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    • 10. 发明申请
    • ADHESIVE COMPOSITION AND ADHESIVE SHEET
    • 胶粘组合物和粘合片
    • US20140141271A1
    • 2014-05-22
    • US14129210
    • 2012-06-27
    • Kazue UemuraYoshitomo OnoYumiko AminoSatoshi KawadaHanako Ikeda
    • Kazue UemuraYoshitomo OnoYumiko AminoSatoshi KawadaHanako Ikeda
    • C09K3/10C09J7/00
    • C09K3/1006C08L23/20C08L23/22C08L2203/16C08L2205/02C09J7/00C09J7/10C09J123/20C09J123/22C09J2201/622C09J2423/00H01L51/5246H01L51/5253Y10T428/31938
    • Provided is an adhesive sheet having an adhesive layer formed of an adhesive composition that contains 100 parts by mass of a polyisobutylene-based resin (A) having a weight-average molecular weight of from 270,000 to 480,000, from 5 to 55 parts by mass of a polyisobutylene-based resin (B) having a weight-average molecular weight of from 100,000 to 250,000, and from 10 to 55 parts by mass of a hydrogenated petroleum resin (C) having a softening point of from 90 to 135° C.; and provided is an adhesive sheet having at least one adhesive layer wherein the probe tack of the adhesive layer, as measured at a peel rate of 600 mm/min according to JIS-Z0237 (1991), has two maximum values and wherein the first maximum value P1 detected first is at least 4.0 N and the ratio of the second maximum value P2 detected secondarily to the first maximum value P1 [P2/P1] is from 0.25 to 1.50. The adhesive sheets have excellent adhesion force and retention force, can prevent occurrence of zipping, have a low moisture vapor transmission rate, are excellent in transparency and can retard outgas generation.
    • 提供一种粘合剂层,其具有由粘合剂组合物形成的粘合剂层,所述粘合剂组合物含有100质量份的重均分子量为27万至48万的聚异丁烯类树脂(A),5至55质量份的 重均分子量为100,000〜250,000的聚异丁烯类树脂(B)和软化点为90〜135℃的氢化石油树脂(C)10〜55质量份。 并且提供了具有至少一个粘合剂层的粘合片,其中根据JIS-Z0237(1991)以600mm / min的剥离速度测量的粘合剂层的探针粘性具有两个最大值,并且其中第一最大值 首先检测到的值P1至少为4.0N,二次检测的第二最大值P2与第一最大值P1 [P2 / P1]的比值为0.25〜1.50。 粘合片具有优异的粘附力和保持力,可以防止拉伸发生,具有低的蒸汽透过率,透明性优异并且可以延缓产生气体。