Title:
LEAD-FREE GLASS COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2008/007570
Kind Code:
A1
Abstract:
The object is to reduce the amount of bismuth used and improve the light transmission rate in a lead-free glass composition having a softening point as low as 600˚C or lower. Disclosed is a lead-free glass composition having the following composition in terms of oxides (by mass): 5-30% of SiO2; 30-60% of B2O3; 1-25% of Al2O3; 5-20% of at least one member selected from Li2O, Na2O and K2O in total; 0.1-15% of at least one member selected from MgO and CaO in total; and 0.1-20% of at least one member selected from SrO and BaO in total, wherein the total amount of MgO, CaO, SrO and BaO is 0.2-25% by mass and the amount of ZnO is 0-15% by mass.
More Like This:
| JP4105562 | Glass composition for plant cultivation |
| JPS623039 | MATERIAL FOR INSULATION LAYER |
| JPS56155040 | ENAMEL FRIT |
Inventors:
KUMANO SATOSHI (JP)
UCHIYAMA ICHIRO (JP)
UCHIYAMA ICHIRO (JP)
Application Number:
PCT/JP2007/063159
Publication Date:
January 17, 2008
Filing Date:
June 29, 2007
Export Citation:
Assignee:
NIHON YAMAMURA GLASS CO LTD (JP)
KUMANO SATOSHI (JP)
UCHIYAMA ICHIRO (JP)
KUMANO SATOSHI (JP)
UCHIYAMA ICHIRO (JP)
International Classes:
C03C3/066; C03C3/064; C03C8/16; H01J11/12; H01J11/22; H01J11/24; H01J11/26; H01J11/34; H01J11/36; H01J11/38; H01J11/42
Foreign References:
| JPH1192168A | 1999-04-06 | |||
| JP2000313635A | 2000-11-14 | |||
| JP2003192376A | 2003-07-09 | |||
| JP2006151763A | 2006-06-15 | |||
| JP2001080934A | 2001-03-27 |
Attorney, Agent or Firm:
FUJIMOTO, Noboru (15-14 Minamisemba 1-chome, Chuo-ku, Osaka-sh, Osaka 81, JP)
Download PDF: