Water repellent composition for porous substrates.

摘要

A water repellent composition for porous substrates formed by combining an alkylalkoxysilane with a carrier selected from the group consisting of alcohols, mineral spirits and glycol ethers, together with an effective amount of a surface depositing agent for producing on the surface of the porous substrate a water beading-water shedding surface coating and a metal salt catalyst. The method of producing on a porous substrate a water beading-water shedding surface coating by applying to the porous substrate the foregoing composition is also disclosed.