Title:
LEAD-FREE GLASS HAVING LOW MELTING POINT
Document Type and Number:
WIPO Patent Application WO/2005/118500
Kind Code:
A1
Abstract:
A lead-free SiO2-B2O3-ZnO-R2O-CuO based glass having a low melting point (a first glass), which has transparency and insulating property, and comprises, in wt %, 7 to 20 % of SiO2, 32 to 50 % of B2O3, 25 to 42 % of ZnO, 7 to 20 % of R2O (Li2O + Na2O + K2O), 0.1 to 2 % of CuO, and 0 to 10 % of RO (MgO + CaO + SrO + BaO); and a lead-free SiO2-B2O3-ZnO-R2O-CuO based glass having a low melting point (a second glass), which has transparency and insulating property, and comprises, in wt %, 11 to 20 % of SiO2, 45 to 65 % of B2O3, 10 to 20 % of ZnO, 10 to 18 % of R2O (Li2O + Na2O + K2O), and 0.1 to 2 % of CuO.
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Inventors:
SHIMOOKA TAISHIN
HAYAKAWA NAOYA
HAYAKAWA NAOYA
Application Number:
PCT/JP2005/009356
Publication Date:
December 15, 2005
Filing Date:
May 23, 2005
Export Citation:
Assignee:
CENTRAL GLASS CO LTD (JP)
SHIMOOKA TAISHIN
HAYAKAWA NAOYA
SHIMOOKA TAISHIN
HAYAKAWA NAOYA
International Classes:
C03C3/066; C03C8/04; G09F9/30; H01J5/04; H01J11/02; (IPC1-7): C03C8/04; G09F9/30; H01J11/02
Foreign References:
| JP2000313635A | 2000-11-14 | |||
| JPH09278482A | 1997-10-28 | |||
| JP2002087843A | 2002-03-27 | |||
| JP2001146436A | 2001-05-29 |
Attorney, Agent or Firm:
Hashimoto, Takeshi c/o Shiga, Patent Office (Ekisaikai Bldg. 1-29, Akashi-ch, Chuo-ku Tokyo 44, JP)
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