Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With oxygen or halogen containing chemical bleach or oxidant...
Reexamination Certificate
2002-06-11
2003-04-15
Delcotto, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With oxygen or halogen containing chemical bleach or oxidant...
C510S371000, C510S372000, C510S375000, C510S379000, C510S382000, C510S383000, C510S499000, C514S546000, C514S551000, C514S919000, C424S405000, C424SDIG001, C134S042000
Reexamination Certificate
active
06548469
ABSTRACT:
The invention relates to all types of cleaning compositions which comprise the insect repellent ethyl 3-(N-butylacetamino)propionate and are therefore used for cleaning and for simultaneously repelling insects from the surfaces and rooms to be cleaned.
In many respects, insects are a nuisance or even a threat to humans. In addition to the damage caused by some species of insects (for example the destruction of entire harvests), both humans and also many animals are troubled in one way or another, bitten and otherwise plagued by a wide range of insects. This can lead to infections and the transmission of dangerous diseases.
Insecticides are the main weapon in the fight against insects, but their use and toxicity profiles are not always without problems. These toxins often have undesirable effects on humans and animals, so that their use is limited or even banned.
However, measures such as the use of insecticides are not absolutely necessary to prevent the immediate nuisance. Some insects, such as, for example, cockroaches, in any case cannot be eradicated completely, and efforts are therefore increasingly directed more at repelling these insects than at destroying them.
Furthermore, protection of the environment is nowadays very much in the foreground, and preventive measures are therefore preferably taken.
Insect repellents are therefore now preferred to insecticides in combating insects, since the former are directed merely towards stopping insects from remaining and nesting on certain surfaces or in rooms.
Chemicals for repelling or destroying, for example, cockroaches, flies, mosquitoes or ants have been on the market for a long time, but many are dangerous to humans and animals or have a very unpleasant smell, so their adverse properties severely limit their use.
In view of the relatively small number of insect repellents which are not only effective but also acceptable from the toxicological aspect, great efforts to provide suitable products continue to be made in this field.
The object of the present invention was therefore to provide an insect repellent which effectively keeps away all types of insects, is easy to use and is toxicologically acceptable to humans and pets.
The substance ethyl 3-(N-butylacetamino)propionate is a proven insect repellent which has been known for a long time and is also employed as such in cosmetics formulations. It can be obtained commercially, for example from Merck KGaA, Darmstadt.
This substance, with its outstanding properties in respect of skin and mucosa tolerance without toxic, allergizing or sensitizing properties, has hitherto been used in cosmetics formulations in order to protect humans directly from attack by, for example, mosquitoes or flies.
This substance furthermore has a high chemical stability, i.e. it cannot be hydrolysed, cannot be photooxidized, cannot be oxidized and has a high heat stability.
Surprisingly, it has now been found that ethyl 3-(N-butylacetamino)propionate can also be incorporated into formulations of cleaning compositions of all types, and can therefore be used to drive off and keep away insects permanently from the surfaces cleaned with them, which can be hard or soft in nature.
It is known from the literature (U.S. Pat. No. 3,018,217), for example, to incorporate an insect repellent into a polishing composition for domestic floors, dibutyl succinate having been employed as the repellent. EP 0 525 893 also describes compositions for cleaning comprising various insect repellents, such as, for example, N,N-diethyl-m-toluamide (DEET). However, nowhere are cleaning compositions which comprise the abovementioned ethyl 3-(N-butylacetamino)propionate described.
In contrast to the prior art, the invention employs an insect repellent which has hitherto been used directly on humans, and the cleaning compositions according to the invention can thus be regarded as toxicologically acceptable and are therefore highly superior to the compositions known to date.
The term “insect” is used here in the broadest sense and is intended to include, for example, common cockroaches (German cockroaches and also American roaches), fleas, flies, mosquitoes, ants, lice, ticks, bugs and even spiders.
The invention thus relates to a cleaning composition which is characterized in that it comprises an active amount, which is sufficient to repel insects after treatment with this cleaning composition, of the insect repellent ethyl 3-(N-butylacetamino)propionate.
The invention furthermore relates to the use of the insect repellent ethyl 3-(N-butylacetamino)propionate in cleaning compositions for repelling insects.
The invention furthermore relates to a process for cleaning and simultaneously repelling insects, which is characterized in that a cleaning composition comprising an active amount, which is sufficient to repel insects, of the insect repellent ethyl 3-(N-butylacetamino)propionate is used on the surfaces to be cleaned.
The cleaning compositions according to the invention preferably comprise 0.1 to 20% by weight of ethyl 3-(N-butylacetamino)propionate, particularly preferably 0.1 to 10% by weight, especially preferably 0.1 to 6% by weight.
The insect repellent of the present invention can be incorporated into all types of cleaning compositions, preferably into domestic cleaners. If appropriate, these domestic cleaners can additionally comprise, as well as the ethyl 3-(N-butylacetamino)propionate according to the invention, one or more insect repellents in each case in an amount of 0.1 to 20% by weight. These can be both synthetic substances, such as, for example, diethyltoluamide, 2-ethyl-1,3-hexanediol, dimethyl phthalate or dibutyl succinate, and also essential oils which are naturally occurring or identical to those in nature and act as insect repellents, such as, for example, menthol oil, citronella oil or lemon oil.
The insect repellent is preferably incorporated into solutions (aqueous or aqueous-alcoholic) or dispersions (or dispersed in a pulverulent carrier), into cleaning agent compositions such as detergents, floor or wall cleaners (tile cleaners), window cleaners, upholstery or carpet cleaners, also in shampoo form, into solid or liquid soaps, into wax, into creams or into sprays.
It can be incorporated into any other suitable formulation in which it could be of benefit, for example into insecticides or antibacterial compositions, furniture polishes or, floor waxes or else into compositions for cleaning certain hand tools which are used, for example, for animal husbandry or in horticulture.
The use of the cleaning compositions according to the invention causes insects to avoid contact with the cleaned surface after the hard or soft surfaces have been cleaned, since a film of this cleaning composition comprising the insect repellent has been formed as a result of the cleaning process.
The insects are additionally kept away from the area of the cleaned surface by the smell of this composition.
Thus, for example, ants, common cockroaches and other insects can be stopped from penetrating into storage rooms by cleaning shelves, walls and the floor with a cleaning composition according to the invention.
Cleaning upholstery or carpets with suitable shampoos can also stop the insects from nesting there and laying their eggs therein.
Detergents can furthermore prevent insects from entering linen cupboards and therefore into clothes.
From the above description, it is obvious that a wide range of compositions are possible for the cleaning agent according to the invention, and the cleaning compositions can be used for many different purposes.
However, the invention is preferably used in the field of domestic cleaners.
Such cleaners are composed of a large number of components.
For example, they comprise organic (soaps) or preferably synthetically organic surface-active, wash-active substances (surfactants), which can be anionic, amphoteric, ampholytic, zwitterionic, nonionic or cationic in nature, or else a mixture thereof. The anionic detergent bases are by far the most important here. Many such detergents are described in “Surfac
Jalalian Mohammad
Martin Roland
Prenzel Maria Elisabeth
Rosell I Oller Francesc
Delcotto Gregory
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
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