Patent ID: 6605554
Filing Date: 2003-08-12
Classification: C03C,C04B

Abstract:
A glass-ceramic in the form of a powder which has the formula:SiO2â€”Me2â€²â€³O3â€”Meâ€³O wherein Meâ€³ is selected from the group consisting of Ca, Ba, Mg, Zn and mixtures thereof; wherein Meâ€²â€³ is selected from the group consisting of Al, B and mixtures thereof and the weight percent of each of SiO2; Me2â€²â€³O3; and Meâ€³O is: SiO2=30-65%; Me2â€²â€³O3=5-less than 20%; and Meâ€³O=5-40%.