The invention provides a varnish produced through reaction between a compound having an amino group and a resin having a functional group capable of reacting with an amino group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the amino group of the compound in a solvent, and also a varnish produced through reaction between a compound having a phenolic hydroxyl group and a resin having a functional group capable of reacting with a phenolic hydroxyl group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the phenolic hydroxyl group of the compound in the solvent. The invention also provides a prepreg, a resin-coated film, a metal-foil-clad laminate, and a printed wiring board produced by use of any of the varnishes.

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).

Kits, recyclable covalently crosslinked polymer networks and composites, and related methods of making and recycling are described.

An advanced epoxy resin including a reaction product of (A) at least one epoxy resin; (B) at least one cashew nutshell liquid; and (C) at least one multifunctional carboxylic acid; a curable epoxy resin composition prepared using the above advanced epoxy resin; and the use of the above curable epoxy resin composition to prepare a coating.

The present disclosure provides a curable composition that includes an epoxy resin and a curing component comprising a blend of at least two amines. The curable composition may be combined with reinforced fibers and cured to form a composite article which can be used in various applications, such as in wind turbine blades.

A radiation-sensitive resin composition comprising a cyclic olefin polymer (A) having a protonic polar group, a bifunctional epoxy compound (B) represented by the following general formula (1), and a radiation-sensitive compound (C):

##STR00001## wherein, in the above general formula (1), R.sup.1 is a linear chain or branched alkylene group having 1 to 15 carbon atoms, and k is an integer of 1 to 20, is provided.

The invention provides a varnish produced through reaction between a compound having an amino group and a resin having a functional group capable of reacting with an amino group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the amino group of the compound in a solvent, and also a varnish produced through reaction between a compound having a phenolic hydroxyl group and a resin having a functional group capable of reacting with a phenolic hydroxyl group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the phenolic hydroxyl group of the compound in the solvent. The invention also provides a prepreg, a resin-coated film, a metal-foil-clad laminate, and a printed wiring board produced by use of any of the varnishes.

Provided is a thermally curable coating composition for alloy substrates, comprising: curable components, comprising an epoxy resin and a multifunctional (meth)acrylate; latent curing agents, which crosslink with the curable components upon heating, and comprise an isocyanate having at least two NCO groups and an amino resin; a curing promoter, comprising an aromatic phosphate comprising at least one hydroxy group connected with the phosphorous atom; and an organic solvent. Also provided are a method for providing a coating layer onto an alloy substrate and a coating layer thus obtained.

A curable adhesive that is modified to allow spray application and polymerization seamlessly during the process of epoxy resin vacuum infusion.

A coating composition including an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and a melamine compound in an amount of about 5 weight percent to about 10 weight percent, where all weight percents are based on a total weight of the coating composition.