Low-staining adhesive sheets and method for removing resist material
AssigneeNitto Denko Corporation
InventorsEiji Toyoda, Makoto Namikawa, Yoshio Terada
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Abstract
A low-staining adhesive sheet provided with an adhesive layer containing as the main component a pressure-sensitive adhesive polymer on a base film, wherein the pressure-sensitive adhesive polymer is substantially free from oligomeric low-molecular weight matters; and a method for removing a resist material by using this low-staining adhesive sheet. This low-staining adhesive sheet gives no organic staining matters remaining on the surface of article (for example, substrate) to be used as an adherend and is useful in removing a resist material and foreign matters, and re-peeling surface-protectors, masking materials, and other materials.
Claims8
A low-staining adhesive sheet comprising a base film and an adhesive layer comprising a pressure-sensitive adhesive polymer on the base film, wherein the pressure-sensitive adhesive polymer is an acrylic polymer comprising an alkyl(meth)acrylate unit as the main monomer unit, has a degree of molecular weight distribution of 10 or less and is substantially free from low-molecular weight oligomers having a molecular weight of 10,000 or less.
Dependencies are inferred from the claim text.