Process for increasing resistance of glass products to cement and cementitious mixtures thereof
 A process is disclosed to increase the resistance of glass products to alkaline cement liquors by coating the surface of the glass products with an effective amount of a water-soluble zinc compound. Cement compositions comprising a cementitious matrix and glass products produced in accordance with the process of this invention are also disclosed herein. 
Jenaer Glaswerk Schott & Gen.
C
C03C
inventional
Helmut
Meyer