Stable solid block detergent composition
First Claim
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1. A method of manufacturing a solid block detergent composition, which method comprises:
- (i) combining;
(a) about 20 to 80 wt % of an alkali metal carbonate;
(b) an effective amount of an organic phosphonate hardness sequestering agent; and
(c) about 0.01 to less than 1.3 mole of water per mole of carbonate to form a blended mass; and
(ii) forming the blended mass into a solid comprising non-hydrated alkali metal carbonate and a binding agent comprising a hydrated alkali metal carbonate and organic phosphonate for solidification;
wherein the solid block is substantially free of a second source of alkalinity.
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Abstract
The dimensionally stable alkaline solid block warewashing detergent uses an E-form binder forming a solid comprising a sodium carbonate source of alkalinity, a sequestrant, a surfactant package and other optional material. The solid block is dimensionally stable and highly effective in removing soil from the surfaces of dishware in the institutional and industrial environment. The E-form hydrate comprises an organic phosphonate and a hydrated carbonate.
109 Citations
37 Claims
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1. A method of manufacturing a solid block detergent composition, which method comprises:
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(i) combining;
(a) about 20 to 80 wt % of an alkali metal carbonate;
(b) an effective amount of an organic phosphonate hardness sequestering agent; and
(c) about 0.01 to less than 1.3 mole of water per mole of carbonate to form a blended mass; and
(ii) forming the blended mass into a solid comprising non-hydrated alkali metal carbonate and a binding agent comprising a hydrated alkali metal carbonate and organic phosphonate for solidification;
wherein the solid block is substantially free of a second source of alkalinity. - View Dependent Claims (2, 3, 4, 7, 8, 9)
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5-6. -6. (canceled)
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10-16. -16. (canceled)
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17. A solid block warewashing detergent composition comprising:
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(a) about 20 to 65 wt % of Na2CO3; and
(b) an effective sequestering amount of an organic phosphonate hardness sequestering agent;
wherein the block comprises non-hydrated sodium carbonate and a binding agent comprising hydrated sodium carbonate and organic phosphonate, and wherein the block is substantially free of a second source of alkalinity. - View Dependent Claims (18, 19, 29, 30)
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20-26. -26. (canceled)
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31. A solid detergent comprising a product format selected from the group consisting of a pellet, a solid block, and an extruded solid block, the detergent consisting essentially of:
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(a) about 20 to 80 wt % of a Na2CO3; and
(b) an effective amount of a sequestrant comprising an organic phosphonate and a condensed phosphate wherein the detergent is substantially free of a second source of alkalinity and the block comprises about 0.9 to 1.3 moles of water per each mole of carbonate and a binding agent comprising an organic phosphonate and sodium carbonate monohydrate. - View Dependent Claims (32, 33, 34, 35, 36)
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37-38. -38. (canceled)
Specification