Patent ID: 6379746
Filing Date: 2002-04-30
Classification: C03C

Abstract:
A method for treating glass having at least one substantially flat surface comprising:(a) forming a hydrophobic coating on the surface by applying an aqueous solution comprising at least one surfactant to the surface as part of the manufacturing process for the glass, wherein: (1) the manufacturing process produces newly formed glass at an elevated temperature; (2) the newly formed glass is at a temperature above 175Â° C. when it first comes into contact with the aqueous solution; (3) the surfactant is selected from the group consisting of cationic surfactants, non-ionic surfactants, and betaines; and (4) the coating reduces adhesion of glass chips to the surface; (b) cutting the glass; (c) grinding and/or polishing at least one edge of the cut glass; and (d) removing the coating from the surface; wherein: (i) water or a water-containing solution is applied to the coated surface during at least one of steps (b) and (c); and (ii) the coating has a sessile drop contact angle of at least 40Â° after steps (b) and (c).