An aqueous binder composition for mineral fibers comprises: (a) a sugar syrup containing a reducing sugar and having a dextrose equivalent DE of at least 50 and less than 85; (b) a polycarboxylic acid component; (c) an amine component; and, optionally, (d) a reaction product of a polycarboxylic acid component (b) and an amine component (c).

Provided is an insulating varnish composition, including: two or more kinds of epoxy resins; and a filler having an average primary particle diameter of 500 nm or less, wherein the two or more kinds of epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more kinds of epoxy resins.

Provided are an epoxy resin curing agent, an epoxy resin composition, a cured product thereof, a fiber-reinforced composite material, and a high-pressure gas container including the fiber-reinforced composite material, the epoxy resin curing agent including the following components (A-1) and (A-2): (A-1) a reaction composition containing polycondensation reaction product of aniline derivative and formaldehyde (A-2) a reaction composition containing a reaction product of styrene and a compound represented by the following General Formula (1):

H.sub.2NCH.sub.2-A-CH.sub.2NH.sub.2(1) (in Formula (1), A is a 1,2-phenylene group, a 1,3-phenylene group, or a 1,4-phenylene group).

In the epoxy resin curing agent, a content of the component (A-1) is from 50 to 95 mass %, and a content of the component (A-2) is from 5 to 50 mass %.

The present invention relates to a tyre for vehicle wheels comprising at least one structural component comprising a vulcanised elastomeric compound obtained by vulcanising a vulcanisable elastomeric compound made by mixing an elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) a reinforcing filler comprising (a) needle-shaped morphology silicate fibres having nanometric size, and (b) finely dispersed carbon black having a surface area NSA greater than 100 m.sup.2/g and a surface area OAN greater than 100 ml/100 g, and (c) optionally, conventional silica.

An epoxy resin composition contains an epoxy resin (A) and an epoxy resin curing agent (B). The epoxy resin (A) includes an epoxy resin (A1) having a glycidyl group derived from resorcinol, and an epoxy resin (A2) such as an epoxy resin having a glycidyl group derived from bisphenol F. The epoxy resin curing agent (B) includes resorcinol (B1) and/or the like. The epoxy resin composition has from 7 to 60 mass % epoxy resin curing agent (B) content.

A method of reducing the formaldehyde emission of a mineral fiber product bonded with a urea-modified phenol-formaldehyde resol resin-type binder comprises adding dextrose to the binder composition during and/or after preparation of the binder composition but before curing of the binder composition applied to the mineral fibers.

Proposed are a prepreg, an inorganic fiber composite material including the same, and a method for manufacturing the inorganic fiber composite material, in which an inorganic fiber wet-laid nonwoven fabric is produced by mixing inorganic fibers with thermoplastic fibers and a prepreg is formed from the inorganic fiber wet-laid nonwoven fabric, thereby simplifying the process steps and improving productivity.

An impact energy dissipation plate for anti-ballistic armor, the dissipation plate including a damping material including a fibrous reinforcement bonded by an organic matrix including a thermosetting resin, the reinforcement including inorganic fibers assembled in the form of yarns, the damping material having the following features the volume fraction of fibrous reinforcement of the damping material is between 20% and 70%, the remainder to 100% including the matrix and porosity; the fibrous reinforcement includes at least 50% by volume of silica fiber yarns of which SiO.sub.2 content by mass of more than 90%, and the porosity of the damping material is between 2% and 10% by volume.

A high-temperature surfacing film formed from a curable resin composition containing: (i) at least one bismaleimide (BMI) monomer: (ii) at least one co-monomer that is reactive with the BMI monomer: (iii) a pre-react adduct that enhances film-forming properties and improves toughness: (iv) inorganic microspheres; and (v) a flow control agent in the form of particulate inorganic fillers that are not microspheres.