| 摘要 |
本发明欲解决之问题为提供一种能应用于低温、于广泛温度范围(10至40℃)具有极佳黏附力，以及黏着性和固持力之间具有极佳平衡之热熔黏着剂，以及利用该热熔黏着剂所获得之可抛弃式用品。解决此问题之方法为利用一种包含一热塑性嵌段共聚物(A)，其系乙烯类芳香烃和共轭双烯化合物之共聚物，之热熔黏着剂，其中该热塑性嵌段共聚物(A)包含下列成分(A1)和成分(A2)：(A1)具有35至45%重量比苯乙烯含量、50至90%重量比双嵌段含量，以及具有于25℃之25%苯乙烯溶液黏度不超过250mPa．s之辐射式苯乙烯嵌段共聚物；以及(A2)三嵌段式苯乙烯嵌段共聚物。 Problem to be solved of the present invention is to provide a hot-melt adhesive agent which is capable of applying at low temperature, excellent in adhesiveness at the wide temperature ranges (10 to 40℃), and excellent in balance between tackiness and retention force, and a disposable product obtained by employing the hot-melt adhesive agent. Means for Solving the problem is a hot-melt adhesive agent comprising a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises the following component (A1) and component (A2): (A1) a radial type styrene block copolymer having a styrene content of 35 to 45% by weight, a diblock content of 50 to 90% by weight, and has a viscosity at 25℃; and (A2) a triblock type styrene block copolymer. |
