Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2001-08-14
2003-11-04
Naff, David M. (Department: 1651)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S400000, C424S402000, C424S488000
Reexamination Certificate
active
06641822
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a composition containing moisture regulators for tissue products, a process for the production of these products, the use of the composition for the treatment of tissue products as well as tissue products in the form of wet-laid, including TAD, or air-laid products (non-wovens) on the basis of sheet-like support materials containing primarily cellulose fibers.
2. Description of the Related Art
The present invention relates to a skin-care as well as softness-enhancing composition for the treatment of tissue products which can be used, for example, for tissue paper such as facial tissues, cosmetic tissues, toilet paper, household paper towels and the like.
Paper cloth, sheets or non-wovens, also called tissue or tissue paper or tissue cloth in the hygienic paper area when they have low basis weights, are articles of daily use which have become indispensable in modem society. Tissue products such as facial tissues, cosmetic tissues, make-up removal wipes, household paper towels and toilet paper make up a large part of the trade volume, whereby there is a tendency towards emollient products. In the case of tissue products with a special emollient character, aside from the skin-care aspect, the aspect of extreme softness of the tissues is also the focus of consumer interest. As far as the skin-care properties are concerned, in addition to the greater softness of the products and the passive skin-care already associated with this, this entails mainly chemical substances that can be applied onto the tissue as a component of a composition. The term “active skin-care” is used below to mean that a composition is applied onto the tissue and then transferred to the skin when this tissue is used. Thus, on the one hand, through the use of a soft tissue, the skin should not be additionally irritated and, on the other hand, if the application quantity is sufficient, the skin should soothed and reddening of the skin largely prevented or at least mitigated. Skin-care components of the composition are those substances that have the effects on the skin of soothing, of preventing or inhibiting irritation, of moisturizing and the like, and that are of the kind known from skin cosmetics as components of skin lotions, skin creams, skin ointments, shampoos, etc.
The term “passive skin-care” is used to describe the gentleness of a tissue product, resulting from extreme softness, that is to say, high surface smoothness/gentleness in conjunction with high crumple softness. This softness can be further improved by the composition and by the morphological structure of the tissue product, by mechanical measures such as smoothing or roughening as well as by the addition of suitable chemical auxiliaries.
In general, “softness” in tissue products refers to the subjective tactile experience of consumers when they take the product into their hands and rub it over their skin or crumple it in their hands. Please refer to the older patent application WO96/08601 for further details on the softness and on the production of the tissue products.
The use of chemicals to increase the softness of tissue products is likewise known.
These chemicals are usually cationic surfactants of the type described in German Preliminary Published Application No. 4,334,367 or EP-A 0,688,901 or else a glucose glutamate of the type found in U.S. Pat. No. 4,882,221. Another possibility for obtaining soft tissue paper is to use non-ionic surfactants of the type described in European Patent Application No. 347,177 or the use of polysiloxanes that are described in greater depth, for example, in European Patent Application Nos. 347,153 and 347,154.
Moreover, a non-drying cleansing cloth is known from DE-C 3,447,499 whereby an emulsion is applied onto a support material, said emulsion consisting of at least one moisture regulator, preferably polyethylene glycol, and at least one additional liquid substance.
Moreover, WO96108601 already described compositions containing polysiloxanes for tissue paper products that contain 25% to 95% by weight of at least one polyhydroxy compound, 5% to 75% by weight of polysiloxane as well as, relative to 100 parts by weight of this mixture, 0% to 35% by weight of water. In this application, it was possible to demonstrate that the above-mentioned combination has a synergistic effect on the softness. The above-mentioned state of the art had always had the objective of creating tissue products with greater softness in which the mechanical properties are not negatively influenced,
U.S. Pat. No. 4,786,367 relates to a web of cellulosic fibers containing 0.1% to 2% by weight, relative to the fiber web, of a lauroamphoglycinate. However, this publication contains no information indicating that this fiber web additionally contains moisture regulators, nor does it suggest this.
German Preliminary Published Application No. 3,237,574 relates to the use of special amine oxides of the type defined by the general formula (I) below as an auxiliary in the production of cellulose, paper or special hygiene products in order to reduce the mechanical strength and to Improve the wettability or water absorption capacity. These amine oxides are normally added in quantities of 0.02% to 2.0%, preferably 0.01 to 1%, relative to the dry weight of the cellulose. Here, too, this publication neither describes as prior art nor suggests adding moisture regulators to such compositions for tissue products or to the tissue products themselves.
EP-A 0,347,176 relates to a tissue paper with a basis weight of 10 to 65 grams per m
2
and a density of no more than 0.6 grams per cm
3
, whereby, in addition to cellulose fibers, this paper contains at least 0.01% by weight of a non-cationic surfactant, relative to the dry fiber weight of the paper, whereby said non-cationic surfactant has been applied onto the moist tissue web. The above-mentioned non-cationic surfactant is, for example, a water-soluble amine oxide with an alkyl group having 10 to 15 carbon atoms and 2 (hydroxy)alkyl groups having 1 to 3 carbon atoms. Once again, it cannot be gleaned from this publication to also add moisture regulators to such a composition containing such surfactants and to use this mixture on tissue products, nor is this suggested.
EP-A 0,347,177 defines the product mentioned in EP-A 0,347,176 as well as the applicable production process. Hence, once again, the currently claimed subject matter is neither suggested nor described as prior art.
EP-A 0,688,901 relates to a tissue paper product to which 3% to 35% by dry weight of an aqueous composition that imparts softness has been added, whereby said composition that imparts softness consists of 20% to 98% by weight of glycerin and 0.2% to 5% by weight of a quaternary ammonium compound, which is usually meant to refer to a cationic surfactant rather than a non-ionic or ampho-ionic surfactant. Hence, this publication neither describes as prior art nor suggests the use of specific amounts of a special non-ionic surfactant. A substitution of the cationic surfactant for a non-ionic surfactant is not suggested either, since both substance classes are normally not comparable to each other due to their different realms of application.
DE-C 3,447,499 relates to a non-drying cleansing cloth consisting of a sheet-like support material onto which an emulsion has been applied that contains water and a moisture regulator, whereby fine-particle, inorganic and/or organic dispersible solids have necessarily been applied onto the support material. Once again, it cannot be gleaned from this publication to add even special amounts of a special non-ionic surfactant to such a composition for tissue products or to tissue products themselves, without the corresponding fine-particle, inorganic and/or organic, dispersible solids.
EP-A 0,282,289 relates to a skin-care composition containing 1% to 35% by weight of a salt of a citric acid monoalkylester. A paraffin oil or vegetable oil is used as the carrier for this composition. This neither describes as prior
Eichhorn Stephan
Hill Walter
Nueunhoeffer Hans
Paleske Peter von
Naff David M.
SCA Hygiene Products GmbH
Ware Deborah K.
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