EP0861317B1 - Soap based cleaning composition - Google Patents

Soap based cleaning composition Download PDF

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Publication number
EP0861317B1
EP0861317B1 EP96930197A EP96930197A EP0861317B1 EP 0861317 B1 EP0861317 B1 EP 0861317B1 EP 96930197 A EP96930197 A EP 96930197A EP 96930197 A EP96930197 A EP 96930197A EP 0861317 B1 EP0861317 B1 EP 0861317B1
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EP
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Prior art keywords
soap
talc
microns
added
process according
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EP96930197A
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German (de)
French (fr)
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EP0861317A1 (en
Inventor
Didier Arseguel
Richard Baeza
Patrice Raymond Gerault
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Imerys Talc Luzenac France SAS
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Talc de Luzenac SA
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/18—Water-insoluble compounds

Definitions

  • the invention relates to a method for reduce the drying properties of a soap based on fatty acid salts. It extends to new compositions cleaning agents prepared by implementing this process.
  • talcs of the type standard as a soap filler to reduce the cost of products obtained and sometimes, to increase the impression of softness felt during cleaning (due to the character lamellar of talc); however, the softening achieved during use is not related to drying felt after use, and these known products always have drying properties once that the water used has evaporated.
  • the present invention aims to reduce the drying properties of a soap based on acid salts fatty so as to remove the unpleasant feeling of drying out from the action of soap, when water used during cleaning has evaporated.
  • Talc means the mineral hydrated magnesium silicate, the mineral chlorite (hydrated magnesium aluminum silicate), i.e. mixture of the two, possibly combined with others minerals (dolomite, ...), or again, a substance derived talc, having similar properties.
  • mean diameter D 50 is meant a diameter such that 50% of the grains by weight have a size smaller than said diameter; by “diameter D 95 " is meant a value such that 95% of the grains by weight have a size less than said value.
  • the packed bulk density of a powder is defined by standard AFNOR NFT30-042.
  • a talc it gives an image of the shape of the grains: effect, with equivalent particle size distribution, a talc having very elongated lamellar grains has a compacted bulk density lower than a talc having grains of less elongated shape (more spheroid).
  • this parameter can be considered in practice for talc as a coefficient allowing to appreciate the shape of the particles of it.
  • the invention comes from the observation following, made during series of comparative tests: surprisingly, we get a reduction significant drying properties of a soap when incorporating talcs into it, the grains have slightly elongated shapes, relatively spheroids (i.e. for which the surface ratio basal / lateral surface is not very high), in the measurement where the grain size does not exceed the values mentioned above.
  • a talc is used microcrystalline which, by nature, presents grains of more spheroid shape, each grain being constituted by elementary particles linked together, these particles elementaries of size less than or equal to 1 micron do presenting no privileged orientation.
  • talc of the lamellar type having undergone a grinding capable of breaking at least partially its lamellae (impact grinding or other).
  • talc protective film which has a sufficient stability to remain in place during rinsing and to play the role of barrier limiting the passage of water molecules and therefore dehydration of the epidermis, until the lipid film destroyed by the action of soap.
  • talc a talc having an iron content of less than approximately 1.0% is preferably used in order to avoid any risk of degradation of the soap over time (this iron content being the total iron content expressed in the form of F 2 O 3 ).
  • the invention extends to the compositions of cleaning with low drying properties, obtained by implementation of the above method, adding to a soap a talc having the characteristics previously described.
  • the temperature of the water used was 40 ° C. with a flow rate of 1 l / min.
  • Results are scored on a scale ranging from - 2 to + 8: the higher the value, the higher the result is positive:
  • the method is to submit a known amount of powder under packing conditions defined in standard AFNOR NF T 30-042.
  • the particle size analysis was carried out by a "Sedigraph 5000" device (registered trademark) the method is based on the measurement of the solid concentration (by absorption of an X-ray beam) from a suspension at during gravity sedimentation. It applies to powders whose grains have diameters between 0.5 and 100 ⁇ m.
  • the talc / soap premix is made in a classic ribbon mixer.
  • the final stages of the soap making from the premix are traditional (grinding, refining, extrusion, cutting, pressing).
  • Example 1 demonstration of the reduction in the drying properties of the additive soap.
  • This example provides a comparison between a reference soap without talc and a soap containing talc (A) according to the process of the invention.
  • Example 2 demonstration of the influence of the particle size distribution.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)

