Solid controlled release caustic detergent compositions

Patent metadata

Field	Value
Publication number	US-10889783-B2
Application number	US-201815964658-A
Country	US
Kind code	B2
Filing date	Apr 27, 2018
Priority date	Nov 14, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

Solid detergent compositions for dishwashing or warewashing compositions and applications of use are disclosed. In particular, solid caustic-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 solid controlled release composition for cleaning wares comprising:
from about 25 wt-% to about 95 wt-% of a hydroxide alkalinity source;
from about 1 wt-% to about 20 wt-% of a polysaccharide material comprising carboxymethylcellulose (CMC), wherein the polysaccharide material has between about a 1 wt-% to about 2 wt-% aqueous solution viscosity at 25° C. of between about 250 cps and about 5000 cps; and
an active ingredient cleaning agent,
wherein the solid is a homogenous multi-use composition lasting at least 12 cycles; and
wherein the solid has a mass of at least 50 grams and is not encapsulated with any delayed release composition.

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

3. The composition of claim 1 , wherein the polysaccharide material comprises from about 1 wt-% to about 15 wt-% of the composition and has a degree of substitution (DS) between about 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 carboxymethylcellulose is sodium carboxymethylcellulose.

5. The composition of claim 1 , wherein the polysaccharide material further comprises xanthan.

6. The composition of claim 5 , wherein the polysaccharide material comprises the carboxymethylcellulose (CMC) and the xanthan in a ratio of carboxymethylcellulose (CMC) to xanthan from about 1:1 to about 30:1.

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

8. The composition of claim 1 , wherein the solid controlled release composition is formulated into a capsule, tablet, coated tablet, puck, brick or block.

9. The composition of claim 1 , wherein the solid controlled release composition is a tablet or block.

10. The composition of claim 1 , wherein the hydroxide alkalinity source comprises between about 40 wt-% and about 95 wt-% of the solid composition, the polysaccharide material comprises between about 1 wt-% and about 15 wt-% of the solid composition, and the active ingredient cleaning agent comprises between about 0.1 wt-% and about 40 wt-% of the solid composition.

11. The composition of claim 10 , further comprising from about 0.1 wt-% to about 50 wt-% of an additional functional ingredient, wherein the additional functional ingredient is one or more of defoaming agents, anti-redeposition agents, anti-scale agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, stabilizing agents, corrosion inhibitors, sequestrants and/or chelating agents, threshold inhibitors, crystal modifiers, fragrances and/or dyes, hydrotropes or couplers, buffers, and solvents, and optionally wherein the composition is phosphate-free.

12. A method of dispensing a solid controlled release 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 10.5 to about 13 for a sufficient amount of time to remove and/or solubilize soils.

Assignees

• Ecolab Usa Inc

Inventors

• Gelderman Max
• Mansergh John
• Roerdink Lander Monique
• Peltier Caitlyn

Classifications

• C11D17/0065

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

• C11D7/268

  Carbohydrates or derivatives thereof · CPC title

• C11D7/06

  Hydroxides · CPC title

• C11D3/222

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

• C11D1/66

  Non-ionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)} · CPC title