Patent ID: 8362117
Filing Date: 2013-01-29
Classification: C04B,C08K,Y02W

Abstract:
1. A method for stabilizing polycarboxylates comprising: elevating a temperature of a polycarboxylate polymer and an associated inorganic powder, mixing the polycarboxylate polymer with at least one antioxidant before, during and/or after the elevating, wherein the at least one antioxidant is selected from the group consisting of: substituted phenols, sterically inhibited phenols, hydroquinones, sterically inhibited aromatic amines, diarylamines, arylamine-ketone condensation products, organosulfur compounds, dialkyldithiocarbamic acids, dialkyldithiophosphites, organophosphorus compounds, phosphites, phosphonites, tocopherols, organophosphorus compound derivatives, gallic acid, gallic acid derivatives, vanillin, salts, and any mixtures thereof.