Abstract: Adhesive articles include a release liner and an adhesive layer disposed on the release surface of the release liner. The adhesive layer is the reaction product of a reaction mixture of at least 2 alkyl (meth)acrylate monomers with alkyl groups that have at least 4 carbon atoms, are hydroxyl-functional alkyl groups, or are a heteroalkyl groups; at least one multi-functional (meth)acrylate; at least one surface-modified fumed silica; and at least one initiator. The adhesive layer has a variety of desirable properties including a Tg of less than ?35° C. as measured by DMA (Dynamic Mechanical Analysis), a storage modulus (G?) at ?20° C. of less than 200 kiloPascals at 1 Hz and is optically clear.

Abstract: Compositions are described comprising at least 20 wt. % of block copolymer comprising polyvinyl aromatic end blocks and a polyisoprene midblock and at least one ethylenically unsaturated monomer comprising one or more groups selected from (meth)acryl or vinyl ether. In one embodiment, the monomer has a Log P according to Moriguchi's method of at least 2.2. In another embodiment, the monomer is a multifunctional aromatic ethylenically unsaturated monomer. The composition is typically a (e.g. pressure sensitive) adhesive. Also described are methods of making an article, adhesive articles, and methods of bonding.

Abstract: An adhesive composition are articles are described. The adhesive composition comprises a polyisobutylene polymer component; up to 20 wt.-% of a polyolefin copolymer comprising polymerized units of an acidic monomer; and optionally, at least one tackifier. The polyolefin copolymer typically comprises C2-C4 alkylene units. The polyolefin copolymer comprises polymerized units of a carboxylic acid, or unsaturated derivative thereof. In some embodiments, the polyolefin copolymer has a melting temperature ranging from 50 to 150° C. In some embodiments, the polyolefin copolymer has an acid number of less than 40, 35, 30, or 25 mgKOH/g.

Abstract: Compositions, such as adhesive compositions, are described comprising a cleavable crosslinker. The composition further comprise an epoxy resin and/or at least one other free-radically polymerizable monomer, oligomer, polymer, or combination thereof. Also described are adhesive articles and methods of bonding.

Abstract: Release liners are provided, including a substrate having a first major surface and an opposing second major surface and a release coating disposed on at least a portion of the first major surface of the substrate. The release liners transmit a greater average of incident light over a wavelength range from 470 nanometers (nm) to 530 nm than over a wavelength range from 400 nm to 460 nm. Adhesive articles are also provided. Adhesive articles include a release liner and an optically clear adhesive disposed on at least a portion of the release liner.

Abstract: An adhesive composition is described comprising a polyisobutylene polymer component; and up to 30 wt.-% of at least one aliphatic multifunctional component comprising at least two ethylenically unsaturated groups selected from (meth)acryl or vinyl ether. The monomer comprises a hydrocarbon moiety with greater than 12 contiguous carbon atoms. When the hydrocarbon moiety is branched, the hydrocarbon moiety comprises side chains with at least two carbon atoms. The aliphatic multifunctional component is sufficiently compatible such that crosslinked adhesive composition at a thickness of 20 microns has a haze of less than 3%. Also described are adhesive articles.

Abstract: Provided are crosslinkable compositions comprising a (meth)acrylate polymer, where the polymer has a glass transition temperature no greater than 30° C.; a crosslinking agent, the crosslinking agent comprising a photo-active Type II photoinitiator and a polymerizable group selected from the group consisting of (meth)acrylate, allyl, and combinations thereof; and a UV absorbing material represented by the structure (I) where each of X1, X2, X3, and X4 is independently a hydrogen atom, a hydrocarbyl group including 1 to 15 carbon atoms, preferably 12 carbon atoms, or a heterohydrocarbyl group including 1 to 15 carbon atoms, preferably 12 carbon atoms.

Abstract: Adhesive compositions including 20 wt. % to 80 wt. % of a polymer selected from the group consisting of a radial styrene-isoprene block copolymer, a radial styrene-butadiene block copolymer, and combinations thereof, and 3 wt. % to 80 wt. % of a liquid rubber having a molecular weight of 300 Daltons to 100,000 Daltons, where the liquid rubber is selected from the group consisting of an isoprene rubber, a butadiene rubber, and combinations thereof. Such adhesive compositions exhibit high cohesive integrity as well as high adhesion and peel properties.

Abstract: The present invention is a pressure sensitive adhesive including a polyurethane polymer comprising a reaction product of an isocyanate, a (meth) acrylate-containing alcohol having at least one (meth)acrylate group and at least one alcohol group, and a polyol component having a defined solubility parameter of less than about 10; an oligomer comprising a multifunctional (meth)acrylate; and a photoinitiator. A peel adhesion of the pressure sensitive adhesive to glass decreases at least about 20% after being exposed to light radiation.

