Multi-phase delivery compositions and products incorporating such compositions
First Claim
1. A delivery composition comprising:
- (a) a carrier; and
(b) an aggregate of microcapsules each formed of an external phase surrounding an internal phase as a hydraulic encapsulation such that there is a pressure differential between the internal phase and an external environment at a site of delivery;
wherein the internal phase is hydrophilic and comprises a material selected from the group consisting of nicotine, flavorants, humectants, tobacco extracts, water, and combinations thereof; and
wherein the external phase is hydrophobic, comprises a lipid, and forms a substantially wall-like structure that is pseudoplastic and is non-collapsible.
2 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure relates to compositions that are useful in the delivery of various materials. In particular, the compositions comprise a suspension wherein an internal phase material is surrounded by an external phase material. The internal phase specifically can be a hydrophilic material, and the external phase specifically can be a hydrophobic material. The materials are combined so that the internal phase is substantially encapsulated by the external phase such that release can be controlled in relation to osmotic pressure differentials. The suspension can be combined with a carrier, and various systems and products can be formed with the suspension and optional carrier, such as oral strips, spray delivery systems, smokeless tobacco products, aerosol delivery devices, cigarettes, and packaging.
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Citations
18 Claims
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1. A delivery composition comprising:
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(a) a carrier; and (b) an aggregate of microcapsules each formed of an external phase surrounding an internal phase as a hydraulic encapsulation such that there is a pressure differential between the internal phase and an external environment at a site of delivery; wherein the internal phase is hydrophilic and comprises a material selected from the group consisting of nicotine, flavorants, humectants, tobacco extracts, water, and combinations thereof; and wherein the external phase is hydrophobic, comprises a lipid, and forms a substantially wall-like structure that is pseudoplastic and is non-collapsible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An oral strip comprising:
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at least a first thin film; and an aggregate of microcapsules each formed of an internal phase surrounded by an external phase in the form of a hydraulic encapsulation such that there is a pressure differential between the internal phase and an external environment at a site of delivery; wherein the internal phase is hydrophilic and comprises material selected from the group consisting of nicotine, flavorants, humectants, tobacco extracts, and combinations thereof; and wherein the external phase is hydrophobic, comprises a lipid, and forms a substantially wall-like structure that is pseudoplastic and is non-collapsible. - View Dependent Claims (16, 17, 18)
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Specification