Water-soluble pressure-sensitive mucoadhesive and devices provided therewith for emplacement in a mucosa-lined body cavity
First Claim
1. A water-soluble pressure-sensitive adhesive comprising a water-soluble polymer and a water-soluble plasticizer, said polymer having a T(g) or a T(m) greater than about 25°
- C. and having a hydrophilicity greater than about 25%, said plasticizer being miscible with said polymer at room temperature and being liquid at room temperature and having a boiling point higher than 80°
C.
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Accused Products
Abstract
Water-soluble pressure-sensitive adhesives include a water-soluble polymer that is made tacky at room temperature by addition of a water-soluble plasticizer that is miscible with the polymer. Suitable polymers are solid at room temperature; and have a hydrophilicity as measured by water uptake greater than about 25%; they are liquid at room temperature and have a boiling point higher than about 80° C. The adhesives according to the invention may conveniently be provided in dry film form. Preferred water-soluble pressure-sensitive adhesives of the invention adhere both to mucosal surfaces and to a variety of materials that may constitute a part of a device or prosthesis to be held in a body cavity that has a mucosal lining. Also, a laminated device for the controlled release of a substance within a mucosa-lined body cavity includes the substance dissolved or dispersed in either or both of a water-soluble pressure-sensitive adhesive layer and optionally one or more water-soluble polymer layers. Also, devices for administering a substance over an extended time for relief of sore throat or cough, or for administering a breath freshening agent, particularly a mint odorant, include a water soluble polymer film layer containing the active ingredient, and a water soluble pressure sensitive mucoadhesive layer.
340 Citations
45 Claims
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1. A water-soluble pressure-sensitive adhesive comprising a water-soluble polymer and a water-soluble plasticizer, said polymer having a T(g) or a T(m) greater than about 25°
- C. and having a hydrophilicity greater than about 25%, said plasticizer being miscible with said polymer at room temperature and being liquid at room temperature and having a boiling point higher than 80°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
- C. and having a hydrophilicity greater than about 25%, said plasticizer being miscible with said polymer at room temperature and being liquid at room temperature and having a boiling point higher than 80°
Specification