Description

L'invention concerne un procédé permettant de réduire les propriétés desséchantes d'un savon à base de sels d'acide gras. Elle s'étend aux nouvelles compositions de nettoyage préparées par mise en oeuvre de ce procédé.The invention relates to a method for reduce the drying properties of a soap based on fatty acid salts. It extends to new compositions cleaning agents prepared by implementing this process.

On sait que les savons de toilette à base d'acide gras possèdent le défaut de présenter un fort pouvoir desséchant pour la peau. Ce défaut se traduit par une impression désagréable de dessèchement de la peau accompagnée d'une sensation d'étirement, qui interviennent quelques minutes après utilisation lorsque toute l'eau utilisée s'est évaporée et que la fraícheur apportée par celle-ci a disparu.We know that based toilet soaps fatty acid have the defect of having a strong drying power for the skin. This defect results in an unpleasant feeling of dryness of the skin accompanied by a feeling of stretching, which occur a few minutes after use when all the water used evaporated and the freshness provided by it has disappeared.

On a déjà utilisé (cf. DE-C-711 700) des talcs de type standard comme charge de savons afin de réduire le coût des produits obtenus et parfois, d'accroítre l'impression de douceur ressentie lors du nettoyage (du fait du caractère lamellaire du talc) ; toutefois, l'adoucissement obtenu pendant l'utilisation n'est pas lié au dessèchement ressenti après l'utilisation, et ces produits connus présentent toujours des propriétés desséchantes, une fois que l'eau utilisée s'est évaporée.We have already used (cf. DE-C-711 700) talcs of the type standard as a soap filler to reduce the cost of products obtained and sometimes, to increase the impression of softness felt during cleaning (due to the character lamellar of talc); however, the softening achieved during use is not related to drying felt after use, and these known products always have drying properties once that the water used has evaporated.

La présente invention vise à réduire les propriétés desséchantes d'un savon à base de sels d'acide gras de façon à supprimer la sensation désagréable de dessèchement provenant de l'action du savon, lorsque l'eau utilisée lors du nettoyage s'est évaporée.The present invention aims to reduce the drying properties of a soap based on acid salts fatty so as to remove the unpleasant feeling of drying out from the action of soap, when water used during cleaning has evaporated.

Le procédé de l'invention a pour objectif de créer sur la peau, lors de l'utilisation, un film se substituant au film lipidique naturel qui est détruit ou endommagé par le savon. On a en effet mis en évidence que l'impression de dessèchement est due à la destruction ou la détérioration de ce film lipidique qui protége l'épiderme et forme une barrière limitant la déshydratation superficielle de la peau. Lors de l'utilisation du savon, ce film lipidique est solubilisé par les acides gras en raison de leurs propriétés tensioactives. En l'absence de ce film et jusqu'à reconstitution par l'épiderme, une déshydratation anormale se produit à la surface de l'épiderme avec pour conséquence les sensations désagréables précitées (dessèchement, étirement) et des risques d'altération de la peau. L'invention se propose de créer sur la peau, lors de l'utilisation du savon, un film de protection stable se substituant au film lipidique naturel en vue de limiter la déshydratation superficielle de l'épiderme jusqu'à reconstitution du film lipidique naturel. A cet effet, le procédé de l'invention consiste à ajouter au savon un talc combinant les caractéristiques suivantes :

