Green glasses for containers, capable of intercepting...

Details Green glasses for containers, capable of intercepting... Green glasses for containers, capable of intercepting...

C - Chemistry, Metallurgy

03

C

261/16

C03C 3/04 (2006.01) C03C 3/078 (2006.01) C03C 4/02 (2006.01) C03C 4/08 (2006.01)

Patent

CA 1275659

TITLE OF THE INVENTION Green glasses for containers, capable of inter- cepting ultraviolet rays and near ultraviolet visible rays, and processes for the production of the same ABSTRACT OF THE DISCLOSURE A green glass for a container, for example, beer bottle capable of protecting beer from sunflavor is provided which glass comprises 0.3 to 1.5 % by weight of chromium oxide in terms of Cr2O3 and at most 0.06 % by weight of Fe2O3 in a glass composition of SiO2-Na2O-CaO type and having C.I.E. colorimetric values for 10 mm thickness: a bright- ness (Y) of 1 to 25 %, a dominant wavelength (.lambda.d) of 556 to 564 nm and an excitation purity (Pe) of at least 90 %, which is capable of intercepting substantially a light of 340 to 460 nm in a thickness of 4 mm. YG-22

545272

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