Abstract: Adhesive articles a methods of use are described comprising a layer of a curable adhesive composition that comprises 20 wt. % to 60 wt. % of a thermoplastic block copolymer; 5 wt. % to 60 wt. % of an epoxy resin; and 1 wt. % to 60 wt. % of a polyol; and inorganic particles disposed on a major surface of the article. In some embodiments, the block copolymer is an acrylic block copolymer. Typical inorganic particles include reflective (e.g. retroreflective) particles, traction particles (e.g. skid-resistance particles, anti-slip particles), and combinations thereof.

Abstract: An article is described comprising a first layer comprising a curable adhesive composition disposed on a second layer comprising polyvinyl acetal polymer. The curable adhesive composition comprises a thermoplastic polymer, such as an acrylic block copolymer; an epoxy resin; and preferably a polyol. Also described are methods and a curable adhesive composition.

Abstract: Curable and cured compositions as well as articles that contain the curable or cured compositions are provided. The curable composition comprises (a) a (meth)acrylic-based multiblock copolymer, (b) a random (meth)acylate copolymer comprising a monomeric unit having a pendant poly(alkylene oxide) group, wherein the monomeric unit having the pendant poly(alkylene oxide) group has a number average molecular weight of at least 300 Daltons, (c) an epoxy resin, and (d) a cationic photoinitiator. Articles containing the curable composition can be die-cut and can retain their dimensions with minimal oozing when stored under ambient conditions.

Abstract: Curable and cured compositions as well as articles containing the curable or cured compositions are provided. The cured compositions are typically a semi-structural or structural adhesive. Advantageously, the cured compositions can be removed (e.g., de-bonded) from the various surfaces of the articles after the useful lifetime of the articles, to correct misplacement of a part during manufacturing, or to repair the electronic device. The separation step occurs using a direct current electric potential across the cured composition.

Abstract: A curable composition comprising 20 wt. % to 60 wt. %, optionally 30 wt. % to 58 wt. %, or optionally 40 wt. % to 55 wt. % of an acrylic block copolymer, 5 wt. % to 60 wt. %, optionally 20 wt. % to 50 wt. %, or optionally 15 wt. % to 45 wt. %, of an epoxy resin; 1 wt. % to 60 wt. %, optionally 5 wt. % to 50 wt. %, or optionally 15 wt. % to 45 wt. %, of a polyol; and 0.5 wt. % to 10 wt. %, optionally 0.75 wt. % to 8 wt. %, or optionally 1 wt. % to 5 wt. %, of a curing agent. The curable composition may be used to prepare a tape that is initially soft (i.e., low-modulus), which enables a water-tight seal during an electronics assembly process at ambient temperatures, and then cures after UV-activation into a more rigid (i.e., higher modulus) tape that has a desirable balance of impact resistance (both tensile and shear impact), dynamic shear resistance, and pushout resistance.

Abstract: The present invention relates to a double-sided adhesive tape used for applications including the attachment of front glass for mobile devices. A core layer of the double-sided adhesive tape is prepared by adding an acrylic elastomer free of carbon-carbon double bonds while being highly miscible with an acrylic resin to an acrylic monomer(s) and performing curing, and thus can improve the impact resistance of the final double-sided adhesive tape. Also, the core layer may take a form of foam due to the introduced filler such as glass bubbles or organic microspheres, and thus can further contribute to improving the impact resistance of the final double-sided adhesive tape.

Abstract: There is provided a pressure sensitive adhesive foam comprising a foam comprising a non-syntactic foam blend of styrenic block copolymer and acrylic copolymer wherein the pressure-sensitive adhesive foam has an elongation of greater than 600%, wherein the non-syntactic foam blend is a hot melt formed foam. There is also provided multilayer pressure sensitive adhesive foams, pressure sensitive adhesive foam tapes and articles made using such pressure sensitive adhesive foam.

Abstract: The present invention relates to a double-sided adhesive tape used for applications including the attachment of front glass for mobile devices. A core layer of the double-sided adhesive tape is prepared by adding an acrylic elastomer free of carbon-carbon double bonds while being highly miscible with an acrylic resin to an acrylic monomer(s) and performing curing, and thus can improve the impact resistance of the final double-sided adhesive tape. Also, the core layer may take a form of foam due to the introduced filler such as glass bubbles or organic microspheres, and thus can further contribute to improving the impact resistance of the final double-sided adhesive tape.

