Hydrogel compositions with an erodible backing member
First Claim
1. A composition comprising:
- (a) a hydrogel comprising;
(i) a water-swellable, water-insoluble polymer;
(ii) a blend of a hydrophilic polymer with a complementary oligomer capable of hydrogen or electrostatic bonding to the hydrophilic polymer; and
(iii) an active agent; and
(b) a backing member, where the backing member is comprised of a polymer composition that erodes in a moist environment at a slower rate than the hydrogel.
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Abstract
A composition is provided, wherein the composition comprises a water-swellable, water-insoluble polymer, a blend of a hydrophilic polymer with a complementary oligomer capable of hydrogen or electrostatic bonding to the hydrophilic polymer. The composition also includes a backing member. Active ingredients, such as a whitening agent, may be included. The composition finds utility as an oral dressing, for example, a tooth whitening composition that is applied to the teeth in need of whitening. The composition can be designed to be removed when the degree of whitening has been achieved or left in place and allowed to erode entirely. In certain embodiments, the composition is translucent. Methods for preparing and using the compositions are also disclosed.
258 Citations
59 Claims
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1. A composition comprising:
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(a) a hydrogel comprising; (i) a water-swellable, water-insoluble polymer; (ii) a blend of a hydrophilic polymer with a complementary oligomer capable of hydrogen or electrostatic bonding to the hydrophilic polymer; and (iii) an active agent; and (b) a backing member, where the backing member is comprised of a polymer composition that erodes in a moist environment at a slower rate than the hydrogel. - 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, 46, 47, 48, 59)
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49. A method for whitening teeth comprising:
applying to teeth in need of whitening a composition comprising; (a) a hydrogel comprising; (i) a water-swellable, water-insoluble polymer; (ii) a blend of a hydrophilic polymer with a complementary oligomer capable of hydrogen or electrostatic bonding to the hydrophilic polymer; and (iii) an active agent; and (b) a backing member, where the backing member is comprised of a polymer composition that erodes in the oral cavity at a slower rate than the hydrogel. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58)
Specification