Patent ID: 9675905
Date: 2017-06-13
CPC Classifications: B01D,D21H

Claim:
1. A defoamer composition comprising: a) at least one organophosphorous component, wherein said organophosphorous component is n-tributyl phosphate, n-tributoxyethyl phosphate, tris(2-ethylhexyl)phosphate, triisooctyl phosphite, tri-isobutyl phosphate, tri-phenyl phosphate, or any combination thereof, wherein said organophosphorous component is present in an amount of from about 20 wt % to about 99 wt %, based on the total weight of said defoamer composition; b) at least one silane treated silica, wherein said silane treated silica is present in an amount of from about 1 wt % to about 10 wt %, based on the total weight of said defoamer composition; c) at least one surfactant that is anionic or non-ionic, wherein said surfactant is a polyglycol ester, a sugar ester, a block copolymer ester of polyoxypropylene and polyoxyethylene, an alcohol ethoxylate, a polyalkylene glycol ester, a sorbitan ester, an amine ethoxylate, an ester ethoxylate, an alkylolamide ethoxylate, a lanolin ethoxylate, or an alkylphenol ethoxylate, a sulphosuccinate, an ether sulphate, an alcohol sulphate, an alkylaryl sulphonate, an alkane/olefin sulphonate, or a petroleum sulphonate, or any combination thereof, wherein said surfactant is present in an amount of from about 0.5 wt % to about 10 wt %, based on the total weight of said defoamer composition; and d) optionally, water.