Invista North America S.a.r.l.

Invista Textiles Limited

Martin August Rudat

Isaac Keene Iverson

Methods of making a composition are disclosed, which comprises: i) forming a dispersion of particles comprising: a) silica, b) a non-volatile cation, and c) water, wherein the non-volatile cation is not ammonium; ii) adding at least one organosilyl coupling agent of formula R&#x2014;(R&#x2014;O)&#x2014;Si where Ris selected from the group consisting of a substituted alkyl and unsubstituted alkyl, and Ris selected from the group consisting of methyl, ethyl, propyl and butyl, wherein the substituted alkyl of Ris not aminoalkyl; iii) reacting the organosilyl coupling agent with the dispersion of particles to form a mixture comprising a silsesquioxane and an alcohol; and iv) removing the alcohol from the mixture by vacuum distillation, wherein final concentration of the alcohol is about 1% by weight or less of the total mixture. Further disclosed are compositions comprising an aqueous dispersion comprising silsesquioxane, a non-volatile cation and an alcohol, and methods of using the composition.

Aqueous silsesquioxane dispersions having low concentrations of reaction byproducts

A soil repellency aqueous dispersion for treating various fibers, yarns, and textiles is disclosed. The dispersion provides superior soil resistance when compared to known fluorochemical and silicone fiber treatments. The dispersion comprises clay nanoparticle components and fluorochemicals that can be applied to the fibers, yarns, and textiles using known methods.

Growing community of inventors

Woodstock, GA, United States of America

Martin August Rudat