Abstract: A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.

Abstract: Provided is a polyurethane-modified epoxy resin composition having satisfactory operability of processing, such as casting or impregnation, in a composition state. The epoxy resin composition includes, as essential components, the following components (A) to (D): (A) a low-concentration polyurethane-modified epoxy resin containing a polyurethane having an epoxy resin added to each of both terminals thereof and/or one terminal thereof; (B) a polyurethane-unmodified epoxy resin that is liquid at 30° C.; (C) a solid epoxy resin having a bisphenol structure, the resin having a glass transition temperature or a melting point of 50° C. or more; and (D) an amine-based curing agent that is dicyandiamide or a derivative thereof, wherein the epoxy resin composition includes the component (A) at from 3.0 wt % to 30.0 wt %, and the component (C) at from 0.1 wt % to 40.0 wt % with respect to the total of the components (A) to (D).

Abstract: Coating compositions suitable for machined cementitious substrates are provided. The coating compositions provide adhesion to the machined cementitious substrate while maintaining high mechanical film strength. The coating compositions are also compatible with industrial implementation, and exhibit good pot life.

Abstract: The invention relates to a press for producing dimensionally stable preforms from material that is substantially in the form of a powder, in particular iron powder and or ceramic powder, with a tool comprising an upper die and a lower die, wherein the upper die and the lower die respectively comprise at least one die, wherein a first die and a second die are arranged together, one sliding in the other, as the upper die or lower die and respectively have a first end and a second end, lying opposite the first end, wherein at least one of the two dies spreads out along one portion to such an extent that the second end thereof has a width that at least approaches an outer diameter of a die holder associated with the second end. This allows presses of a compact form to be made available for producing dimensionally stable preforms of high quality and great complexity.

Abstract: The present invention discloses an aramid-based epoxy resin and a method of making same, including the steps of reacting aramid fiber powder as a raw material with a metallization reagent; grafting a plurality of ethylene oxide, propylene oxide or a mixture thereof to an activated amide group of the aramid to introduce a reactive functional group hydroxyl; and then conducting a ring-opening and closing reaction by using epichlorohydrin to obtain a liquid aramid-based epoxy resin.

Abstract: The present disclosure provides an epoxy resin wave-absorbing composite material and a preparation method thereof. The method includes: heating an epoxy resin to 50° C.˜70° C., and adding carbon black, to obtain a mixture of the epoxy resin and the carbon black; heating the mixture of the epoxy resin and the carbon black to 100° C.˜120° C., adding a curing agent, and stirring and dissolving them to obtain a mixture of the epoxy resin, the carbon black, and the curing agent; and adding surface-treated hollow glass microbeads into the mixture of the epoxy resin, the carbon black, and the curing agent, and curing them to obtain the epoxy resin wave-absorbing composite material.

Abstract: A resin composition and method for installing a pipe liner that allows the liner to be fully wet out with a resin and activator and stored for a period of up to six months prior to installation and curing. A method of lining a pipe with a delayed curing resin composition is also provided that includes fully wetting out a liner with a blended two part epoxy composition such that the liner can be transported in a wet out fashion, placed in a pipe to be lined and repositioned as needed without concern for the resin composition to begin curing.

Abstract: To show a curable resin composition suitable as an adhesive for bonding a structural material having good adhesiveness to aluminum in particular. A curable resin composition containing (A1) phosphoric acid-modified epoxy resin obtained by reacting a phosphoric acid (a1) and an epoxy compound (a2) (excluding a urethane-modified epoxy resin and a urethane-modified chelate epoxy resin); and (A2) an epoxy resin (excluding component (A1)); (B) a block urethane; and (C) a latent curing agent, in which a phosphorus content in a total mass of component (A1) and component (A2) is 0.01 to 2.0% by mass.

Abstract: A resin composition and an article made from the resin composition are provided. The resin composition comprises: 30 parts by weight of thermosetting resin; 50 to 125 parts by weight of maleimide resin; and 5 to 35 parts by weight of monofunctional long-chain alkyl acrylate monomer. The resin composition is capable of achieving a proper viscosity and a good filling property whiling maintaining a high glass transition temperature.

Abstract: 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.

Abstract: The present invention relates to a method for preparing a benzoxazine-containing resin composition and a prepreg and a laminate made therefrom. The method for preparing a benzoxazine-containing resin composition is adding an acidic filler to a benzoxazine-containing resin composition. By adding an acidic filler to the benzoxazine-containing resin composition, the present invention promotes greatly the polymerization reaction of benzoxazine and epoxy resin, reduces the curing temperature required for polymerization of benzoxazine and epoxy resin. The laminate prepared from the benzoxazine-containing resin composition, to which an acidic filler is added, has high anti-stripping stability, high glass transition temperature, low water absorption, high heat resistance, high bending strength and good processability, and can achieve low coefficient of thermal expansion.

