Hard surface cleaning and disinfecting compositions comprising e

Details Hard surface cleaning and disinfecting compositions comprising e Hard surface cleaning and disinfecting compositions comprising e

1999-05-13

2000-09-05

Ogden, Necholus

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

With oxygen or halogen containing chemical bleach or oxidant...

510463, 510503, 510506, 510417, C11D 300, C11D 1700, C11D 338

Patent

active

061142980

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to compositions which can be used to disinfect various surfaces including animate surfaces (e.g., human skin, mouth and the like) and inanimate surfaces including, but not limited to, hard surfaces like walls, tiles, floors, glass, bathroom surfaces, kitchen surfaces, dishes as well as fabrics, clothes, carpets and the like.


BACKGROUND OF THE INVENTION

Antimicrobial/antibacterial compositions include materials which have the ability to disinfect. It is generally recognised that a disinfecting material greatly reduces or even eliminates the microorganisms, e.g., bacteria, existing on a surface. For example compositions based on quaternary ammonium compounds have been extensively described in the art for disinfecting purpose.
Although such disinfecting compositions provide acceptable disinfecting properties they do not encounter good acceptance amongst the consumers who are looking for disinfecting compositions based on safer and less harsh chemicals.
It is thus an object of the present invention to provide compositions which are effective disinfectants on various surfaces, and which are safe to the surfaces treated and the environment.
It has now been found that this can be achieved by formulating an essential oil or an active thereof in the form of a microemulsion having droplets dispersed in an aqueous phase, said droplets comprising said essential oil or an active thereof, and said droplets having a particle size of less than 100 nm. Indeed, it has surprisingly been found that improved disinfecting performance is provided with a microemulsion of the present invention, as compared to a similar composition which is not in the form of a microemulsion as defined in the present invention.
Thus, in its broadest embodiment the present invention encompasses the use of a microemulsion comprising a surfactant, an aqueous phase and droplets dispersed in said aqueous phase, said droplets comprising an essential oil or an active thereof, and said droplets having a particle size of less than 100 nanometers, for disinfecting a surface. The present invention also encompasses a microemulsion suitable for disinfecting a surface comprising a surfactant, an aqueous phase comprising a bleach, preferably a peroxygen bleach, and droplets dispersed in said aqueous phase, said droplets comprising an essential oil or an active thereof, and said droplets having a particle size of less than 100 nanometers.
An advantage of the present invention is that effective disinfecting performance is delivered on a broad range of bacterial strains including Gram positive and Gram negative bacterial strains but also more resistant micro-organisms like fungi, even at high dilution levels, e.g., up to dilution levels of from 1:100 (microemulsion:water).
Another advantage of the present invention is that besides the disinfection properties delivered, good cleaning is also provided as the microemulsions herein comprise at least one surfactant and optionally a solvent.
Also the microemulsions according to the present invention are suitable for disinfecting various surfaces including animate surfaces (e.g. human skin and/or mouth) as well as inanimate surfaces. Indeed, this technology is particularly suitable in hard-surfaces applications, laundry applications, e.g., in a so-called "soaking mode", "through the wash mode" and/or "pretreatment mode", as well as in carpet applications and the like.


BACKGROUND ART

WO 96/26262 discloses microemulsion light duty liquid cleaning compositions comprising 1% to 26% by weight of at least one anionic surfactant selected from the group consisting of sulfonate surfactants, alkyl sulfate surfactants and ethoxylated alkyl ether sulfate surfactants and mixtures thereof, 0% to 25% by weight of a zwitterionic surfactant, 0.5% to 29% by weight of a biodegradable compound selected from the group consisting of a mixture of an ethoxylated nonesterified polyhydric alcohol, an ethoxylated fully esterified polyhydric alcohol and an ethoxylated partially esterified polyhydri

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