The invention relates a process for the preparation of a bonded structure (4) comprising at least a first plastic part (1) having a first bonding surface (1a), said process comprising the step of a) treating at least part of a first bonding surface of said first plastic part with a flame of a propane-comprising gas, said propane-comprising gas being propane or a mixture comprising at least 50 wt. % of propane based on the weight of the propane-comprising gas with one or more gases selected from the group consisting of methane, ethane, butane, pentane, and hexane, wherein, during treatment with a flame of the propane-comprising gas, a flame is produced by burning a mixture of air and the propane-comprising gas, wherein the gas-to-air ratio is chosen such that the propane gas to oxygen volume ratio is equal to or less than 1:5.01, for example less than 1:5.00 and preferably at least 3.50 to obtain a first plastic part having a flame-treated first bonding surface.

The present invention relates to a primer composition that achieves excellent adhesion to poorly adhesive materials. Specifically, the present invention relates to a primer composition that includes (A) benzophenone, (B) a compound that has at least 2 benzene rings and a molecular weight of at least 190, and (C) a solvent.

The present invention is to provide a method for producing a laminate having excellent adhesion properties. An embodiment of the present invention is a method for producing a laminate, the method including: a step 1 of dry-treating a surface A of a plastic to obtain a dry-treated plastic having a surface B that has been dry-treated; a step 2 of wiping the surface B with a cleaning tool containing a composition for wiping, the composition containing at least one solvent selected from the group consisting of water and polar solvents, and a silane coupling agent, to obtain a cleaned plastic having a surface C that has been wiped with the cleaning tool; and a step 3 of applying at least one selected from the group consisting of adhesives and primers on the surface C to obtain a laminated body.

Provided is a pressure sensitive adhesive article comprising (a) a substrate (Sa) (b) in contact with the substrate (Sa), a layer (Lb) of a pressure sensitive composition (Cb) that comprises one or more acrylic polymer (POLb) having Tg of 20° C. or lower, and (c) in contact with the layer (Lb), a layer (Lc) that comprises, (i) one or more acrylic polymer (POLc1) having Tg of 20° C. or lower, and (ii) one or more acrylic tackifier polymer having Tg of −10° C. or higher. Also provided are a method of making the pressure sensitive adhesive article and a bonded article made by using the pressure sensitive adhesive article.

A cycloolefin polymer (COP) bonding method wherein a first material that is COP and a second material that is COP or glass are bonded. The method includes: a step of exposing at least a bonding surface of the first material to H.sub.2O plasma; and a step of mating the bonding surface of the first material and a bonding surface of the second material. According to the method, the cycloolefin polymer (COP) can be bonded to a target material without applying high pressure or high temperature, and without affecting the optical properties.

A film structure including: (a) at least one functionalized film layer, wherein the at least one film layer comprises a polar-reactive group polyolefin layer used as an internal layer in the film structure; and (b) a lamination adhesive composition present on, and in contact with, a least a portion of a surface of the internal layer; wherein the green tack value of the adhesive composition is greater than 0.772 Newtons/centimeter; a laminate including the above film structure bonded to a substrate layer; a process for producing the film structure; a process for producing the laminate; and a laminated article made from the above laminate.

An objective of the present invention is to provide a hot melt composition which (i) is excellent in adhesion and heat resistance, and (ii) is not transferred to a surface of a substrate when the substrates pre-coated with the hot melt composition are stacked and stored. The present invention relates to a hot melt composition comprising: (A) an amorphous poly-α-olefin, (B) a crystalline propylene-based polymer, and (C) a tackifier resin, wherein the amorphous poly-α-olefin (A) comprises (A1) an amorphous poly-α-olefin having a softening point of 150° C. or more.

Adhesive compositions are described that are suitable for securing building materials, such as TPO membrane roofing to a structural element, such as a roof deck. The adhesive compositions are very high-solids, wet-set adhesives that provide a peel strength that meets or exceeds industry standards, while requiring application to only one of two surfaces to be joined. The adhesive compositions comprise a liquid modifier with hydroxyl functionality, a chlorinated polyolefin and a silylated polymer. Methods of use are also disclosed.

A composition in the form of a solution or dispersion, comprising an anhydride-modified polyolefin, an anhydride-modified styrenic block copolymer, and an isocyanate-containing crosslinker, wherein the anhydride-modified polyolefin and anhydride-modified styrenic block copolymer are present in a total amount in the range of 7% to 18% by weight in total, based on the composition, and in a weight ratio of anhydride-modified polyolefin to anhydride-modified styrenic block copolymer which is in the range of 2:1 to 6:1; the weight ratio of isocyanate-containing crosslinker to the sum of anhydride-modified polyolefin plus anhydride-modified styrenic block copolymer is in the range of 0.2:1 to 0.5:1; and the solvent comprises a ketone as first solvent and an alkylbenzene or an alkane solvent. The compositions are useful for adhering TPO to TPU, polyester or PU. The composition can be used in a process of bonding a first part or coating of a TPO to a second part or coating of TPU, polyester or PU, using heat and optionally pressure, wherein the adhesion has improved peel strength.

A wiring member includes: a wire-like transmission member having a transmission wire body and a covering layer covering the transmission wire body; an adherend having an inorganic layer on a surface; and an adhesive agent intervening between the covering layer and the inorganic layer to be bonded to the covering layer and the inorganic layer, wherein the adhesive agent contains a chemical compound including at least one resin side functional group and at least one inorganic material side functional group in a molecular structure, the resin side functional group is chemically bonded to resin constituting the covering layer, and the inorganic material side functional group is chemically bonded to an inorganic material constituting the inorganic layer.