CATONIC EMULSION OF ALKYLALKOXYSILANES

摘要

The present invention teaches masonry water repellents comprising aqueous emulsions of alkylalkoxysilanes with either a quaternary ammonium surfactant or a mixture of a quaternary ammonium surfactant with an amino and/or a nonionic surfactant. The alkylalkoxysilane is present at a level of about one to sixt y weight percent of the final solution weight. The surfactants are present at levels of about 0.05 to 25 weight percent of the final solution weight. The useful quaternary ammoni um surfactants are alkyltrimethyl or dialkyldimethyl ammonium compounds or quarternary ammonium modified dimethylpolysiloxanes. Amino acid nonionic surfactants are used as additives to the quaternary surfactants. The types of nonionic surfactant s contemplated herein are alkylamines and alkyl acetylenic alcohols.