Ion exchangeable glass article for three-dimensional forming
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United States of America Patent
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May 22, 2018
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app pub date -
Feb 24, 2015
filing date -
Feb 27, 2014
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Abstract
An alkali aluminosilicate glass that can be chemically strengthened and formed into a three dimensional shape. The glass has a softening point of less than about 825° C. and a high temperature coefficient of thermal expansion of less than about 30 parts per million (ppm)/° C. The glass may be ion exchanged after the three dimensional shape is formed. When ion exchanged, the glass has a surface layer that is under a compressive stress of at least about 700 MPa.
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