Use of a hydrolytic condensation product of an organo-functional silane as a coating material on lead crystal glass to reduce the lead

摘要

A process for reducing the elution of lead from lead crystal glass comprises applying and hardening a coating material contg. a hydrolytic condensation prod. of a crosslinkable organo-functional silane, a metal cpd. and an organic prepolymer which is crosslinkable with this condensate.