Title:
TEMPERED GLASS, AND TEMPERED GLASS PLATE
Document Type and Number:
WIPO Patent Application WO/2012/099053
Kind Code:
A1
Abstract:
This tempered glass has a compressive stress layer on the surface and is characterized by containing, as the glass composition and in mol %, 45 to 75% of SiO2, 3 to 15% of Al2O3, 0 to 12% of Li2O, 0.3 to 20% of Na2O, 0 to 10% of K2O, and 1 to 15% of MgO+CaO. Moreover, the tempered glass is characterized in that the mol ratio of (Al2O3+Na2O+P2O5)/SiO2 is 0.1 to 1, the mol ratio of (B2O3+Na2O)/SiO2 is 0.1 to 1, the mol ratio of P2O5/SiO2 is 0 to 1, the mol ratio of Al2O3/SiO2 is 0.01 to 1, and the mol ratio of Na2O/Al2O3 is 0.1 to 5. Additionally, the tempered glass is characterized in that a portion of the surface of the tempered glass or the entire surface of the tempered glass is etched before being tempered.
Inventors:
MURATA Takashi (7-1, Seiran 2-chome, Otsu-sh, Shiga 39, 〒5208639, JP)
村田 隆 (〒39 滋賀県大津市晴嵐２丁目７番１号 日本電気硝子株式会社内 Shiga, 〒5208639, JP)
村田 隆 (〒39 滋賀県大津市晴嵐２丁目７番１号 日本電気硝子株式会社内 Shiga, 〒5208639, JP)
Application Number:
JP2012/050707
Publication Date:
July 26, 2012
Filing Date:
January 16, 2012
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO., LTD. (7-1 Seiran 2-chome, Otsu-shi Shiga, 39, 〒5208639, JP)
日本電気硝子株式会社 (〒39 滋賀県大津市晴嵐２丁目７番１号 Shiga, 〒5208639, JP)
MURATA Takashi (7-1, Seiran 2-chome, Otsu-sh, Shiga 39, 〒5208639, JP)
日本電気硝子株式会社 (〒39 滋賀県大津市晴嵐２丁目７番１号 Shiga, 〒5208639, JP)
MURATA Takashi (7-1, Seiran 2-chome, Otsu-sh, Shiga 39, 〒5208639, JP)
International Classes:
C03C3/085; C03C3/087; C03C3/091; C03C3/093; C03C3/097; C03C21/00
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
Claims: