A circuit board includes an insulating made by a low dielectric resin composition includes a low dielectric resin containing acid anhydride, an epoxy resin, polyphenylene ether resin with vinyl and active esters, maleic acid liquid polybutadiene, and an accelerator. Such low dielectric resin can be dissolved in organic solvent more easily than a low dielectric resin without acid anhydride, and the low dielectric resin containing acid anhydride has a better compatibility with other organic components than a low dielectric resin without acid anhydride. A low dielectric resin composition with lower dielectric constant and better properties can thus be obtained.

Disclosed are a polymer resin composition comprising: a binder resin including an olefin-based polymer resin; a carbon fiber surface-treated with a predetermined compound; and a modified polyolefin resin grafted with polyetheramine-bonded dicarboxylic acid or an acid anhydride thereof, a polymer composite tape including the polymer resin composition, and a front bumper of a vehicle equipped with the polymer composite tape.

A graft copolymer capable of providing impact resistance, flame retardance, and color rendering properties to a thermoplastic resin is described. The graft copolymer contains a polyorganosiloxane, and is obtained by graft-polymerizing vinyl monomers including a (meth)acrylate ester (b.sub.1) having an alkyl group or an aromatic group and an aromatic vinyl monomer (b.sub.2) on a polyorganosiloxane-based rubber. The graft copolymer has a volume average particle diameter of 200-2000 nm, and contains 0.1-69 mass % of polyorganosiloxane. A thermoplastic resin composition is also described, containing a thermoplastic resin (A), the graft copolymer, a fluorine resin (C) and a flame retardant (D). A molded article is also described, which is obtained by molding the thermoplastic resin composition.

A reinforced thermoplastic resin composition comprising specific amounts of: a main resin component (C) comprising 50 to 100% by weight of a polycarbonate resin (A) and 0 to 50% by weight of a graft copolymer (B) obtained by polymerizing an aromatic alkenyl compound monomer (a) and a vinyl cyanide compound monomer (b) in the presence of a rubber polymer (B1); a grass fiber (D); a glycidyl ether unit-containing polymer (E) containing glycidyl ether units and having a weight average molecular weight of 3,800 to 60,000; a phosphoric acid ester-based flame retardant (F); and an organomodified siloxane (G).

The present invention relates to a modified polyaspartic acid ester containing a polyaspartic acid ester (A) and polymer fine particles (B), wherein the polymer fine particles have a volume average particle diameter of 0.01 to 0.6 μm and an amount of the polymer fine particles is 0.5 to 70% by weight, and a curable resin composition containing a polyaspartic acid ester (A), polymer fine particles (B) having a volume average particle diameter of 0.01 to 0.6 μm, and a polyisocyanate (C).

The present invention relates to a modified polyaspartic acid ester containing a polyaspartic acid ester (A) and polymer fine particles (B), wherein the polymer fine particles have a volume average particle diameter of 0.01 to 0.6 μm and an amount of the polymer fine particles is 0.5 to 70% by weight, and a curable resin composition containing a polyaspartic acid ester (A), polymer fine particles (B) having a volume average particle diameter of 0.01 to 0.6 μm, and a polyisocyanate (C).

The present invention relates to a thermoplastic resin composition including a (meth)acrylate graft copolymer and a method of preparing the thermoplastic resin composition. According to the present invention, the thermoplastic resin composition includes a graft copolymer (A) containing an alkyl acrylate rubber core and an alkyl methacrylate compound (co)polymer shell surrounding the alkyl acrylate rubber core; and a matrix resin (B). In this case, the rubber core has an average particle diameter of 40 to 100 nm, the graft copolymer (A) has a grafting degree of 20 to 100%, and the thermoplastic resin composition has a refractive index of greater than 1.46 and less than 1.49 and a blackness (L value) of less than 25.0.

Disclosed is a nylon-based resin composite that has a sufficiently low moisture absorption rate to substantially prevent the occurrence of deformation and can attain both low warpage and improved impact resistance. The nylon-based resin composite comprises about 100 parts by weight of a base resin and about 1 to about 30 parts by weight of an impact modifier wherein the base resin comprises about 20 to about 80% by weight of a modified nylon-based thermoplastic resin containing benzene rings in the main chain and about 20 to about 80% by weight of a flat reinforcing fiber having a cross-sectional aspect ratio of about 1.5 or more.

The invention relates to an impact-modified moulding composition, especially impact-modified PMMA, having an improved profile of properties, especially also at elevated temperatures, to moulded articles obtainable therefrom and to the use of the moulding composition and the moulded article.

Coupling agents useful for preparing vulcanized composition with filers such as silica and carbon black are provided. The coupling agents include fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group. The coupling agents may be grafted onto polydiene polymers or added into a vulcanizable composition as an oligomer. The use of one or both of fluorine substituted styrene compounds and styrene compounds containing a hydrocarbyloxysilane functional group may improve the strength, rolling resistance, and/or cure rate of a vulcanized polymer compared to a vulcanized polymer without a coupling agent.