Patent ID: 8501836
Filing Date: 2013-08-06
Classification: C08K,C08L,C09J

Abstract:
1. An adhesive composition, containing an adhesive resin, a moisture absorbent showing a pH property of acidity or basicity by absorption of moisture, and a pH control material showing a pH property opposite to the pH property that the moisture absorbent shows when absorbing the moisture, and a plasticizer, wherein the adhesive resin is a vinyl chloride resin, wherein the pH control material is an acrylic resin consisting of core-shell particles including a core part and a shell part, the core part comprising a polymer having an affinity to the plasticizer and the shell part comprising a polymer having no affinity to the plasticizer, wherein the moisture absorbent is blended within a range of 0.3 to 2.0% by weight and the acrylic resin as the pH control material is blended within a range of 2.0% by weight or more to less than 7.0% by weight, and wherein a blending ratio of the moisture absorbent is not more than one half of a blending ratio of the acrylic resin as the pH control material.