Antibacterial light duty liquid detergent

Details Antibacterial light duty liquid detergent Antibacterial light duty liquid detergent

2003-03-05

2003-09-09

Ogden, Necholus (Department: 1751)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

For cleaning a specific substrate or removing a specific...

C510S235000, C510S424000, C510S426000, C510S433000, C510S470000, C510S490000, C510S499000, C510S508000

Reexamination Certificate

active

06617296

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to novel antibacterial light duty liquid cleaning compositions with high foaming and good grease cutting properties.
BACKGROUND OF THE INVENTION
The prior art is replete with light duty liquid detergent compositions containing nonionic surfactants in combination with anionic and/or betaine surfactants wherein the nonionic detergent is not the major active surfactant. In U.S. Pat. No. 3,658,985 an anionic based shampoo contains a minor amount of a fatty acid alkanolamide. U.S. Pat. No. 3,769,398 discloses a betaine-based shampoo containing minor amounts of nonionic surfactants. This patent states that the low foaming properties of nonionic detergents renders its use in shampoo compositions non-preferred. U.S. Pat. No. 4,329,335 also discloses a shampoo containing a betaine surfactant as the major ingredient and minor amounts of a nonionic surfactant and of a fatty acid mono- or di-ethanolamide. U.S. Pat. No. 4,259,204 discloses a shampoo comprising 0.8 to 20% by weight of an anionic phosphoric acid ester and one additional surfactant which may be either anionic, amphoteric, or nonionic. U.S. Pat. No. 4,329,334 discloses an anionic-amphoteric based shampoo containing a major amount of anionic surfactant and lesser amounts of a betaine and nonionic surfactants.
U.S. Pat. No. 3,935,129 discloses a liquid cleaning composition containing an alkali metal silicate, urea, glycerin, triethanolamine, an anionic detergent and a nonionic detergent. The silicate content determines the amount of anionic and/or nonionic detergent in the liquid cleaning composition. However, the foaming properties of these detergent compositions are not discussed therein.
U.S. Pat. No. 4,129,515 discloses a heavy duty liquid detergent for laundering fabrics comprising a mixture of substantially equal amounts of anionic and nonionic surfactants, alkanolamines and magnesium salts, and, optionally, zwitterionic surfactants as suds modifiers.
U.S. Pat. No. 4,224,195 discloses an aqueous detergent composition for laundering socks or stockings comprising a specific group of nonionic detergents, namely, an ethylene oxide of a secondary alcohol, a specific group of anionic detergents, namely, a sulfuric ester salt of an ethylene oxide adduct of a secondary alcohol, and an amphoteric surfactant which may be a betaine, wherein either the anionic or nonionic surfactant may be the major ingredient.
The prior art also discloses detergent compositions containing all nonionic surfactants as shown in U.S. Pat. Nos. 4,154,706 and 4,329,336 wherein the shampoo compositions contain a plurality of particular nonionic surfactants in order to affect desirable foaming and detersive properties despite the fact that nonionic surfactants are usually deficient in such properties.
U.S. Pat. No. 4,013,787 discloses a piperazine based polymer in conditioning and shampoo compositions which may contain all nonionic surfactant or all anionic surfactant.
U.S. Pat. No. 4,450,091 discloses high viscosity shampoo compositions containing a blend of an amphoteric betaine surfactant, a polyoxybutylenepolyoxyethylene nonionic detergent, an anionic surfactant, a fatty acid alkanolamide and a polyoxyalkylene glycol fatty ester. But, none of the exemplified compositions contain an active ingredient mixture wherein the nonionic detergent is present in major proportion which is probably due to the low foaming properties of the polyoxybutylene polyoxyethylene nonionic detergent.
U.S. Pat. No. 4,595,526 describes a composition comprising a nonionic surfactant, a betaine surfactant, an anionic surfactant and a C
12
-C
14
fatty acid monoethanolamide foam stabilizer.
SUMMARY OF THE INVENTION
