Abstract: Curable epoxy/thiol resin compositions, methods of curing, methods of bonding substrates, and tapes including the cured polymeric material, wherein the curable epoxy/thiol resin composition includes: an epoxy resin component comprising an epoxy resin having at least two epoxide groups per molecule; a thiol component comprising a polythiol compound having at least two primary thiol groups; a silane-functionalized adhesion promoter; a nitrogen-containing catalyst for curing the epoxy resin; and optionally a cure inhibitor.

Abstract: Polymerizable dental compositions comprising a redox initiator system is disclosed. The redox initiator system comprises a photolabile transition metal complex that photolyzes and initiates the redox cycle.

Abstract: A stretchable conductor includes a substrate with a first major surface and an elongate wire, wherein the substrate is an elastomeric material, the elongate wire is on the first major surface of the substrate, the wire includes a first end and a second end, and further includes at least one arcuate region between the first end and the second end. At least one portion of the arcuate region of the wire in the region has a first surface area portion embedded in the surface of the substrate and a second surface area portion unembedded on the substrate and exposed in an amount sufficient to render at least an area of the substrate in the region electrically conductive. The unembedded second surface portion of the arcuate region may lie above or below a plane of the substrate. Additionally, different methods of preparing said stretchable conductor are disclosed. Composite articles including said stretchable conductor in durable electrical contact with a conductive fabric are also disclosed.

Abstract: A catalyst-containing particle including a core and an acidic coating layer thereon, wherein the core includes a nitrogen-containing catalyst for a thermoset polymeric system, and the acidic coating layer comprises a binder; and a method of making such particles. A curable, one-part epoxy/thiol resin composition that includes: an epoxy/thiol resin mixture including: an epoxy resin component that includes an epoxy resin having at least two epoxide groups per molecule; a thiol component that includes a polythiol compound having at least two primary thiol groups; and catalyst-containing particles dispersed in the epoxy/thiol resin mixture; wherein each particle includes a core and an acidic coating layer thereon, wherein the core includes a nitrogen-containing catalyst for the epoxy resin; and a method of curing such curable composition.

Abstract: The disclosure relates to compositions, methods of applying such compositions, and methods for curing such compositions to a depth of cure of up to about 30 mm within about 0.5 second to about two minutes per light exposure area.

Abstract: Composite particles are provided that can be used to cure epoxy resins. More particularly, the composite particles have a porous polymeric core particle, a curing agent and/or a curing catalyst for an epoxy resin positioned within the porous polymeric core particle, and a fluoropolymer-containing coating layer around the porous polymeric core particle. Additionally, curable compositions are provided that are mixtures containing an epoxy resin and the composite particles. The epoxy resin typically does not react until the curable composition is heated causing the release of the curing agent and/or curing catalyst from the composite particle. Further, cured compositions formed from the curable composition are provided.

Abstract: Composite particles are provided that can be used to cure epoxy resins. More particularly, the composite particles have a porous polymeric core particle, a curing agent and/or a curing catalyst for an epoxy resin positioned within the porous polymeric core particle, and a fluoropolymer-containing coating layer around the porous polymeric core particle. Additionally, curable compositions are provided that are mixtures containing an epoxy resin and the composite particles. The epoxy resin typically does not react until the curable composition is heated causing the release of the curing agent and/or curing catalyst from the composite particle. Further, cured compositions formed from the curable composition are provided.

Abstract: A two-part adhesive composition includes: a Part A including a complex of an organoborane and an amine complexing agent, and reactive diluent selected from the group consisting of at least one vinyl ether, at least one vinylpolysiloxane, or combinations thereof; and a Part B. Part B includes a decomplexing agent that decomplexes the organoborane and the amine complexing agent, and at least one silicon-free free-radically polymerizable ethylenically-unsaturated compound selected from the group consisting of (meth)acrylates, (meth)acrylamides, and combinations thereof. The two-part adhesive composition is essentially free of organic polythiol compounds. A method of making an adhesive composition by mixing Part A with Part B is also disclosed.

Abstract: A continuous method of manufacturing adhesives is provided. The method includes obtaining an actinic radiation-polymerizable adhesive precursor composition disposed on a major surface of an actinic radiation-transparent substrate and irradiating a first portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a first irradiation dosage. The method further includes moving the actinic radiation-transparent substrate and irradiating a second portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a second irradiation dosage. Optionally, the method also includes irradiating a third portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate prior to moving the substrate.

Abstract: Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiator system comprises a photolabile transition metal complex that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.

Abstract: Polymerizable dental compositions comprising a redox initiator system is disclosed. The redox initiator system comprises a photolabile transition metal complex that photolyzes and initiates the redox cycle.

Abstract: Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiators comprises a photolabile reducing agent, that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.

Abstract: A method of making an adhesive is provided, including obtaining an actinic radiation-polymerizable adhesive precursor composition disposed against a surface of an actinic radiation-transparent substrate and irradiating a first portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a first irradiation dosage. The method further includes irradiating a second portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a second irradiation dosage. The first portion and the second portion are adjacent to or overlapping with each other and the first irradiation dosage and the second irradiation dosage are not the same. The method forms an integral adhesive having a variable thickness in an axis normal to the surface of the actinic radiation-transparent substrate.

Abstract: There is provided a one part, actinic radiation-activated, and room temperature curable epoxy-based adhesive. There is also provided an adhesive initiator system based on an iodonium salt combined with an thioxanthone photosensitizer such as isopropyl thioxanthone. There are also provided methods of use and articles made using such one part, actinic radiation-activated, and room temperature curable epoxy-based adhesive comprising an adhesive initiator system comprising an iodonium salt combined with a thioxanthone photo sensitizer.

Abstract: A polymerizable composition includes an organoborane-base complex that is a complex of an organoborane and a base, a decomplexing agent that at least partially liberates the organoborane from the organoborane-base complex, a polymerizable thiol-containing component comprising at least one polymerizable thiol-containing compound having a plurality of thiol groups in which the sulfur atom of the thiol group is covalently bonded to carbon, a hydroperoxide, and a polymerizable ethylenically-unsaturated component comprising at least one polymerizable ethylenically-unsaturated compound having a plurality of ethylenically-unsaturated groups. The combined amounts of the thiol-containing and ethylenically-unsaturated compounds total at least 50 percent by weight of all polymerizable material in the polymerizable composition. The composition may be provide as a two-part composition. Polymerized reaction product of the composition and methods of making the composition are also disclosed.

Abstract: Epoxy compounds that are bisanhydrohexitol derivatives (i.e., isosorbide derivatives, isomannide derivatives, isoidide derivatives, or mixtures thereof) having two terminal oxirane groups are provided. Additionally, curable compositions that include these epoxy compounds, cured compositions prepared from the curable compositions, and articles containing the cured compositions are described. The cured compositions can be used, for example, as a structural adhesive or as a coating.

Abstract: A two-part adhesive composition includes: a Part A including a complex of an organoborane and an amine complexing agent, and reactive diluent selected from the group consisting of at least one vinyl ether, at least one vinylpolysiloxane, or combinations thereof; and a Part B. Part B includes a decomplexing agent that decomplexes the organoborane and the amine complexing agent, and at least one silicon-free free-radically polymerizable ethylenically-unsaturated compound selected from the group consisting of (meth)acrylates, (meth)acrylamides, and combinations thereof. The two-part adhesive composition is essentially free of organic polythiol compounds. A method of making an adhesive composition by mixing Part A with Part B is also disclosed.

Abstract: A method of making an adhesive is provided, including obtaining an actinic radiation-polymerizable adhesive precursor composition disposed against a surface of an actinic radiation-transparent substrate and irradiating a first portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a first irradiation dosage. The method further includes irradiating a second portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a second irradiation dosage. The first portion and the second portion are adjacent to or overlapping with each other and the first irradiation dosage and the second irradiation dosage are not the same. The method forms an integral adhesive having a variable thickness in an axis normal to the surface of the actinic radiation-transparent substrate.

Abstract: A curable adhesive composition includes a curable epoxy resin, an amine curing agent, a toughening agent, and aluminum flakes. The aluminum flakes include a fatty acid milling aid on at least a portion of their surfaces. The aluminum flakes were heated after milling. An article includes an adhesive composition cured between at least two members. The cured adhesive composition includes the heat-treated aluminum flakes within a toughened epoxy resin cured with an amine curing agent. The method includes applying the curable adhesive composition of described above to a surface of at least one of two or more members, joining the members so that the curable adhesive composition is sandwiched between the two or more members, and curing the curable adhesive composition to form an adhesive bond between the two or more members.

Abstract: Adhesive compositions are provided comprising: a) a base resin comprising an epoxy resin; b) a first epoxy curative; and c) a second epoxy curative; wherein the first and second epoxy curatives are chosen such that the second epoxy curative may remain substantially unreacted in the composition under conditions of temperature and duration that render the first epoxy curative substantially reacted with epoxy resin in the composition. In some embodiments, the first epoxy curative is substantially reacted with epoxy resin in the composition and the second epoxy curative is substantially unreacted in the composition. In some embodiments, the adhesive composition is used in the form of an adhesive film.