2503results about "Adhesive processes" patented technology

There is provided a compound which, while being a curable resin, can easily exhibit repairability, easy disassembly, and remoldability when being in the form of a cured product, a curable resin composition obtained using the same; and a cured product thereof. Specifically, there is provided a phenolic hydroxyl group-containing compound in which a structural unit A having one or more phenolic hydroxyl groups and a structural unit B different from the A are linked in A-B-A, and the structural unit A and the structural unit B are bonded by a reversible bond by a Diels-Alder reaction between a furan structure and a maleimide structure.

The invention discloses a pure bio-based polyhydroxyalkanoate adhesive as well as preparation and application thereof, and belongs to the technical field of degradable adhesives. According to the adhesive, polyhydroxybutyrate valerate or polyhydroxybutyrate hexanoate is used as a matrix, and the acid value reaches 2-15 mg KOH / g through molten end group activation; a reactive emulsifier with a hydrophilic-lipophilic balance value of 9-12 is introduced into a water phase, and the stable aqueous dispersion is prepared through phase inversion high-shear emulsification. The Z-average particle size of the dispersion is 0.12-0.30 [mu] m, and the content of the free surfactant is not higher than 30wt%. After the tackifying resin, the plasticizer and the vegetable wax are compounded, the bio-based carbon content of the obtained adhesive is not lower than 95%, and the volatile organic compound content is not higher than 100 mg / kg. The paper / paper heat sealing strength of the adhesive is not lower than 7.0 N / 15mm, the 180-degree peel strength is not lower than 7.5 N / 25mm, and the adhesive can pass repulping evaluation.

A pressure sensitive adhesive electrolyte (PSAE) was prepared by polymerizing in two steps, e.g., (a) UV syrup preparation and (b) curing by UV web polymerization or UV polymerization of a mixture comprising at least the following components: • 4 – 86 wt % of acrylate monomer (a1) from the group of the (meth)acrylic esters having 4 – 44 carbon atoms and containing at least one oxygen atom, • 0.5 – 50 wt % of acrylate monomer (a2) from the group of the (meth)acrylic esters or amides having 4 – 25 carbon atoms and containing at least one nitrogen atom, • 0.005 – 10 wt % of at least one initiator, wherein the at least one initiator is preferably a thermal initiator and / or a photoinitiator, especially preferably at least one photoinitiator, • 0 – 35 wt % of conducting salt, • 2 – 60 wt % of ionic liquid, wherein the ionic liquid is preferably a room temperature ionic liquid (RTIL), • optionally further additives like plasticizer, antioxidant, tackifier, chain transfer agent, filler, corrosion inhibitor, oxygen scavenger, additional monomers, as for example 0 to 50 wt %, wherein optionally one or more of the components are added at least proportionally, as for example completely, only during or after the polymerization. With such PSAE conductivities according to the invention an ionic conductivity by test B of more than 10-6 S / cm up to at least 10-3 S / cm, can be achieved and the PSAE is suitable for applications like electrochromic cells / dimming foils and PSA with electrically debonding function. Especially, with such PSAE conductivities according to the invention, an ionic conductivity by test B of more than 10-8 S / cm up to at least 10-3 S / cm and peel adhesion by test A up to around 9 N / cm can be achieved.

Provided are a secondary cured UV pressure-sensitive adhesive, and preparation methods for same and an explosion-proof film. The secondary cured UV pressure-sensitive adhesive is composed of the following materials, in percentages by mass: 31-35% of a hydroxyl-containing polyacrylate prepolymer, 6-9% of pentaerythritol triacrylate, 3-5% of 2-hydroxyl-3-phenoxy propane acrylate, 2-3% of an isocyanate curing agent, 2-3% of photo initiator 184, and 50% of ethyl acetate. The secondary cured UV pressure-sensitive adhesive is prepared by carrying out a thermal curing cross-linking reaction of a hydroxyl-containing polyacrylate prepolymer, pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using an isocyanate curing agent, and initiating a free radical polymerization of pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using photo initiator 184.

