Ppg Industries Ohio, Inc.

Vitro, S.a.b. De C.v.

Dennis G Smith

Larry J Shelestak

Mehran Arbab

Robert B Heithoff

James M Baldauff

Mary T Strzelecki

A glass composition is disclosed. The glass composition includes base glass composition including SiOfrom 65 to 75 weight percent, NaO from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, AlOfrom 0 to 5 weight percent, KO from 0 to 5 weight percent, and BaO from 0 to 1 weight percent, and a colorant and property modifying portion including total iron from up to 0.02 weight percent, CeOfrom 0.05 weight percent to 1.5 weight percent, CoO up to 50 PPM, Se up to 15 PPM, CrOup to 500 PPM, CuO up to 0.5 weight percent, VOup to 0.3 weight percent, TiOup to 1 weight percent, NiO up to 200 PPM, ErOup to 3 weight percent, MnOup to 0.6 weight percent, and NdOup to 2 weight percent, wherein the glass composition has a redox ratio up to 0.55.

Colored glass compositions

A glass composition for forming a blue colored glass is disclosed. The glass composition is made up of a base glass portion, iron oxide, and at least one first additive compound selected from NdOin an amount up to 1 weight percent and/or CuO in an amount up to 0.5 weight percent. The base glass portion has the following components: SiOfrom 66 to 75 weight percent; NaO from 10 to 20 weight percent; CaO from 5 to 15 weight percent; MgO from 0 to 5 weight percent; AlOfrom 0 to 5 weight percent; BOfrom 0 to 5 weight percent; and KO from 0 to 5 weight percent. The total iron in the glass composition ranges from 0.3 to 1.2 weight percent, and the glass composition has a redox ratio ranging from 0.15 to 0.65.

High performance blue glass

A glass composition that includes a base glass composition including: SiOfrom 65 to 75 weight percent, NaO from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, AlOfrom 0 to 5 weight percent, KO from 0 to 5 weight percent and BaO 0 to 1 weight percent, and a colorant and property modifying portion including total iron from 0.25 to 0.9 weight percent, CrOfrom 6 PPM to 400 PPM, ErOfrom 0.3 to 3.0 weight percent, and TiOfrom 0.1 to 0.8 weight percent, wherein the glass composition has a redox ratio ranging from 0.15 to 0.62.

Gray glass composition

A novel glass composition is disclosed. The glass composition includes a base glass composition made up of SiOfrom 65 to 75 weight percent, NaO from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, AlOfrom 0 to 5 weight percent, KO from 0 to 5 weight percent, BO0 to 5%, and MnO0 to 0.5%, and a colorant and property modifying material portion made up of total iron up to 0.65 weight percent, Se ranging from 2 PPM to 10 PPM, at least one UV absorber selected from CeO, VO, TiOand MoO, CoO up to 20 PPM, and CrOup to 75 PPM, wherein the glass composition has a redox ratio ranging from 0.2 to 0.6.

UV absorbing gray glass composition

A neutral gray colored glass composition for automotive vision panels having reduced transmitted color shift characteristics is provided. The glass composition has a base portion including 65 to 75 weight percent SiO, 10 to 20 weight percent NaO, 5 to 15 weight percent CaO, 0 to 5 weight percent MgO, 0 to 5 weight percent AlO, and 0 to 5 weight percent KO. The composition also includes major colorants including 0.30 to 0.75 weight percent FeO, 0 to 15 ppm CoO, and 1 to 15 ppm Se. The glass has a luminous transmittance of at least 65 percent at a thickness of 3.9 mm, a redox ratio of 0.2 to 0.675, a TSET of less than or equal to 65 percent, and a standard color shift of less than 6.

Colored glass compositions and-automotive vision panels with-reduced transmitted-color shift

A blue colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent can form transparent glass panel sets for mounting in automobiles. A non-limiting glass composition includes a standard soda-lime-silica glass base composition and a solar radiation absorbing and colorant portion having 0.9 to 2.0 percent by weight total iron, 0.15 to 0.65 percent by weight FeO, 90 to 250 PPM CoO, and optionally up to 12 PPM Se and up to 0.9 wt % TiO, and preferably 1 to 1.4 percent by weight total iron, 0.20 to 0.50 percent by weight FeO, 100 to 150 PPM CoO, up to 8 PPM Se, and up to 0.5 wt % TiO, at a thickness of 0.160 inches (4.06 millimeters) the glass has a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent.

Limited visible transmission blue glasses

A blue-green colored glass composition includes a base portion, such as a conventional soda-lime-silica base, and major colorants. In one embodiment, the major colorants include 0.7 to 0.9 weight percent total iron (FeO), 0.2 to 0.3 weight percent FeO, and 0 to 5 ppm CoO. The glass is characterized by a dominant wavelength in the range of 490 nm to 495 nm and an excitation purity in the range of 3% to 11%. The glass of the invention can be essentially free of Se.

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Butler, PA, United States of America

Dennis G Smith