Compositions containing organic compounds

• US 5,728,667 A
• Filed: 03/19/1997
• Issued: 03/17/1998
• Est. Priority Date: 10/25/1995
• Status: Expired due to Term

• Current Assignee: Reckitt Benckiser LLC (Reckitt Benckiser Group PLC)
• Original Assignee: Reckitt & Colman Inc. (Reckitt Benckiser Group PLC)
• Inventors: Richter, Alan F.
• Primary Examiner(s): McGinty, Douglas J.
• Assistant Examiner(s): Hardee, John R.
• Application Number:
  US08/820,096
• Time in Patent Office: 363 Days
• Field of Search: 510/235, 510/237, 510/219, 510/319, 510/530, 510/422, 510/433, 510/490, 510/504, 510/503
• US Class Current: 510/235
• CPC Class Codes: C11D 1/06 Ether- or thioether carboxylic acids
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 1/66 Non-ionic compounds C11D1/002, C11D1/004, C11D1/008 take precedence
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 1/86 Mixtures of anionic, cationic, and non-ionic compounds
• CPC Class Codes: C11D 3/0094 High foaming compositions
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

Abstract

Germicidal light-duty dishwashing detergent composition in either a gel, liquid, or semi-liquid form, which consists essentially of:

0.5-2.75 parts quaternary ammonium germicidal compound

0.5-40 parts by weight of an anionic alkyl ether carboxylate surfactant of formula:

R--O--(C.sub.2 H.sub.4 O).sub.x --CH.sub.2 --COO.sup.- M.sup.+

where x is 4 to 11, R is a C_9-18 alkyl, M is counterion;

10-40 parts by weight of an nonionic surfactant;

0.01-30 parts by weight of an of a suds boosting agent; water;

0-40 parts by weight of one or more additives, wherein the ratio of the quarternary ammonium germicidal agent to the anionic alkyl ether carboxylate surfactant is 1:1-4, and, the compositions exhibit a pH in the range of 5-10.

The compositions are excellent dishwashing detergents particularly suited for manual dishwashing operations, and further provide good cleaning with an effective sanitizing effect.

Claims

1. Germicidal light-duty dishwashing detergent composition in either a gel, or liquid, which consists essentially of:

A) 0.5-2.75 parts by weight of quaternary ammonium germicidal compound,

B) 0.5-40 parts by weight of an anionic surfactant portion, wherein said portion consists of an anionic alkyl ether carboxylate surfactant of formula;

space="preserve" listing-type="equation">R--O--(C.sub.2 H.sub.4 O).sub.x --CH.sub.2 --COO.sup.- M.sup.+

where x is 4 to 11, R is a C_9-18 alkyl, M is counterion;

C) 10-40 parts by weight of an nonionic surfactant,

D) 0.01-30 parts by weight of a suds stabilizing or suds boosting agent;

E) water;

F) 0-40 parts by weight of one or more additives, wherein the ratio of the quaternary ammonium germicidal agent to the anionic alkyl ether carboxylate surfactant is 1;

1-4, and, the compositions exhibit a pH in the range of 5-10.

2. The composition according to claim 1 wherein the weight ratio of the quarternary ammonium germicidal compound to the anionic alkyl ether carboxylate surfactant is 1:

1.5-3.5.

3. The composition according to claim 1 wherein the quarternary ammonium germicidal compound is compound according to the formula:

##STR7## wherein;

at least one R₁, R₂, R₃ and R₄ is an aliphatic, aryl aliphatic or aliphatic aryl radical of from 6 to 26 carbon atoms, and the entire cation portion of the molecule has a molecular weight of at least 165.

4. The composition according to claim 3 wherein at least one R₁, R₂, R₃ and R₄ is a hydrophobic radical selected from long-chain alkyl, long-chain alkoxy aryl, long-chain alkyl aryl, halogen-substitued long-chain alkyl aryl, long-chain alkyl phenoxy alkyl, or aryl alkyl radicals, and, remaining R₁, R₂, R₃ and R₄ radicals on the nitrogen are substituents of a hydrocarbon structure containing a total of no more than 12 carbon atoms which may optionally include one or more amide or ether linkages.

