Abstract: The present invention relates to an alkali-free glass having a strain point of 700° C. or higher and 740° C. or lower, a density of 2.6 g/cm3 or lower, a Young's modulus of 90 GPa or higher and 100 GPa or lower, an average coefficient of thermal expansion at 50° C. to 350° C. of 30×10?7/K or higher and 39×10?7/K or lower, a temperature T2 at which a glass viscosity reaches 102 dPa·s of 1590° C. or higher and 1690° C. or lower, a temperature T4 at which the glass viscosity reaches 104 dPa·s of 1350° C. or lower, a glass surface devitrification temperature (Tc) of lower than (T4+80)° C., and a specific elastic modulus of 36 MN·m/kg or higher, and including a prescribed glass composition.

Abstract: An alkali-free glass includes, as represented by mol % based on oxides: 50 to 80% of SiO2; 2 to 6% of Al2O3; 18 to 35% of B2O3; 1 to 6% of MgO; 0 to 6% of CaO; 0 to 6% of SrO; and 0 to 3% of BaO. A formula (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the formula (A) is 2% or more and 6% or less. A formula (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the formula (B) is ?3% or more and 2% or less.

Abstract: An alkali-free glass includes, as represented by mol % based on oxides: 50 to 80% of SiO2; 2 to 6% of Al2O3; 18 to 35% of B2O3; 1 to 6% of MgO; 0 to 6% of CaO; 0 to 6% of SrO; and 0 to 3% of BaO. A formula (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the formula (A) is 2% or more and 6% or less. A formula (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the formula (B) is ?3% or more and 2% or less.

Abstract: A cyclic olefin resin composition of the present invention contains a cyclic olefin copolymer (A) and a boric acid ester compound (B).

Abstract: The present invention relates to a glass including, in mol % in terms of oxides: 68% or more of SiO2; 0.1% to 8% of Al2O3; and 0.1% to 4% of SrO, in which [SiO2]+[B2O3] is 88% or more, [B2O3]?([RO]+[R2O]?[Al2O3]) is 27% or less, a relative dielectric constant at 25° C. and a frequency of 10 GHz is 4.5 or less, a dielectric loss tangent at 25° C. and a frequency of 10 GHz is 0.005 or less, ?Abs-OH is 4.0 or less, a total content (RO) of MgO, CaO, SrO, and BaO is more than 0% to 6%, a total content (R2O) of Li2O, Na2O, and K2O is 0% to 1%, [Al2O3]?[RO] is ?3% to less than 8%, [Al2O3]×[RO] is more than 0 to 30, [MgO]+[CaO] is 0.1% to 5.9%, and [MgO]/([MgO]+[Al2O3]) is 0 to 0.45.

Abstract: An alkali-free glass, includes, as represented by mol % based on oxides: 50% to 76% of SiO2; 2% to 6% of Al2O3; 18% to 35% of B2O3; 1% to 3.5% of MgO; 0.5% to 4% of CaO; 1% to 4.5% of SrO; and 0% to 3% of BaO, in which an expression (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the expression (A) is 3.5 to 6, an expression (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the expression (B) is ?2 to 2, an expression (J) is ([MgO]+[CaO])/([MgO]+[CaO]+[SrO]+[BaO]), and a value of the expression (J) is 0.2 to 0.7, and ??-OH is 0 mm?1 to 0.1 mm?1.

Abstract: The present invention relates to an alkali-free glass having a strain point of 700° C. or higher and 740° C. or lower, a density of 2.6 g/cm3 or lower, a Young's modulus of 90 GPa or higher and 100 GPa or lower, an average coefficient of thermal expansion at 50° C. to 350° C. of 30×10?7/K or higher and 39×10?7/K or lower, a temperature T2 at which a glass viscosity reaches 102 dPa·s of 1590° C. or higher and 1690° C. or lower, a temperature T4 at which the glass viscosity reaches 104 dPa·s of 1350° C. or lower, a glass surface devitrification temperature (Tc) of lower than (T4+80)° C., and a specific elastic modulus of 36 MN·m/kg or higher, and including a prescribed glass composition.

Abstract: An alkali-free glass includes, as represented by mol % based on oxides: 50 to 80% of SiO2; 2 to 6% of Al2O3; 18 to 35% of B2O3; 1 to 6% of MgO; 0 to 6% of CaO; 0 to 6% of SrO; and 0 to 3% of BaO. A formula (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the formula (A) is 2% or more and 6% or less. A formula (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the formula (B) is ?3% or more and 2% or less.

Abstract: To provide an insulating member with which a high insulating effect is stably obtained, and a method for attaching it. An insulating member 2 comprising a vacuum insulation panel 10 in a board-like shape and an elastic body 12A, wherein the vacuum insulation panel 10 has a core material and a gas barrier film covering the core material, the core material is decompressed and encapsulated in an outer sheath formed of the gas barrier film, the elastic body 12A has a degree of elongation of at least 10%, an Asker F hardness of at least 10 and an Asker C hardness of at most 30, and the elastic body 12A is provided on the entire surface of an application surface 10a of the vacuum insulation panel 10.

Abstract: To provide an insulating member with which a high insulating effect is stably obtained, and a method for attaching it. An insulating member 2 comprising a vacuum insulation panel 10 in a board-like shape and an elastic body 12A, wherein the vacuum insulation panel 10 has a core material and a gas barrier film covering the core material, the core material is decompressed and encapsulated in an outer sheath formed of the gas barrier film, the elastic body 12A has a degree of elongation of at least 10%, an Asker F hardness of at least 10 and an Asker C hardness of at most 30, and the elastic body 12A is provided on the entire surface of an application surface 10a of the vacuum insulation panel 10.

Abstract: A vacuum insulation panel, which has a high degree of freedom in shape, is capable of stably obtaining an excellent insulating property and has a long lifetime, is provided. A process for manufacturing a vacuum insulation panel (1) includes a step of pressurizing core members (10) under a pressure of at most 1×106 Pa to form a molded product (12), the core members containing fumed silica with a binder (A?) 10a, which includes fumed silica (A) and a binder applied to surfaces thereof; and a step of decompressing and encapsulating the molded product (12) in an outer sheath having an airtight property. A vacuum insulation panel includes an outer sheath (14) having an airtight property; a molded product (12) having core members (10), the core members containing fumed silica with a binder (A?), which includes fumed silica (A) and a binder applied to surfaces thereof; and the molded product (12) being decompressed and encapsulated in the outer sheath (14).