Back to results
US 11,229,582 B2Granted
Patch for tooth attachment able to be removed by tooth brushing
AssigneeLG Household & Health Care Ltd.
InventorsJong-Hoon Kim, Jae-Hyun Ahn, Kwang-Ho Oh, In-Ho Lee, Woo-Sun Shim
Life of this patent
Estimating the term…
Abstract
The present invention provides a patch for attaching to teeth or a surrounding part of teeth, and the patch can be easily removed by tooth brushing alone.
Claims20
A patch for attaching to teeth or a surrounding part of teeth, which comprises:
- a drug layer including a drug component;
- and
- a backing layer which is positioned on one side of the drug layer,
- wherein the backing layer includes a water-soluble polymer and water-insoluble polymer,
- wherein the water-insoluble polymer is at least one selected from the group consisting of cellulose acetate phthalate, shellac, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, methacryloyl ethyl betaine/methacrylate copolymer, methacrylic acid copolymer and aminoalkyl methacrylate copolymer, and
- the water-soluble polymer is at least one selected from the group consisting of polyalkyl vinyl ether-maleic acid copolymer (PVM/MA copolymer), polyvinyl alcohol, polyacrylic acid, Poloxamer 407, polyethyleneoxide (Polyox), polyvinyl pyrrolidone-vinyl acetate copolymer (PVP/VA copolymer), polyvinyl pyrrolidone (PVP), polyquaternium-11, polyquaternium-39, carboxypolymethylene (Carbomer), hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin and sodium alginate,
- wherein a tensile strength of the backing layer is reduced by 50% or more upon moisture absorption, compared to a tensile strength before moisture absorption, and
- wherein the backing layer is capable of being degraded, dispersed into particles and detached by tooth brushing.
5 more elements
A patch for attaching to teeth or a surrounding part of teeth, which comprises:
- a drug layer attached to teeth or a surrounding part of teeth;
- and
- a backing layer which is positioned on one side of the drug layer,
- wherein the backing layer includes a water-soluble polymer and water-insoluble polymer,
- wherein the water-insoluble polymer is at least one selected from the group consisting of cellulose acetate phthalate, shellac, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, methacryloyl ethyl betaine/methacrylate copolymer, methacrylic acid copolymer and aminoalkyl methacrylate copolymer, and
- the water-soluble polymer is at least one selected from the group consisting of polyalkyl vinyl ether-maleic acid copolymer (PVM/MA copolymer), polyvinyl alcohol, polyacrylic acid, Poloxamer 407, polyethyleneoxide (Polyox), polyvinyl pyrrolidone-vinyl acetate copolymer (PVP/VA copolymer), polyvinyl pyrrolidone (PVP), polyquaternium-11, polyquaternium-39, carboxypolymethylene (Carbomer), hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin and sodium alginate,
- wherein the backing layer has a static contact angle which varies over time,
- wherein the backing layer is capable of being degraded by tooth brushing, and dispersed into particles.
5 more elements
A patch for attaching to teeth or a surrounding part of teeth, which comprises:
- a drug layer in contact with teeth or a surrounding part of teeth;
- and
- a backing layer positioned on one side of the drug layer,
- wherein the backing layer includes a polymer having solubility parameter (δ1) of 5 (MPa)1/2 to 22 (MPa)1/2;
- and a polymer having solubility parameter (δ2) of 23.5 (MPa)1/2 to 40 (MPa)1/2,
- wherein the polymer having solubility parameter (δ1) of 5 (MPa)1/2 to 22 (MPa)1/2 is any one selected from the group consisting of cellulose acetate phthalate, shellac, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, methacryloyl ethyl betaine/methacrylate copolymer, methacrylic acid copolymer, aminoalkyl methacrylate copolymer and a mixture thereof, and
- wherein the backing layer is capable of being degraded, dispersed into particles and detached by tooth brushing.
4 more elements
Dependencies are inferred from the claim text.