Solid controlled release carbonate detergent compositions

Patent metadata

Field	Value
Publication number	US-11427792-B2
Application number	US-202016949294-A
Country	US
Kind code	B2
Filing date	Oct 23, 2020
Priority date	Apr 27, 2017
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

Solid detergent compositions for dishwashing or warewashing compositions and applications of use are disclosed. In particular, solid carbonate-based compositions that do not require a traditional dispenser for controlled rate of release over multiple cycles are disclosed. Compositions, methods of employ and cleaning using the same are disclosed.

First claim

What is claimed is:

1. A two-phase solid composition for cleaning wares comprising:
a first homogenous controlled release solid phase comprising a carbonate alkalinity source, at least one polysaccharide material comprising carboxymethylcellulose (CMC), and an active ingredient cleaning agent; and
a second homogenous solid phase comprising the carbonate alkalinity source and an active ingredient cleaning agent,
wherein the polysaccharide material comprises between about 1 wt-% and about 20 wt-% of the first solid phase,
wherein the polysaccharide material has an about 1 wt-% to about 2 wt-% aqueous solution viscosity (25 dC) between about 1 cps and about 5000 cps, and
wherein the solid composition is a multi-use composition and is not encapsulated with delayed release chemistry.

2. The composition of claim 1 , wherein the carbonate alkalinity source is an alkali metal carbonate.

3. The composition of claim 1 , wherein the polysaccharide material comprises between about 1 wt-% and about 15 wt-% of the first solid phase and has a solution viscosity between about 1 wt-% to about 2 wt-% aqueous solution viscosity (25 dC) between about 1 and about 3500 cps, and/or wherein the polysaccharide material has a degree of substitution (DS) between zero and about 3, and/or wherein the polysaccharide material has a degree of polymerization between about 200 and about 15,000.

4. The composition of claim 1 , wherein the polysaccharide material further comprises one or more of hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropyl methylcelluslose (HPMC), methylcellulose (MC), cellulose acetate, cellulose triacetate, and xanthan.

5. The composition of claim 4 , wherein the polysaccharide material is sodium carboxymethylcellulose.

6. The composition of claim 4 , wherein the polysaccharide material further comprises xanthan.

7. The composition of claim 4 , wherein the polysaccharide material comprises carboxymethylcellulose (CMC) and xanthan in a ratio of carboxymethylcellulose (CMC) to xanthan is from about 1:1 to about 30:1.

8. The composition of claim 1 , wherein the active ingredient cleaning agent is a nonionic surfactant.

9. The composition of claim 1 , wherein the two-phase solid composition is a capsule, tablet, coated tablet, puck, brick, or block.

10. The composition of claim 1 , wherein the two-phase solid composition is a tablet or block.

11. The composition of claim 1 , wherein the carbonate alkalinity source comprises between about 40% and about 95% by weight of the first solid phase, the polysaccharide material comprises between about 1% and about 15% by weight of the first solid phase, and the active ingredient cleaning agent comprises between about 0.1% and about 40% by weight of the first solid phase.

12. The composition of claim 1 , wherein the first solid phase further comprises about 0.1 wt-% to about 50 wt-% of an additional functional ingredient comprising one or more of defoaming agents, anti-redeposition agents, anti-scale agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, stabilizing agents, corrosion inhibitors, additional sequestrants and/or chelating agents, threshold inhibitors, crystal modifiers, fragrances and/or dyes, hydrotropes or couplers, buffers, and solvents.

13. The composition of claim 1 , wherein the second solid phase further comprises an additional functional ingredient comprising one or more of defoaming agents, anti-redeposition agents, anti-scale agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, stabilizing agents, corrosion inhibitors, additional sequestrants and/or chelating agents, threshold inhibitors, crystal modifiers, fragrances and/or dyes, hydrotropes or couplers, buffers, and solvents.

14. The composition of claim 1 , wherein the ratio of the first solid phase to the second solid phase on weight basis is from about 10:1 to about 1:10.

15. A method of dispensing a two-phase solid composition comprising:
contacting the solid composition according to claim 1 with a water source to generate a use solution of the composition; and
contacting wares with the use solution at pH from about 7 to about 13 for a sufficient amount of time to remove and/or solubilize soils.

16. A system for cleaning wares in an automatic dishwashing environment comprising:
a two-phase solid composition comprising a first homogenous controlled release solid phase and a second homogenous solid phase;
wherein the first solid phase comprises a carbonate alkalinity source, at least one polysaccharide material comprising carboxymethylcellulose (CMC), and a surfactant,
wherein the second solid phase comprises the carbonate alkalinity source and an active ingredient cleaning agent,
wherein the polysaccharide material has an about 1 wt-% to about 2 wt-% aqueous solution viscosity (25 dC) between about 1 cps and about 5000 cps, and
wherein the two-phase solid composition is a 2-in-1 composition providing a detergent and rinse aid in a single solid composition, wherein the solid is a multi-use composition, wherein the solid is not encapsulated with delayed release chemistry; and
wherein the system does not include a dispensing system.

17. The system of claim 16 , wherein the two-phase solid composition is a pressed solid.

18. The system of claim 16 , wherein the two-phase solid composition is a capsule, tablet, coated tablet, puck, brick, or block.

19. The system of claim 16 , wherein the two-phase solid composition is a pressed solid tablet or block.

20. The system of claim 16 , wherein the automatic dishwashing environment is a consumer or commercial dish washing machine.

Assignees

• Ecolab Usa Inc

Inventors

• Gelderman Max
• Mansergh John
• Skulan John
• Roerdink Lander Monique

Classifications

• C11D3/222 Primary

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title

• C11D7/12

  Carbonates {bicarbonates} · CPC title

• C11D17/0039

  Coated compositions or coated components in the compositions, (micro)capsules · CPC title

• C11D17/0065

  Solid detergents containing builders (C11D17/06 takes precedence) · CPC title

• C11D17/0047 Primary

  Detergents in the form of bars or tablets · CPC title