C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/02 (2006.01)
Patent
CA 2537689
There is disclosed an adhesive sheet comprising an adhesive agent layer formed on a support film containing a plasticizer, and composed of an emulsion which is obtained by subjecting a mixture of ethylenically unsaturated monomers containing components (a) at least 48% by mass of butyl (meth)acrylate, (b) 6 to 22% by mass of methyl methacrylate and (c) 0.5 to 5% by mass of an ethylenically unsaturated carboxylic acid to emulsion polymerization in the presence of a reactive emulsifier in an amount of 0.5 to 5.0 parts by mass based on 100 parts by mass of the mixture of ethylenically unsaturated monomers, and which comprises a polymer having an average particle diameter in the range of 100 to 300 nm. The adhesive sheet is free form adherend contamination due to migration of a plasticizer from a support film containing the plasticizer to an adhesive agent layer, imparted with resistance to water and whitening, minimized in deterioration of adhesive force with the lapse of time, environmentally friendly and advantageous regarding the cost.
Ikeda Fuminori
Tetsumoto Takuya
Lintec Corporation
Smart & Biggar
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