Abstract:
Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings.
Abstract:
A circuit terminal connected structure and a circuit terminal connecting method are provided. Both the structure and the method feature a circuit connecting material formulated with the following components: a curing agent capable of generating free radicals upon heating; an acrylate or methacrylate radical polymerizable substance; and either an acrylic rubber or a maleimide radical polymerizable substance having at least two maleimide groups per molecule. In some embodiments, the curing agent features a 10-hour half life temperature of 40° C. or above and a 1-minute half-life temperature of 180° C. or below. In other embodiments, the circuit connecting material includes conductive particles. In additional embodiments, the circuit connecting material includes a hydroxyl-group-containing resin having a weight average molecular weight of 10,000 or more.
Abstract:
A composition, which is particularly useful as an adhesive, as well as a method of making an adhesive composition, and a method of using an adhesive composition are disclosed.
Abstract:
A pregellable adhesive containing several polymers, of which at least one is olefinically unsaturated and the other capable of curing by esterification, prepared in such a way that it cures by two different chemical reaction mechanisms which can be activated successively and catalyzed at least substantially independently of one another.
Abstract:
The present invention provides a composition having two separate, reactive components that when mixed together form a reactive mixture that undergoes curing or hardening, said two-component sealant and/or adhesive composition comprising: i) in a first component, at least one compound (VCC) having two or more exo-vinylene cyclic carbonate units, wherein said exo-vinylene cyclic carbonate units are bonded to one another by means of at least one organic, siloxane-free linking group, wherein said linking group is not directly bonded to the exo-vinylene double bonds and linking groups formed by polymerization of (meth)acrylic monomers are excluded; and, ii) in a second component, at least one multifunctional hardener that has at least two functional groups (F) selected from the group consisting of primary amino groups, secondary amino groups, hydroxy groups, phosphine groups, phosphonate groups, and mercaptan groups, wherein the compound (VCC) of said first component is characterized in that it has at least one acetal group in the linking group in the case that the compound has exactly two exo-vinylene cyclic carbonate units,
Abstract:
The present invention relates to a self-adhesive article comprising a support layer of foam or similar type and an adhesive layer obtained by cross-linking an adhesive composition. The present invention also relates to a mixture of at least two polymers suitable for use for the manufacture of the self-adhesive article as well as an adhesive composition comprising said mixture of at least two polymers according to the invention.
Abstract:
A laminating adhesive is prepared from a water-borne resin obtained by allowing an isocyanate group-terminated prepolymer having an anionic group to react with a chain extender; a swellable inorganic layer compound; and a water dispersible polyisocyanate curing agent.
Abstract:
Biomimetic adhesive compositions can be used in various aspects of subterranean treatment operations. Methods for treating a subterranean formation can comprise: providing an adhesive composition that comprises a first polymer comprising a plurality of monomers that comprise a phenolic moiety, a biopolymer that is crosslinkable with the first polymer, a crosslinking agent, and an oxidizing agent; introducing the adhesive composition into a subterranean formation; and forming a coacervate-bound surface in the subterranean formation by crosslinking the first polymer.
Abstract:
What is disclosed is a water-based adhesive composition that is an aqueous dispersion or emulsion of a polymer component having functional groups that are inactive in a reversible manner in the adhesive composition as prepared; and a water-soluble, or water emulsion, or dispersion of a cross linker component having functional groups wherein the functional groups are inactive in a reversible manner in the adhesive composition as prepared. Preferably the adhesive composition has a pH of from 7 to 11 and a volatile stabilizing base component is used to inactivate the functional groups and to provide the pH. The functional groups in the polymer component and the cross linker component are activated when the volatile base is removed during lamination heat treatment. The adhesive composition can be used to adhere a variety of plastic films to metal substrates without reliance on non-water-based adhesives.