It has now been found that a high foaming antibacterial light duty liquid cleaning composition can be formulated with at least two surfactants, lauryol ethylene diaminetriacetate, a magnesium inorganic salt, a zinc inorganic salt, an alkali metal inorganic salt, a proton donating agent, and water.
To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein the novel, high foaming, light duty liquid detergent of this invention comprises at least two surfactants, lauryol ethylene diamine triacetate, a magnesium inorganic salt, a zinc inorganic salt, an alkali metal inorganic salt, a proton donating agent, and water, wherein the composition does not contain an alpha olefin sulfonate surfactant, an alkali metal salt of ethylene diamine tetraacetic acid or hydroxy ethylene diamine tetra acetic acid, a glycol ether solvent, a mono- or di-saccharides a polyoxyalkylene glycol fatty acid, a builder, a polymeric thickener, a clay, abrasive, silicas, tricloscan, alkaline earth metal carbonates, alkyl glycine surfactant or cyclic imidinium surfactant.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to an antibacterial light duty liquid cleaning composition which comprises approximately by weight:
(a) 5% to 55%, more preferably 10% to 45% of at least two surfactants selected from the group consisting of paraffin sulfonate, linear alkyl benzene sulfonates, alkyl sulfate, ethoxylated alkyl ether sulfate, alkyl polyglucoside, amine oxide, ethoxylated nonionics, ethoxylated/propoxylated nonionics, C
12
-C
14
alkyl monoalkanol amides and zwitterionic surfactants and mixtures thereof;
(b) 0.5% to 10% more preferably 0.75% to 8% of lauryol ethylene diamine triacetate;
(c) 0.25% to 10% of a solubilizing agent;
(d) 0.25% to 5% of a magnesium inorganic salt;
(e) 0.25% to 5% of an alkali metal inorganic salt;
(f) 0.01% to 2% of a proton donating agent;
(g) 0.25% to 2% of a zinc inorganic salt; and
(h) the balance being water wherein the composition does not contain a glycol ether solvent, an alpha olefin sulfonate surfactant, sodium citrate, a polyoxyalkylene glycol fatty acid, a mono- or di-saccharides, a builder, a polymeric thickener, a clay, a sodium salt of ethylene diamine tetraacetic acid or hydroxyethylene diamine tetra acetic acid abrasive, silicas, triclosan, alkaline earth metal carbonates, alkyl glycine surfactant or cyclic imidinium surfactant.
The C
10
-C
20
paraffin sulfonates can be used at a concentration of 4 wt. % to 16 wt. %, more preferably 6 wt. % to 14 wt. % in the instant compositions may be monosulfonates or di-sulfonates and usually are mixtures thereof, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C
12-18
carbon atoms chains, and more preferably they are of C
14-17
chains. Paraffin sulfonates that have the sulfonate group(s) distributed along the paraffin chain are described in U.S. Pat. Nos. 2,503,280; 2,507,088; 3,260,744 and 3,372,188 and also in German Patent 735,096. Such compounds may be made to specifications and desirably the content of paraffin sulfonates outside the C
14-17
range will be minor and will be minimized, as will be any contents of di- or poly-sulfonates.
The alkyl polysaccharides surfactants, which are used in conjunction with the aforementioned surfactant have a hydrophobic group containing from about 8 to about 20 carbon atoms, preferably from about 10 to about 16 carbon atoms, most preferably from about 12 to about 14 carbon atoms, and polysaccharide hydrophilic group containing from about 1.5 to about 10, preferably from about 1.5 to about 4, most preferably from about 1.6 to about 2.7 saccharide units (e.g., galactoside, glucoside, fructoside, glucosyl, fructosyl; and/or galactosyl units). Mixtures of saccharide moieties may be used in the alkyl polysaccharide surfactants. The number x indicates the number of saccharide units in a particular alkyl polysaccharide surfactant. For a particular alkyl polysaccharide molecule x can only assume integral values. In any physical sample of alkyl polysaccharide surfactants there will be in general molecules having different x values. The physical sample can be characterized by the average value of x and this average value can assume non-integral values. In this specification the values

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