Patent ID: 8642687

Claim:
A process for producing an aqueous suspension of a carboxylated, completely or partially hydrogenated nitrile rubber, characterized in that 1) a carboxylated, completely or partially hydrogenated nitrile rubber is first dissolved in an organic solvent to form an organic phase, 2) the organic phase is then brought into contact with an aqueous phase, the pH of which is greater than or equal to 6, where the water dissolves completely or partially in the organic solvent, the carboxylated, completely or partially hydrogenated nitrile rubber precipitates, and a suspension therefore forms, and 3) the organic solvent is completely or partially removed, wherein the organic solvent is selected from the group consisting of acetone, methyl ethyl ketone, formic acid, acetic acid, tetrahydrofuran, dioxane, or a mixture thereof.