Abstract: The thermosetting resin composition for LDS of the invention includes a thermosetting resin, an inorganic filler, a non-conductive metal compound that forms a metal nucleus upon irradiation with active energy rays, and a coupling agent, in which the non-conductive metal compound includes one or more selected from the group consisting of a spinel-type metal oxide, a metal oxide having two or more transition metal elements in groups adjacent to each other, the groups being selected from groups 3 to 12 of the periodic table, and a tin-containing oxide, and the coupling agent includes one or more selected from the group consisting of mercaptosilane, aminosilane, and epoxysilane.

Abstract: A curable green epoxy resin composition is described. More particularly, the curable green epoxy resin composition includes a biobinder isolated from bio-oil produced from animal waste, such as from swine manure. The biobinder can act as a curing agent for an epoxy resin component in the resin composition. Cured green epoxy resins, prepregs containing the curable green epoxy resin, and related composite materials are described. In addition, methods of preparing the curable green epoxy resin composition and of curing the curable green epoxy resin.

Abstract: A fiber sizing agent includes: a vinyl ester resin (A) having an alkoxy polyoxyalkylene structure and a urethane bond; and an aqueous medium. The fiber sizing agent has excellent fiber sizing properties for various fibers such as glass fibers and carbon fibers. A molded article obtained from a molding material including the fiber sizing agent is excellent in various physical properties such as bending strength, compressive strength, and interlaminar shear strength, and thus can be used, for example, for an automobile member, an aircraft member, a windmill member, and an industrial member.

Abstract: A resin composition including an inorganic filler (B) having an aluminosilicate (A) having a silicon atom content of from 9 to 23% by mass, an aluminum atom content of from 21 to 43% by mass, and an average particle diameter (D50) of from 0.5 to 10 ?m; and any one or more thermosetting compounds selected from the group consisting of an epoxy resin (C), a cyanate compound (D), a maleimide compound (E), a phenolic resin (F), an acrylic resin (G), a polyamide resin (H), a polyamideimide resin (I), and a thermosetting polyimide resin (J), wherein a content of the inorganic filler (B) is from 250 to 800 parts by mass based on 100 parts by mass of resin solid content.

Abstract: Disclosed is a curable composition with enhanced curing time at ambient temperatures, the curable composition including (a) a resin, e.g., 4,4?-isopropylidenediphenol-epichlorohydrin copolymer and (b) one or more curing agents, wherein a ratio of a weight percentage of the resin to a weight percentage of the curing agent or curing agents is from about 12:1 to about 15:1. Also disclosed is a method of curing a cured-in-place liner, wherein the cured-in-place liner contains the above curable composition.

Abstract: Threaded parts such as bolts are rust-proofed by using a treatment liquid including a binder resin containing silica and at least one of a modified epoxy resin obtained by graft polymerization using a carboxylic acid-containing acrylic polymer as a side chain and a modified acrylic resin obtained by graft polymerization using a carboxylic acid-containing acrylic polymer as a side chain. By using this treatment liquid, coating treatment can be carried out at one time without need to use an organic solvent. There is an advantage that the friction coefficient does not increase even when tightening is repeated.

Abstract: A thermosetting resin composition, wherein a cured product of the thermosetting resin composition that has been cured at 130° C. for 15 minutes has a moisture absorptivity of 2.5% or less after 168 hours at 85° C. and 85% RH, and a ratio of the light transmittance with a wavelength of 700 nm/the light transmittance with a wavelength of 400 nm of 2 or less.

Abstract: The present invention discloses a composition comprising at least one or more stereoisomers of a compound represented by the following Formula (1), wherein, in a gas chromatogram obtained by analyzing the composition by gas chromatography, the ratio of the area of the maximum peak with respect to the total area of peaks derived from the stereoisomers is 90% or more. The present invention also discloses: a curable composition comprising the above described composition, and one selected from the group consisting of a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator; as well as a cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), R1 to R18 are each independently selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group.).

Abstract: Degradable hyperbranched epoxy resin and a preparation method thereof, wherein the preparation method comprises carrying out a reaction between a cyclotriazine compound and a carboxyl-sourced compound to prepare a carboxyl-terminated or hydroxy-terminated hyperbranched polymer; then reacting with epoxy chloropropane to obtain a degradable hyperbranched epoxy resin of which the molecular weight is about 1,900-22,000 g/mol. After the degradable hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 2 h in a phosphoric acid solution at the temperature of 80° C., thus realizing the recycle of the epoxy resin. The invention has simple process, and the product is degradable and has self-strengthening and self-toughening functions, and is expected to be used in the fields of strengthening and toughening of epoxy resins, solvent-free coatings etc.