Abstract: A process for making improved synthetic surfactant flakes from a water-wet paste which is dried on a heated roll drum dryer. Hot surfactant flakes are made from drum drying a water-wet paste containing sodium alkyl sulfate (AS), sodium alkyl benzene sulfonate (LAS), and water-soluble inorganic salts, preferably sodium chloride and magnesium chloride blends. The hot flakes are cooled in a low moisture environment having a dewpoint of up to 10.degree. C., e.g., under a dry nitrogen or dry air blanket. The low moisture environment prevents undesirable, insidious hydration and stabilizes the AS/LAS flakes. The stable AS/LAS surfactant flakes can be used to make more economical, more processable, firmer improved surfactant cakes. One advantage is that cakes made with the flakes of this invention can contain larger amounts of perfume than cakes made with comparable AS/LAS flakes cooled above said dewpoint.

Abstract: Composition to inhibit the staining of water-contacting surfaces, such as those in a toilet bowl, which is caused by manganese present in household water in the presence of an oxidizing material. Manganese staining is inhibited by supplying to the water 0.1 to 10 ppm of a substance selected from sodium polyacrylates and ethylene-maleic anhydride copolymers.

Abstract: Solid cake compositions comprising three essential components: polyethylene oxide resin, a nonsolvent resin coating liquid, preferably a perfume, and a surfactant. The components are mixed to form an extrudable mass and the mass is extruded into a log. The log is then cut or sliced into individual cakes. The compositions have reduced gelling characteristics, which reduce the tendency of the resin to form a gel when the cake is contacted with water. The cakes are useful in dispensers which are employed in the flush tank of a toilet to automatically dispense chemicals to the flush water. The polyethylene oxide resin dispensed into the wastewater minimizes aerosolization of the wastewater which occurs when the toilet is flushed.

Abstract: Method and composition to inhibit the staining of water-contacting surfaces, such as those in a toilet bowl, which is caused by manganese present in household water in the presence of an oxidizing material. Manganese staining is inhibited by supplying to the water 0.1 to 10 ppm of a substance selected from sodium polyacrylates and ethylenemaleic anhydride copolymers. Compositions are also described in the context of an automatic toilet tank dispenser which provides sufficient quantities of the above materials in solution to inhibit manganese staining of toilet bowl surfaces.

Abstract: A passive dosing dispenser for issuing, for example, a volume of a toilet tank additive solution into a toilet tank as the water is draining therefrom while the toilet is flushing.

Abstract: Method and composition to inhibit the staining of water-contacting surfaces, such as those in a toilet bowl, which is caused by manganese present in household water in the presence of an oxidizing material. Manganese staining is inhibited by supplying to the water 0.1 to 10 ppm of a partially hydrolyzed polyacrylamide material. Compositions are also described in the context of an automatic toilet tank dispenser which provides sufficient quantities of the above materials in solution to inhibit manganese staining of toilet bowl surfaces.