| 摘要 |
PURPOSE: To obtain a pressure-sensitive adhesive composition which can decrease in its peeling force by heating without forming combustible gases, etc., in a sage working environment by dispersing a specified inorganic salt in a pressure- sensitive adhesive component. CONSTITUTION: A pressure-sensitive adhesive composition is prepared by dispersing 0.5-200 pts.wt. inorganic salt particles of a mean particle diameter of 0.5-100μm and water of crystallization which can be removed at 50-150 deg.C. The composition may comprises a pressure-sensitive adhesive base and a tackifier. This base may further contain a plasticizer, a cross-linking agent and a filler. The amount of the tackifier added is desirably 1-70 pts.wt. per 100 pts.wt. above base. Examples of the inorganic salts include FeSo4 .7H2 O and Na2 S2 O3 .5H2 O.
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