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    • 6. 发明申请
    • GLASS COMPOSITION
    • 玻璃组合物
    • WO2008117088A1
    • 2008-10-02
    • PCT/GB2008/050208
    • 2008-03-20
    • PILKINGTON GROUP LIMITEDBUCKETT, JohnHAUGHEY, KeithMCSPORRAN, Neil
    • BUCKETT, JohnHAUGHEY, KeithMCSPORRAN, Neil
    • C03C3/078
    • C03C3/078
    • Flat glass composition comprising the following (expressed as percentages by weight): SiO 2 60 75 %; Al 2 O 3 0 5 %; Na 2 O 10 18 %; K 2 O0 5.5 %; CaO0 5 %; MgO 0- 2 %; SO 3 0 1 %; Fe 2 O 3 (totaliron) > 0.01 %; TiO 2 0 -1 %and one or both of: SrO 0 -15 %; BaO 0- 15 % with the proviso that the summed amount ofSrO and BaO is greater than 4 %. A preferred composition comprises: SiO 2 65 -74 %; Al 2 O 3 0 -3 %; Na 2 O 13 16 %; K 2 O 0- 2 %; CaO 1- 4.9 %; MgO 0- 2 %; SO 3 0- 1 %; Fe 2 O 3 (totaliron) > 0.01 %; TiO 2 0 1 %; BaO 4 -10 %; SrO 0- 5 %, wherein the summed amount of the alkaline earth metal constituents is in the range 10 -13 % and the summed amount of the alkali metal constituents is in the range 14 -16 %. The ferrous level of the glass may be greater than or equal to 28 %, its performance in a thickness of 5 mm or less may be greater than or equal to 29 at LT A ≥ 70 %, and greater than or equal to 27 at LT A ≥ 75 %, andits liquidus temperature may be less than or equal to 980 °C.
    • 平板玻璃组合物,其包含以下(以重量百分数表示):SiO 2 60 75%; Al 2 O 3 5%5%; Na 2 O 10 18%; K 2 O0 5.5%; CaO0 5%; MgO 0-2%; SO 3 3 0 1%; Fe 2 O 3(总铁)> 0.01%; TiO 2 2 0 -1%和以下之一或两者:SrO 0 -15%; BaO 0-15%,条件是SrO和BaO的总量大于4%。 优选的组合物包括:SiO 2 65-74%; Al 2 O 3 3 -3%; Na 2 O 13 16%; K 2 O 0-2%; CaO 1- 4.9%; MgO 0-2%; SO 3 0-1%; Fe 2 O 3(总铁)> 0.01%; TiO 2 2%; 宝奥4 -10%; SrO 0-5%,其中碱土金属组分的总量为10-13%,碱金属组分的总量为14-16%。 玻璃的亚铁含量可以大于或等于28%,其厚度为5mm或更小的性能在LTA = 70%时可能大于或等于29,更大 在LTA A = 75%时为27以上,液相线温度可以低于或等于980℃。