A composite radiative cooling material includes a first layer including a reflective material, a second layer including a porous material, and a third layer including an emissive material. The optical properties of the respective materials and the arrangement of the respective layers cause the radiative cooling material to exhibit a total solar reflectance greater than 85%, and a thermal emissivity greater than 85% in a wavelength range of 8 to 13 μm. The layers may be in a vertically stacked arrangement, with the third layer capable of directly facing the sky when the composite radiative cooling material is installed for cooling a load, the second layer arranged under the third layer, and the first layer arranged under the second layer. The composite radiative cooling material may be thermally coupled to a cooling load to provide radiative cooling to the cooling load.

A method of manufacturing an adhesive member includes providing, for a substrate, a resin composition having a viscosity of about 5 cP to about 50 cP, as measured according to JISK2283 method, at about 25° C. The resin composition is exposed to a first light to form a preliminary adhesive member having a curing rate of about 80% to about 98%. The preliminary adhesive member is exposed to a second light having a light integral / dose that is more than that of the first light to form an adhesive member. The preliminary adhesive member may have a loss tangent (tan δ) of about 0.2 to about 0.6 and may have a glass transition temperature of about −70° C. to −30° C. Accordingly, the preliminary adhesive member and adhesive member formed by the method of manufacturing an adhesive member may exhibit increased reliability.

A linerless wash-off label (100) comprising a paper-based face (101, 201) and pressure sensitive adhesive (102) is provided. The paper-based face (101, 201) comprises a base paper (206) and a release layer (203), and the release layer (203) and the pressure sensitive adhesive (102) are arranged on opposite sides of the base paper (206). The pressure sensitive adhesive (102) comprises a water-based acrylic emulsion polymer composition, the pressure sensitive adhesive (102) is sensitive to washing conditions, and the base paper (206) comprises wet strength resin and has water absorptiveness of from 10 to 30 g / m2 when measured according to an ISO standard 535 (contact time 60 s). Further, a label product roll comprising the linerless wash-off labels (100) as well as a labelled item comprising an item and a linerless wash-off (100) label are provided. Still further, use of the linerless wash-off label (100) and method of manufacturing a linerless wash-off label web for providing the linerless label product roll are provided.

Adhesive compositions including 20 wt. % to 80 wt. % of a polymer selected from the group consisting of a radial styrene-isoprene block copolymer, a radial styrene-butadiene block copolymer, and combinations thereof, and 3 wt. % to 80 wt. % of a liquid rubber having a molecular weight of 300 Daltons to 100,000 Daltons, where the liquid rubber is selected from the group consisting of an isoprene rubber, a butadiene rubber, and combinations thereof. Such adhesive compositions exhibit high cohesive integrity as well as high adhesion and peel properties.

Disclosed is an adhesive body. The adhesive body comprises a first substrate, a second substrate, and an adhesive layer that bonds the first substrate and the second substrate to each other. The haze of the first substrate and the second substrate is 5% or more. The adhesive layer contains a cured product of an adhesive composition containing: an organoborane complex; a compound having a radically polymerizable group; and a thermal acid generator.

The invention relates to an adhesive compound, an adhesive tape, a bonded assembly, a method for electrically releasing the bonded assembly, and the use of the adhesive compound for bonding components in electronic devices, automobiles, medical devices, and dental devices. The adhesive compound comprises at least one electrolyte and a base compound, wherein the base compound comprises at least one polydiene block copolymer and at least one adhesive resin.

A method for mounting, preferably bonding, an optical element (14) for microlithography to a mounting element (2) is presented and described, as is a mounting device (1) for mounting, preferably bonding, an optical element (14) for microlithography to a mounting element (2). The described method and mounting device are proposed to enable fast and precise mounting of an optical element (14) for microlithography to a mounting element (2), regardless of the diameter of the receiving opening (11) of the mounting element (2). An optical module for microlithography is also described.

The invention discloses a bonding method for low-glue-consumption high-strength plywood based on a lignin formaldehyde-free adhesive, and belongs to the technical field of adhesives. The lignin-based formaldehyde-free adhesive is adopted to adhere the veneers, the single-face adhesive applying amount does not exceed 80 g / m < 2 >, and after hot-pressing curing, the bonding strength of the prepared high-strength plywood is not lower than 0.7 MPa; the lignin-based formaldehyde-free adhesive is prepared by separating and treating a wood fiber raw material or sulfate lignin with a mixed solution. After the adhesive disclosed by the invention is used for bonding three layers of poplar veneers, the dry strength can reach 0.9-1.3 MPa, and the class II wet strength can reach 0.8-1.0 MPa; the elasticity modulus and the static bending intensity of the plywood are obviously higher than 5500 MPa and 32 MPa after the plywood is bonded with five layers of plywood; the plywood manufactured by the method disclosed by the invention is far better than industrial urea-formaldehyde resin adhesive bonded plywood, and the bonding strength of the plywood is equivalent to that of industrial phenolic aldehyde bonded plywood.

