Browse Prior Art Database

Indicator for Residual Binder in Boric Oxide Containing Glasses,

IP.com Disclosure Number: IPCOM000081707D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Anschel, M: AUTHOR [+3]

Abstract

In the manufacturing of glass panels, boric oxide containing seal glasses are used. During panel fabrication, the boric oxide glass is made into a slurry with an organic binder such as nitrocelluloseamyl acetate and ethyl CELLOSOLVE* acetate. The slurry is fired at 480 degrees C, sealing the soda-lime plate glass system.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Indicator for Residual Binder in Boric Oxide Containing Glasses,

In the manufacturing of glass panels, boric oxide containing seal glasses are used. During panel fabrication, the boric oxide glass is made into a slurry with an organic binder such as nitrocelluloseamyl acetate and ethyl CELLOSOLVE* acetate. The slurry is fired at 480 degrees C, sealing the soda-lime plate glass system.

It was found that a good seal was not always obtained because residual organic binder may remain. This residual matter prevents sealing because of its dewetting action.

It has been discovered that the presence of residual organic matter can be detected, by placing the sealed glass panels into a chamber containing bromine gas. The panels are allowed to remain in the chamber at ambient conditions for 2 to 5 days. When the panels are removed, a black spot will appear in the area of any residual organic matter. * Trademark of Union Carbide Corporation.

1