Abstract: An adhesive composition is described comprising at least one cyclic imide monomer comprising an unsaturated carbonyl. The adhesive composition is a polymerizable composition or a polymerized composition. The polymerizable adhesive composition may comprise at least one monomer, oligomer, polymer, or a combination thereof comprising ethylenically unsaturated groups and/or an epoxy resin. The cyclic imide monomer may comprise an imide group with an ?, ?-unsaturated carbonyl in a heterocyclic ring wherein the ring comprises at least 6 covalently bonded atoms. Also described are methods of forming an adhesive coated substrate and articles.

Abstract: Adhesive compositions, articles, and methods are described. The electronic may comprise: i) a conductive metallic substrate; ii) an insulating resin layer; and iii) and an adhesive layer disposed between the substrate and insulating resin layer. The adhesive layer comprises at least 50 wt. % of polyimide resin comprising maleimide moieties; and at least 0.25 wt. % of an amine compound. In some embodiments, the conductive metallic substrate comprises copper, such as copper traces.

Abstract: Coatable metal-polymer hybrid compositions include a polyoxometalate and a siloxane-based polyamine. The coatable composition, upon coating forms a layer, that is optically transparent and has a refractive index of at least 1.42. The polyoxometalate and the amino groups of the siloxane-based polyamine form crosslinks via an acid-base interaction. The layer may also include a fluid.

Abstract: A free-radically polymerizable monomer represented by formula (I). Each R1 independently represents H or a methyl group. Each R2 independently represents an alkyl group having from 1 to 6 carbon atoms or phenyl. Each Z independently represents a divalent alkylene group having from 3 to 12 carbon atoms. Q represents a divalent alkylene group having from 1 to 36 carbon atoms. A free-radically polymerizable composition comprises the free-radically polymerizable monomer and a free-radical polymerization initiator. A method of using the free-radically polymerizable composition. an at least partially polymerized composition, and an electronic article are also disclosed.

Abstract: A dihaloorganosilane is represented by the formula (I): Each X independently represents Cl, Br, or I. Each Ar1 independently represents a phenylene group optionally substituted by 1 to 4 alkyl groups selected from methyl or ethyl. Each R1 independently represents an alkylene group having from 2 to 18 carbon atoms. Each R2 independently represents methyl or ethyl. Each R3 independently represents an alkylene group having from 1 to 18 carbon atoms. Each R4 independently represents an alkylene group having from 2 to 18 carbon atoms, and n is an integer in a range of 0 to 5, inclusive. Ionic organosilanes preparable from the dihaloorganosilanes are represented by the formula (II): Membrane compositions and membranes containing the ionic organosilanes are also disclosed.

Abstract: Low dielectric constant curable compositions include a first alkyl (meth)acrylate monomer with 12 or more carbon atoms, a crosslinking monomer, a copolymeric additive of a polyisobutylene-polysiloxane block copolymer, and at least one initiator. The curable composition is solvent free and inkjet printable. Upon curing the curable composition forms a non-crystalline, optically clear layer with a dielectric constant of less than or equal to 3.0 at 1 MegaHertz.

Abstract: Cationic copolymers having pendant N-allylimidazolium-containing groups are provided. The cationic copolymers can be used, for example, to provide anion exchange membranes for use in electrochemical cells such as fuel cells, electrolyzers, batteries, and electrodialysis cells. The anion exchange membranes typically have good mechanical properties and ionic conductivity.

Abstract: A crosslinkable composition comprises components: (a) at least one polymer comprising isobutylene monomer units: and (b) at least one star polymer represented by the formula SiRn(OSi(R)2-PIB-T)4-n. Each R independently represents a hydrocarbyl group having from 1 to 6 carbon atoms. Each PIB independently represents a divalent polymeric segment comprising isobutylene monomer units. Each T independently represents a monovalent terminal group, and n is 0 or 1. An adhesive comprising a crosslinked reaction product of the crosslinkable composition and a method of making the adhesive are also disclosed.

Abstract: A free-radically polymerizable copolymer comprising divalent monomeric units: a); b); and optionally c). Each R1 independently represents an alkyl group having from 1 to 8 carbon atoms. R2 represents H or a methyl group. Z represents an alkylene group having 2 to 12 carbon atoms. X? represents a non-interfering anion. Free-radically polymerizable compositions containing the same are also disclosed as well as the corresponding polymerized compositions.

Abstract: A monomer represented by the formula: (I) wherein: each R1 independently represents an alkyl group having from 1 to 4 carbon atoms; Z represents an alkyl group having 1 to 40 carbon atoms, or a group represented by the formula (II) wherein: each L independently represents a divalent alkylene group having 1 to 12 carbon atoms, each n independently represents 0, 1, or 2; and p represents 0 or 1. A polymerizable composition includes the monomer and can be polymerized to form a polymerized composition. Polymers prepared by polymerization of the monomer are also disclosed.