The present invention relates to a curable and debondable two-part thermally conductive adhesive composition comprising a first part comprising an epoxy resin; an electrolyte; and a thermally conductive filler; and a second part comprising a curing agent; and a thermally conductive filler, wherein the composition further comprises an electrically conductive filler. The composition according to the present invention can be used in battery modules of electric vehicles. And the composition according to the present invention facilitates faster repair and recycling of battery modules of electric vehicles.

The invention relates to a vapor barrier which is self-adhesive on both sides, comprising at least one moisture barrier layer, a carrier film, a first pressure-sensitive adhesive layer which is resistant to moisture, a second pressure-sensitive adhesive layer which is present on a side of the carrier film opposite the first pressure-sensitive adhesive layer, and a removable covering layer which has been applied to the second pressure-sensitive adhesive layer on a side of the self-adhesive vapor barrier facing the surroundings opposite the carrier film.

An object of the present invention is to provide a pressure-sensitive adhesive composition whose adhesive force is sufficiently reduced by applying a voltage even after storage in a high-temperature and high-humidity environment. The present invention relates to a pressure-sensitive adhesive composition containing a first polymer as a base polymer and an ionic liquid and further containing a second polymer having a glass transition temperature Tg of 40° C. to 180° C.

[Problem] To provide a novel polarizing plate that inhibits a poor external appearance of a polarizing film due to thermal contraction, and that excels in durability. [Solution] This polarizing plate comprises a polarizing film composed of a polyvinyl alcohol–based resin, and a supporting base material layered on at least one of the surfaces of the polarizing film with a bonding layer therebetween, said supporting base material being light-transmitting, and is characterized in that the bonding layer is composed of a molecular bonding agent that binds the polarizing film and the supporting base material together via a chemical bond.

The specification relates to a face (100, 200) for a direct thermal linerless label. The face (100, 200) comprises a release layer (101, 201), a thermal layer (102, 202), a pre-coat layer (103, 203), a base paper (104, 204), and a barrier layer (105, 205). The base paper (104, 204) has a grammage of from 50 to 90 g / m2 and the barrier layer (105, 205) has a coat weight (dry) of from 0.5 to 3.5 g / m2. Further, a direct thermal linerless label (210), a linerless label product roll comprising direct thermal linerless labels and a labelled item are provided. Also, use of the direct thermal linerless label (210) for labelling an item as well as a method of manufacturing a linerless label web for providing the linerless product roll are provided.

The invention provides a temporary bonding adhesive for low-temperature bonding, a preparation method and a bonding and de-bonding method. The temporary bonding adhesive for low-temperature bonding comprises the following components in parts by weight: 30-60 parts of a solvent; 5 to 20 parts of deionized water; 20 to 40 parts of self-crosslinking resin; 0.5-2 parts of a water repellent agent; 0.5-2 parts of an emulsifier; and 0.1-1 part of a leveling agent. The temporary bonding adhesive for low-temperature bonding can realize successful bonding at a low temperature lower than 100 DEG C, effectively avoids the damage of a wafer structure caused by a traditional high-temperature bonding process, can be decomposed and dissolved in a weak base aqueous solution to realize de-bonding after a bonding task is completed, and has no cleaning residue. The temporary bonding adhesive for low-temperature bonding has the remarkable advantages of low-temperature bonding, high thickness uniformity, no residue, easiness in de-bonding and the like, can meet the requirements of advanced semiconductor manufacturing and microelectronic packaging fields on bonding materials, and has a wide application prospect.

Provided herein are photocurable compositions that provide a balance of fast cure characteristics under exposure to radiation in the electromagnetic spectrum with a deep impressive cure transmission depth.