Abstract: The present invention is a pressure sensitive adhesive including the reactive product of a copolymer of an alkyl(meth)acrylate, a multifunctional cross-linker, and at least one of an amine-containing (meth)acrylate and a blocked isocyanate-containing (meth)acrylate.

Abstract: Crosslinkable compositions including a (meth)acrylate polymer comprising an alkyl (meth)acrylate monomer; an acylphosphine oxide photoinitiator; and a crosslinking monomer, the crosslinking monomer comprising at least two terminal groups selected from the group consisting of allyl, methallyl, or combinations thereof. Methods of preparing such crosslinkable compositions and articles including such crosslinkable compositions are disclosed.

Abstract: An article comprising a first component having a first electrically conductive surface and a second component having a second surface. An adhesive composition comprising a zwitterionic polymer is disposed between the first electrically conductive surface and second surface and joins the first component to the second component. The effort required to separate the first component from the second component, as measured by work of adhesion per surface area, is reduced by application of a DC electric potential across the adhesive composition.

Abstract: An article comprising a first component having a first electrically conductive surface and a second component having a second surface. An adhesive composition comprising a cured polymerizable ionic liquid is disposed between the first electrically conductive surface and second surface and joins the first component to the second component. The polymerizable ionic liquid comprises an acid functional monomer and the conjugate acid of an imidazole compound. The effort required to separate the first component from the second component, as measured by work of adhesion per surface area, is reduced by application of a DC electric potential across the adhesive composition.

Abstract: A crosslinkable composition, a crosslinked composition formed upon exposure of the crosslinkable composition to ultraviolet radiation or ionizing radiation, articles containing these compositions, and methods of making the articles are described. The crosslinkable compositions contain two different (meth)acrylate copolymers and can be applied to a substrate using an extrusion process. While being extruded, the crosslinkable compositions advantageously are resistant to crosslinking and/or increased molecular weights. The crosslinked compositions can function as adhesive compositions that are particularly well suited for use in electronic devices.

Abstract: The present invention is an oil-resistant adhesive composition including a hydroxy alkyl (meth)acrylate having an alkyl group containing 2 to 4 carbons, a short alkyl (meth)acrylate having an alkyl group containing 6 or less carbons, and a photo-initiator. After the adhesive composition is soaked in oleic acid at room temperature for 7 days, the adhesive composition has an expansion percent of less than about 10%.

Abstract: The present invention is an assembly layer for a flexible device. The assembly layer is derived from precursors that include about 0 to about 50 wt % C1-C9 alkyl(meth)acrylate, about 40 to about 99 wt % C10-C24 (meth)acrylate, about 0 to about 30 wt % hydroxyl (meth)acrylate, about 0 to about 10 wt % of a non-hydroxy functional polar monomer, and about 0 to about 5 wt % crosslinker.

Abstract: A crosslinkable composition, a crosslinked composition formed upon exposure of the crosslinkable composition to ultraviolet radiation or ionizing radiation, articles containing these crosslinkable or crosslinked compositions, and methods of making the articles are described. The crosslinkable compositions contain two different (meth)acrylate polymers and can be applied to a substrate using an extrusion process. While being extruded, the crosslinkable compositions advantageously are resistant to crosslinking and/or significantly increasing in molecular weight. The crosslinked compositions can function as either a pressure-sensitive adhesive composition or a heat bondable adhesive composition and are particularly well suited for use in electronic devices.

Abstract: Core-sheath filaments comprising a non-tacky sheath, the non-tacky sheath exhibiting a melt flow index of less than 15 grams per 10 minutes and an adhesive core, the adhesive core comprising 10 wt.% to 99 wt.% of a polymer and a phenolic resin, where the polymer comprises an isoprene moiety, the phenolic resin comprises an alkyl-substituted phenol, and the phenolic resin is substantially free of halogens. Cured adhesive composition comprising the disclosed core-sheath filaments and methods of making such core-sheath filaments.

Abstract: Described are viscoelastic damping materials and constructions which may demonstrate low temperature performance and adhesion and which may be used in making vibration damping composites. Viscoelastic damping materials and constructions may include polymers or copolymers of monomers according to formula I: CH2?CHR1—COOR2??[I] wherein R1 is H, CH3 or CH2CH3 and R2 is a branched alkyl group containing 12 to 32 carbon atoms.

Abstract: Pressure-sensitive adhesive compositions are described comprising polymerized units of (meth)acrylate monomer. Also described are articles comprising such pressure-sensitive adhesive composition.