Lead- and arsenic-free borosilicate glass having improved...

Details Lead- and arsenic-free borosilicate glass having improved... Lead- and arsenic-free borosilicate glass having improved...

C - Chemistry, Metallurgy

03

C

C03C 3/091 (2006.01)

Patent

CA 2423548

A lead- and arsenic-free borosilicate glass having an improved melting characteristic is described. The melting rate of the glass was improved dramatically by making the composition substantially free of MgO and CaO and adding 1.0 to 4.0 weight percent BaO. The improved melting characteristic yielded up to a ninety-nine percent reduction in the number of unmelted batch stones.

On décrit un verre de borosilicate sans plomb et sans arsenic ayant des propriétés améliorées à la fusion. La vitesse de fusion du verre a été améliorée de manière substantielle en en éliminant presque totalement le MgO et le CaO, et en y ajoutant du BaO dans une proportion de 1,0 à 4,0 en poids. La fusion améliorée a permis de réduire dans une proportion allant jusqu'à 99 % le nombre de blocs non fondus.

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