14089results about "Macromolecular adhesive additives" patented technology

An electro-optic assembly comprises an adhesive layer and a layer of electro-optic material. The adhesive layer comprises a polymeric adhesive material and an ionic material having either its cation or its anion fixed to the polymeric adhesive material. The ionic material reduces the volume resistivity of the polymeric adhesive material and is not removed upon heating to 50° C. In a similar electro-optic assembly comprising an adhesive layer and a layer of electro-optic material, the adhesive layer comprises a polymeric adhesive material which has been subjected to dialysis or diafiltration to remove organic species having a molecular weight less than about 3,500, so that the adhesive material has a content of N-methylpyrrolidone not exceeding 500 ppm based upon the total weight of the adhesive layer and layer of electro-optic material.

The invention relates to an epoxy adhesive composition comprising a) a first epoxy resin, b) a second epoxy resin modified with an acrylonitrile-butadiene rubber, the latter comprising on average less than about 25 weight percent acrylonitrile, and c) a toughener. The total amount of component b) and component c) is higher than about 30 percent based on the total weight of the composition, and the weight ratio of component c) to component b) is greater than about 1:1. The invention further relates to the use of said epoxy adhesive composition for the assembly of parts of a vehicle. It also relates to a vehicle, parts of which are assembled by said epoxy adhesive composition.

Described are fluorochemical surfactants derived from nonafluorobutanesulfonyl fluoride that contain polyalkyleneoxy side chains and may be copolymerized with acrylic acid or methacrylic acid to form polyacrylates or polymethacrylates. The surfactants surprisingly lower the surface tension of water and other liquids in the same or similar low values achieved by premier surfactants such as those derived from perfluorooctane sulfonyl fluoride.

A composition is provided for adhering a first article to a second article, the composition comprising a thermally active low Tg polymeric resin; and a multifunctional crystalline polymer. The thermally active low Tg polymeric resin can, for example, comprise 50-99% of the composition. The multifunctional crystalline polymer can, for example, comprise 1-50% of the composition. In one embodiment, the multifunctional crystalline polymer comprises 5-20% by weight of the composition. In one embodiment, the multifunctional crystalline polymer has a low molecular weight.

The invention discloses an epoxy resin adhesive for manufacturing blades of a wind driven generator and a preparation method thereof. The epoxy resin adhesive is prepared by combining a resin part and a curing agent part, wherein the resin part comprises epoxy resin, a dilutent, filler, a thixotropic agent and an auxiliary agent; the curing agent part comprises an amine curing agent, filler and athixotropic agent; and the filler comprises a powdery filler part and a fibrous filler part. The epoxy resin adhesive prepared by using the general epoxy resin has high strength, particularly furtherimproves the strength of materials by adding the fibrous filler, improves the anti-cracking performance of the materials, meets the special requirements of the blades of wind driven generators with megawatt or more on the materials and has low material cost and high economy.

The invention discloses water-based polyurethane composite adhesive for tanning and a preparation method and application of the composite adhesive, belongs to the technical field of water-based polyurethane composite adhesive preparation methods, and in particular relates to a method for preparing composite adhesive in the fields of artificial leather and synthetic leather. The method for preparing the water-based polyurethane composite adhesive for tanning is characterized by comprising the following steps of: reacting polyol polymer and isocyanate, adding chain extender, hydrophilic chain extender, cross linker, catalyst and solvent, reacting, cooling and emulsifying, to obtain emulsion; and mixing the emulsion, curing agent, wetting agent, tackifier, adsorbent and thickening agent uniformly, and thus obtaining the hot-melt adhesive for artificial leather adhesive layers. The water-based polyurethane composite adhesive for tanning is used for compounding polyvinyl chloride (PVC) / cloth for artificial leather of luggage and clothes. The prepared water-based polyurethane composite adhesive for tanning has high adhesive fastness and good water and solvent resistance, and can be applied to processes of knife coating, roll coating and the like of binding materials of middle layers of artificial leather and synthetic leather in the fields of textiles, leather processing and the like.

