The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 1996
Filed:
Jun. 30, 1994
Anthony J Falotico, Doylestown, PA (US);
Steven A Bolkan, Hopewell, NJ (US);
Louis R Mazzola, Mahwah, NJ (US);
Church & Dwight Co., Inc., Princeton, NJ (US);
Abstract
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.