomer and at least one film forming (co)polymer. The article may take the form of a label, a single-sided tape, a transfer tape or a double-sided tape.

This invention relates to one nuclear power station with low smoke without chimney cable insulation protection materials, which uses ethene-vinyl acetate polymer or silicon resin as base resin interfacing polyolefin, wherein, it uses aluminum hydroxide, magnesium hydrate, earth silicon or silicon resin as combustion inhibitor with aid of antiager, photographic sensitizer and process aid agent; the sensitizer is for cyanoacrylate, 1,1,1-trimethylolpropane methyl methacrylate, organic silicon resin, phenylene silica gel or formaldehyde-phenol resin; The aid process agent is for aliphatic acid salt and organic silicon.

The invention relates to a preparation method of halohydrocarbon-free alpha-cyanoacrylate, which comprises the following steps: mixing cyanoacetate and methyl carbonate in a reaction kettle, simultaneously mixing formaldehyde and a base catalyst in a charging hopper, then adding the mixture of the formaldehyde and the base catalyst to the reaction kettle at twice, performing a refluxing and condensation reaction at 78 DEG C under normal pressure, adding a dehydration solvent methyl carbonate to dehydrolyze after the condensation reaction is finished, adding an anionic polymerization inhibitor phosphorus pentoxide and a free radical polymerization inhibitor, and depolymerizing and distilling at 155-210 DEG C at a vacuum degree of 0.5-30 mmHg to obtain an alpha-cyanoacrylate coarse monomer; and rectifying the coarse monomer to obtain a high-purity alpha-cyanoacrylate refined monomer, wherein the yield of the alpha-cyanoacrylate refined monomer is more than 75%, and the purity of the alpha-cyanoacrylate refined monomer is 99%. The invention has the advantages of no pollution, energy conservation and high yield and high purity of the obtained product, and is stable in reaction, thereby being suitable for popularization and application.

The invention discloses an indolo[3,2,1-jk]carbazole derivative, a preparation method and an application. The derivative takes the indolo[3,2,1-jk]carbazole with coplane rigid structure and good heat stability as an electron donor, quinary arylheterocyclo group or hexahydric arylheterocyclo group or quinary arylheterocyclo group and hexahydric arylheterocyclo group can be introduced for taking as pi conjugate bridge unit, cyanoacrylate is taken as an electron acceptor to obtain a series of electron push-draw type indolo[3,2,1-jk]carbazole derivative, the derivative has photoelectrochemistry performance, can prepare a photosensitizer of a dye sensitization solar energy cell, the derivative enables easy preparation and simple purification, the cost of the derivative is lower than that of the trisruthenium, and the preparation cost of the dye sensitization solar energy cell can be effectively reduced.

This invention relates to novel iminium onium salts, which may be in the form of ionic liquids, and a process for producing electron deficient olefins, such as 2-cyanoacrylates, using such an iminium onium salt, for instance in the form of an ionic liquid.

The invention discloses a PE thin film packaging material and a preparation method thereof, and belongs to the technical field of thin film material preparation. The PE thin film packaging material isprepared from the following raw materials: PE resin, nano-SiO2, sodium dodecylbenzenesulfonate, alpha-cyanoacrylate, aluminum isopropoxide, potassium trimethylsilanolate, polyethylene oxide, zinc stearate, glycerol, montmorillonite, oleic acid, polyethylenimine. The PE thin film packaging material is prepared by the steps such as grinding, high temperature reaction, mixing, granulation, rolling and the like. With a process of the invention, the tensile strength, elongation at break, and tear strength of the PE thin film packaging material can be improved.

It is to provide an EL sheet and a member for lighting a push-button switch capable of emitting light stably and sufficiently for a long period of time without problems such as non-light emission phenomena and generation of black dot, even if the EL element is subjected to, for example, a drawing process to form into a three-dimensional shape. A laminated EL sheet is formed that comprises a counter electrode layer 15, a dielectric layer 14, a light-emitting layer 13, and a transparent electrode layer 11. An adhesive layer 12 made of adhesive having excellent adhesiveness to the electroconductive polymer is disposed between the transparent electrode layer 11 made of an electroconductive polymer and the light-emitting layer 13. In order that the adhesives have excellent adhesiveness, polyester, acrylic, cyanoacrylate, polyolefin, ethylene-vinyl acetate or ethylene ethyl acrylate type adhesive is used. The dielectric layer is made of fluoro type, polyester type or acrylic type resin binder. Furthermore, to improve durability in a hot and high-humidity environment, a second counter electrode layer 17 and / or a second dielectric layer 17, both having an ion diffusion-preventing function is / are disposed.