  • une masse volumique apparente tassée sensiblement inférieure à 0,70 g/cm3,
  • une répartition granulométrique telle que le diamètre moyen D50 des grains est sensiblement inférieur à 6 microns et que le diamètre D95 est sensiblement inférieur à 20 microns.
The aim of the process of the invention is to create on the skin, during use, a film replacing the natural lipid film which is destroyed or damaged by the soap. It has indeed been demonstrated that the impression of dryness is due to the destruction or deterioration of this lipid film which protects the epidermis and forms a barrier limiting the surface dehydration of the skin. When soap is used, this lipid film is dissolved by fatty acids due to their surfactant properties. In the absence of this film and until reconstituted by the epidermis, an abnormal dehydration occurs on the surface of the epidermis with as a consequence the aforementioned unpleasant sensations (drying, stretching) and risks of alteration of the skin. . The invention proposes to create on the skin, when using soap, a stable protective film replacing the natural lipid film in order to limit the surface dehydration of the epidermis until the natural lipid film is reconstituted. To this end, the process of the invention consists in adding to the soap a talc combining the following characteristics:
  • a compacted bulk density substantially less than 0.70 g / cm3,
  • a particle size distribution such that the mean diameter D 50 of the grains is substantially less than 6 microns and that the diameter D 95 is substantially less than 20 microns.

On entend par "talc" soit le minéral silicate de magnésium hydraté, soit le minéral chlorite (silicate de magnésium et d'aluminium hydraté), soit un mélange des deux, associé le cas échéant à d'autres minéraux (dolomite,...), soit encore, une substance issue du talc, présentant des propriétés analogues."Talc" means the mineral hydrated magnesium silicate, the mineral chlorite (hydrated magnesium aluminum silicate), i.e. mixture of the two, possibly combined with others minerals (dolomite, ...), or again, a substance derived talc, having similar properties.

Par "diamètre moyen D50", on entend un diamètre tel que 50 % des grains en poids ont une taille inférieure audit diamètre ; par "diamètre D95", on entend une valeur telle que 95 % des grains en poids ont une taille inférieure à ladite valeur.By "mean diameter D 50 " is meant a diameter such that 50% of the grains by weight have a size smaller than said diameter; by "diameter D 95 " is meant a value such that 95% of the grains by weight have a size less than said value.

La masse volumique apparente tassée d'une poudre est définie par la norme AFNOR NFT30-042. Pour un talc, elle donne une image de la forme des grains : en effet, à répartition granulométrique équivalente, un talc ayant des grains de forme lamellaire très allongée possède une masse volumique apparente tassée plus faible qu'un talc ayant des grains de forme moins allongée (plus sphéroïde). Ainsi, à granulométrie équivalente, ce paramètre peut être considéré en pratique pour le talc comme un coefficient permettant d'apprécier la forme des particules de celui-ci.The packed bulk density of a powder is defined by standard AFNOR NFT30-042. For a talc, it gives an image of the shape of the grains: effect, with equivalent particle size distribution, a talc having very elongated lamellar grains has a compacted bulk density lower than a talc having grains of less elongated shape (more spheroid). Thus, at equivalent particle size, this parameter can be considered in practice for talc as a coefficient allowing to appreciate the shape of the particles of it.

L'invention provient de la constatation suivante, faite au cours de séries d'essais comparatifs : de façon surprenante, on obtient une réduction significative des propriétés desséchantes d'un savon lorsque l'on incorpore dans celui-ci des talcs dont les grains ont des formes peu allongées, relativement sphéroïdes (c'est-à-dire pour lesquelles le rapport surface basale/surface latérale n'est pas très élevé), dans la mesure où la taille des grains n'excède pas les valeurs précitées.The invention comes from the observation following, made during series of comparative tests: surprisingly, we get a reduction significant drying properties of a soap when incorporating talcs into it, the grains have slightly elongated shapes, relatively spheroids (i.e. for which the surface ratio basal / lateral surface is not very high), in the measurement where the grain size does not exceed the values mentioned above.

De préférence, on utilise un talc microcristallin qui, par nature, présente des grains de forme plus sphéroïde, chaque grain étant constitué par des particules élémentaires liées entre elles, ces particules élémentaires de taille inférieure ou égale à 1 micron ne présentant pas d'orientation privilégiée.Preferably, a talc is used microcrystalline which, by nature, presents grains of more spheroid shape, each grain being constituted by elementary particles linked together, these particles elementaries of size less than or equal to 1 micron do presenting no privileged orientation.

