Provided is an optical glass having a composition including, by mol %: 0% to 15 % B.sub.2O.sub.3; 25% to 40% P.sub.2O.sub.5, the total content of B.sub.2O.sub.3 and P.sub.2O.sub.5 being 35% to 45%; 0% to 10% Al.sub.2O.sub.3; 5% to 15% Li.sub.2O; 0% to 15% Na.sub.2O; 0% to 5% K.sub.2O; 0% to 35% MgO; 0% to 35% CaO, the total content of MgO and CaO being 20% or more; 0% to 5 % ZnO; 0% to 3% ZrO.sub.2; 0% to 3% Y.sub.2O.sub.3; 0% to 3% La.sub.2O.sub.3; and 0% to 3% Gd.sub.2O.sub.3. The composition does not contain SrO and BaO.

Provided is an optical glass having a composition including, by mol %: 0% to 15 % B.sub.2O.sub.3; 25% to 40% P.sub.2O.sub.5, the total content of B.sub.2O.sub.3 and P.sub.2O.sub.5 being 35% to 45%; 0% to 10% Al.sub.2O.sub.3; 5% to 15% Li.sub.2O; 0% to 15% Na.sub.2O; 0% to 5% K.sub.2O; 0% to 35% MgO; 0% to 35% CaO, the total content of MgO and CaO being 20% or more; 0% to 5 % ZnO; 0% to 3% ZrO.sub.2; 0% to 3% Y.sub.2O.sub.3; 0% to 3% La.sub.2O.sub.3; and 0% to 3% Gd.sub.2O.sub.3. The composition does not contain SrO and BaO.

An antibacterial fiber that exhibits predetermined antibacterial properties even when washed repeatedly for 50 or more times, and a method for producing an antibacterial fiber are provided.

Disclosed are an antibacterial fiber containing a thermoplastic resin and antibacterial glass particles, and a method for producing the antibacterial fiber, the antibacterial fiber having cracks extending along the length direction of the antibacterial fiber on the surface of the antibacterial fiber, each of the cracks being in a state of having at least one of the antibacterial glass particles sandwiched therein.

An antimicrobial glass tablet that releases silver ions when brought into direct contact with water, containing: Ag.sub.2O within the range of above 5% by weight but less than 10% by weight, ZnO below 10% by weight, P.sub.2O.sub.5, CaO, K.sub.2O, Al.sub.2O.sub.3, and MgO.

An antimicrobial glass tablet that releases silver ions when brought into direct contact with water, containing: Ag.sub.2O within the range of above 5% by weight but less than 10% by weight, ZnO below 10% by weight, P.sub.2O.sub.5, CaO, K.sub.2O, Al.sub.2O.sub.3, and MgO.

A standalone lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner.

A standalone lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner.

A dental glass includes, in terms of oxide:phosphorus (P.sub.2O.sub.5) by greater than or equal to 40% by mass and less than or equal to 70% by mass; potassium (K.sub.2O) by greater than or equal to 20% by mass and less than or equal to 40% by mass; and calcium (CaO) by greater than or equal to 1% by mass and less than or equal to 20% by mass, wherein the dental glass does not substantially contain silicon and aluminum.

A technical object of the present invention is to devise a top plate for a cooking appliance that can suppress proliferation of bacteria or mold. In order to achieve the technical object, the top plate for a cooking appliance of the present invention includes: a crystallized glass substrate having a cooking surface on which a cooking device is placed; and a decorative layer formed on the cooking surface, in which the decorative layer includes 30 vol % to 100 vol % of ZnOB.sub.2O.sub.3-based glass and 0 vol % to 70 vol % of refractory filler powder.

A technical object of the present invention is to devise a top plate for a cooking appliance that can suppress proliferation of bacteria or mold. In order to achieve the technical object, the top plate for a cooking appliance of the present invention includes: a crystallized glass substrate having a cooking surface on which a cooking device is placed; and a decorative layer formed on the cooking surface, in which the decorative layer includes 30 vol % to 100 vol % of ZnOB.sub.2O.sub.3-based glass and 0 vol % to 70 vol % of refractory filler powder.