Patent ID: 6200596
Filing Date: 2001-03-13
Classification: A61K,A61Q

Abstract:
A method of moisturizing mammalian skin without adversely affecting the adhesion of a acrylate or rubber based pressure sensitive adhesive comprising the steps of(1) coating the skin with a composition comprising(a) an effective amount of an acrylate polymer which has a solubility parameter of between about 6 and 10 (cal/cc).sup.1/2 in poorly hydrogen bonding solvents, said polymer comprising:(i) from 40 to 95 mole percent of the same or different ester monomers of the formula: ##STR5##whereinR.sup.1 is an alkyl radical containing 4 to 18 carbon atoms in cyclic, straight- or branched-chain configuration, andR.sup.2 is hydrogen or lower alkyl containing 1 to 4 carbon atoms; and(ii) from 5 to 60 mole percent by weight of the same or different acid monomers of the formula: ##STR6##whereinR.sup.3 is H or an alkyl group containing 1 to 18 carbon atoms;R.sup.4 is hydrogen, methyl, or --CO.sub.2 R.sup.3, andR.sup.5 is hydrogen, lower alkyl or --CH.sub.2 CO.sub.2 R.sup.3 ; provided when R.sup.4 is not hydrogen, R.sup.5 is hydrogen and when R.sup.5 is not hydrogen, R.sup.4 is hydrogen, and further provided that at least one R.sup.3 is hydrogen;(b) dissolved in a nonvolatile emollient oil conventionally used in the cosmetic art, which emollient oil has a solubility parameter in the range of 6 to 10 (cal/cc).sup.1/2 in poorly hydrogen-bonding solvents; which composition dries to a coating comprising at least 60 percent by weight of said emollient oil; and(2) applying said pressure sensitive adhesive over said composition;wherein said acrylate polymer is formulated such that the adhesion of said pressure sensitive adhesive to said composition is greater than the adhesion of said pressure sensitive adhesive to skin coated with emollient oil alone.