Hydrophilic foam pad for makeup removal
AssigneeCreative Products Resource Asociates, Ltd.
InventorGeorge W. Kellett
Life of this patent
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Abstract
A makeup remover pad is provided which comprises a resilient, open-celled hydrophilic foam matrix, wherein said matrix integrally incorporates an aqueous phase incorporating about 25-75% water, about 15-70% of a water-insoluble emollient oil, and an amount of surfactant effective to stabilize the aqueous phase so that it is released from the foam matrix as a homogeneous emulsion when the pad is applied to skin.
Claims20
A makeup remover pad comprising a resilient, open-celled, hydrophilic polyurethane foam matrix, wherein said matrix integrally incorporates an aqueous phase incorporating about 25-75% water, about 15-70% of a water-insoluble liquid emollient oil, and an amount of surfactant effective to stabilize the aqueous phase so that it is released from the foam matrix as a homogenous emulsion when the pad is applied to skin, and wherein said aqueous phase contains no natural or synthetic wax.
A makeup remover pad prepared by a process comprising:
- (a) forming an aqueous reactant phase comprising about 25-75% water, about 25-65% of a water-insoluble lliquid emollient oil and about 1-15% of a mixture of anionic surfactant and nonionic surfactant in a weight ratio of about 1.5-0.75:1, and wherein said aqueous reactant phase contains no natural or synthetic wax;
- and
- (b) mixing said aqueous reactant phase with a water-foamable prepolymer resin which contains at least two free isocyanate groups per resin molecule so that the final mole ratio of water to total free isocyanate groups is about 20-150:1, thereby converting the resin into a resilient, open-celled polyurethane foam body which integrally and releasably incorporates the aqueous reactant phase.
A makeup remover pad prepared by a process comprising:
- (a) forming an aqueous reactant phase comprising about 30-65% water, about 35-60% of a liquid mixture of mineral oil and a fatty acid ester comprising a (C.sub.5 -C.sub.30)alkyl (C.sub.8 -C.sub.12)fatty acid ester;
- and about 2.5-10% of a mixture of (i) a copolymer of ethylene oxide with a polyoxypropylene block having a molecular wieght of about 1500-3500 and (ii) a C.sub.8 -C.sub.22 fatty acid mono ester of a C.sub.2 -C.sub.5 polyol;
- and an anionic surfactant component comprising a fatty acid alkanol amine salt, in a weight ratio of nonionic surfactant component to anionic surfactant component of about 1.25-1:1, and wherein said aqueous reactant phase contains no natural or synthetic wax;
- and
- (b) mixing said aqueous reactant phase with a water-foamable prepolymer resin in a weight ratio of aqueous phase to prepolymer of about 2-1.5:1, said prepolymer resin comprising a to1uene diisocyanate-capped polyakylenoxy ether comprising about 1.3-2.6 mEeq/g of isocyanate groups, so as to convert said resin into a hydrophilic, resilient, open-celled polyurethane foam body.
Dependencies are inferred from the claim text.