Patent ID: 8388806

Claim:
A method of inhibiting the deposition of organic contaminants in pulp or papermaking systems comprising adding to the pulp or papermaking system an effective deposition inhibiting amount of a hydrophobically modified poly[ethylene glycol] composition comprising the formula: (R 1 —) x —O—[—CH 2 —CH 2 —O—] n —(—R 2 ) y —Z wherein R 1 and R 2 are a hydrophobic moiety, or blocks of hydrophobic moieties of x and y repeat units, covalently bonded to poly[ethylene glycol]; n is 10 to 700; x is 1 to 4; y is 0 to 4; Z is only present when y=0 and is hydrogen; the sum of x and y is greater than or equal to 2 and not greater than 5.5, and wherein said hydrophobically modified poly[ethylene glycol] composition is derived from the reaction of a polyethylene glycol and a hydrophobic reagent, the reagent selected from the group consisting of a ketene dimer, a glycidyl ether and alkenyl succinic anhydride; and wherein the viscosity of a 5 wt % concentration of the hydrophobically modified poly[ethylene glycol] composition is from about 1 cP to about 10,000 cP.