Blooming type germicidal hard surface cleaners comprising biphenyl-based solvents

• US 6,184,195 B1
• Filed: 10/23/1998
• Issued: 02/06/2001
• Est. Priority Date: 11/28/1997
• Status: Expired due to Term

• Current Assignee: Reckitt Benckiser LLC (Reckitt Benckiser Group PLC)
• Original Assignee: Reckitt Benckiser Incorporated (Reckitt Benckiser Group PLC)
• Inventors: Rypkema, Ralph Edward, Cheung, Tak Wai, Smialowicz, Dennis Thomas, Mehta, Minaxi Hemansu
• Primary Examiner(s): Gupta, Yogendra
• Assistant Examiner(s): BOYER, CHARLES I
• Application Number:
  US09/178,137
• Time in Patent Office: 837 Days
• Field of Search: 510/382, 510/384, 510/391, 510/463, 510/504, 510/432, 510/356, 510/405, 510/245, 510/342
• US Class Current: 510/432
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/02 containing liquids as carriers, diluents or solvents
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 27/00 Biocides, pest repellants or attractants, or plant growth regulators containing hydrocarbons
• CPC Class Codes: A01N 33/12 Quaternary ammonium compounds
• CPC Class Codes: A01N 65/00 Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof containing compounds of determined constitution A01N27/00 - A01N59/00
• CPC Class Codes: A01N 65/06 Coniferophyta [gymnosperms], e.g. cypress
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 1/835 Mixtures of non-ionic with cationic compounds
• CPC Class Codes: C11D 3/187 aromatic
• CPC Class Codes: C11D 3/188 Terpenes
• CPC Class Codes: C11D 3/2037 Terpenes
• CPC Class Codes: C11D 3/2062 Terpene
• CPC Class Codes: C11D 3/43 Solvents
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

Abstract

An aqueous concentrated liquid disinfectant composition which blooms when added to a larger volume of water which comprises the following constituents:

a terpene based solvent;

germicidal cationic surfactant, preferably a quaternary ammonium compound having germicidal properties;

organic solvent constituent;

a binary co-solvent system comprising alkyl diphenyl solvent and a co-solvent;

one or more nonionic surfactants;

optionally but desirably at least one optional constituent selected from: chelating agents, coloring agent, light stabilizers, fragrances, thickening agents, hydrotropes, pH adjusting agents, pH buffers one or more detersive surfactant constituents particularly non-ionic and amphoteric surfactants, as well as others known the art and useful in similar compositions; and, the balance being water.

The liquid disinfectant compositions feature good blooming characteristics, particularly good long term blooming retention.

Process for the use of the compositions are also disclosed.

Claims

1. An aqueous concentrated liquid disinfectant composition which blooms when added to a larger volume of water which comprises the following constituents:

a terpene based solvent;

as a germicidal cationic surfactant, a quaternary ammonium compound having germicidal properties;

a further organic solvent constituent;

a binary co-solvent system comprising alkyl biphenyl solvent and a co-solvent which aids in the solubilization of the alkyl biphenyl solvent in water;

one or more nonionic surfactants;

optionally at least one optional constituent selected from;

chelating agents, coloring agent, light stabilizers, fragrances, thickening agents, hydrotropes, pH adjusting agents, pH buffers one or more detersive surfactant constituents; and

,

the balance being water.

2. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the terpene based solvent constituent is solely a d-limonene constituent.

3. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the terpene based solvent constituent is solely a pine oil constituent.

4. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the quaternary ammonium compound having germicidal properties is represented by the formula:

wherein

R₂ and R₃ are the same or different C₈-C₁₂alkyl groups, or R₂ is C_12-16alkyl, C_8-18alkylethoxy, C_8-18alkylphenolethoxy when R₃ is benzyl, and X is a halide.

5. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the alkyl biphenyl solvent is represented according to the structure:

wherein;

R₁ is hydrogen or is a lower alkyl radical,

R₂ is a C₁-C₁₀ which may be straight chained or branched alkyl radical,

m is an integer from 1-3 inclusive; and

,

n is an integer from 1-3 inclusive.

6. The aqueous concentrated liquid disinfectant composition according to claim 5 wherein:

R₁ is hydrogen,

m is 1,

n is an integer from 1-3 inclusive, and,

R₂ is a C₁-C₆ straight chained or branched alkyl radical.

7. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the terpene based solvent constituent is present with respect to the alkyl biphenyl solvent in a respective weight ratio of from 8:

1 to 1;

2, with the total amount of these combined constituents not exceeding 9% by weight of the total weight of the concentrate compositions.

8. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the alkyl biphenyl solvent is present in a respective weight ratio of d-limonene constituent:

alkyl biphenyl solvent of from 4;

3.5 to 5;

2.

9. The aqueous concentrated liquid disinfectant composition according to claim 1 wherein the alkyl biphenyl solvent is present in a respective weight ratio of pine oil constituent:

alkyl biphenyl solvent of from 8;

1 to 3;

6.

10. A process for disinfecting a hard surface where the presence of gram positive or gram negative bacteria is suspected which comprises the process step of:

contacting the hard surface with a disinfecting effective amount of the aqueous concentrated liquid disinfectant composition according to claim 1.

11. The aqueous concentrated liquid disinfectant composition according to claim 5 wherein the alkyl biphenyl solvent is represented by the structure:

wherein;

R₁ is hydrogen or a C₁-C₆ straight chained or branched alkyl radical,

R₂ is a C₁-C₆ straight chained or branched alkyl radical,

m is an integer from 1-3 inclusive; and

,

n is an integer from 1-3 inclusive.

12. The aqueous concentrated liquid disinfectant composition according to claim 5 which further comprises one or more additional detersive surfactant constituents selected from non-ionic and amphoteric detersive surfactants.