Patent ID: 9708755
Date: 2017-07-18
CPC Classifications: D06B,D06M,Y10T

Claim:
1. A coating composition to impart fluid-resistance to textile articles comprising: a blend of a fluorochemical and a particulate additive comprising between about 0.1 to about 10 wt. %, based on total composition weight, of a bimodal size distribution of colloidal silica nanoparticles, wherein the bimodal size distribution of colloidal silica nanoparticles includes (i) a quantity of smaller colloidal silica nanoparticles having a mean particle diameter of between about 1 nm to about 15 nm and (ii) a quantity of larger colloidal silica nanoparticles having a mean particle diameter of between about 40 nm to about 100 nm, and wherein the smaller and larger colloidal silica nanoparticles are present in a ratio of the smaller colloidal silica nanoparticles to the larger colloidal silica nanoparticles of at least 1:2.