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US 4,971,714 AGranted
Detersive system with an improved hardness ion complexing agent
AssigneeEcolab Inc.
InventorsKeith D. Lokkesmoe, Richard B. Greenwald, Daniel J. Donovan
Life of this patent
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Abstract
An improved softening agent dispersed in an aqueous detergent comprising droplets having an exterior organic phase containing a complexing agent and an inner aqueous phase comprising an acid or salt. The ability of the softening agent to remove hardness ions is improved by a novel complexing agent.
Claims33
A detersive system, that can remove divalent or trivalent ions from service water and can clean soiled surfaces or articles, comprising:
- (a) an effective detersive amount of a soil removing detergent;
- (b) an effective amount of a hardness sequestering agent, dispersed in the detergent, which hardness sequestering agent comprises:
- (1) about 25 to 95 vol.-% of an exterior organic phase having:
- (i) an organic medium;
- and
- (ii) about 0.1 to 99 wt-% based on the organic phase of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR4## wherein each R is independently a C.sub.10-36 aliphatic group;
- (2) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic medium which comprises:
- (i) water;
- and
- (ii) about 0.5 to 99 wt-% based on the aqueous phase of an acid or strongly ionized salt;
- and
- (3) about 0.1 to 50 wt-% based on the organic phase of a surfactant that can stabilize the dispersed aqueous phase within the exterior organic phase.
10 more elements
A warewashing detersive system, capable of removing soil from flatware, dishware or other hard surfaces and capable of removing divalent or trivalent ions from service water, comprising:
- (a) about 0.1 to 95 wt-% of a source of an inorganic alkaline detergent;
- (b) about 2 to 60 wt-% of a hardness sequestering agent dispersed in the detersive system, which hardness sequestering agent comprises:
- (1) about 25 to 95 vol.-% of an exterior organic phase comprising a major proportion of an organic medium and about 0.5 to 50 wt-% of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR5## wherein each R is independently a C.sub.10-36 alkyl group;
- (2) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic medium which comprises water and about 0.5 to 99 wt-% of an acid or strongly ionized salt;
- and
- (3) about 0.1 to 50 wt-%, based on the organic phase, of a surfactant to stabilize the dispersed inner aqueous phase within the exterior organic phase;
- and
- (c) about 0.1 to 25 wt-% of a source of active halogen.
6 more elements
An agent for removing hardness from an aqueous phase comprising:
- (a) about 5 to 95 vol.-% of an exterior organic phase having:
- (i) an organic medium;
- and
- (ii) about 25 to 99 wt-% based on the organic phase of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR6## wherein R is independently a C.sub.10-36 aliphatic group;
- (b) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic phase which comprises:
- (i) water;
- and
- (ii) about 0.5 to 99 wt-% based on the aqueous phase of an acid or strongly ionized salt;
- and
- (c) about 0.1 to 50 wt-% based on the organic phase of a surfactant that can stabilize the dispersed aqueous phase within the exterior organic phase.
8 more elements
A detersive system, that can remove divalent or trivalent ions from service water and can clean soiled surfaces or articles, comprising:
- (a) an effective detersive amount of a soil removing detergent;
- (b) an effective amount of a hardness sequestering agent, dispersed in the detergent, which hardness sequestering agent comprises:
- (1) about 25 to 95 vol.-% of an exterior organic phase having:
- (i) an organic medium;
- and
- (ii) about 0.1 to 99 wt-% based on the organic phase of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR7## wherein each R is independently a branched C.sub.10-36 aliphatic group;
- (2) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic medium which comprises:
- (i) water;
- and
- (ii) about 0.5 to 99 wt-% based on the aqueous phase of an acid or strongly ionized salt;
- and
- (3) about 0.1 to 50 wt-% based on the organic phase of a surfactant that can stabilize the dispersed aqueous phase within the exterior organic phase.
10 more elements
A warehousing detersive system, capable of removing soil from flatware, dishware or other hard surfaces and capable of removing divalent or trivalent ions from service water, comprising:
- (a) about 0.1 to 95 wt-% of a source of an inorganic alkaline detergent;
- (b) about 2 to 60 wt-% of a softening agent dispersed in the detersive system, which hardness sequestering agent comprises:
- (1) about 25 to 95 vol.-% of an exterior organic phase comprising a major proportion of an organic medium and about 0.5 to 50 wt-% of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR8## wherein each R is independently a branched C.sub.10-36 alkyl group;
- (2) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic medium which comprises water and about 0.5 to 99 wt-% of an acid or strongly ionized salt;
- and
- (3) about 0.1 to 50 wt-%, based on the organic phase, of a surfactant to stabilize the dispersed inner aqueous phase within the exterior organic phase;
- and
- (c) about 0.1 to 25 wt-% of a source of active halogen.
6 more elements
An agent for removing hardness from an aqueous phase comprising:
- (a) about 5 to 95 vol.-% of an exterior organic phase having:
- (i) an organic medium;
- and
- (ii) about 25 to 99 wt-% based on the organic phase of an organic soluble hardness ion complexing agent comprising a molecule according to the formula:
- ##STR9## wherein each R is independently a branched C.sub.20-36 aliphatic group;
- (b) about 5 to 75 vol.-% of an inner aqueous phase dispersed within the exterior organic phase which comprises:
- (i) water;
- and
- (ii) about 0.5 to 99 wt-% based on the aqueous phase of an acid or strongly ionized salt;
- and
- (c) about 0.1 to 50 wt-% based on the organic phase of a surfactant that can stabilize the dispersed aqueous phase within the exterior organic phase.
8 more elements
Dependencies are inferred from the claim text.