The invention relates to a method for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), comprising the steps of: arranging the connecting material (3) between the holding element (1) and the optical element (2), and curing the connecting material (3), wherein the connecting material (3) is irradiated with radiation (4) for curing the connecting material (3) for curing. The object of providing a method with which a holding element can be connected to an optical element in a process-reliable manner, which allows flexible optical designs and is cost-effective, is achieved in that the radiation (4) for curing the connecting material (3) is coupled into the connecting material (3) by means of a deflection device (5) for deflecting the radiation (4).The invention further relates to a holding element (1) for connection to an optical element (2) by means of a connecting material (3) and to a system (10) for connecting a holding element (1) to an optical element (2) by means of a connecting material (3), in particular for carrying out the method according to the invention.

The invention provides a photocuring adhesive, a preparation method thereof, a display screen and electronic equipment. The photocuring adhesive comprises 50 to 100 parts of prepolymer monomer, 1 to 10 parts of active monomer containing photosensitive group, 1 to 3 parts of cross-linking agent and 0.1 to 1 part of initiator. The photocuring adhesive is irradiated by ultraviolet light in a first wavelength range, and photodimerization reaction is carried out between photosensitive groups to generate a dimer; the dimer of the photocuring adhesive is subjected to dimerization reaction under the irradiation of ultraviolet light in a second wavelength range. According to the photocuring adhesive provided by the invention, the photodimerization reaction can be carried out between the photosensitive groups under the irradiation of the ultraviolet light in the first wavelength range to generate a dimer, so that the adhesive force of the adhesive is increased to a certain extent, and the photocuring adhesive is convenient to use; and the photocuring adhesive can also enable the dimer to be subjected to dimerization reaction under the irradiation of ultraviolet light in a second wavelength range, and the dimer is reduced to generate a reactant, so that the adhesive force of the adhesive is reduced, and the adhesive is convenient to strip.

Silicone roofing materials are provided. A roofing material comprises at least one of a plurality of particles, a silicone coating, a substrate, an adhesive layer, a release liner, or any combination thereof. The substrate is located between the silicone coating and the adhesive layer. The adhesive layer is located between the substrate and the release liner. The release liner covers at least a portion of the adhesive layer. The plurality of particles covers at least a portion of a surface of the silicone coating. Each of the plurality of particles has a surface. When the roofing material is installed on a roofing substrate, at least a portion of the surface of the plurality of particles is exposed to an environment. Related systems and related methods are also provided.

A pressure sensitive adhesive electrolyte (PSAE) was prepared by polymerizing: • 4 - 86 wt % of acrylate monomer (a1) from the group of the (meth)acrylic esters having 4 - 44 carbon atoms and containing at least one oxygen atom, • 0.5 - 50 wt % of acrylate monomer (a2) from the group of the (meth)acrylic esters or amides having 4-25 carbon atoms and containing at least one nitrogen atom, • 0.005 - 10 wt % of at least one initiator, wherein the at least one initiator is preferably a thermal initiator and / or a photoinitiator, especially preferably at least one photoinitiator, • 0 - 35 wt % of conducting salt, • 2 - 60 wt % of ionic liquid, • optionally further additives like plasticizer, antioxidant, tackifier, chain transfer agent, as for example 0 to 50 wt %, where optionally one or more of the components are added at least proportionally, as for example completely, only during or after the polymerization. With such PSAE conductivities according to the invention an ionic conductivity by test B of more than 10-6 S / cm up to at least 10-3 S / cm, can be achieved and the PSAE is suitable for applications like electrochromic cells / dimming foils and PSA with electrically debonding function.

The various implementations described herein include adhesive compositions for high-voltage focused ultrasound applications. In one aspect, an ultrasound transducer comprises a plurality of tiles. Each tile includes a first electrically conductive layer, a second electrically conductive layer, a plurality of transducer elements disposed between the first electrically conductive layer and the second electrically conductive layer, and a composite structural adhesive (a) disposed between the first electrically conductive layer and the second electrically conductive layer and (b) disposed between respective adjacent transducer elements of the plurality of transducer elements. The composite structural adhesive includes an epoxy resin, fumed silica, and a powder selected from the group consisting of: (i) micronized mica, (ii) bioactive glass powder, and (iii) micronized mica and bioactive glass powder.

