Abstract: The compositions comprise an acid functional monomer or acid-functional copolymer (or conjugate base thereof), and an imidazole compound (or conjugate acid thereof).

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: Presently described are curable dental compositions comprising a polymerizable ionic liquid. The polymerizable ionic liquid comprises one or more ethylenically unsaturated (e.g. free-radically polymerizable) groups. Various embodiments of curable dental compositions are described. In some embodiments, the polymerizable ionic liquid is a monofunctional polymerizable ionic liquid comprising an ethylenically unsaturated group. In other embodiments, the polymerizable ionic liquid is a multi-functional polymerizable ionic liquid comprising at least two ethylenically unsaturated groups. The curable dental compositions describe herein can be utilized as dental primers, dental adhesives, dental sealants, and dental composites. In many embodiments, the curable dental compositions further comprise an initiator such as a photoinitiator.

Abstract: Described is a pre-adhesive, curable composition comprising an acid-functional (meth)acrylate copolymer and a novel (meth)acryloyl-aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive composition.

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: A multifunctional polymerizable ionic liquid is described comprising an anion and a cationic group having at least two ethylenically unsaturated polymerizable groups, each bonded to the cationic group via a divalent non-alkyl linking group. The multifunctional linking groups independently comprise a heteroatom such as oxygen or nitrogen. The linking groups may independently comprise one or more linkages such as an amide, urea, or ether linkage and more typically a urethane or ester linkage. The ethylenically unsaturated polymerizable groups are typically (meth)acrylate groups. Coatings and coated articles are also described.

Abstract: Semiconductor devices, methods of making semiconductor devices, and coating compositions that can be used to provide a semiconductor layer within a semiconductor device are described. The coating compositions include a small molecule semiconductor, an insulating polymer, and an organic solvent that can dissolve both the small molecule semiconductor material and the insulating polymer. The small molecule semiconductor is an anthracene-based compound (i.e., anthracene derivative) substituted with two thiophene groups as well as with two silylethynyl groups.

Abstract: Presently described are curable compositions comprising a mixture of at least one (e.g. free-radically) polymerizable ionic liquid and at least one other ethylenically unsaturated monomer, oligomer, or polymer. The polymerizable ionic liquid is characterized as having an air to nitrogen curing exotherm ratio of at least 0.70. Also described are articles and methods of making articles from such curable compositions. A monofunctional polymerizable ionic liquid is also described comprising a non-polymerizable substituted imidazolium cationic group and a polymerizable sulfonate anion.

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

Abstract: The compositions comprise an acid functional monomer or acid-functional copolymer (or conjugate base thereof), and an imidazole compound (or conjugate acid thereof).

Abstract: A pre-adhesive syrup copolymer composition comprising an acid functional acrylate solute copolymer, a monomer solvent mixture, and a polyaziridine crosslinking agent is disclosed.

Abstract: Described is a pre-adhesive, curable composition comprising an acid-functional (meth)acrylate copolymer and a novel (meth)acryloyl-aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive composition.

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

Abstract: Semiconductor material, compositions containing the semiconductor material, semiconductor devices containing the semiconductor material, and methods of making semiconductor devices containing the semiconductor material are described. More specifically, the semiconductor material is a small molecule semiconductor that is an anthracene-based compound (i.e., anthracene derivative) that is substituted with two silylethynyl groups as well as two electron donating groups.

Abstract: A photoactive compound that is the Michael addition reaction product of an aziridine compound and a photoinitiator-functional (meth)acrylate is described. The compound can be used to crosslink (meth)acrylic polymers via a hydrogen abstracting or an alpha-cleavage mechanism.

Abstract: Semiconductor devices, methods of making semiconductor devices, and coating compositions that can be used to provide a semiconductor layer within a semiconductor device are described. The coating compositions include a small molecule semiconductor, an insulating polymer, and an organic solvent that can dissolve both the small molecule semiconductor material and the insulating polymer. The small molecule semiconductor is an anthracene-based compound (i.e., anthracene derivative) substituted with two thiophene groups as well as with two silylethynyl groups.

Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.

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 field effect transistor includes a thin layer of discontinuous conductive clusters between the gate dielectric and the active layer. The active layer can include an organic semiconductor or a blend of organic semiconductor and polymer. Metals, metal oxides, predominantly non-carbon metallic materials, and/or carbon nanotubes may be used to form the layer of conductive clusters. The conductive clusters improve transistor performance and also facilitate transistor fabrication.

Abstract: A photoactive compound that is the Michael addition reaction product of an aziridine compound and a photoinitiator-functional (meth)acrylate is described. The compound can be used to crosslink (meth)acrylic polymers via a hydrogen abstracting or an alpha-cleavage mechanism.