A 2K epoxy adhesive is provided that has rapid cure time and good strength characteristics. Both the epoxy resin composition and the hardener composition of the 2K epoxy comprise a reactive toughener. Such adhesives are useful in the manufacture and / or repair of large machinery (e.g., automobiles), and are useful for bonding like or unlike materials, such as metal and composites (e.g., carbon fiber or glass fiber composites).

The invention discloses a radiation pre-crosslinked ethylene-vinyl acetate (EVA) resin film which comprises the following components in parts by weight: 51-99.58 parts of EVA resin, 0.3-2 parts of organic peroxide crosslinking agent, 0.01-5 parts of assistant crosslinking agent, 0.1-2 parts of antioxidant, 0.01-2 parts of silane coupling agent, 0-40 parts of pigment and 0-40 parts of polyolefin elastomer. The invention also discloses a preparation method of the radiation pre-crosslinked EVA resin film, which comprises the steps of sufficiently mixing 51-99.58 parts of EVA resin, 0.3-2 parts of organic peroxide crosslinking agent, 0.01-5 parts of assistant crosslinking agent, 0.1-2 parts of antioxidant, 0.01-2 parts of silane coupling agent, 0-40 parts of pigment and 0-40 parts of polyolefin elastomer, and adding into an extruder; extruding and forming a film through a T-shaped flat mould; rolling and radiating to obtain the radiation pre-crosslinked EVA resin film. Since the film is partially crosslinked before use, the dimensional stability and heat resistance of the film are remarkably improved, thus the film is suitable for large-scale popularization and application.

Water-based adhesive compositions are improved by the incorporation of hollow polymeric microspheres having outer surfaces coated with one or more barrier materials such as calcium carbonate particles. The adhesive compositions exhibit enhanced rheology, sprayability, drying time, tack and storage stability as compared to analogous adhesives that are not modified with coated hollow polymeric microspheres. Such compositions are useful as both contact adhesives as well as wet bonding one-way adhesives.

A radiation-curable adhesive composition comprising at least one tackifier resin and at least one radiation-curable composition is provided wherein the tackifier resin comprises monomer repeating units from at least one aromatic monomer and at least one acrylate monomer. Processes to produce the radiation-curable adhesive composition as well as articles comprising the radiation-curable adhesive compositions are also provided.

The invention provides a reaction bonding type node sealant and a preparation method thereof. The sealant comprises asphalt, modifiers, an emulsifier, a crosslinking agent, thickeners, a reinforcing agent and water. In the formula system, more appropriate modifiers are adopted compared with the prior art, so that a rubber asphalt mixture can achieve good emulsification effect, elasticity and strength of a sealing layer after drying are greatly improved, and the sealing effect can be good and lasting; the chemical linkage effect with concrete is formed by using the crosslinking agent, and bonding force with the concrete is improved; and a lot of thickeners are used for adjusting the stickness of the sealant system, so that the reaction bonding type node sealant can better adhere to the surface of a pentatricopeptide repeats (PPR) or polyvinyl chloride (PVC) pipe, and good sealing at positions where PPR or PVC water supply and drainage pipes are connected with base surfaces of concrete.

An electro-optic display comprises first and second substrates, and an adhesive layer and a layer of electro-optic material disposed between the first and second substrates. The adhesive layer has a volume resistivity in the range of about 109 to about 1011 ohm cm and comprises a mixture of an adhesive material having a volume resistivity of at least about 5x1011 ohm cm and a filler having a volume resistivity not less than about 107 ohm cm, the filler being present in the mixture in a proportion above its percolation threshold in the adhesive material.

The present disclosure relates to additives used in conjunction with adhesives to give enhanced performance. Engineered composite wood materials and methods of making such materials are also provided by the subject application. A reinforced adhesive includes an adhesive and an additive material comprising nanoscopic and microscopic materials.

The invention discloses a fire-proof adhesive and application thereof. The fire-proof adhesive comprises the following components by parts: 100 parts of high-temperature bonding agent, 10-70 parts of fire retardant, 0.5-50 parts of flame retardant synergist, 5-50 parts of strength enhancer, 0.05-20.0 parts of water-proof modifying agent and 0.01-2.0 parts of curing modifying agent. By adopting the fire-proof adhesive and a preparation method of a fire-retardant EPS (Expandable Polystyrene) foam heat-insulating plate, the combustion performance and physicochemical performance of the fire-retardant EPS foam heat-insulating plate can be improved remarkably. For example, the heat-conducting coefficient can be lowered below 0.055w / m.k, the specific gravity can be lower than 150Kg / M<3>, the compressive strength is higher than 150KPa, and the heat value is less than 3MJ / kg.

Provided is a touch panel. The touch panel includes a base and a pressure-sensitive adhesive layer attached to the base and including an acryl-based polymer containing an acryl polymer containing 5 to 30 parts by weight of isobornyl (meth)acrylate, and 5 to 40 parts by weight of methyl (meth)acrylate in a polymerized form. Accordingly, it can effectively inhibit penetration of oxygen, moisture or other impurities at an interface between the base and the pressure-sensitive adhesive layer, or at an interface between a conductor thin film and the pressure-sensitive adhesive layer, and prevent degradation in optical properties such as visibility, etc. due to bubbles generated at the pressure-sensitive adhesive interface. In addition, when the pressure-sensitive adhesive layer is directly attached to the conductor thin film and even exposed to severe conditions such as high temperature or high temperature and high humidity, a change in the resistance of the conductor thin film may be effectively inhibited, and thus the touch panel can be stably driven for a long time.

The invention discloses a modified asphalt waterproof sheet material. The modified asphalt waterproof sheet material is of a multilayer structure; the upper surface of the modified asphalt waterproof sheet material is a mineral granule layer; a fiberglass reinforcement basic layer and a polyester reinforcement basic layer are sequentially arranged in the middle part of the modified asphalt waterproof sheet material in sequence; a self-adhesion polymer modification asphalt sizing material layer is arranged in the bottom layer of the modified asphalt waterproof sheet material; adjacent layers are adhered through an elastomer polymer modification asphalt sizing material layer; an isolation film is adhered on the self-adhesion polymer modification asphalt sizing material layer. The structure of the modified asphalt waterproof sheet material provided by the invention can be applicable to small deformation of the basic layers, and has the advantages of higher size stability, convenience in construction, adhesion reliability and self-heating property. The invention provides a reliable and exposed modified asphalt waterproof sheet material, and is particularly applicable to monolayer roofs.

The invention discloses a preparation method for a formaldehyde-free protein adhesive, mainly comprising the following steps: 1) adding a protein-containing raw material and water and stirring at room temperature; 2) adding acidity-adjusting agent for reaction at 20-40 DEG C; 3) adding enhancer for reaction at 20-50 DEG C; and 4) adding preservative and stirring at room temperature to obtain the formaldehyde-free protein adhesive. In the invention, the adhesive is prepared based on protein-containing by-products of plants or animals, has the characteristics of low cost, wide source, renewability and the like, does not contain formaldehyde, has no toxicity, is environmental friendly and has superior market prospect. In addition, the existing degreased miscellaneous meal for low value-added product of animal feed, fertilizers and the like can be developed into high value-added products, thus providing a new way for development of environmental-friendly biomass-based wood adhesive and resource utilization of industrial by-products.

This invention relates to compositions suitable for the formation of an adhesive layer used for in-mold decoration.

