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公开(公告)号：US20190225537A1
公开(公告)日：2019-07-25
申请号：US16251963
申请日：2019-01-18
Applicant: AGC INC.
Inventor： Izuru KASHIMA , Kaname Sekiya , Akio Shizukai , Yositeru Ikeda , Shogo Sueda
Abstract: The present invention relates to a method for producing a chemically strengthened glass, the method including, performing a chemical strengthening treatment including the following steps (1) to (3) to a glass having a specific composition, (1) a step of bringing the glass into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange; (2) a step of bringing the glass having been ion-exchanged in step (1) into contact with an inorganic salt composition including 50 mass % or more of sodium nitrate to perform ion exchange; and (3) a step of bringing the glass having been ion-exchanged in step (2) into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange.
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公开(公告)号：US11198642B2
公开(公告)日：2021-12-14
申请号：US16251963
申请日：2019-01-18
Applicant: AGC INC.
Inventor： Izuru Kashima , Kaname Sekiya , Akio Shizukai , Yositeru Ikeda , Shogo Sueda
Abstract: The present invention relates to a method for producing a chemically strengthened glass, the method including, performing a chemical strengthening treatment including the following steps (1) to (3) to a glass having a specific composition, (1) a step of bringing the glass into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange; (2) a step of bringing the glass having been ion-exchanged in step (1) into contact with an inorganic salt composition including 50 mass % or more of sodium nitrate to perform ion exchange; and (3) a step of bringing the glass having been ion-exchanged in step (2) into contact with an inorganic salt composition including 70 mass % or more of potassium nitrate to perform ion exchange.
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