摘要:
A composition for production of a crosslinkable pressure-sensitive adhesive for skin, obtained by dissolving in a solvent 100 parts by weight of an acrylic copolymer (copolymer A) comprising a (meth)acrylic acid alkyl ester as the main constituent component and 3-45 wt % diacetoneacrylamide as an essential constituent component, and containing no free carboxyl groups, and 0.1-30 parts by weight of an acrylic copolymer (copolymer B) comprising a (meth)acrylic acid alkyl ester as the main constituent component and a primary amino group and/or carboxyhydrazide group on a side chain, and containing no free carboxyl groups.
摘要:
It is an object of the invention to provide a crosslinkable pressure-sensitive adhesive for skin that exhibits satisfactory adhesion and releasability for human skin and low irritation to skin, and a crosslinkable pressure-sensitive adhesive sheet for skin that is suitable for medical and cosmetic use, as well as to provide a composition for production of a crosslinkable pressure-sensitive adhesive for skin that has superior storage properties and is suitable for preparation of the crosslinkable pressure-sensitive adhesive for skin. The crosslinkable pressure-sensitive adhesive for skin of the invention is formed by 100 parts by weight of an acrylic copolymer (copolymer A) comprising a (meth) acrylic acid alkyl ester as the main constituent component and 3-45 wt % diacetoneacrylamide as an essential constituent component, and containing no free carboxyl groups, and 0.1-30 parts by weight of an acrylic copolymer (copolymer B) comprising a (meth)acrylic acid alkyl ester as the main constituent component and a primary amino group and/or carboxyhydrazide group on a side chain, and containing no free carboxyl groups. A composition of copolymer A and copolymer B dissolved in a solvent containing at least 5.0 wt % acetone and/or butanone with respect to the total amount of solvent can be stored for prolonged periods.
摘要:
A composition for production of a crosslinkable pressure-sensitive adhesive for skin, obtained by dissolving in a solvent 100 parts by weight of an acrylic copolymer (copolymer A) comprising a (meth)acrylic acid alkyl ester as the main constituent component and 3-45 wt % diacetoneacrylamide as an essential constituent component, and containing no free carboxyl groups, and 0.1-30 parts by weight of an acrylic copolymer (copolymer B) comprising a (meth)acrylic acid alkyl ester as the main constituent component and a primary amino group and/or carboxyhydrazide group on a side chain, and containing no free carboxyl groups.
摘要:
This invention is concerned with transdermal immune preparations which can exhibit a high immunological activity without containing any adjuvant, methods for producing the preparation, and transdermal immunization methods using the preparation.The transdermal immune preparations can regulate the immune response by applying the preparation to an intact skin, and which comprises a base material and an antigen or artificial synthetic nucleic acid laminated on the surface of the base material; the methods for producing transdermal immune preparations which comprises putting drops of an aqueous solution or suspension prepared by dissolving or suspending an antigen in water or a water-containing alcohol on the surface of a base material in order for the water or the water-containing alcohol to be absorbed in the base material, thereby forming an layer containing the antigen in a concentrated state on the surface of the base material; and the transdermal immunization methods which is characterized by applying the transdermal immune preparation to an intact skin to regulate the immune response.
摘要:
The present invention provides a microneedle array which holds a drug only in the microneedle portions, and a method of manufacturing the same.The microneedle array 2A which holds the drug only on the tips of the microneedles can be manufactured by the microneedle deposition method, i.e. a) the microneedle array 2 is prepared using an water-soluble polymer as a base material; b) a drug solution 1 to be applied to the tips of the microneedle array 2 is prepared; and c) the tips of the microneedle array 2 are contacted with the drug solution 1 for a short time. When the drug solution 1 is a water solution, the biodegradable polymer is of water-soluble, and in addition to the drug, the biodegradable polymer is dissolved in the solution at high concentration, the applied drug is integrated with the microneedle so that only the drug does not fall away during insertion.
摘要:
This invention is to provide a diffusion testing device to facilitate determination of diffusivity of prolonged release of drugs from transdermal therapeutic preparation.The diffusion testing device is characterized by a receptor liquid reservoir; a diffusion testing cell having a receptor chamber functioning to be full of receptor liquid and within which a stirrer be placed, a receptor liquid supply unit, a thermostat bath to hold the diffusion testing cell, a stirring apparatus located beneath the thermostat bath to cause the rotation action of the stirrer set in the receptor chamber, a sampling unit permitting sampling and storage of receptor liquid dissolving permeated drugs. Said receptor liquid reservoir, said receptor chamber, said receptor liquid supply unit and said sampling unit are connected with each other via infusion tube. Said thermostat bath comprises aperturees or through-holes functioning to hold the diffusion testing cells, and metal block which has temperature regulation unit to be installed.
摘要:
Microneedle device is provided, which include microneedles that can be easily inserted into skin and dissolve or swell in skin. The microneedle devices comprise a substrate and cone-shaped or pyramid-shaped microneedles for skin insertion set on the substrate. The microneedles for skin insertion contain over 50 weight percent of one or multiple biomaterials chosen from chitosan, collagen, gelatin, hyaluronic acid, and they are fabricated from the materials that can dissolve or swell in the body.
摘要:
The present invention provides a microneedle array which holds a drug only in the microneedle portions, and a method of manufacturing the same.The microneedle array 2A which holds the drug only on the tips of the microneedles can be manufactured by the microneedle deposition method, i.e. a) the microneedle array 2 is prepared using an water-soluble polymer as a base material; b) a drug solution 1 to be applied to the tips of the microneedle array 2 is prepared; and c) the tips of the microneedle array 2 are contacted with the drug solution 1 for a short time. When the drug solution 1 is a water solution, the biodegradable polymer is of water-soluble, and in addition to the drug, the biodegradable polymer is dissolved in the solution at high concentration, the applied drug is integrated with the microneedle so that only the drug does not fall away during insertion.
摘要:
A percutaneous administration type pharmaceutical preparation in tape form comprising a flexible backing, which is not permeable by the active ingredient, and an adhesive base layer formed on said flexible backing; said adhesive base layer consisting essentially of an adhesive base material, ingredients, and an active ingredient, wherein said adhesive base is a copolymer containing one or more (meth) alkyl acrylate monomers and one or more monomers copolymerizable with the (a) monomer selected from the group of unsaturated ethylenically unsaturated monomers, and said ingredients are diethylene glycol monocetyl ether, octanoic acid and/or oleic acid, lauric acid diethanolamide, polyvinylpyrollidone; and said active ingredient is fentanyl.
摘要:
A microneedle array is provided which has (1) the strength to withstand insertion into the skin surface layer and/or stratum corneum, (2) the fineness and flexibility to cause no pain or bleeding in the skin surface layer and/or stratum corneum at the insertion site of the microneedles, and (3) solubility or biodegradability of the microneedle portions under the skin. The microneedle array is produced by forming microneedles using proteoglycan as a base material.