Disclosed is epoxy adhesive composition that combine the benefits of both 1K and 2K technologies in one system which demonstrates a good balance of fast fixation, curing speed, desirable mechanical performance, durability, and good oil adsorption once cured. Said epoxy adhesive composition comprising an epoxy resin, a reactive urethane group- and/or urea group-containing polymer having capped isocyanate, an epoxy curing catalyst, a dicyandiamide, and a hardener.

An electromagnetic steel sheet coated with an insulating film with excellent hardness and suitable for use as a material for iron cores of large-sized electric-power generators; and a process for producing the electromagnetic steel sheet coated with an insulating film. The purpose is achieved with a coating material for forming insulating films, the coating material including a solvent and components (A) to (C) contained therein in the respective amounts on a solid basis. (A) A water-compatible carboxylated resin; 100 parts by mass. (B) An aluminum-containing oxide; more than 40 parts by mass but less than 300 parts by mass per 100 parts by mass of the component (A). (C) At least one crosslinking agent selected from the group containing of melamine, isocyanates, and oxazoline; 100 parts by mass or more but less than 300 parts by mass per 100 parts by mass of the component (A).

A multi-component composition for additive manufacturing, and related methods, are generally described.

Disclosed is a curable resin composition that has excellent curability by irradiation of light and heating and that is suitable for such applications as liquid encapsulants, liquid adhesives, adhesives for camera modules, and liquid crystal sealants. The curable resin composition contains (A) an aromatic epoxy resin having an allyl group, (B) a thiol-based curing agent, (C) a photoradical initiator, and (D) a thermally latent curing agent. Preferably, (A) the compound having an allyl group and an epoxy group is an aromatic epoxy resin having an allyl group. Preferably, the thiol-based curing agent, which is component (B), is in liquid form at 25° C.

A thermosetting coating composition includes a hydroxyl group-containing resin, a curing agent, a phosphazene compound, and a solvent. The curing agent is a polyisocyanate curing agent and/or a blocked polyisocyanate curing agent.

One aspect of the present invention relates to a resin composition containing a polyrotaxane (A), an epoxy resin (B), and a curing agent (C), in which the curing agent (C) contains an acid anhydride (C-1) in an amount of 0.1 parts by mass or more and less than 10 parts by mass based on a total of 100 parts by mass of the polyrotaxane (A), the epoxy resin (B), and the curing agent (C).

This invention provides a cationic electrodeposition paint composition comprising an amino-group-containing epoxy resin (A), a blocked polyisocyanate compound (B), and a modified imidazole (C) having a specific structure, wherein the cationic electrodeposition paint composition satisfies the following (i) or (ii), or both: (i) the cationic electrodeposition paint composition further comprises a rust inhibitor (D) or (ii) a blocking agent (b-2) of the blocked polyisocyanate compound (B) is an oxime-based compound (b-2-1) and/or a pyrazole-based compound (b-2-2).

A method of making an isocyanurate polymer is disclosed. An isocyanate including at least one of an aromatic isocyanate and an aliphatic isocyanate is provided. A trimerization catalyst including at least one of an amine catalyst, an organometallic compound, and an imidazole compound is provided. A reaction mixture that is substantially free of reactive hydrogen is formed by mixing less than about twenty percent by total weight of said reaction mixture of an epoxide with said isocyanate. The trimerization catalyst is mixed with the reaction mixture. The reaction mixture is cured to produce a polymer composition including a reaction product of two or more isocyanates.

A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the process is in the absence of a solvent (G) with a boiling point higher than 200° C., preferably higher than 190° C. and more preferably higher than 180° C. at 1 bar (absolute). The invention is also related to the resulting thermoplastic polyoxazolidinone.

The present invention provides compositions, methods and kits for the temporal control induction time for a polymerization reaction.