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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0178558 (1994-01-07) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 366 인용 특허 : 0 |
A blend of at least two polymers, or at least one polymer and a soluble polyvinylpyrrolidone, in combination with a drug provides a pressure-sensitive adhesive composition for a transdermal drug delivery system in which the drug is delivered from the pressure-sensitive adhesive composition and throu
A blend of at least two polymers, or at least one polymer and a soluble polyvinylpyrrolidone, in combination with a drug provides a pressure-sensitive adhesive composition for a transdermal drug delivery system in which the drug is delivered from the pressure-sensitive adhesive composition and through dermis when the pressure-sensitive adhesive composition is in contact with human skin. According to the invention, soluble polyvinylpyrrolidone can be used to prevent crystallization of the drug, without affecting the rate of drug delivery from the pressure-sensitive adhesive composition.
A transdermal drug delivery system comprising a pressure-sensitive adhesive composition, wherein said composition comprises a blend of (a) a pressure-sensitive adhesive selected from the group consisting of (i) polyisoprene, polystyrene, polyethylene, polybutadiene , polyethylene/butylene, styrene/b
A transdermal drug delivery system comprising a pressure-sensitive adhesive composition, wherein said composition comprises a blend of (a) a pressure-sensitive adhesive selected from the group consisting of (i) polyisoprene, polystyrene, polyethylene, polybutadiene , polyethylene/butylene, styrene/butadiene, styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene/butylene-styrene block copolymers, butyl rubber, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polychloroprene, polyacrylonitrile and polychlorodiene, and mixtures thereof, in an amount from about 14% to about 94% by weight of the total pressure-sensitive adhesive composition; (ii) polyisobutylene and mixtures thereof in an amount from about 10% to about 90% by weight of the total pressure-sensitive adhesive composition; and (iii) polysiloxane and mixtures thereof in an amount from about 5% to about 95% by weight of the total pressure-sensitive adhesive composition; (b) a soluble polyvinylpyrrolidone in an amount from about 1% to about 20% by weight of the total pressure-sensitive adhesive composition; (c) one drug or a mixture of two or more drugs; and (d) optionally, an enhancer in an amount up to about by weight of the total pressure-sensitive adhesive composition. A transdermal drug delivery system comprising a pressure-sensitive adhesive composition, wherein said composition comprises of a blend of (a) a pressure-sensitive adhesive selected from the group consisting of (i) polyisoprene, polystyrene, polyethylene, polybutadiene, polyethylene/butylene, styrene/butadiene, styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene/butylene-styrene block copolymers, butyl rubber, polytetrafluoroethylene, polyvinyl chloride, polyvinylidene chloride, polychloroprene, polyacrylonitrile and polychlorodiene, and mixtures thereof, in an amount from about 14% to about 94% by weight of the total pressure-sensitive adhesive composition;; (ii) polyisobutylene and mixtures thereof in an amount from about 10% to about 90% by weight of the total pressure-sensitive adhesive composition; and (iii) polysiloxane and mixtures thereof in an amount from about 5% to about 95% by weight of the total pressure-sensitive adhesive composition; (b) a polyacrylate in an amount from about 5% to about 85%, wherein said polyacrylate and said pressure-sensitive adhesive (a) differ in solubility parameter by an increment of at least 2 (J/cm3)1/2; (c) a soluble polyvinylpyrrolidone in an amount from about 1% to about 20% by weight of the total pressure-sensitive adhesive composition; (d) one drug or a mixture of two or more drugs; and (e) optionally, an enhancer in an amount up to about 20% by weight of the total pressure-sensitive adhesive composition.
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