The invention relates to the technical field of adhesives, in particular to a hot melt adhesive, a preparation method thereof and a fuel cell membrane electrode. The hot melt adhesive comprises a first bonding layer and a second bonding layer; the first bonding layer comprises polyester resin, a styrene thermoplastic elastomer, a grafted toughening agent, an epoxy chain extender and a first organic solvent; the second bonding layer comprises an ethylene-methyl acrylate copolymer, a copolyester hot melt adhesive, an ethylene-methyl acrylate-glycidyl methacrylate terpolymer, an epoxy ring-opening accelerant and a second organic solvent. The hot melt adhesive provided by the invention has a two-layer structure, can realize good bonding of PEN and PFSA, does not blister or crack after being soaked in a sulfuric acid aqueous solution with the pH value of 2 at 95 DEG C for more than 2000h, can maintain good bonding performance, and has no crystal point in a formed film.

Provided are: a curable resin composition that obtains a cured product having excellent adhesiveness, flexibility and dismantling properties; a cured product thereof; and a disassemblable adhesive material. A curable resin composition according to the present embodiment contains: an epoxy resin (A) having a specific structure and having an epoxy equivalent weight of 500-10,000 g / eq, an epoxy resin (B) having an epoxy equivalent weight of 100-300 g / eq, a curable functional group-containing compound (C), and thermally expandable particles (D). The curable functional group-containing compound (C) has a specific structure having a reversible bond.

The problem addressed by the present invention is to provide a method for manufacturing an optical system for a head-mounted display that allows realization of a head-mounted display that prevents unexpected blurring and bleeding and that is excellent in a sense of immersion. The problem is solved by a method for manufacturing an optical system for a head-mounted display, the method including a bonding step, which is a manufacturing step for a laminate formed by laminating a plurality of optical members and in which a plurality of optical members are bonded and fixed by laminating one optical member on a surface of another optical member, wherein the bonding step includes a step for applying a bonding layer forming composition to one optical member, a step for applying a bonding layer forming composition to another optical member, and a step for using a nip roller to laminate the one optical member and the another optical member such that the bonding layer forming compositions face each other.

The present invention is drawn to an adhesive or binder composition comprising, —a cationic polyelectrolyte, —an anionic polyelectrolyte, —a mineral salt selected from the group consisting of alkaline metal or alkaline earth metal halogenides, —a particulate mineral filler, —a water-soluble polyphenol comprising at least one polyhydroxylated aromatic ring structure, and —water It is also drawn to the use of such a composition as an adhesive, binder, coating or sealant in the construction industry.

Curable adhesive free-standing films and adhesive systems comprising such films are provided. In some embodiments, a curable adhesive free-standing film comprises a blend of: a) a first film-forming polymer or oligomer; b) a first species comprising first unsaturated free-radically polymerizable groups, which may be a) or a species other than a); c) a first transition metal cation; d) a reducing agent; and no oxidizing agent. In some embodiments, an adhesive system comprises: I) a first curable adhesive free-standing film as described preceding; and II) a second curable adhesive free-standing film comprising a blend of: e) a second film-forming polymer or oligomer; f) a second species comprising second unsaturated free-radically polymerizable groups, which may be e) or may be a species other than e); and g) an oxidizing agent. In some embodiments, the curable adhesive free-standing films may be pressure sensitive adhesives prior to cure. Methods of use are provided.

Provided are articles including a substrate and a curable composition comprising 50 to 81 weight percent of a liquid crystal monomer, 1 to 24 weight percent of a chain extender, 6 to 26 weight percent of a crosslinker, and 0 to 1.5 weight percent of an initiator, wherein the curable composition is adjacent to the substrate, and wherein the curable composition is in the form of a continuous or discontinuous layer. Also provided are articles including a substrate and a cured composition of a curable composition comprising 50 to 81 weight percent of a liquid crystal monomer, 1 to 24 weight percent of a chain extender, 6 to 26 weight percent of a crosslinker, and 0 to 1.5 weight percent of an initiator, wherein the curable composition is adjacent to the substrate, wherein the curable composition is in the form of a continuous or discontinuous layer, and wherein the cured composition comprises a liquid crystal elastomer comprising a monodomain.