Lg Chem, Ltd

Won-Bae Lim

Dong-Kwon Lee

Sang-Kook Kim

Du-Sun Hwang

Su-Hwan Kim

Da-Jeong Kim

Duk-Sik Ha

Jung-Sik Bang

Han-Kook Kim

The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 61 to 73 wt % of SiO; 0.5 to 3.9 wt % of BO; 3.5 to 13.5 wt % of AlO; 9 to 13 wt % of MgO; 1 to 8 wt % of CaO; and 4 to 10 wt % of SrO, based on the total weight of oxides present therein.

Alkali-free glass and preparation thereof

The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 46 to 57 wt % of SiO; 3.5 to 7.5 wt % of BO; 21 to 29 wt % of AlO; 3 to 14 wt % of MgO; 11 to 16 wt % of CaO; and 1 to 5 wt % of SrO, based on the total weight of oxides present therein.

The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 68 to 75 wt % of SiO; 1 to 3 wt % of BO; 4 to 13 wt % of AlO; 1 to 6 wt % of MgO; 1 to 11 wt % of CaO; 4 to 9 wt % of SrO; and 3 to 7 wt % of BaO, based on the total weight of oxides present therein.

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Daejeon, South Korea

Won-Bae Lim