The invention discloses the composition of a bi-component anti-impact epoxy structural rubber adhesive which is cured at room temperature and a preparation method thereof. The anti-impact epoxy structural rubber adhesive is prepared from epoxy resin component and curing agent component based on the weight proportion of 100:45-55. The preparation process comprises pre-treatment of nanometer rubberparticle by a wetting dispersant, modification of epoxy resin of bisphenol A (or bisphenol B) by using nanometer rubber particle, preparation of a component A, preparation of a component B and use ofthe adhesive. The structural rubber has higher anti-impact, anti-vibration and ageing-resistant performances as well as good thermal stability, and is used for adhering metal section bar of an aluminum alloy car body with good effect.

The invention relates to a 4,4'-bis[4-(2,4-diamidophenoxy)phenyl]biphenyl high-temperature-resistant epoxy adhesive and a preparation method thereof. The 4,4'-bis(2,4-diamidophenoxy)biphenyl high-temperature-resistant epoxy adhesive is composed of a component A and a component B, wherein the component A is a copolymer prepared by reacting 4,4'-bis(2,4-diamidophenoxy)biphenyl and epoxy resin; and the component B is a homogeneous transparent solution with the solid content of 15-30%, which is prepared by reacting 4,4'-bis(2,4-diamidophenoxy)biphenyl and aromatic dibasic acid anhydride in a strong-polarity non-proton organic solvent and toluene. The preparation method comprises the following step: evenly mixing the component A and the component B in a mass ratio of 1:(1-2) at room temperature. The preparation technique is simple; and the adhesive has excellent comprehensive properties, can be widely used for bonding steel, copper, aluminum or any other metal with ceramic, glass, resin-base composite material or any other substrate, and has favorable industrialization prospects.

The invention relates to a preparation method of repairing adhesive, in particular to a binder for repairing blade of a wind driven generator, belonging to the high polymer material field. The preparation method of double-component epoxy resin binder used for repairing blade is simple in operation and low in cost. The double-component epoxy resin binder for repairing blade which is made by the method of the invention has high tenacity, high shear strength, low heat and low shrink, thus being suitable for repairing and binding of large structural part; solidification is rapid, the binder can be rapidly solidified in 10-30 minutes at 5-25 DEG C and reach certain strength; and the binder is used for repairing defect of blade of wind driven generator.

The invention discloses a protein-based wood adhesive which is characterized by being made of the following raw materials in part by weight: 100 parts of water, 5 to 50 parts of protein-containing raw materials, 10 to 14 parts of polyamide epichiorobydrin (PAE), 5 to 15 parts of modifier, 1 to 15 parts of acidity regulator, 0 to 15 parts of stabilizer, 0 to 10 parts of humectant, 0 to 10 parts of anti-freeze, 0.1 to 10 parts of preservatives, 0 to 10 parts of mold inhibitor, 0 to 10 parts of enzyme inhibitor, and 0 to 10 parts of filling. The protein-containing raw materials contain over 10% of coarse protein, and the modifier is one of or a mixture of several of polyacrylamide, polyvinyl alcohol, polyvinyl acetate, borax, ammonium thiosulfate, carbamide and isocyanate. The invention also discloses a preparation method of the protein-based wood adhesive. The invention adopts common chemical materials and adopts a break-through normal-temperature material-mixing technique, which uses water as solvent. The adhesive has the advantages of high stickiness, evenness and convenience in adhesive application and stable product quality.

The invention discloses a room-temperature cured epoxy resin flexible sealant and a preparation method thereof. The room-temperature cured epoxy resin flexible sealant comprises a component A and a component B, wherein, the component A comprises 40-80 weight portions of epoxy resin, 10-40 weight portions of diluent, 10-30 weight portions of plasticizer, 0.5-5.0 weight portions of silane coupling agent, 0.05-2.0 weight portions of antifoaming agent, and 0.2-2.0 weight portions of anti-oxidant, the component B comprises 10-50 weight portions of aliphatic short-chain amine curing agent and 30-90 weight portions of aliphatic long-chain amine curing agent, and the weight ratio of the component A to the component B is (0.8-1.0):1.0. The invention further discloses a preparation method of the epoxy resin flexible sealant. The epoxy resin flexible sealant disclosed herein has moderate mixing viscosity and good levelability, and can be rapidly cured at room temperature. The cured substance has good light transmittance and flexibility, and can be applied for surface coating of LED strip light, LED path light, LED mold strip and other technology products.