Il est également possible d'utiliser un talc de type lamellaire ayant subi un broyage apte à rompre au moins partiellement ses lamelles (broyage à impacts ou autres).It is also possible to use a talc of the lamellar type having undergone a grinding capable of breaking at least partially its lamellae (impact grinding or other).

Selon un mode de mise en oeuvre préférentiel du procédé, on utilise un talc microcristallin combinant les caractéristiques suivantes :

  • une masse volumique apparente tassée comprise entre 0,20 et 0,60 g/cm3,
  • une répartition granulométrique telle que le diamètre moyen D50 est compris entre 2 et 5 microns et le diamètre D95 est compris entre 6 et 14 microns.
According to a preferred embodiment of the process, a microcrystalline talc is used combining the following characteristics:
  • a packed bulk density of between 0.20 and 0.60 g / cm3,
  • a particle size distribution such that the average diameter D 50 is between 2 and 5 microns and the diameter D 95 is between 6 and 14 microns.

On a pu observer de meilleurs résultats lorsqu'on utilise un talc microcristallin ayant subi un broyage à impacts conduisant à une masse volumique apparente tassée comprise entre 0,38 et 0,57 g/cm3.We have seen better results when using a microcrystalline talc having undergone a impact grinding leading to a density apparent packed between 0.38 and 0.57 g / cm3.

Les résultats obtenus sont difficilement explicables à l'heure actuelle. Il semble que les caractéristiques du talc utilisé (masse volumique apparente tassée corrélée à la forme des grains, répartition granulométrique) conduisent à un bon accrochage et une bonne rétention du talc à la surface de la peau, alors que des grains plus lamellaires ou de tailles supérieures ne sont pas retenus par celle-ci et sont éliminés au rinçage. Ainsi, dans l'invention, se forme à la surface de la peau un film protecteur hydrophobe de talc qui présente une stabilité suffisante pour rester en place au rinçage et pour jouer le rôle de barrière limitant le passage des molécules d'eau et donc la déshydratation de l'épiderme, jusqu'à reconstitution du film lipidique détruit par l'action du savon.The results obtained are difficult explicable at present. It seems that characteristics of the talc used (apparent density packed correlated to grain shape, distribution size) lead to a good grip and a good retention of talc on the surface of the skin, while more lamellar or larger grains do not are not retained by it and are eliminated on rinsing. Thus, in the invention, is formed on the surface of the skin. a hydrophobic talc protective film which has a sufficient stability to remain in place during rinsing and to play the role of barrier limiting the passage of water molecules and therefore dehydration of the epidermis, until the lipid film destroyed by the action of soap.

Il est à noter que l'effet connu d'adoucissement pendant l'utilisation se retrouve intégralement avec les formes de talc précitées ce qui constitue un avantage supplémentaire de l'invention.It should be noted that the known effect softening during use is found integrally with the aforementioned forms of talc which constitutes an additional advantage of the invention.

Il semble que les meilleurs résultats soient obtenus en ajoutant au savon une proportion pondérale de talc comprise entre 5% et 20 %. De plus, on utilise de préférence un talc ayant une teneur en fer inférieure à 1,0 % environ afin d'écarter tout risque de dégradation du savon dans le temps (cette teneur en fer étant la teneur en fer total exprimée sous forme de F2O3).It seems that the best results are obtained by adding to the soap a weight proportion of talc of between 5% and 20%. In addition, a talc having an iron content of less than approximately 1.0% is preferably used in order to avoid any risk of degradation of the soap over time (this iron content being the total iron content expressed in the form of F 2 O 3 ).

L'invention s'étend aux compositions de nettoyage à faibles propriétés desséchantes, obtenues par mise en oeuvre du procédé précité, en ajoutant à un savon un talc possédant les caractéristiques précédemment décrites.The invention extends to the compositions of cleaning with low drying properties, obtained by implementation of the above method, adding to a soap a talc having the characteristics previously described.