The invention discloses a quasi solid electrolyte for a dye sensitization solar cell. The compositions by weight percentage of the electrolyte are: 5-20 percent of alpha- cyanoacrylate, 0.1-1 percent of a crosslinking agent, 10-20 percent of iodine salt, 0.5-3 percent of iodine, 1-10 percent of a modifier, 40-60 percent of a plasticizer, and 10-20 percent of an organic solvent. A preparation method comprises the following steps of: stirring and mixing the compositions evenly according to the proportion to generate homogeneous phase liquid; then dripping the homogeneous phase liquid onto a TiO2 film electrode for absorbing dye; and thermosetting and drying evaporating the organic solvent to obtain the quasi solid electrolyte for the dye sensitization solar cell. The quasi solid electrolyte is characterized by low cost, simple preparation process, a high curing rate, easy realization of industrialized production, high ionic conductivity, good thermal stability and mechanical properties, etc.

A compound represented by the following general formula (1). In the formula, A represents a benzene ring, a naphthalene ring and the like, wherein these rings may be substituted with a halogen atom and the like, R1 represents a hydrogen atom and the like, R2 represents a C1-35 hydrocarbon group having or not having at least one group selected from an epoxy group, 4-vinylphenyl group and a (meth)acryloyloxy group, or a hydrogen atom, wherein at least one of R2 with n occurrences is a C3-35 hydrocarbon group having at least one group selected from an epoxy group, a 4-vinylphenyl group and a (meth)acryloyloxy group, n represents an integer of 1 to 6, and X represents a nitrogen atom, an oxygen atom, a sulfur atom, a phosphorus atom, or an n-valent organicgroup having 35 or less carbon atoms.

Stabilized photoactive composition comprising: - at least one photoactive organic polymer; - at least one light stabilizer selected from hindered amines; - at least one UV absorber selected from triazines, benzoxazinones, benzotriazoles, benzophenones, benzoates, formamidines, cinnamates or propenoates, aromatic propanediones, benzoimidazoles, cycloaliphatic ketones, formanilides including oxamides, cyanoacrylates, benzopyranones, salicylates, or mixtures thereof. Said photoactive composition can be advantageously used in the construction of photovoltaic devices such as, for example, photovoltaic cells, photovoltaic modules, solar cells, solar modules, on both rigid and flexible supports.

The invention relates to an adhesive composition. The adhesive composition comprises at least one single-alpha-cyanoacrylate (a), at least one dual-alpha-cyanoacrylate glycol or dual-alpha- cyanoacrylate diamide (b) and at least one additive (c). The adhesive composition can be rapidly cured, does not contain organic solvents and can be used for food packaging, lunch boxes, bioengineering materials and medical adhesives; and curing products can be degraded and is non-toxic.

The invention relates to an instant-drying solvent-free adhesive for PVC (polyvinyl chloride) pipeline bonding, which is prepared from the following components in percentage by weight: 70-96% of cyanoacrylate, 1-20% of chlorinated polyvinyl chloride resin, 0.5-10% of vinyl-terminated nitrile-butadiene rubber, 0.1-10% of plasticizer, 0.1-5% of thixotropic agent, 0.01-5% of anionic polymerization inhibitor and 0.01-5% of free radical polymerization inhibitor. The adhesive has the advantages of simple preparation technique, favorable damp-heat resistance, favorable aging resistance, favorable toughness, favorable migration resistance, high bonding strength for PVC and the like. The adhesive is environment-friendly and free of solvents, and thus, does not have solvent discharge; and the adhesive has favorable environment friendliness, and conforms to the human environment-friendly health requirements. The performance testing proves that the adhesive satisfies the requirements in national related industry technical standard.

Provided is a method whereby a three-dimensional shaped object can be easily reinforced. The reinforcement method for three-dimensional shaped objects is a method for reinforcing three-dimensional shaped objects by using a composition for impregnation that contains a 2-cyanoacrylate ester having a specific structure, said method being characterized by: the viscosity of the composition for impregnation being 1-1,000 mPas at 25 DEG C; and by the Shore hardness (D) of a cured product of the composition for impregnation being 20-75. Ideally, the three-dimensional shaped object is shaped using an inorganic powder.