Abstract: A reaction product of components comprising: an alicyclic hydrocarbon containing at least one 5- or 6-membered ring and having at least two carbon-carbon multiple bonds; and a first organosilane represented by the formula. Each R independently represents an aliphatic hydrocarbyl group having from 1 to 8 carbon atoms. Z represents —(CH2)y— or —(OSiR2)y— and y is an integer from 1 to 18. A method of making the reaction product and curable compositions containing the reaction product are also disclosed.

Abstract: A crosslinkable copolymer is provided. The crosslinkable copolymer has pendant cationic nitrogen-containing groups with some, but not all, of these pendant groups further including a (meth)acryloyl group. The (meth)acryloyl groups can react to form a crosslinked copolymer that is ionically conductive. The crosslinked copolymer can be used to provide an anion exchange membrane that can be used in electrochemical cells such as fuel cells, electrolyzers, batteries, and electrodialysis cells.

Abstract: A free-radically polymerizable monomer is represented by the formula Each Z independently represents a divalent aliphatic hydrocarbylene group having 3 to 12 carbon atoms. Each R1 independently represents H or methyl. Each R2 independently represents a hydrocarbyl group having from 1 to 6 carbon atoms. R3 represents methyl, phenyl, or —CH2CH2CF3, and n is 3 or 4. A free-radically polymerizable composition comprises the free-radically polymerizable monomer and a free-radical polymerization initiator. A method of using the free-radically polymerizable composition, an at least partially polymerized composition, and an electronic article are also disclosed.

Abstract: Curable compositions include an acrylate of Formula I: Formula I at least one multifunctional (meth)acrylate with fused aromatic groups, heteroarylene groups, heteroalkylene groups, alkylene groups, or aralkylene groups, and a photoinitiator. The compositions, when cured, have a refractive index of 1.63 or greater at 532 nanometers, are optically transparent, and have a thermal stability such that upon heating for 1 hour at 250° C. they have a weight loss of 3.5% or less.

Abstract: A hyperbranched polymer comprising a reaction product of a hydrosilylation reaction catalyst and components a) and b), which combined contain 15 to 60 percent by weight of aromatic carbon atoms. Component a) is at least one first organosilane independently having p vinyl groups and consisting of C, H, Si, and optionally O atoms, wherein each p is independently an integer greater than or equal to 2. Component b) is at least one second organosilane independently having q Si—H groups and consisting of C, H, Si, and optionally O atoms, wherein each q is independently an integer greater than or equal to 2. p/q is at least 3.1. A curable composition comprises the hyperbranched polymer and a crosslinker system. An at least partially reaction product of the curable composition and N electronic articles including the same are also disclosed.

Abstract: Coatable compositions contain metal-(meth)acrylate hybrid materials that when cured form a metal-polymer hybrid layer with a relatively high refractive index. The curable metal-(meth)acrylate hybrid composition includes a photoinitiator, a polyoxometalate and either a hydroxyl-functional (meth)acrylate or a mixture of hydroxyl-functional (meth)acrylate and aromatic (meth)acrylate. The printable, solvent-free composition, upon curing forms a metal-polymer hybrid layer that is optically transparent and has a refractive index of at least 1.52.

Abstract: Cationic polymers are provided that comprise monomeric units of Formula (V). (V) Each asterisk (*) indicates an attachment position to another monomeric unit; R is hydrogen or methyl; each R2 is each independently an alkyl, aryl, or a combination thereof; L is a linking group comprising an alkylene group; and +R3 is a cationic nitrogen-containing group free of any N—H bonds. Membranes formed from said cationic polymers, devices including such membranes, and methods of making such cationic polymers are also provided.

Abstract: A B-stage thermoset adhesive composition comprises components a) and b) in respective amounts of 10 to 40 percent by weight to 60 to 90 percent by weight. Component a) comprises at least one thermoplastic elastomer comprising a styrenic block copolymer. Component b) comprises a polymerized reaction product of at least one capable of undergoing ring-opening metathesis polymerization and at least one ring-opening olefin metathesis catalyst. A composite article including the B-stage thermoset adhesive and methods of making the composite article are also disclosed.

Abstract: Layers of siloxane tackifying resins that do not contain siloxane fluids, gums or polymers act as adhesion promotion agents. Articles include a substrate layer, a non-tacky siloxane tackifying resin adhesion promotion layer disposed on the surface of the substrate layer, and a crosslinked siloxane layer in contact with the adhesion promotion layer. The crosslinked siloxane layer is not an adhesive layer. The adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion without the non-tacky siloxane tackifying adhesion promotion layer.

Abstract: Cationic polymers are provided that comprise monomeric units of Formula (V). (V) Each asterisk (*) indicates an attachment position to another monomeric unit; R is hydrogen or methyl; each R2 is each independently an alkyl, aryl, or a combination thereof; L is a linking group comprising an alkylene group; and +R3 is a cationic nitrogen-containing group free of any N—H bonds. Membranes formed from said cationic polymers, devices including such membranes, and methods of making such cationic polymers are also provided.