An azobenzene derivative, a preparation method of the azobenzene derivative, an azophenyl light control reversible adhesive, and a method of using the azophenyl light control reversible adhesive are disclosed. The azobenzene derivative has a molecular structure as P1 or P2. In the abovementioned preparation method, the azobenzene derivative P1 or P2 is obtained from an esterification reaction of an azophenyl group, 3,4,5-tripentyloxybenzoic acid or 3,4,5-tri(dodecyloxy)benzoic acid, and 2,2′-dihydroxy-1,1′-binaphthol. The melting point of the azobenzene derivative P1 or P2 is modified commonly by alkyl chains and binaphthol to be slightly higher than room temperature.

The present invention relates to an adhesive system, comprising an adhesion promoter composition, containing at least one mercaptosilane, at least one polysilane, at least one transition metal complex comprising substantially only monodentate ligands, and at least one nonalcoholic solvent, and an adhesive, wherein the adhesive, within an hour after application and storage at 23° C. and 50% relative air humidity, has a tensile shear strength of at least 3 MPa, as measured according to ISO 4587, and/or, within an hour after application and storage at 23° C. and 50% relative air humidity, has at least 50%, preferably at least 60%, of the tensile shear strength achievable after application and storage for 7 days at 23° C. and 50% relative air humidity, as measured according to ISO 4587. The adhesive system according to the invention is suited, for example, for bonding glass panes in transport means and also builds up strength very quickly at low temperatures. The present invention further relates to an adhesion promoter system having a liquid container comprising a manually actuable output apparatus, and an adhesion promoter composition, as disclosed above.

The polyvinyl acetal resin composition includes: a polyvinyl acetal resin, a plasticizer, a metal salt compound, and a benzotriazole-based compound, wherein the metal salt compound is a metal salt of hydroxyl carboxyl acid having two to sixteen carbon atoms, wherein the metal salt compound is included in an amount of less than 0.05 wt % based on a total weight of the polyvinyl acetal resin composition, and wherein the metal salt compound is included in an amount of 16 parts by weight or less based on the benzotriazole-based compound of 100 parts by weight.

A module includes a first member with a first surface, a second member with a second surface opposed to the first surface, a first bonding agent, and a second bonding agent. The first bonding agent is provided in a first region on the second surface, and bonds the second member to the first surface with first bonding strength allowing the second member to be retained on the first surface. The second bonding agent is provided in a second region on the second surface, and bonds the second member to the first surface with second bonding strength allowing the second member to be retained on the first surface. Second curing time taken before the second bonding agent exhibits the second bonding strength by curing in a predetermined atmosphere is shorter than first curing time taken before the first bonding agent exhibits the first bonding strength by curing in the predetermined atmosphere.

The polyvinyl acetal resin composition includes: a polyvinyl acetal resin, a plasticizer, a metal salt compound, and a benzotriazole-based compound, wherein the metal salt compound is a metal salt of hydroxyl carboxyl acid having two to sixteen carbon atoms, wherein the metal salt compound is included in an amount of less than 0.05 wt % based on a total weight of the polyvinyl acetal resin composition, and wherein the metal salt compound is included in an amount of 16 parts by weight or less based on the benzotriazole-based compound of 100 parts by weight.

A method for bonding together two substrates includes providing a molecular glue including glue molecules, each of the glue molecules having at least two —O—Si or —O—Al moieties; reacting a surface of a first substrate with the molecular glue to attach the glue molecules to the surface of the first substrate by at least one of the —O—Si or —O—Al moieties; and reacting a surface of a second substrate with the molecular glue to attach the glue molecules to the surface of the second substrate by at least another one of the —O—Si or —O—Al moieties. The method can be used for a variety of applications including manufacturing a vapor cell.

A composite film for use in an LED wafer-level packaging process to facilitate adhesion of an LED wafer to a carrier and an LED wafer-level packaging process carried out with a heating process are introduced. The composite film includes a substrate including a first surface and a second surface; a heat-resisting pressure-sensing adhesive formed on the first surface of the substrate to allow the LED wafer to be adhered to the substrate; and a heat-resisting thermally-visbreaking pressure-sensing adhesive formed on the second surface of the substrate to allow the substrate to be adhered to the carrier. The heat-resisting thermally-visbreaking pressure-sensing adhesive undergoes the heating process to reduce its adhesiveness strength; thus, upon completion of the LED wafer-level packaging process, the carrier can be detached from the composite film easily.

A high-frequency dielectric heating adhesive sheet includes an adhesive layer. The adhesive layer contains a thermoplastic resin having a reactive site, a dielectric filler that generates heat upon application of a high-frequency electric field, and a silane coupling agent.

The present disclosure is directed to a composite material comprising a thermoplastic adhesive and nanotubes oriented in the in-plane orientation. In additional aspects, the disclosure includes a laminated armor material comprising the composite and armor materials.

A glass with attached jewel device has an item of drinkware such as a glass, optically clear adhesive, and a jewel piece. The glass has a base, a wall extending up from the base, and a rim opposite the base. The wall curves upon two axes with different radii. The piece fits upon the curved wall and the adhesive adheres the piece to the wall. The piece has an outer surface and an opposite inner surface. The inner surface has at least three pads and a plurality of dimples that receive the adhesive and provide additional surface area making for a strong bond of the piece to the glass or drinkware. The adhesive fills the gap upon the edges of the piece to the wall. Alternatively, the adhesive covers the inner surface. The adhesive cures by illumination as from ultraviolet light.