L'invention est illustrée par les exemples qui suivent.The invention is illustrated by the examples that follow.

Méthodologie d'évaluation utilisée dans les exemples :Evaluation methodology used in the examples:

L'ensemble des échantillons de savon a été évalué par des tests panels.All soap samples have been evaluated by panel tests.

Avant leurs évaluations, les échantillons de savon ont été conditionnés pendant 24 h à une température de 20° C et 60 % d'humidité relative.Before their evaluations, the samples of soap have been conditioned for 24 h at a temperature of 20 ° C and 60% relative humidity.

Durant ces évaluations, la température de l'eau utilisée était de 40° C avec un débit de 1 1/mn.During these assessments, the temperature of the water used was 40 ° C. with a flow rate of 1 l / min.

Les différents échantillons de savon ont été regroupés par paire, puis chaque échantillon a été évalué de façon indépendante par 8 panellistes avec un ordre d'utilisation à chaque fois différent.The different soap samples have grouped in pairs, then each sample was independently assessed by 8 panelists with a different order of use each time.

Chaque échantillon de savon a été évalué 24 fois.Each soap sample was assessed 24 time.

Protocole d'évaluation :Assessment protocol:

  • 1 - se laver les mains avec un savon de contrôle (simple savon sans additif),1 - wash your hands with soap control (simple soap without additives),
  • 2 - se sécher les mains vigoureusement avec une serviette,2 - dry your hands vigorously with a towel,
  • 3 - plonger les mains dans de l'eau pendant 5 secondes,3 - immerse your hands in water for 5 seconds,
  • 4 - mouiller le savon à tester et appliquer une quantité définie (10 rotations) sur le dos de la main gauche,4 - wet the soap to be tested and apply a defined amount (10 rotations) on the back of the hand left,
  • 5 - placer la paume de la main droite sur le dos de la main gauche et tourner rotativement 20 fois,5 - place the palm of the right hand on the back of the left hand and rotate 20 times,
  • 6 - se rincer les mains au robinet pendant 10 secondes sans les frotter,6 - rinse your hands at the tap for 10 seconds without rubbing them,
  • 7 - se sécher les mains avec une serviette en papier,7 - dry your hands with a towel in paper,
  • 8 - évaluer le toucher de la peau au bout de 3 minutes.8 - assess the feel of the skin at the end 3 minutes.

    • Les paramètres de la peau évalués sont les suivants :

    • sensation d'hydratation,
    • sensation de dessèchement,
    • sensation de douceur.
    The skin parameters evaluated are as follows:
    • feeling of hydration,
    • feeling of dryness,
    • feeling of softness.

    Les résultats sont notés sur une échelle allant de - 2 à + 8 : plus la valeur est élevée plus le résultat est positif :Results are scored on a scale ranging from - 2 to + 8: the higher the value, the higher the result is positive:

    Signification :Meaning:

    • paramètre hydratation : - 2 pas du tout hydraté,
         + 8 très hydraté,      hydration parameter: - 2 not hydrated at all,
      + 8 very hydrated,
    • paramètre dessèchement : - 2 très sec,
         + 8 pas du tout sec,      drying parameter: - 2 very dry,
      + 8 not at all dry,
    • paramètre douceur : - 2 pas du tout doux,
         + 8 très doux.      softness parameter: - 2 not at all soft,
      + 8 very soft.
    Définition des paramètres du talc ajoutéDefinition of the parameters of the added talc (1) Masse volumique apparente tassée(1) Compacted bulk density

    La méthode consiste à soumettre une quantité connue de poudre à des conditions de tassement définie à la norme AFNOR NF T 30-042.The method is to submit a known amount of powder under packing conditions defined in standard AFNOR NF T 30-042.

    La masse volumique apparente du produit tassé est calculée par le rapport de la masse utilisée sur le volume occupé après tassement, d'après la formule : M - MoV où

  • M est la masse en grammes de l'éprouvette contenant la poudre,
  • Mo est la masse en grammes de l'éprouvette vide,
  • V est le volume lu, en cm3, après tassement.
    • The apparent density of the packed product is calculated by the ratio of the mass used to the volume occupied after packing, according to the formula: M - Mo V or
  • M is the mass in grams of the test tube containing the powder,
  • Mo is the mass in grams of the empty test piece,
  • V is the volume read, in cm3, after compaction.

