Silicone pressure sensitive adhesive containing alkylmethylsiloxane wax and related methods and devices
First Claim
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1. A matrix transdermal drug delivery device for a bioactive agent, comprising:
- (a) a backing substrate;
(b) a matrix atop at least portions of said backing substrate, said matrix containing a hot-melt, silicone pressure sensitive adhesive composition containing a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax which decreases dynamic viscosity of the adhesive composition at temperatures ranging from 50°
C. to about 200°
C. and said adhesive including compositions selected from the group consisting of drugs, excipients, co-solvents, enhancers, and mixtures thereof where the adhesive is compatible with said drugs, excipients and co-solvents and enhancers, said hot-melt, silicone pressure sensitive adhesive being disposed within said matrix; and
(c) a release liner contacted on the matrix.
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Abstract
Hot-melt silicone pressure sensitive adhesive compositions containing alkylmethylsiloxane waxes, methods of using the compositions and devices made using the compositions are disclosed. The hot-melt silicone pressure sensitive adhesive compositions include a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax having a melting point of between 30° C. and 70° C. The alkylmethylsiloxane wax decreases dynamic viscosity of the adhesive at temperatures ranging from about 50° C. to about 200° C.
51 Citations
21 Claims
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1. A matrix transdermal drug delivery device for a bioactive agent, comprising:
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(a) a backing substrate; (b) a matrix atop at least portions of said backing substrate, said matrix containing a hot-melt, silicone pressure sensitive adhesive composition containing a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax which decreases dynamic viscosity of the adhesive composition at temperatures ranging from 50°
C. to about 200°
C. and said adhesive including compositions selected from the group consisting of drugs, excipients, co-solvents, enhancers, and mixtures thereof where the adhesive is compatible with said drugs, excipients and co-solvents and enhancers, said hot-melt, silicone pressure sensitive adhesive being disposed within said matrix; and(c) a release liner contacted on the matrix. - View Dependent Claims (2, 3, 4, 12, 13, 14, 15, 16)
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5. A reservoir transdermal drug delivery device, comprising:
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(a) a backing substrate; (b) a reservoir attached to at least portions of the backing substrate, said reservoir containing compositions selected from the group consisting of drugs, excipients, co-solvents, enhancers, and mixtures thereof; (c) a hot-melt silicone pressure sensitive adhesive composition containing a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax which decreases dynamic viscosity of the adhesive composition at temperatures ranging from about 50°
C. to about 200°
C. coated on top of the reservoir and portions of the backing substrate not covered by the reservoir; and(d) a release liner attached to the silicone pressure sensitive adhesive. - View Dependent Claims (6, 7, 8, 9, 10, 11, 17, 18, 19, 20, 21)
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Specification