Abstract: A pressure sensitive adhesive composition is described comprising a polyisobutylene polymer having a first functional group and an acrylic polymer having a second functional group present in the acrylic polymer backbone. The first and second functional groups form a hydrogen bond. In some embodiments, the adhesive composition further comprises a crosslinker that covalently crosslinks the second functional group(s) present in the polymer backbone of the acrylic polymer. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.

Abstract: A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.

Abstract: Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

Abstract: Multi-phase blended pressure sensitive adhesives are described. The adhesives include a first phase containing at least one non-halogenated polyisobutylene material and a second phase comprising a thermoplastic elastomer. Exemplary thermoplastic elastomers include polyolefins, styrenic block copolymers, acrylic polymers and silicone polymers. Crosslinked adhesives, including those crosslinked with actinic radiation are also described.

Abstract: The disclose provides pressure-sensitive adhesives and adhesive sealants prepared from modified, crosslinked isobutylene copolymers, and tape articles prepared therefrom.

Abstract: Pressure-sensitive adhesives are prepared from (meth)acrylate esters of 2-alkyl alkanols. The adhesives are characterized by exhibiting an overall balance of adhesive and cohesive characteristics and exceptional adhesion to low surface energy substrates.

Abstract: Pressure-sensitive adhesives are prepared from (meth)acrylate esters of 2-alkyl alkanols. The adhesives are characterized by exhibiting an overall balance of adhesive and cohesive characteristics and exceptional adhesion to low surface energy substrates.

Abstract: Adhesive compositions and articles that contain these adhesive compositions are described. More particularly, the adhesive compositions include (a) a block copolymer prepared from monoethylenically unsaturated monomers and (b) a tackifier mixture. The adhesives compositions can be adhered to many substrates including those having a non-polar surface.

Abstract: Adhesives suitable for use with low surface energy materials are described. The adhesive contain an acrylic copolymer, a high glass transition temperature tackifier and a low glass transition temperature tackifier. The acrylic copolymer is the reaction product of a first alkyl(meth)acrylate having at least 5 carbon atoms in the alkyl group, a second alkyl(meth)acrylate having 1 to 4 carbon atoms in the alkyl group, and a vinyl carboxylic acid. Both tackifiers have a Tg greater than the Tg of the acrylic copolymer. The high glass transition temperature tackifier has a Tg of at least 20° C. and the low glass transition temperature tackifier has a Tg of less than 0° C.

Abstract: Acrylic adhesives containing an acrylic polymer and a plasticizer are provided. The acrylic polymer includes copolymerized monomers of a first alkyl acrylate, a second alkyl acrylate, and a vinyl carboxylic acid. The alkyl group of the first alkyl acrylate has at least 4 carbon atoms, and the alkyl group of the second alkyl acrylate has 1-3 carbon atoms. The plasticizers include a di-ethoxylated tertiary amine segment.

Abstract: Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

Abstract: Tamper indicating articles that include a surface-feature image-generating layer and an adhesive layer are described. The surface-feature image-generating layer generates a visible, surface-feature-generated image upon exposure to light. The intensity of the surface-feature-generated image is reduced when taped-over. Single-image and dual-image tamper indicating articles are also described, including buried dual-image and adjacent dual-image tamper indicating articles.

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: A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Abstract: Acrylic adhesives containing an acrylic polymer and a plasticizer are provided. The acrylic polymer includes copolymerized monomers of a first alkyl acrylate, a second alkyl acrylate, and a vinyl carboxylic acid. The alkyl group of the first alkyl acrylate has at least 4 carbon atoms, and the alkyl group of the second alkyl acrylate has 1-3 carbon atoms. The plasticizers include a di-ethoxylated tertiary amine segment.

Abstract: A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Abstract: Hot-melt processable adhesive, such as pressure-sensitive-adhesive (PSA) or heat-activatable adhesive, compositions of the present invention possess a broad formulation latitude and adequate cohesive strength after application for use in high performance applications. Hot-melt processable adhesives of the invention comprise at least one block copolymer comprising at least two A blocks and at least one B block. The A and B blocks are derived from monoethylenically unsaturated monomers, which monomers result in saturated polymer backbones without the need for subsequent hydrogenation upon their polymerization. Preferably, the block copolymer is a (meth)acrylate block copolymer.

Abstract: Methods of applying a pressure sensitive adhesive to a substrate and adhering substrates together that includes applying a latent, over-tackified, adhesive to a substrate and applying a plasticizing agent to activate the latent, over-tackified, adhesive to form a pressure sensitive adhesive.

Abstract: A hydrophilic, pressure-sensitive adhesive composition comprising a swellable adhesive polymer, a swelling agent, herbal medicines, and optionally a modifying polymer in an amount sufficient to form a cohesive, pressure-sensitive adhesive composition. The composition is useful as a delivery device for herbal medicine and other active ingredients to or through skin. A method of preparation of the composition is also disclosed.

Abstract: A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom, such as a polymer foam article having a substantially smooth surface prepared by melt-mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.