Abstract: The present disclosure relates to a pressure sensitive adhesive comprising: a) a multi-arm block copolymer of the formula Qn-Y, wherein: (i) Q represents an arm of the multi-arm block copolymer and each arm independently has the formula G-R, (ii) n represents the number of arms and is a whole number of at least 3, and (iii) Y is the residue of a multifunctional coupling agent, wherein each R is a rubbery block comprising a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or combinations thereof; and each G is a glassy block comprising a polymerized monovinyl aromatic monomer; b) a polymeric plasticizer having a weight average molecular weight Mw comprised between 10.000 and 100.

Abstract: The methods of preparing hot melt processable pressure sensitive adhesives include combining an elastomeric (meth)acrylate random copolymer and a discontinuous fibrous material in a hot melt mixing apparatus, and mixing to form a hot melt processable pressure sensitive adhesive. The elastomeric (meth)acrylate random copolymer may be contained within a thermoplastic pouch, and the hot melt mixture may include a relatively high level of tackifying resin. The elastomeric (meth)acrylate random copolymer may contain branching agents and photosensitive crosslinking agents. The hot melt processable pressure sensitive adhesives can be used to prepare transfer tapes.

Abstract: An antistatic pressure sensitive adhesive composition, useful in electronic and optical display applications, comprising an antistatic agent and a first block copolymer comprising at least two hard A block polymeric units each independently having a Tg of at least 50° C., and at least one soft B block (meth)acrylic polymeric unit having a Tg no greater than 20° C. The composition can comprise a second block copolymer. Articles comprising an antistatic pressure sensitive adhesive composition adjacent a first surface of a substrate.

Abstract: A method of making a pressure-sensitive hot melt adhesive. The method includes extruding a melt composition that includes a polymer, wherein the polymer has acidic groups covalently attached thereto, and a metal salt hydrate, wherein the metal salt hydrate has a melting point that is less than the maximum processing temperature.

Abstract: There is provided a pressure sensitive adhesive foam comprising a foam comprising a non-syntactic foam blend of styrenic block copolymer and acrylic copolymer wherein the pressure-sensitive adhesive foam has an elongation of greater than 600%, wherein the non-syntactic foam blend is a hot melt formed foam. There is also provided multilayer pressure sensitive adhesive foams, pressure sensitive adhesive foam tapes and articles made using such pressure sensitive adhesive foam.

Abstract: This disclosure provides (meth)acryloyl pressure-sensitive adhesive foams and foam articles having one or more of the following properties: small cells, uniform cell sizes, pressure sensitive adhesive compositions, compliance to irregular substrates and vibration damping, and shock absorbing properties.

Abstract: A crosslinkable, pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.

Abstract: The methods of preparing hot melt processable pressure sensitive adhesives include combining an elastomeric (meth)acrylate random copolymer and a discontinuous fibrous material in a hot melt mixing apparatus, and mixing to form a hot melt processable pressure sensitive adhesive. The elastomeric (meth)acrylate random copolymer may be contained within a thermoplastic pouch, and the hot melt mixture may include a relatively high level of tackifying resin. The elastomeric (meth)acrylate random copolymer may contain branching agents and photosensitive crosslinking agents. The hot melt processable pressure sensitive adhesives can be used to prepare transfer tapes.

Abstract: The methods of preparing hot melt processable pressure sensitive adhesives include combining an elastomeric (meth)acrylate random copolymer contained within a thermoplastic pouch and greater than 50 parts by weight per 100 parts by weight of hot melt processable elastomeric (meth)acrylate random co-polymer of at least one tackifying resin in a hot melt mixing apparatus, and mixing to form a hot melt processable pressure sensitive adhesive. The elastomeric (meth)acrylate random copolymer may contain branching agents and photosensitive crosslinking agents. The hot melt processable pressure sensitive adhesives can be used to prepare transfer tapes.

Abstract: A method of making a pressure-sensitive hot melt adhesive. The method includes extruding a melt composition that includes a polymer, wherein the polymer has acidic groups covalently attached thereto, and a metal salt hydrate, wherein the metal salt hydrate has a melting point that is less than the maximum processing temperature.

Abstract: This disclosure provides (meth)acryloyl pressure-sensitive adhesive foams and foam articles having one or more of the following properties: small cells, uniform cell sizes, pressure sensitive adhesive compositions, compliance to irregular substrates and vibration damping, and shock absorbing properties.

Abstract: An antistatic pressure sensitive adhesive composition, useful in electronic and optical display applications, comprising an antistatic agent and a first block copolymer comprising at least two hard A block polymeric units each independently having a Tg of at least 50° C., and at least one soft B block (meth)acrylic polymeric unit having a Tg no greater than 20° C. The composition can comprise a second block copolymer. Articles comprising an antistatic pressure sensitive adhesive composition adjacent a first surface of a substrate.