ADHESIVE FOR SKIN APPLICATION AND ADHESIVE TAPE

• Main Authors: SUGASAWA MASUMI, FUKUTA KATSUNORI
• Format: Patent
• Language: English; Japanese
• Published: 28.06.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DYES; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PAINTS; PERFORMING OPERATIONS; POLISHES; PROSTHESES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

To provide an adhesive tape for skin application having both excellent adhesion to the skin but no adhesive residue on the skin when peeled off and excellent moisture permeability, which does not cause skin problems such as skin rash or irritation due to moisture and has water resistance so that the tape does not peel off from the skin or a base material without decrease in adhesive strength after application and to provide an adhesive for forming the adhesive tape for skin application.SOLUTION: There is provided an adhesive for skin application which comprises an acrylic copolymer (A) of a monomer mixture containing a specific amount of each of an alkyl (meth)acrylate monomer having an alkyl group having 4 to 8 carbon atoms (a-1), an alkoxyalkyl (meth)acrylate monomer (a-2), a vinyl monomer having an amide group (a-3), a vinyl monomer having an acid group (a-4) and a vinyl monomer having a hydroxyl group (a-5), wherein [(a-4)/(a-5)] is 5 to 300.SELECTED DRAWING: None 【課題】皮膚への密着性が高く、しかし剥離時に粘着剤が皮膚に残留しない優れた粘着力と、水分により皮膚がカブレやムレなどの皮膚障害を起こさず、かつ貼付後も粘着力の低下がなく、テープが皮膚や基材から剥がれない耐水性を有する、優れた透湿性とを両立した、皮膚貼付用粘着テープおよび該皮膚貼付用粘着テープを形成するための粘着剤の提供することである。【解決手段】それぞれ特定量の、炭素数４～８のアルキル基を有するアルキル（メタ）アクリレートモノマー（ａ－１）、アルコキシアルキル（メタ）アクリレートモノマー（ａ－２）、アミド基を有するビニル系モノマー（ａ－３）、酸基を有するビニル系モノマー（ａ－４）、及び水酸基を有するビニル系モノマー（ａ－５）を含むモノマー混合物のアクリル共重合体（Ａ）を含み、［（ａ－４）／（ａ－５）］が５～３００である、皮膚貼付用粘着剤により解決される。【選択図】なし