Abstract: We have found that long standing problems relating to the stability of organic materials in alkaline detergents, including the reversion or hydrolysis of condensed phosphate sequestrants in alkaline solid detergent compositions can be alleviated by the use of an organic composition having vicinal hydroxyls. Such a solid block detergent can be manufactured by a process in which a source of alkalinity, a functional material including a condensed phosphate sequestering agent, an organic compound having two vicinal hydroxyl groups, are combined in a pourable composition or liquid. Such a liquid can be introduced into a plastic capsule and solidified. During manufacture and solidification, we have found that the vicinal hydroxyl compound prevents substantial hydrolysis or reversion of the condensed phosphate maintaining effective hardness ion sequestration during the use of the detergent. The stabilizer can also stabilizes color, chlorine content and dispensing properties.

Abstract: The invention provides a urea based solid composition and a process for preparing a homogeneous, urea-based, solid cleaning composition. Cleaning compositions for use in warewashing and cleaning hard surfaces, rinsing, sanitizing, deodorizing, and the like, made by the method are also provided. The ingredients are charged into a heated mixing apparatus and when uniform are transferred into a mold or other packaging system for dispensing the detergent. The consistency of the composition ranges from that of a fused solid block to a malleable article.

Abstract: An active-halogen bleach such as dichloroisocyanurate encapsulated in a coating of dihydratea synthetic detergent such as sodium octyl sulfonate. The capsule may further comprise an initial coating of a soluble inorganic detergent builder or filler such as an alkali metal phosphate or sulfate. The capsule is stable in highly alkaline environments such as detergent compositions.Solid cast detergent-bleach composition having minimal bleach degradation comprising an alkaline hydratable chemical such as sodium hydroxide, a hardness sequestrant such as sodium tripolyphosphate, water of hydration and encapsulated active-halogen bleach formed in accordance with this invention. Optionally the detergent-bleach composition may contain a polyelectrolyte such as polyacrylate.

Abstract: A water-driven jet or venturi extraction means is used to remove, capture and cool the hot, highly humid air created within commercial dishwashers during a wash rinse or sanitization cycle. A cold water spray is used to create a pressure reduction zone which serves to draw in hot, highly humid air from the dishwasher. Water vapor cools and condenses on contact with the cold water spray within the venturi. The invention also serves to help vent the dishwasher. Cool, fresh air is drawn into the dishwasher while the hot air is drawn into the venturi.