    • (2) Granulométrie(2) Grain size

    L'analyse granulométrique a été faite par un appareil "Sédigraph 5000" (marque déposée) la méthode est basée sur la mesure de la concentration en solide (par absorption d'un faisceau de rayons X) d'une suspension au cours de la sédimentation par gravité. Elle s'applique aux poudres dont les grains ont des diamètres compris entre 0,5 et 100 µm.The particle size analysis was carried out by a "Sedigraph 5000" device (registered trademark) the method is based on the measurement of the solid concentration (by absorption of an X-ray beam) from a suspension at during gravity sedimentation. It applies to powders whose grains have diameters between 0.5 and 100 µm.

    L'appareil trace directement la courbe de répartition exprimée en pourcentage de passant en fonction du diamètre de Stockes :

    • le D95 correspond au diamètre pour lequel 95 % des grains en poids ont un diamètre inférieur à cette valeur,
    • le D50 correspond au diamètre moyen pour lequel 50 % des grains en poids ont un diamètre inférieur à cette valeur.
    The device directly plots the distribution curve expressed as a percentage of passing according to the diameter of Stocks:
    • D 95 corresponds to the diameter for which 95% of the grains by weight have a diameter less than this value,
    • D 50 corresponds to the average diameter for which 50% of the grains by weight have a diameter less than this value.

    Formulations mises en oeuvre dans les exemples :Formulations used in the examples:

    FormuleFormula Savon de référence sans talcReference soap without talc Savon avec talcSoap with talc Base savon : "PRISAVON" marque déposée réf : 9242 d'Unichema InternationalSoap base: "PRISAVON" registered trademark ref: 9242 from Unichema International 98,6 %98.6% 87,3 %87.3% ParfumPerfume 1,0%1.0% 1,0%1.0% Oxyde de titaneTitanium oxide 0,4 %0.4% 0,4 %0.4% TalcTalc -- 10,0 %10.0% Eau ajoutéeWater added -- 1,3 *1.3 * * La base savon contient de l'eau (de l'ordre de 13%) et cette eau ajoutée dans la formulation avec talc permet de maintenir constante la teneur en eau globale des deux formulations.* The soap base contains water (around 13%) and this water added in the formulation with talc allows to keep the overall water content of the two constant formulations.

    Le prémélange talc/savon est réalisé dans un mélangeur à rubans classique. Les étapes finales de la fabrication du savon à partir du prémélange sont traditionnelles (broyage, raffinage, extrusion, coupure, pressage).The talc / soap premix is made in a classic ribbon mixer. The final stages of the soap making from the premix are traditional (grinding, refining, extrusion, cutting, pressing).

    Exemple 1 : mise en évidence de la réduction des propriétés desséchantes du savon additivé. Example 1 : demonstration of the reduction in the drying properties of the additive soap.

    Cet exemple fournit une comparaison entre un savon de référence sans talc et un savon contenant du talc (A) conforme au procédé de l'invention.This example provides a comparison between a reference soap without talc and a soap containing talc (A) according to the process of the invention.

    Paramètres du talc A :Parameters of talc A:

    • Type microcristallin ayant subi un broyage à impacts,Microcrystalline type having undergone impact grinding,
    • D95 = 8,5 µm,D 95 = 8.5 µm,
    • D50 = 3,4 µm,D 50 = 3.4 µm,
    • Masse volumique apparente tassée = 0,5g/cm3.Compacted bulk density = 0.5g / cm3.

