The invention relates to thermoplastic compositions, containing the following components: a) 30 to 90 wt % of one or more styrene copolymers, and acrylonitrile, as component A; b) 10 to 70 wt % of several impact-modifying graft rubbers without an olefinic double bond in the rubber phase as component B, wherein said component B contains: B1) 1 to 50 wt % of rubber particles that have an average particle diameter of 50 to 150 nm as component B I; B2) 50 to 99 wt % of rubber particles that have an average particle diameter of 800 to 1200 nm as component B2; c) 0 to 20 wt % of one or more additives as component C; are especially weather-resistant and have good mechanical properties.

A resin composition is comprised of an epoxy resin comprised of a solid epoxy resin and a liquid polyurethane toughener that is dissolved in the epoxy resin and, upon curing of the liquid epoxy resin, the liquid polyurethane toughener phase separates into particles having a particle size of 50 nm to 2 micrometers, an epoxy hardener; and an epoxy soluble latent catalyst. The resin composition provides a more homogeneous infusion of the resin into a fibrous material for forming a prepreg and ultimately an epoxy fiber reinforced composition with improved toughness without sacrificing speed of impregnation or uniformity of the epoxy matrix within the composite.

Described herein is a method for producing photochromic contact lenses, in particular, photochromic silicone hydrogel contact lenses. The method comprises a step of cast molding of a lens-forming composition including an iniferter to form an unprocessed contact lens having iniferter moieties covalently incorporated into its polymer matrix and a step of iniferter-induced graft-polymerization of a photochromic vinylic monomer to the polymer matrix only in its central region which is circular and concentric with the central axis of the unprocessed contact lens. The obtained photochromic contact lens has a central pupillary region that only can undergo a reversible color change upon exposure to UV/HEVL-radiation.

A transparent static-dissipative polycarbonate (PC) resin composition includes the following components: 70-95 parts by weight of PC resin, 5-30 parts by weight of antistatic agent masterbatch and 0.5-1.5 parts by weight of a transesterification inhibitor. The antistatic agent masterbatch includes the following components by mass percentage: 40-60% of an antistatic agent, 0.5-1.6% of a transesterification accelerator, 1-3% of an assistant cross-linkinger, and the balance of PC resin. A method for preparing the transparent static-dissipative PC resin composition includes the following steps: (I) preparing the components of the transparent static-dissipative PC resin composition according to the formulation, and mixing the components evenly to obtain a premix; and (II) adding the premix into a twin-screw extruder, melting, extruding, cooling and pelletizing, to obtain a target product.

A thermosetting resin composition contains a thermosetting resin and an inorganic filler. The thermosetting resin includes a curing agent. A 3 mass % methyl ethyl ketone solution of the curing agent has a Gardner color scale of 15 or more. The content of the curing agent accounts for 10 mass % or more of a total solid content of the thermosetting resin composition.

The present invention relates to not only the provision of a composition containing a wide variety of particles with good dispersibility, the composition being able to make both rigidity and elongation at sufficient levels compatible with each other even under a low humidity, etc. but also the provision of a coating and a film each formed of the foregoing composition, and a base material having the foregoing coating or film. Specifically, the present invention provides a composition containing an ethylene-vinyl alcohol copolymer (A) having the content of an ethylene unit of 0.5 to 19 mol % relative to all structural units and a particle (B), wherein the content of the particle (B) is 1 part by mass or more and less than 100 parts by mass based on 100 parts by mass of the ethylene-vinyl alcohol copolymer (A).

A novel PVC board and method of manufacture. The board includes a compressible layer to provide flooring that is comfortable to walk on, and a polyurethane surface that is easy to clean. The method of manufacture simplifies the production process, and improves production time and efficiency.

Provided are a sheet molding compound having good handleability and good reinforcing fiber filling properties; and a molded article having good mechanical properties and good heat resistance.

The sheet molding compound comprises a thermosetting resin composition and reinforcing fiber bundles, in which the thermosetting resin composition comprises an epoxy resin component (E) comprising a reaction product (1) of the following component (A) and the following component (B), and the following component (C). The molded article is an article obtained by press-molding the sheet molding compound.

A resin composition is comprised of an epoxy resin comprised of a solid epoxy resin and a liquid polyurethane toughener that is dissolved in the epoxy resin and, upon curing of the liquid epoxy resin, the liquid polyurethane toughener phase separates into particles having a particle size of 50 nm to 2 micrometers, an epoxy hardener; and an epoxy soluble latent catalyst. The resin composition provides a more homogeneous infusion of the resin into a fibrous material for forming a prepreg and ultimately an epoxy fiber reinforced composition with improved toughness without sacrificing speed of impregnation or uniformity of the epoxy matrix within the composite.

Provided is a resin composition for use in producing a resin film by solution casting, the resin composition including a methacrylic polymer that has excellent heat resistance and that allows for a high evaporation rate of a solvent when the solvent is evaporated from a cast layer in solution casting. The resin composition for use in film production by solution casting includes a methacrylic polymer (a), and the methacrylic polymer (a) is a copolymer including a methyl methacrylate unit and at least one drying-accelerating comonomer unit and has a glass transition temperature of 110° C. or higher. The drying-accelerating comonomer unit is preferably selected from the group consisting of: an N-substituted maleimide monomer unit; a methacrylic ester unit containing an ester moiety in the form of a primary, secondary, or aromatic hydrocarbon group having 2 to 8 carbon atoms; a methacrylic ester unit containing an ester moiety in the form of a saturated hydrocarbon group having a fused ring structure and having 7 to 16 carbon atoms; a methacrylic ester unit containing an ester moiety in the form of a linear or branched group containing an ether bond; and a styrenic monomer unit.