Medical tape preparation

A - Human Necessities – 61 – L

Patent

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Details

A61L 15/58 (2006.01) A61K 9/70 (2006.01) A61K 47/14 (2006.01) A61K 47/32 (2006.01) A61K 47/44 (2006.01) C09J 7/02 (2006.01) C09J 133/08 (2006.01) C09J 133/14 (2006.01)

Patent

CA 2588943

A medical tape preparation which comprises a support and, superposed on one side thereof in the following order, a pressure-sensitive adhesive layer and a release liner. The pressure-sensitive adhesive layer can contain a large amount of an oleophilic oily matter. The tape preparation is excellent in adhesion, cohesiveness, and stability even when no crosslinking agent is used. The pressure-sensitive adhesive layer in the medical tape preparation comprises a blend of two tacky polymers, which are a tacky polymer (A) comprising a copolymer obtained from 2-acetoacetoxyethyl methacrylate and other vinyl monomer(s) as constituent ingredients and a tacky polymer (B) comprising a copolymer which is obtained from a C4-10-alkyl (meth)acrylate and other vinyl monomer(s) as constituent ingredients and is different from the tacky polymer (A).

L~invention concerne une préparation de bande médicale qui comprend un support et, superposées sur l~un de ses côtés dans l~ordre indiqué, une couche d~adhésif sensible à la pression et une garniture anti-adhésive. La couche d~adhésif sensible à la pression peut contenir une grande quantité d~une matière huileuse oléophile. La préparation de bande fait preuve d~une adhérence, d~une cohésion et d~une stabilité excellentes, même lorsque aucun agent de réticulation n~est utilisé. La couche d~adhésif sensible à la pression de ladite préparation comprend un mélange de deux polymères collants, à savoir un polymère collant (A) comprenant un copolymère obtenu à partir du méthacrylate de 2-acétoacétoxyéthyle et d~un ou de plusieurs autres monomères vinyliques en tant qu~ingrédients constitutifs et un polymère collant (B) comprenant un copolymère obtenu à partir d~un (méth)acrylate d~un alkyle en C4-10 et d~un ou plusieurs autres monomères vinyliques en tant qu~ingrédients constitutifs, le polymère (B) étant différent du polymère (A).

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