Patent ID: 8021585
Filing Date: 2011-09-20
Classification: C08J,C08K

Abstract:
1. A method for preparing a liquid concentrate of polymer additives to add to a solvent or slurry process to minimize undesired residual solids level, consisting of the steps of: (i) providing a dry blend of polymer additives and densifying the blend by the application of thermomechanical energy; (ii) forcing the blend through a die to produce pellets, wherein the pellets are at least ⅛ inch in diameter and at least 5/16 inch in length; and (iii) dispersing the pellets in a liquid solvent to produce said liquid additive concentrate showing ≦5.0% retention through a 100 mesh screen, wherein said polymer additives consist of, (i) at least one of an organic phosphite, and a phenol, and (ii) at least one of zinc oxide, hydrotalcite, a benzophenone, a benzotriazole, talc, calcium carbonate, aluminosilicate, an amide, and an amine.