5. The composition according to claim 1 wherein the quarternary ammonium germicidal compound is a compound according to the formula:

##STR8## wherein;

R₂ and R₃ are the same or different C₈ -C₁₂ alkyl groups, or, R₂ is an C_12-16 alkyl, C_8-18 alkylethoxy, or C_8-18 alkylphenolethoxy group and R₃ is benzyl; and

,

X is a salt forming anionic radical.

6. The composition according to claim 1 the anionic alkyl ether carboxylate surfactant is an anionic alkyl ether carboxylate according to the structural formula:

space="preserve" listing-type="equation">R--O--(C.sub.2 H.sub.4 O).sub.x --CH.sub.2 --COO.sup.- M.sup.+

wherein;

n is 2;

m is 4-11;

R is C₉ -C₁₆, and,

M is the cation of an alkali metal.

7. The composition according to claim 1 wherein the nonionic surfactant is at least one of a condensation product of an organic aliphatic or alkyl aromatic hydrophobic compound having a carboxy, hydroxy, amido, or amino group with a free hydrogen attached to a nitrogen atom with hydrophilic group containing ethylene oxide and/or polyethylene glycol.

8. The composition according to claim 1 wherein the suds stabilizing or suds boosting agent is selected from:

betaines, ethylene oxide condensates, fatty acid amides, and amine oxide semi-polar nonionic surfactants.

9. The composition according to claim 1 wherein the additives are one or more additives selected from:

detersive enhancing additives, viscosity modifying agents, foam stabilizing agents, sequestering agents, neutralizing agents, coloring agents, pH modifying agents, pH buffers, fragrances, fillers, optical brighteners, solubilizing agents, and compatibilizing agents.

10. The composition according to claim 1 wherein the compositions exhibit a pH in the range of 6-8.

11. The composition according to claim 1 wherein the compositions exhibit a pH of about 7.

12. An aqueous cleaning composition comprising in parts by weight:

one part of the composition according to claim 1 per 100 to 10,000 parts of water.

13. An aqueous cleaning composition according to claim 12 wherein the quarternary ammonium germicidal compound is present in at least 50 parts per million.

14. An aqueous cleaning composition comprising in parts by weight:

one part of the composition according to claim 1 per about 256 parts water, wherein the aqueous cleaning composition exhibits at least a "2" log reduction against Staphylococcus aureus and Salmonella choleraesuis by a quantitative suspension test.

15. An aqueous cleaning composition according to claim 14 wherein the aqueous cleaning composition exhibits at least a "3" log reduction against Staphylococcus aureus and Salmonella choleraesuis by a quantitative suspension test.

16. A process for washing of soiled dishes or cooking utensils to provide both disinfecting and cleaning benefits thereto, which comprises the step of:

washing said soiled dishes or cooking utensils in an aqueous composition which comprises the composition according to claim 1.

17. The composition according to claim 1 which consists essentially of:

A) 0.5-2.75 parts by weight of quaternary ammonium germicidal compound according to the formula;

##STR9## wherein;

at least one R₁, R₂, R₃ and R₄ is an aliphatic, aryl aliphatic or aliphatic aryl radical of from 6 to 26 carbon atoms, and the entire cation portion of the molecule has a molecular weight of at least 165;

B) 0.5-40 parts by weight of an anionic alkyl ether carboxylate surfactant of formula;

space="preserve" listing-type="equation">R--O--(C.sub.2 H.sub.4 O).sub.x --CH.sub.2 --COO.sup.- M.sup.+

where x is 4 to 11, R is a C_9-18 alkyl, M is counterion;

C) 10-40 parts by weight of an nonionic surfactant;

D) 0.01-30 parts by weight of a suds stabilizing or suds boosting agent;

E) water;

F) 0-40 parts by weight of one or more additives, wherein the ratio of the quaternary ammonium germicidal agent to the anionic alkyl ether carboxylate surfactant is 1;

1-4, and, the compositions exhibit a pH in the range of 5-10.

18. The composition according to claim 1 wherein the quaternary ammonium germicidal compound is present in an amount of from 0.5-2.5 parts by weight.

19. The composition according to claim 1 wherein the quaternary ammonium germicidal compound is present in an amount of from 1-2.5 parts by weight.