To provide a water dispersion type pressure-sensitive adhesive composition imparting an adhesive sheet which has excellent stability in solvent insoluble part, molecular weight of solvent soluble part and terminal peeling resistance with the passage of time.
The water dispersion type pressure-sensitive adhesive mixture contains a polymer obtained by copolymerizing a monomer composition containing an alkyl (meth)acrylate as a main component and a silane-based monomer. The composition may be a water dispersion type pressure-sensitive adhesive composition which contains a polymer obtained by copolymerizing a monomer mixture which contains an alkyl (meth)acrylate as a main component free from silane-based monomer and giving a resin composition having a solvent-insoluble content of ≤5%, with the silane-based monomer in an amount of 0.005 to 1 pt.wt. per 100 pts.wt. of the monomer mixture under the same condition to the acrylic copolymer.
COPYRIGHT: (C)2007,JPO&INPIT
Kazuhisa Maeda
Tomoya Naito
Michio Umeda
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