| 摘要 |
Heat-activable adhesive sheet furnished with an adhesive comprising a blend of at least three synthetic nitrile rubbers, S1, S2 and S3, and at least one reactive resin which is capable of crosslinking with itself, with other reactive resins and/or with the nitrile rubbers S1, S2 and S3, a) the blend of the heat-activable sheet being microphase-separated, characterized by at least three different glass transition temperatures in the DSC, b) the blend of the heat-activable sheet possessing at least 3 glass transition temperatures, at least one glass transition temperature being greater than 10°C and one glass transition temperature lower than-20°C, c) the nitrile rubber or rubbers S1 having an acrylonitrile fraction of greater than/equal to 35%, d) the nitrile rubber or rubbers S2 having an acrylonitrile fraction of greater than 25% and less than 35%, e) the nitrile rubber or rubbers S3 having an acrylonitrile fraction of less than/equal to 25%. |
