A resin composition comprises a base resin containing an urethane (meth)acrylate oligomer, a monomer having a phenoxy group, and a photopolymerization initiator, and hydrophobic inorganic oxide particles, wherein the viscosity is 300 mPa.Math.s or more and 4200 mPa.Math.s or less at 45 C. and the content of the monomer having a phenoxy group is 1% by mass or more and 30% by mass or less based on the total amount of the base resin.

The present invention provides a high-modulus glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 55-64% SiO.sub.2, 13-24% Al.sub.2O.sub.3, 0.1-6% Y.sub.2O.sub.3, 3.4-10.9% CaO, 8-14% MgO, lower than 22% CaO+MgO+SrO, lower than 2% Li.sub.2O+Na.sub.2O+K.sub.2O, lower than 2% TiO.sub.2, lower than 1.5% Fe.sub.2O.sub.3, 0-1.2% La.sub.2O.sub.3, wherein the range of the weight percentage ratio C1=(Li.sub.2O+Na.sub.2O+K.sub.2O)/(Y.sub.2O.sub.3+La.sub.2O.sub.3) is greater than 0.26. Said composition can significantly increase the glass elastic modulus, effectively inhibit the crystallization tendency of glass, decrease the liquidus temperature, secure a desirable temperature range (T) for fiber formation and enhance the fining of molten glass, thus making it particularly suitable for production of high-modulus glass fiber with refractory-lined furnaces.

Provided is a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures. The glass composition for glass fiber includes: SiO.sub.2 in the range of 52.0 to 59.5% by mass; B.sub.2O.sub.3 in the range of 17.5 to 25.5% by mass; Al.sub.2O.sub.3 in the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes F.sub.2 and Cl.sub.2 in the range of 0.1 to 2.5% by mass in total, with respect to the total amount.

A binding compound for mineral or organic fibres, includes from 40 to 95 wt % of furan resin, and from 5 to 60 wt % of at least one reducing sugar and/or of at least one non-reducing sugar, relative to the total dry weight of the composition, the binding composition having a dry matter content between 0.5 to 50 wt %.

Fiber coatings with low Young's modulus, low fiber pullout force for fibers in the as-drawn state, and small time-dependent increases in pullout force as the fiber ages. The fiber coatings are cured products of coating compositions that include an oligomer formed from an isocyanate, a hydroxy acrylate compound and a polyol. The oligomer includes a polyether urethane acrylate and a di-adduct compound. The reaction mixture used to form the oligomer includes a molar ratio of isocyanate:hydroxy acrylate:polyol of n:m:p, where when p is 2, n is in the range from 3.0 to 5.0 and m is in the range from 1.50n-3 to 2.50n-5. Control of the n:m:p ratio leads to compositions that, when cured, provide coatings and cured products having low Young's modulus, low pullout force on glass, and weak variations with time as the fiber ages.

Glass compositions and glass fibers having low dielectric constants and low dissipation factors that may be suitable for use in electronic applications and articles are disclosed. The glass fibers and compositions of the present invention may include between 48.0 to 58.0 weight percent SiO.sub.2; between 15.0 and 26.0 weight percent B.sub.2O.sub.3; between 12.0 and 18.0 weight percent Al.sub.2O.sub.3; between greater than 0.25 and 3.0 weight percent P.sub.2O.sub.5; between greater than 0.25 and 7.00 weight percent CaO; 5.0 or less weight percent MgO; between greater than 0 and 1.5 weight percent SnO.sub.2; and 6.0 or less weight percent TiO.sub.2. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius and a liquidus temperature greater than 1000 degrees Celsius.

A process for the manufacture of an insulating product based on mineral fibres bonded by an organic binder, includes applying a sizing composition to the mineral fibres, forming an assembly of the mineral fibres, heating the assembly of mineral fibres until the sizing composition has cured, wherein the sizing composition includes the following constituents within the limits defined below, expressed as fractions by weight with respect to the total weight of the composition: from 80% to 98% of water, from 2% to 20% of water-soluble poly(furfuryl alcohol) and less than 0.5% of furfuryl alcohol, and the mineral fibres are fibres of aluminosilicate glass including aluminum oxide, Al.sub.2O.sub.3, in a fraction by weight of between 14% and 28%.

Provided are a high-performance glass fiber composition, and a glass fiber and composite material thereof. The content, given in weight percentage, of each component of the glass fibre composition is as follows: 52-64% of SiO.sub.2, 12-24% of Al.sub.2O.sub.3, 0.05-8% of Y.sub.2O.sub.3+La.sub.2O.sub.3+Gd.sub.2O.sub.3, less than 2.5% of Li.sub.2O+Na.sub.2O+K.sub.2O, more than 1% of K.sub.2O, 10-24% of CaO+MgO+SrO, 2-14% of CaO, less than 13% of MgO, less than 2% of TiO.sub.2, and less than 1.5% of Fe.sub.2O.sub.3. The composition significantly increases the mechanical strength and the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate, the surface tension and the bubble rate of glass. The composition is particularly suitable for the tank furnace production of a high-strength high-modulus glass fiber having a low bubble rate.

Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below 82 C., and/or a viscosity ratios, such as between 25 C. and 85 C., of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.

A fire-protecting insulation product has air-laid mineral wool fibres and a binder. The binder is the result of curing a binder composition comprising at least one hydrocolloid. The product further comprises a particulate endothermic material.