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Method for producing high silicate glass and high silicate glass

外国特許コード F110005467
整理番号 K05320WO
掲載日 2011年9月6日
出願国 アメリカ合衆国
出願番号 54960904
公報番号 20060201200
公報番号 7975508
出願日 平成16年3月19日(2004.3.19)
公報発行日 平成18年9月14日(2006.9.14)
公報発行日 平成23年7月12日(2011.7.12)
国際出願番号 JP2004003810
国際公開番号 WO2004083145
国際出願日 平成16年3月19日(2004.3.19)
国際公開日 平成16年9月30日(2004.9.30)
優先権データ
  • 特願2003-078846 (2003.3.20) JP
  • 2004WO-JP03810 (2004.3.19) WO
発明の名称 (英語) Method for producing high silicate glass and high silicate glass
発明の概要(英語) (US7975508)
The present invention provides: a method for producing high silicate glass which has a low Fe concentration and can achieve a high UV transmittance while retaining advantages of Vycor glass that mass-production at low cost is feasible and that complex formation with various photofunctional ions can be effected; and high silicate glass of a high UV transmittance.
For obtaining the above high silicate glass, the method is characterized by comprising the steps of: heating borosilicate glass including a heavy metal or rare-earth element (preferably a high-valence heavy metal or rare-earth element) so as to phase-separate the borosilicate glass; subjecting the phase-separated borosilicate glass to acid treatment so as to elute a metal; and sintering the acid-treated borosilicate glass.
特許請求の範囲(英語) [claim1]
1. A method for producing high silicate glass, the method comprising: a phase-separating step of subjecting to heat treatment borosilicate glass containing any one element of manganese, cerium, chromium, cobalt, and copper, so as to phase-separate the borosilicate glass;
an acid-treatment step of subjecting the phase-separated borosilicate glass to acid treatment so as to elute a metal; and
a sintering step of sintering the acid-treated borosilicate glass,
wherein the borosilicate glass includes 0.1 wt % to 2.0 wt % of an oxide of the one element of manganese, cerium, chromium, cobalt, and copper,
wherein, when the borosilicate glass contains cerium or chromium, the borosilicate glass is subjected repeatedly to another heat treatment and another acid treatment between the acid-treatment step and the sintering step, and
wherein a last acid treatment of the another acid treatment performed repeatedly is an acid treatment by using acid containing ethylenediamine tetraacetic acid.
[claim2]
2. The method according to claim 1, wherein the borosilicate glass is produced by carrying out first and second melting steps of melting a raw material by heating the raw material.
[claim3]
3. The method according to claim 2, wherein boric acid to be contained in the borosilicate glass is added in the second melting step.
  • 発明者/出願人(英語)
  • AKAI TOMOKO
  • CHEN DANPING
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 65/30.1
  • 65/21.1
  • 65/21.4
  • 65/23
  • 65/31
  • 65/33.1
参考情報 (研究プロジェクト等) PRESTO Conversion and Control by Advanced Chemistry AREA
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