Patent ID: 6365645
Filing Date: 2002-04-02
Classification: A61K,A61L,A61Q,C08L,C09J

Abstract:
A topical adhesive for application of functional articles to the skin, said functional articles being cosmetic or pharmaceutical delivery articles, decorative cosmetics or cleaning articles,said adhesive having an elastic modulus at a temperature of 37Â° C. (100Â° F.), Gâ€²37, a viscous modulus at a temperature of 37Â° C. (100Â° F.), Gâ€³37, and a difference &Dgr;(Gâ€²37âˆ’Gâ€³37) between said elastic modulus Gâ€²37 (1 rad/sec) and said viscous modulus Gâ€³37, said adhesive being selected to have Gâ€²37 (1 rad/sec) in the range 1500 Pa to 20000 Pa; Gâ€³37 (1 rad/sec) in the range 100 Pa to 15000 Pa; the ratio Gâ€²37 (1 rad/sec)/Gâ€³37 (1 rad/sec) is in the rage 3 to 30; the radio G37â€²&af;(100&it;â€ƒ&it;rad/sec)-G37â€³&af;(100&it;â€ƒ&it;rad/sec)G37â€²&it;(1&it;â€ƒ&it;rad/sec)-G37â€³&it;(1&it;â€ƒ&it;rad/sec)is not less than 0.5; alternatively either Gâ€²37 (100 rad/sec)âˆ’Gâ€²37 (1 rad/sec) is not greater than 10000 Pa; or the ratio G37â€²&af;(100&it;â€ƒ&it;rad/sec)-G37â€²&it;(1&it;â€ƒ&it;rad/sec)G37â€²&it;(1&it;â€ƒ&it;rad/sec)is not greater than 1.5, or a combination thereof, the difference &Dgr;(Gâ€²3731 Gâ€³37) (1 rad/sec) is greater than or equal to 1250 Pa; said topical adhesive comprising: from 45% to 99.5% by weight of a hydrophobic plasticizing compound or composition which is liquid at 20Â° C.; from 0.5% to 20% by weight of a polymeric compound or composition which is solvable or swellable in said plasticizing compound or composition; a tackifying resin in an amount of from 0% to 50% by weight of said composition.