Polycarboxylate additives suitable for use in automatic dishwasher detergent compositions are prepared by polymerizing three or more monomers including monoethylenically unsaturated C.sub.3 to C.sub.6 monocarboxylic acids such as acrylic acid, monoethylenically unsaturated C.sub.4 to C.sub.6 dicarboxylic acids such as maleic acid, and monoethylenically unsaturated esters of acrylic or methacrylic acid. Automatic dishwasher detergents prepared from these additives produce low filming and spotting...

A machine dishwashing process for cleaning soiled crockery is provided. The process comprises: (1) optionally prewashing the crockery in a prewash zone; (2) washing the crockery in a wash zone with washing liquor; (3) spraying the crockery from the wash zone with a spraying solution; and (4) rinsing the crockery in a clear washing zone. The washing liquor includes used spraying solution from step (3). The spraying solution has an alkali content of at least 0.8 % by weight. An additive which is s...

A detergent composition comprises from 1% to 80%, by weight, anionic surfactant and from 0.05% to 10%, by weight, divalent ion selected from the group consisting of magnesium ions, calcium ions, and mixtures thereof. The composition is formulated such that the pH of a 1% solution of the composition in water at 20.degree. C. is between 3.5 and 4.5.

The present invention relates to automatic dishwashing composition which can be in the form of a tablet which comprises an alkali metal phosphate detergent builder salt, an alkali carbonate, a dialkali metal disilicate, a nonionic surfactant, an alkali metal matasilicate polymer containing sulfonic acid groups, a chlorine bleach compound, a hydrotrope and a clay.

A glass washing and dishwashing machine including an improved oscillating spray mechanism, an improved tank valve/water diversion mechanism, and an improved water tank assembly, which are all incorporated into the glass washing and dishwashing machine. The oscillating spray mechanism directs a spray of wash water or rinse water at glasses, dishes or the like and oscillates the spray mechanism in order to more completely contact glasses or the like with wash water during a washing and rinsing ope...

An automatic dishwashing composition which is in the form of a multilayer table comprises an alkali metal phosphate detergent builder salt, an alkali metal carbonate, a dialkali metal disilicate, a nonionic surfactant, an alkali metal metasilicate, optionally a polymer containing sulfonic acid groups, a wax coated chlorine bleach compound, and a hydrotrope.

Bleach-free granular detergent compositions for use in automatic dishwashers comprising an alkoxylated nonionic surface-active agent, a sulfonated aromatic compatibilizing agent and a mixture of an alkali sulfite and an alkali sulfate in a specific weight ratio. Preferred nonionic surfactants include ethoxylated nonionics and preferred compatibilizing agents can be selected from xylene-, toluene-, cumene-, benzene-, trimethyl benzene-, ethylbenzene- and ethylmethyl benzenesulfonates. The sulfite...

Liquid dishwashing detergent compositions are prepared that exhibit increased viscosity, better dissolution rate and surprisingly improved cleaning performance in hard water, comprising from about 1% to about 90% of an anionic surfactant and from about 1% to about 30% of a solvent hydrotrope selected from the group consisting of alkoxylated glycerides, alkoxylated glycerines, esters of alkoxylated glycerines, alkoxylated fatty acids, esters of glycerin, polyglycerol esters and combinations there...

An automatic dishwashing composition which is in the form of a tablet generally comprises an alkali metal phosphate detergent builder salt, an alkali metal carbonate, a dialkali metal disilicate, a nonionic surfactant, optional a polymer containing sulfonic acid groups, a wax coated chlorine bleach compound, and a hydrotrope.

An improved dishwashing machine is proposed which has a dish-cleaning compartment, a dish-rack rotating mechanism, a re-circulating fluid spraying system, a non re-circulating fluid spraying system, a drainage mechanism, a waste filter tank and a controlling means. The dish-cleaning compartment includes a cover and a casing, which includes a re-circulating fluid spray arm and a non re-circulating fluid spray arm. Automatic chemical dispenser, hot air dish-drying system and ultraviolet light ster...