A composite has repeating domains of an inorganic glass and a polymer, such that the inorganic glass and the polymer each have a glass transition temperature (T.sub.g) or softening temperature of less than 450° C., and at least 50% of the inorganic glass domains have a length of less than 30 μm as measured along at least one cross-sectional dimension.

A resin composition for coating an optical fiber comprises: a base resin containing a photopolymerizable compound and a photopolymerization initiator; and hydrophobic inorganic oxide particles, wherein the photopolymerizable compound comprises urethane (meth)acrylate and aliphatic epoxy (meth)acrylate, and the content of the aliphatic epoxy (meth)acrylate is 1.0% by mass or more and 45% by mass or less based on the total amount of the photopolymerizable compound.

Loose-fill insulating products may include mineral wool, in particular glass wool or rock wool, in the form of down, nodules, or flakes, which are obtainable by an aeration that allows the mineral wool to be expanded. The mass distribution of the agglomerates may be obtained by screening 2 to 5 g of insulating product using a vibrating sieve shaker with a stack of screens and a maximum amplitude of oscillation of 3 mm set to 1.5 to 2.5 mm, 1.8 to 2.2 mm, or 2 mm, for 5 minutes, satisfies a relationship

(% agglomerates 6-13)−(% agglomerates<6)≥5%,

where (% agglomerates 6-13) is mass percentage of agglomerates passing through 6 mm and 13 mm screens, and (% agglomerates<6) is mass percentage of agglomerates passing through a 6 mm screen.

A method of bonding together surfaces of two or more elements. The method includes the steps of providing two or more elements, applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other, and curing the adhesive, wherein the adhesive comprises at least one hydrocolloid.

A mineral wool having a chemical composition comprising the following constituents, as percentages by weight:

TABLE-US-00001 SiO.sub.2 39-50%  Al.sub.2O.sub.3 19.5-27%   CaO 5-12% MgO  1-5% Na.sub.2O 5-20% K.sub.2O 0-15% Fe.sub.2O.sub.3 2-15% B.sub.2O.sub.3  0-2%
a MgO/RO weight ratio of more than 0.10 and less than 0.50, and
a RO/(RO+R.sub.2O) weight ratio of less than 0.55,
in which RO represents the alkaline earth oxides CaO, MgO, BaO and SrO, and
R.sub.2O represents the alkali oxides Na.sub.2O and K.sub.2O.

A glass composition is provided that includes about 55.0 to 60.4% by weight SiO.sub.2, about 19.0 to 25.0% by weight Al.sub.2O.sub.3, about 8.0 to 15.0% by weight MgO, about 7 to 12.0% by weight CaO, less than 0.5% by weight Li.sub.2O, 0.0 to about 1.0% by weight Na.sub.2O, and 0 to about 1.5% by weight TiO.sub.2. The glass composition has a fiberizing temperature of no greater than about 2,500° F. Glass fibers formed from the inventive composition may be used in applications that require high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades and aerospace structures.

This invention relates to a method for manufacturing a mineral wool board, comprising the following steps in the given order: providing mineral wool fibers having a fiber length of 50 to 800 μm; gluing the fibers with a liquid binder comprising phenolic resin, whereby the ratio of binder (based on the solids content of the resin of the binder) to mineral wool fibers is 5 to 30% by weight, and pressing the glued fibers using heat and pressure.

New glass compositions and applications thereof are disclosed. A glass composition as described herein can include 50 to 55 weight percent SiO.sub.2, 17 to 26 weight percent B.sub.2O.sub.3, 13 to 19 weight percent Al.sub.2O.sub.3, 0 to 8.5 weight percent MgO, 0 to 7.5 weight percent ZnO, 0 to 6 weight percent CaO, 0 to 1.5 weight percent Li.sub.2O, 0 to 1.5 weight percent F.sub.2, 0 to 1 weight percent Na.sub.2O, 0 to 1 weight percent Fe.sub.2O.sub.3, 0 to 1 weight percent TiO.sub.2, and 0 to 8 weight percent of other constituents. Also described herein are glass fibers formed from such compositions, composites, and articles of manufacture comprising the glass compositions and/or glass fibers.

A glass composition is disclosed that comprises SiO.sub.2 in an amount from 50 to 58% by weight; Al.sub.2O.sub.3 in an amount from 18 to 23% by weight; less than 18% by weight of CaO and MgO; at least 5% by weight of Y.sub.2O.sub.3 and La.sub.2O.sub.3, wherein Y.sub.2O.sub.3 and La.sub.2O.sub.3 are present in a ratio R1 (R1=Y.sub.2O.sub.3/La.sub.2O.sub.3) between 2 and 4. A glass fiber formed from the glass composition has a sonic fiber elastic modulus of at least 94.5 GPa.

To provide a glass composition for glass fiber that includes biosolubility and can achieve long fiber formation. The glass composition for glass fiber of the present invention includes SiO.sub.2 in the range of 35.0 to 55.0% by mass, B.sub.2O.sub.3 in the range of 10.0 to 30.0% by mass, Al.sub.2O.sub.3 in the range of 14.5 to 30.0% by mass, and CaO and MgO in the range of 8.7 to 25.0% by mass in total, with respect to the total amount, and the content S of SiO.sub.2, the content B of B.sub.2O.sub.3, the content A of Al.sub.2O.sub.3, the content C of CaO, and the content M of MgO satisfy the following formula (1):

[00001]$\begin{array}{cc}11.3\le \text{S}\times \left(\text{C}+\text{M}\right)/\left(\text{A}+\text{B}\right)\le 20.7& \text{­­­(1)}\end{array}$