发明公开
EP2958866A1 ENERGY EFFICIENT SODA LIME SILICATE GLASS COMPOSITIONS USING BORAX PENTAHYDRATE
审中-公开
ENERGIEEFFIZIENTE ATEMKALK-SILIKATGLAS-ZUSAMMENSETZUNGEN UNTER VERWENDUNG VON BORAX-PENTAHYDRAT
- 专利标题： ENERGY EFFICIENT SODA LIME SILICATE GLASS COMPOSITIONS USING BORAX PENTAHYDRATE
- 专利标题（中）： ENERGIEEFFIZIENTE ATEMKALK-SILIKATGLAS-ZUSAMMENSETZUNGEN UNTER VERWENDUNG VON BORAX-PENTAHYDRAT
-
申请号： EP14708334.9申请日： 2014-01-15
-
公开(公告)号： EP2958866A1公开(公告)日： 2015-12-30
- 发明人: KARMAKAR, Basudeb , MOLLA, Atiar, Rahaman , TARAFDER, Anal , SEN, Ranjan
- 申请人： Council of Scientific & Industrial Research
- 申请人地址： Anusandhan Bhawan, 2 Rafi Marg New Delhi 110 001 IN
- 专利权人： Council of Scientific & Industrial Research
- 当前专利权人： Council of Scientific & Industrial Research
- 当前专利权人地址： Anusandhan Bhawan, 2 Rafi Marg New Delhi 110 001 IN
- 代理机构： Hirsch & Associés
- 优先权： INDE04652013 20130219
- 国际公布： WO2014128714 20140828
- 主分类号： C03C1/02
- IPC分类号： C03C1/02 ; C03C3/064 ; C03C3/087 ; C03C3/091
摘要：
The invention is directed to energy efficient soda lime silicate glass compositions using borax pentahydrate. The invented glasses have the compositions in the ranges: B
2 O
3 = 7.19-51.74 wt.%, SiO
2 = 22.68-74.62 wt.%, Na
2 O = 13.0-23.5 wt.%, CaO = 0.0-10.5 wt.%, K
2 O = 0.03-0.3 wt.%, Al
2 O
3 = 0.15-1.3 wt.%, MgO = 0.43-4.0 wt.%, and Fe
2 O
3 +TiO
2 = 0.05-0.12 wt.%. The evaluated properties of the glasses have revealed that these invented glasses are suitable for manufa turing improved quality container glasses, float glasses and glasses for ophthalmic lens blanks as well. The addition of borax pentahydrate originated B
2 O
3 at its optimum level (28.5 - 30.3 wt.% B
2 O
3 ) is found to reduce the glass melting temperature by 150-200°C. This lowering of glass melting temperature substantially saves energy and reduces the production cost; hence the compositions are energy efficient and cost effectives. It eliminates the use of soda ash and limestone, so it reduces the carbon dioxide (CO
2 ) emission and thereby global warming; thus these compositions are environmentally friendly as well.
2 O
3 = 7.19-51.74 wt.%, SiO
2 = 22.68-74.62 wt.%, Na
2 O = 13.0-23.5 wt.%, CaO = 0.0-10.5 wt.%, K
2 O = 0.03-0.3 wt.%, Al
2 O
3 = 0.15-1.3 wt.%, MgO = 0.43-4.0 wt.%, and Fe
2 O
3 +TiO
2 = 0.05-0.12 wt.%. The evaluated properties of the glasses have revealed that these invented glasses are suitable for manufa turing improved quality container glasses, float glasses and glasses for ophthalmic lens blanks as well. The addition of borax pentahydrate originated B
2 O
3 at its optimum level (28.5 - 30.3 wt.% B
2 O
3 ) is found to reduce the glass melting temperature by 150-200°C. This lowering of glass melting temperature substantially saves energy and reduces the production cost; hence the compositions are energy efficient and cost effectives. It eliminates the use of soda ash and limestone, so it reduces the carbon dioxide (CO
2 ) emission and thereby global warming; thus these compositions are environmentally friendly as well.
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