Enhanced catalyst stability in activated peroxygen and/or alkaline detergent formulations

Patent metadata

Field	Value
Publication number	US-9624119-B2
Application number	US-201414303700-A
Country	US
Kind code	B2
Filing date	Jun 13, 2014
Priority date	Jun 13, 2014
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

Stabilized catalyst detergent compositions are provided in solid formulations of detergents including an active oxygen source and/or a highly alkaline detergent composition. The compositions are suitable for use with additional detergent and/or bleaching compositions while providing stabilized catalysts within a polymeric matrix. Methods or process for manufacturing the compositions, and methods of use for cleaning are disclosed.

First claim

What is claimed is:

1. A solid stabilized catalyst detergent composition comprising:
at least one alkalinity source;
a stabilized catalyst consisting essentially of a polymeric matrix of a polymer and a catalyst according to the following formula: [(L p Mn q ) n X r ]Y s , wherein the polymer is a water-soluble carboxylate comprising an acrylic acid/maleic acid copolymer, an acrylic acid polymer, polyvinylpyrrolidone polymer, or combinations thereof,
wherein each L independently is an organic ligand containing at least three nitrogen atoms and/or at least two carboxyl groups that coordinate with the Mn metal;
wherein each X independently is a coordinating or bridging group selected from the group consisting of H 2 O, OH − , SH − , HO 2 − , O 2− , O 2 2− , S 2− , F − , Cl − , Br − , I − , NO 3 − , NO 2 − , SO 4 2− , SO 3 2− , PO 4 3− , N 3 − , CN − , NR 3 , NCS − , RCN, RS − , RCO 2 − , RO − , and

wherein R is a hydrogen or a C 1 to C 6 alkyl group;
wherein p is an integer from 1 to 4;
wherein q is an integer from 1 to 2;
wherein r is an integer from 0 to 6;
wherein Y is a counter ion; and
wherein s is the number of counter ions,
wherein said solid stabilized catalyst detergent composition is a solid block composition, and
wherein the weight ratio of the polymer to the catalyst is from 20:1 to about 99.9:0.1 in the polymeric matrix.

2. The detergent composition according to claim 1 , wherein the polymer is a water-soluble carboxylate having a molecular weight between about 1,000 to 10,000.

3. The detergent composition according to claim 1 , wherein the catalyst is a complex according to the following formula:

wherein M is Mn; wherein L 1 and L 2 are separate ligands or wherein L 1 and L 2 can combine to be a single molecule.

4. The detergent composition according to claim 1 , wherein the alkalinity source is selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, alkali metal silicates, alkali metal metasilicates, alkali metal bicarbonates, alkali metal sesquicarbonates, and combinations thereof.

5. The detergent composition according to claim 4 , wherein the composition has a use pH of at least about 8.5.

6. The detergent composition according to claim 4 , wherein the composition has a use pH of at least about 12.

7. The detergent composition according to claim 1 , further comprising an active oxygen source that is catalyzed by the catalyst in a use solution of the composition.

8. The detergent composition according to claim 7 , wherein the active oxygen source is selected from the group consisting of peroxygen compounds, peroxygen compound adducts, hydrogen peroxide, hydrogen peroxide liberating or generating compounds, inorganic or organic peroxyacids, peroxycarboxylic acids, percarbonates and combinations thereof.

9. The detergent composition according to claim 8 , wherein the active oxygen source is sodium percarbonate.

10. The detergent composition according to claim 1 , comprising from about 10-90 wt-% of the alkalinity source, from about 0.1-15 wt-% of the stabilized catalyst, from about 2-75 wt-% of an active oxygen source, from about 1-25 wt-% of at least one surfactant, and from about 1-30 wt-% of at least one additional functional ingredient.

11. A method of making a solid block stabilized catalyst detergent composition comprising:
providing a polymer in a solvent, wherein the polymer is a water-soluble carboxylate comprising an acrylic acid/maleic acid copolymer, an acrylic acid polymer, polyvinylpyrrolidone polymer, or combinations thereof;
providing a catalyst in a solvent, wherein the catalyst has the following formula: [(L p Mn q ) n X r ]Y s , wherein each L independently is an organic ligand containing at least three nitrogen atoms and/or at least two carboxyl groups that coordinate with the Mn metal; wherein each X independently is a coordinating or bridging group selected from the group consisting of H 2 O, OH − , SH − , HO 2 − , O 2− , O 2 2 , S 2− , F − , Cl − , Br, I − , NO 3 − , NO 2 − , SO 4 2− , SO 3 2− , PO 4 3− , N 3 − , CN − , NR 3 , NCS − , RCN, RS − , RCO 2 − , RO − , and

 wherein R is a hydrogen or a C 1 to C 6 alkyl group; wherein p is an integer from 1 to 4; wherein q is an integer from 1 to 2; wherein r is an integer from 0 to 6; wherein Y is a counter ion; and wherein s is the number of counter ions;
combining the polymer and catalyst to form a solution;
drying the solution of the polymer and catalyst to form a stabilized catalyst polymeric matrix;
solidifying the stabilized catalyst polymeric matrix with at least one alkalinity source to form a hydrate solid block detergent composition,
wherein the weight ratio of the polymer to the catalyst is from 20:1 to about 99.9:0.1 in the polymeric matrix.

12. The method according to claim 11 , wherein the solvent is water, and further comprising solidifying the catalyst with at an active oxygen source, a surfactant(s) and/or at least one additional functional ingredient.

13. The method according to claim 12 , wherein the hydrate solid detergent composition comprises from about 10-80 wt-% of the alkalinity source, from about 0.1-15 wt-% of the stabilized catalyst polymeric matrix, from about 10-75 wt-% of the active oxygen source, from about 1-25 wt-% of the surfactant, and from about 1-30 wt-% of the at least one additional functional ingredient.

14. A method of cleaning and/or bleaching comprising: providing the solid stabilized catalyst detergent composition of claim 1 ;
generating a use solution of the detergent composition; and
contacting a surface or object in need of cleaning and/or bleaching with the use solution of the detergent composition.

15. The method according to claim 14 , wherein the use solution of the detergent composition is employed in a warewashing and/or laundry application.

16. The method according to claim 14 , wherein the use solution of the detergent composition is employed in a pulp and/or paper bleaching, wastewater treatment and/or epoxidation reaction application.

17. The method according to claim 14 , wherein the solid stabilized catalyst detergent composition maintains stability of the catalyst while formulated into the alkaline detergent composition.

18. The method according to claim 14 , wherein the solid stabilized catalyst detergent composition is a caustic and/or carbonate detergent and optionally includes an active oxygen source to provide bleaching benefits with the stabilized catalyst.

Assignees

• Ecolab Usa Inc

Inventors

• Dotzauer David
• Mohs Thomas R
• Hill Erin

Classifications

• D21H17/74

  of organic and inorganic material · CPC title

• C02F2305/04

  Surfactants, used as part of a formulation or alone · CPC title

• B01J2231/70

  Oxidation reactions, e.g. epoxidation, (di)hydroxylation, dehydrogenation and analogues · CPC title

• C02F2303/02

  Odour removal or prevention of malodour · CPC title

• D21C9/1078

  with Mn-containing compounds · CPC title