Oct. 10, 2002  11  US 2002/0147433 Al  [0089]  Suitable fatty alcohol type emollients include C - C$_{22 }$fatty alcohols, preferably  C$_{1}$cC$_{18 }$ fatty alcohols. Rep› resentative examples include cetyl alcohol and stearyl alco› hol,  and  mixtures thereof,  such as  cetearyl alcohol  (Available from the Procter & Gamble Company, Cincin› nati, Ohio as TA1618). When employed, these fatty alcohol  emollients are typically used in combination with the petro› leum-based emollients, such as petrolatum, at a weight ratio  of fatty alcohol emollient to petroleum-based emollient of  from about 1:1 to about 1:5, preferably from about 1:1 to  about 1:2.  [0090]  Other suitable types of emollients for use herein  include polysiloxane compounds. In general, suitable pol› ysiloxane materials for use in the present invention include  those having monomeric siloxane units of the following  structure:  [0091]  wherein,  R 1  and  R 2 ,  for each independent siloxane  monomeric unit can each independently be hydrogen or any  alkyl, aryl, alkenyl, alkaryl, arakyl, cycloalkyl,. halogenated  hydrocarbon, or other radical. Any of such radicals can be  substituted or unsubstituted.  R 1  and  R 2  radicals of any  particular monomeric unit may differ from the correspond› ing functionalities of the next adjoining monomeric unit.  Additionally, the polysiloxane can be either a straight chain,  a branched chain or have a cyclic structure. The radicals  R 1  and  R 2  can additionally independently be other silaceous  functionalities such as, but not limited to, siloxanes, polysi› loxanes, silanes, and polysilanes. The radicals  R 1  and  R 2  may contain any of a variety of organic fuctionalities includ› ing, for example, alcohol, carboxylic acid, phenyl, and  amine functionalities.  [0092]  Exemplary alkyl radicals are methyl, ethyl, propyl,  butyl, pentyl, hexyl, octyl, decyl, octadecyl, and the like.  Exemplary alkenyl radicals are vinyl, allyl, and the like.  Exemplary aryl radicals are phenyl, diphenyl, naphthyl, and  the like. Exemplary alkaryl radicals are toy  1, xylyl, ethylphe› nyl, and the like. Exemplary aralkyl radicals are benzyl,  alpha-phenylethyl,  beta-phenylethyl,  alpha-phenylbutyl,  and the like. Exemplary cycloalkyl radicals are cyclobutyl,  cyclopentyl, cyclohexyl, and the like. Exemplary haloge› nated hydrocarbon radicals are chloromethyl, bromoethyl,  tetrafluorethyl,  fluorethyl,  trifluorethyl,  trifluorotloyl,  hexafluoroxylyl, and the like.  [0093]  The viscosity of polysiloxanes useful in the present  invention may vary as widely as the viscosity of polysilox› anes in general varies, so long as the polysiloxane is  flowable or can be made to be flowable for application to the  absorbent article. This includes, but is not limited to, vis› cosity as low as 5 centistokes (at 37°  C. as measured by a  glass capillary viscometer according to  ASTM  standard  method D445) to about 20,000,000 centistokes. Preferably  the polysiloxanes have a viscosity at 37°  C. ranging from  about 5 to about 5,000 centistokes, more preferably from  about 5 to about 2,000 centistokes, most preferably from  about 100 to about 1000 centistokes. High viscosity polysi- loxanes which themselves are resistant to flowing can be  effectively deposited upon the absorbent articles by such  methods as, for example, emulsifying the polysiloxane in  surfactant or providing the polysiloxane in solution with the  aid of a solvent, such as hexane, listed for exemplary  purposes only. Particular methods for applying polysiloxane  emollients to absorbent articles are discussed in more detail  hereinafter.  [0094]  Preferred polysiloxanes compounds for use in the  present invention are disclosed in U.S. Pat. No. 5,059,282,  issued to Ampulski et al on Oct. 22, 1991, which is incor› porated herein by reference. Particularly preferred polysi› loxane compounds for use as emollients in the compositions  of the present invention include phenyl-functional polym› ethylsiloxane compounds ( e.g., Dow Corning 556 Cosmetic› Grade Fluid: polyphenylmethylsiloxane) and cetyl or stearyl  functionalized dimethicones such as Dow 2502 and Dow  2503 polysiloxane liquids, respectively. In addition to such  substitution with phenyl-functional or alkyl groups, effective  substitution may be made with amino, carboxyl, hydroxyl,  ether, polyether, aldehyde, ketone, amide, ester, and thiol  groups. Of these effective substituent groups, the family of  groups comprising phenyl, alkyl, carboxyl, amino and  hydroxyl groups are more preferred than the others; with  amino and phenyl-functional groups being most preferred.  [0095]  Suitable humectants include glycerin, propylene  glycol, sorbitol, trihydroxy stearin, and the like.  [0096]  When present, the amount of emollient that can be  included in the composition will depend on a variety of  factors, including the particular emollient involved, the skin  benefits desired, the other components in the composition  and like factors. The composition will typically comprise  from about 10 to about 95% of the emollient. Preferably  from about 20 to about 80%, and more preferably from  about 40 to about 75%, by weight, of the emollient.  [0097]  Another optional, preferred component of the pro› ton donating active-containing skin compositions useful in  the present invention is an agent capable of immobilizing the  composition (including the proton donating active, the pre› ferred emollient and/or other skin condition/protective  agents) in the desired location in or on the treated article.  Because certain of the preferred emollients in the composi› tion have a plastic or liquid consistency at 20°  C., they tend  to flow or migrate, even when subjected to modest shear.  When applied to a wearer-contacting surface or other loca› tion of an absorbent article, especially in a melted or molten  state, the emollient will not remain primarily in or on the  treated region. Instead, the emollient will tend to migrate  and flow to undesired regions of the article.  [0098]  Specifically, if the emollient migrates into the inte› rior of the article, it can cause undesired effects on the  absorbency of the article core due to the hydrophobic  characteristics of many of the emollients and other skin  conditioning agents used in the compositions useful in the  present invention.  It also means that much more emollient  has to be applied to the article to get the desired therapeutic  and/or protective benefits. Increasing the level of emollient  not only increases the cost, but also exacerbates the unde› sirable effect on the absorbency of the article’s core and  undesired transfer of composition during processing/con› verting of the treated articles.  [0099]  The immobilizing agent counteracts this tendency  of the emollient to migrate or flow by keeping the emollient 