Patent ID: 8962503
Filing Date: 2015-02-24
Classification: C03C

Abstract:
1. A colored glass plate made of alkali-containing silica glass comprising elements of iron, tin and sulfur, wherein the percentage of the total sulfur calculated as SO 3 is 0.025-0.065% as represented by mass percentage based on oxides, the percentage of divalent iron calculated as Fe 2 O 3 in the total iron calculated as Fe 2 O 3 is from 60 to 80% as represented by mass percentage, the content of Na 2 O is at least 0.5% as represented by mass percentage based on oxides, and the percentage of divalent tin calculated as SnO 2 in the total tin calculated as SnO 2 is at least 0.1% as represented by mol percentage, and wherein said colored glass plate is produced by a float process.