An epoxy resin composition suitable for molding a fiber-reinforced plastic molded article is provided. The molded article has exceptional mechanical properties. In particular, a tubular molded article has high breaking strength. The epoxy resin composition contains components (A), (C), and (D), where component (A) is an epoxy resin of a particular formula, component (C) is an epoxy resin other than component (A) that is liquid at 25° C., and component (D) is a curing agent.

Pre-impregnated composite material (prepreg) that can be cured/molded to form aerospace composite parts. The prepreg includes carbon reinforcing fibers and an uncured resin matrix. The resin matrix includes an epoxy component that is a combination of a hydrocarbon epoxy novolac resin and a trifunctional epoxy resin and a tetrafunctional epoxy resin. The resin matrix includes polyethersulfone as a toughening agent and a thermoplastic particle component that includes a mixture of polyamide particles and polyimide particles.

The present invention relates to a polymer composition comprising an epoxy resin and a multistage polymer. In particular the present invention it relates to polymer composition comprising an epoxy resin and a multistage polymer that can be used as a masterbatch. More particularly the present invention relates also to a process for preparing a polymer composition comprising an epoxy resin and a multistage polymer by spray drying or coagulation.

The present disclosure is directed to a composition including a polyvinyl butyral represented by the following formula:

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wherein A, B and C represent a proportion of corresponding repeat units expressed as a weight percent, wherein each repeat unit is randomly distributed along a polymer chain and wherein the sum of A, B and C is about 100 weight percent; a poly(melamine-co-formaldehyde) based polymer and an anhydride. Devices coated with the composition and cured films formed from the composition comprising conductive features are also provided.

The present invention relates to an electrically conductive film characterized by being able to undergo elastic deformation, having little residual strain rate and exhibiting stress relaxation properties. More specifically, the present invention relates to an electrically conductive film wherein the stress relaxation rate (R) and the residual strain rate (alpha), as measured in a prescribed extension-restoration test, are as follows: 20%≦R≦95% and 0%≦α≦3%.

A curable epoxy resin composition including: (a) a cycloaliphatic epoxy resin, (b) an oxazolidone ring-containing epoxy resin, (c) a reaction product of (i) an anhydride compound and (ii) a polyol, and (d) an anhydride hardener; a process for preparing the curable epoxy resin composition; and a composite including a reinforcing fiber embedded in a thermoset resin, wherein the thermoset resin is a reaction product of the curable epoxy resin composition.

Provided are: an epoxy resin composition having exceptional performance with regard to impregnating reinforcing fibers, enabling optimal control of resin flow during molding, and having exceptional in-plane shear strength; a cured epoxy resin product; and a prepreg. An epoxy resin composition comprising at least the following constituent elements [A], [B], and [C]: [A] an epoxy resin, [B] a polyether sulfone having a weight-average molecular weight of 2000-20000 g/mol, [C] a curing agent

Methods and compositions are provided for the efficient and beneficial use of nanoparticulates, such as carbon nanotubes. In various embodiments, a nanoparticulate entrapped in a linear polymer, where the linear polymer is formed in the presence of the nanoparticulate, is provided. The entrapped nanoparticulate provides an efficient means to introduce nanoparticulates into compositions, such as resins and fiber-reinforced resins, allowing for increased dispersion and beneficial properties.

A resin composition that is laser-weldable under broad conditions of laser irradiation. A formed article formed of the resin composition. A kit for Galvano-scanning laser welding with a transmissive resin composition and a light-absorptive resin composition. A car-borne camera component formed of the resin composition. A car-borne camera module with the car-borne camera component. A UV exposed article formed of the resin composition. A method for manufacturing a formed article by welding a transmissive resin member and an absorptive resin member by Galvano-scanning laser welding. The resin composition for Galvano-scanning laser welding, contains 0.1 to 20 parts by mass of a reactive compound, per 100 parts by mass of a thermoplastic resin.

Methods and systems, and components made according to the methods and systems, are disclosed relating to improved methods for fabricating resin-containing composite prepreg materials, wherein the prepreg plies are treated with a particulate material to achieve predetermined spatially variable shear and tack values at a predetermined location on at least one prepreg ply surface of at least one prepreg ply.