The invention discloses a modified-starch-based wood adhesive and a preparation method thereof. The preparation method comprises the steps that oxidized corn starch is used as a main raw material, a cross-linking agent is added into the oxidized corn starch to conduct crosslinking modification, and then an initiating agent and a high molecular monomer are added to the oxidized corn starch to conduct graft modification, so as to obtain a modified starch emulsion in a complex net structure; and after the modified starch emulsion is warmed up and pasted, modifying agents comprising a stabilizing agent, a defoaming agent, a plasticizing agent and the like are added into the modified starch emulsion, and the high-performance green environment-friendly adhesive is manufactured. Each performance of the adhesive disclosed by the invention can reach or exceed requirements of a GB / T9846-2004 standard, the adhesive has the characteristics of high bonding strength, good water resistance, long storage time, high solid content, low cost, greenness, environment friendliness and wide use range, and can be widely applied to the bonding and the use of wood materials such as artificial boards, plywood and cellulose boards.

A multi-lingual translation system that provides multiple output sentences for a given word or phrase. Each output sentence for a given word or phrase reflects, for example, a different emotional emphasis, dialect, accents, loudness or rates of speech. A given output sentence could be selected automatically, or manually as desired, to create a desired effect. For example, the same output sentence for a given word or phrase can be recorded three times, to selectively reflect excitement, sadness or fear. The multi-lingual translation system includes a phrase-spotting mechanism, a translation mechanism, a speech output mechanism and optionally, a language understanding mechanism or an event measuring mechanism or both. The phrase-spotting mechanism identifies a spoken phrase from a restricted domain of phrases. The language understanding mechanism, if present, maps the identified phrase onto a small set of formal phrases. The translation mechanism maps the formal phrase onto a well-formed phrase in one or more target languages. The speech output mechanism produces high-quality output speech. The speech output may be time synchronized to the spoken phrase using the output of the event measuring mechanism.

A double sided adhesive tape is provided with adhesive layers on two surfaces of foam substrate. The interlayer strength of the foam substrate is more than 12N / cm, and 25% compressive strength is 30-170kPa. The adhesive layer is composed of an acrylic acid series composition which comprises the following components: acrylic acid series copolymer which comprises (methyl)acrylate with 4-12 carbon atoms and vinyl monomer with carboxyl as monomer component, and polymerized abietate series adhesive resin. According to the double sided adhesive tape, even when the rigid members are bonded with eachother, excellent sealing performance, reprocessing adaptability and repeeling performance between the double sided adhesive tape and the member being bonded can be realized. Furthermore water impregnating can be effectively prevented.

The invention relates to a pressure-sensitive glutinous composition which uses glutinous rice flour as a raw material and application thereof, which belong to the product and technology of environment-friendly hydrophilic pressure-sensitive adhesive. The glutinous rice flour, water, a liquid plasticizer at room temperature and a modifier are mixed, heated and cured to form the pressure-sensitive adhesive composition with application of tearability and adhesion; the glutinous rice flour is flour of sticky rice, glutinous corn, large glutinous millet, small glutinous millet and glutinous sorghum rice and one or a mixture of several of starch of the glutinous rice and modified starch. The composition can be combined with various substances, drugs with different types and the like to prepare various pastes, can be widely used in a transdermal administration system, an iontophoresis system, wound treatment, a biological medical electrode and other equipment and systems needing pressure-sensitive adhesive and is in particular suitable for the application of a traditional Chinese medicine transdermal administration preparation.