Patent ID: 6379805
Filing Date: 2002-04-30
Classification: B32B,C04B,Y10T

Abstract:
A low temperature-fired porcelain article comprising a barium component in an amount of 40 to 65 wt % when calculated as BaO, a silicon component in an amount of 25 to 46 wt % when calculated as SiO2, an aluminum component in an amount of 0.1 to 20 wt % when calculated as Al2O3, a boron component in an amount of 0.3 to 1.5 wt % when calculated as B2O3, and a zinc component in an amount of 0.5 to 20 wt % when calculated as ZnO, wherein the porcelain article has a dielectric constant âˆˆr of not more than 10, and a quality coefficient Q of not less than 2500, wherein a glass comprising SiO2, B2O3 and ZnO is used as a part of starting materials for the porcelain article.