    Résultats : Paramètres Savon de référence sans talc Savon avec talc A (procédé de l'invention) Paramètre d'hydratation 2,38 3,75 Paramètre de dessèchement 3,25 4,46 Paramètre de douceur 4,29 5,71 Results: Settings Reference soap without talc Soap with talc A (process of the invention) Hydration setting 2.38 3.75 Drying parameter 3.25 4.46 Softness setting 4.29 5.71

    Les résultats ont été analysés statistiquement par la méthode du t de Student, on constate que le procédé de l'invention donne un résultat significativement supérieur au savon de référence sans talc.The results have been analyzed statistically by the Student's t method, we see that the process of the invention gives a result significantly superior to the reference soap without talc.

    Exemple 2 : mise en évidence de l'influence de la répartition granulométrique. Example 2: demonstration of the influence of the particle size distribution.

    Cet exemple donne une comparaison entre un savon de référence sans talc et deux savons contenant du talc (B, C ). Le talc C n'étant pas conforme au procédé de l'invention par sa granulométrie.This example gives a comparison between a Talc-free reference soap and two soaps containing talc (B, C). Talc C not being in accordance with the the invention by its particle size.

    Paramètres des talcs (origine lamellaire)

    • talc B conforme au procédé de l'invention,
    • D95 = 7 µm,
    • D50 = 3 µm,
    • Masse volumique apparente tassée = 0,44 g/cm3.
    • talc C non conforme au procédé de l'invention,
    • D95 = 44 µm,
    • D50 = 18 µm,
    • Masse volumique apparente tassée = 0,74 g/cm3.
    Parameters of talcs (lamellar origin)
    • talc B according to the process of the invention,
    • D 95 = 7 µm,
    • D 50 = 3 µm,
    • Compacted bulk density = 0.44 g / cm3.
    • talc C not in accordance with the process of the invention,
    • D 95 = 44 µm,
    • D 50 = 18 µm,
    • Compacted bulk density = 0.74 g / cm3.

    Résultats : Paramètres Savon de référence sans talc Savon avec talc B (invention) Savon avec talc C Hydratation 3,83 4,88 3,42 Dessèchement 5,62 6,42 5,46 Douceur 5,54 6,29 5,54 Results: Settings Reference soap without talc Soap with talc B (invention) Soap with talc C Hydration 3.83 4.88 3.42 Drying out 5.62 6.42 5.46 Softness 5.54 6.29 5.54

    On constate que le procédé de l'invention (talc B) donne un résultat significativement supérieur par rapport au savon de référence sans talc et au savon contenant le talc C non conforme au procédé de l'invention.It can be seen that the process of the invention (talc B) gives a significantly higher result by compared to benchmark soap without talc and soap containing talc C not in accordance with the process of the invention.

    Claims (8)

    1. Process making it possible to reduce the drying properties of a soap based on fatty acid salts,
      characterized in that, with the aim of creating on the skin during use a film substituting for the natural lipidic film destroyed or damaged by the soap, talc is added to the said soap combining the following characteristics:
      a compacted apparent density substantially less than 0.70 g/cm3,
      a particle size distribution such that the mean diameter D50 of the grains is substantially less than 6 microns, and the diameter D95 is substantially less than 20 microns.
    2. Process according to claim 1, characterized in that there is added to the soap a proportion of talc of between 5 % and 20 % by weight.
    3. Process according to one of claims 1 or 2, characterized in that there is added to the soap a talc having been subjected to grinding capable of breaking at least partially the lamellae.
    4. Process according to one of claims 1, 2 or 3, characterized in that there is added to the soap a talc having an iron content of less than 1.0 %.
    5. Process according to one of claims 1 to 4, characterized in that there is added to the soap a microcrystalline talc, combining the following characteristics:
      a compacted apparent density of between 0.20 and 0.60 g/cm3,
      a particle size distribution such that the mean diameter D50 lies between 2 and 5 microns, and the diameter D95 lies between 6 and 14 microns.
    6. Process according to claim 5, characterized in that a microcrystalline talc is added having been subjected to impact grinding so as to have a compacted apparent density of between 0.38 and 0.57 g/cm3.
    7. Cleansing composition with low drying properties, comprising a soap based on fatty acid salts, with an addition of talc in accordance with the process according to one of claims 1 to 6, the said composition being capable, during its use, of creating on the skin a film substituting for the natural lipidic film destroyed or damaged by the soap.
    8. Use of a talc combining the following characteristics:
      a compacted apparent density substantially less than 0.70 g/cm3,
      a particle size distribution such that the mean diameter D50 of the grains is substantially less than 6 microns, and the diameter D95 is substantially less than 20 microns,
      in order to reduce the drying properties of a soap based on fatty acid salts, by creating on the skin a film substituting for the natural lipidic film destroyed or damaged by the soap.
    EP96930197A 1995-09-05 1996-09-03 Soap based cleaning composition Expired - Lifetime EP0861317B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    FR9510582A FR2738255B1 (en) 1995-09-05 1995-09-05 SOAP-BASED CLEANING COMPOSITION HAVING LOW DRYING PROPERTIES, AND METHOD OF PREPARATION
    FR9510582 1995-09-05
    PCT/FR1996/001342 WO1997009413A1 (en) 1995-09-05 1996-09-03 Soap based cleaning composition

