Waterproof urethane-based adhesive compositions are described herein. Silane is reacted with prepolymer urethane to at least partially end-cap the urethane. A reinforcing extender, a thixotropic agent, a magnetic agent, a first catalyst, and methylethylketoximino (MEKO) silane are also added to the composition to form the deactivated adhesive composition. Prior to coating a substrate with the adhesive, a second catalyst is added. The second catalyst speeds up the curing time and improves the shelf life of the moisture cure adhesive. The adhesive is cured to a final product that is waterproof, hydrolytically stable, and pH resistant.

Waterproof urethane-based adhesive compositions are described herein. Silane is reacted with prepolymer urethane to at least partially end-cap the urethane. A reinforcing extender, a thixotropic agent, a magnetic agent, a first catalyst, and methylethylketoximino (MEKO) silane are also added to the composition to form the deactivated adhesive composition. Prior to coating a substrate with the adhesive, a second catalyst is added. The second catalyst speeds up the curing time and improves the shelf life of the moisture cure adhesive. The adhesive is cured to a final product that is waterproof, hydrolytically stable, and pH resistant.

A polyisocyanate composition includes a polyisocyanate having an isocyanurate group, derived from one or more types of diisocyanates selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate, UV absorption peaks of a trimeric equivalent of the diisocyanate and a tetrameric equivalent of the diisocyanate being present in a spectrum of the polyisocyanate composition measured by gel permeation chromatography, the ratio ((B)/(A)) of the height (B) of the UV absorption peak of the tetrameric equivalent of the diisocyanate to the height (A) of the UV absorption peak of the trimeric equivalent of the diisocyanate being 0.01 to 3, and the content of a volatile component produced from storage for three months at 60 C. being 0.3% by mass or less with respect to the total mass of the polyisocyanate composition prior to storage, the volatile component having been removed from the polyisocyanate composition in advance.

A coating composition can be made by providing an aminoalkoxysilane and, in the substantial absence of water, reacting at least a portion of the aminoalkoxysilane with at least one epoxide-containing compound including an aliphatic group to yield at least one alkoxysilylamine, and then reacting the alkoxysilylamine with at least one isocyanate reagent containing at least two isocyanate groups to yield a monomer having plural alkoxysilane groups and, in many embodiments, at least two branched aliphatic groups having at least six carbon atoms. A coating composition thus formed exhibits high durability and good flexibility. Also disclosed is a method of applying a coating composition to a substrate and allowing the coating composition to cure, and the cured coating resulting from such application.

Electro-optic assemblies and related materials (e.g., adhesive) for use therein are generally provided. The electro-optic assembly comprises a hybrid adhesive layer comprising two or more adhesive materials including a polyurethane adhesive material and a polyacrylate adhesive material. The polyurethane adhesive material includes an end-capping cyclic carbonate. In some embodiments, the adhesive layer is formed by curing the two adhesive materials under two different sets of conditions, comprising two or more curing steps.

Electro-optic assemblies and related materials (e.g., adhesive) for use therein are generally provided. The electro-optic assembly comprises a hybrid adhesive layer comprising two or more adhesive materials including a polyurethane adhesive material and a polyacrylate adhesive material. The polyurethane adhesive material includes an end-capping cyclic carbonate. In some embodiments, the adhesive layer is formed by curing the two adhesive materials under two different sets of conditions, comprising two or more curing steps.

A method to accelerate cure of a multicomponent coating composition is described herein, including the steps of providing an isocyanate and an isocyanate-reactive compound, and replacing a portion of the isocyanate-reactive compound with a compound of formula I: ##STR00001##

The invention relates to an adhesive dual-component composition comprising a composition A based on a polyurethane prepolymer with cyclocarbonate terminations and a composition B based on a mixture comprising at least one diamine B1 comprising only two primary amine groups of the CH.sub.2NH.sub.2 type and at least one polyamine B2 comprising at least three primary amine groups of the CH.sub.2NH.sub.2 type. The invention also relates to a multilayer structure produced from the adhesive composition according to the invention and to the method for the production thereof.

The invention relates to an adhesive dual-component composition comprising a composition A based on a polyurethane prepolymer with cyclocarbonate terminations and a composition B based on a mixture comprising at least one diamine B1 comprising only two primary amine groups of the CH.sub.2NH.sub.2 type and at least one polyamine B2 comprising at least three primary amine groups of the CH.sub.2NH.sub.2 type. The invention also relates to a multilayer structure produced from the adhesive composition according to the invention and to the method for the production thereof.

Electro-optic assemblies and related materials (e.g., adhesive) tier use therein are generally provided. The adhesive layer may comprise an end-capped polyurethane. Some adhesive layers comprise two or more reactive functional groups (e.g., reactive functional groups configured to react with one or more curing species such that, for example, at least one of the two or more functional groups forms a crosslink). The adhesive may also comprise a chain-extending reagent that includes one or more reactive functional groups. In some embodiments, the adhesive is cured by reacting one or more reactive functional groups with one or more curing species. Curing the adhesive may comprise two or more curing steps. In some embodiments the adhesive layer may comprise one or more cross-linkers.