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AssigneeChurch & Dwight Co., Inc.
InventorsAnthony J. Falotico, Steven A. Bolkan, Louis R. Mazzola
Estimating the term…
A laundry detergent composition, wherein the solids content comprises an active surfactant, at least about 70 wt. % of a water soluble alkaline carbonate, e.g., sodium carbonate, and, a minor amount, for example, about 0.05 to 5 wt. % of a polymeric polycarboxylate, e.g., an acrylic acid polymer, based on the total weight of solids in the composition, the polymeric polycarboxylate being in a form such that its complete release into wash water is delayed to at least about 60 seconds after the complete dissolution of the alkaline carbonate. For example, the polymeric polycarboxylate may be present in slow dissolving granules which also contain a diluent salt such as sodium carbonate and a binder such as a low molecular weight polyethylene glycol. The delayed release of the polymeric polycarboxylate reduces fabric encrustation during washing, i.e., the precipitation of CaCO.sub.3 onto fabric surfaces due to the presence of soluble alkaline carbonate.
A laundry detergent composition wherein the solids content comprises an active surfactant, at least about 70 wt. % of a builder consisting of a water-soluble alkaline carbonate, and about 0.05 to 5 wt. % of a polymeric polycarboxylate, based on the total weight of solids in the composition, said composition containing delayed release agglomerated granules consisting essentially of said polymeric polycarboxylate and optionally a diluent salt and binder, and having a particle size distribution within the range of about 8 to 30 U.S. mesh size such that the compete release of said polymeric polycarboxylate into wash water under normal washing conditions is delayed to at least about 60 seconds after the complete dissolution of said alkaline carbonate builder.
Dependencies are inferred from the claim text.