    Publications (2)

    Publication Number Publication Date
    EP0861317A1 EP0861317A1 (en) 1998-09-02
    EP0861317B1 true EP0861317B1 (en) 2000-01-26

    Family

    ID=9482408

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96930197A Expired - Lifetime EP0861317B1 (en) 1995-09-05 1996-09-03 Soap based cleaning composition

    Country Status (10)

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    EP (1) EP0861317B1 (en)
    AU (1) AU6933596A (en)
    CZ (1) CZ289422B6 (en)
    DE (1) DE69606425T2 (en)
    ES (1) ES2143779T3 (en)
    FR (1) FR2738255B1 (en)
    HU (1) HUP9900002A3 (en)
    PL (1) PL183947B1 (en)
    TR (1) TR199800385T1 (en)
    WO (1) WO1997009413A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US9433566B2 (en) 2012-02-24 2016-09-06 Colgate-Palmolive Company Soap bar

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10157541A1 (en) * 2001-11-23 2003-06-12 Beiersdorf Ag Skin cleansing preparation
    DE10221812A1 (en) * 2002-05-16 2003-11-27 Beiersdorf Ag Aqueous cosmetic composition useful as a shaving or cleansing agent contains fatty acids or salts, emulsifiers, complexers, waxes and talc
    AU2010365058B2 (en) 2010-12-09 2015-07-23 Colgate-Palmolive Company Cleansing composition
    DE102018210101A1 (en) * 2018-06-21 2019-12-24 Beiersdorf Ag Cosmetic cleaning paste

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE711700C (en) * 1939-06-24 1941-10-04 Naumann Fein Und Kernseifenfab Process for the production of highly filled soaps
    US3520818A (en) * 1966-12-20 1970-07-21 Procter & Gamble Abrasive liquid detergent compositions
    US5264144A (en) * 1991-05-30 1993-11-23 The Procter & Gamble Company Freezer personal cleansing bar with selected fatty acid soaps for improved mildness and good lather
    CN1094088A (en) * 1993-01-11 1994-10-26 科尔加特·帕尔莫利弗公司 The soap composition that contains trisodium phosphate

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US9433566B2 (en) 2012-02-24 2016-09-06 Colgate-Palmolive Company Soap bar

    Also Published As

    Publication number Publication date
    HUP9900002A3 (en) 2000-01-28
    DE69606425T2 (en) 2000-08-03
    FR2738255B1 (en) 1997-10-17
    HUP9900002A2 (en) 1999-05-28
    EP0861317A1 (en) 1998-09-02
    TR199800385T1 (en) 1998-05-21
    FR2738255A1 (en) 1997-03-07
    DE69606425D1 (en) 2000-03-02
    ES2143779T3 (en) 2000-05-16
    CZ289422B6 (en) 2002-01-16
    PL325334A1 (en) 1998-07-20
    WO1997009413A1 (en) 1997-03-13
    AU6933596A (en) 1997-03-27
    PL183947B1 (en) 2002-08-30
    CZ65898A3 (en) 1998-06-17

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