申请人:SEKISUI CHEMICAL CO., LTD.
公开号:EP1209212A1
公开(公告)日:2002-05-29
An adhesive composition is provided which is flowable, shows a spreadable viscosity and a long pot life, develops cohesion by short-time exposure to a radiation, eliminates the need of temporary fixing, and exhibits the superior resistance to impact and creep after cure.
The adhesive composition contains (X) a compound having a crosslinkable or polymerizable group and (Y) a compound which is activated when exposed to an active energy radiation to generate species that cause crosslinking or polymerization of at least a part of the compound (X); wherein the composition has a viscosity at 25 °C of 1 - 10,000,000 cps, a conversion of the compound (X) immediately after exposure of the adhesive composition to the active energy radiation does not exceed 70 %, a conversion of the compound (X) after exposure of the adhesive composition to the active energy radiation and subsequent 24-hour aging at 25 °C is in the range of 50 - 100 %, and after exposure of the adhesive composition to the active energy radiation and subsequent 24-hour aging at 25 °C, the cured composition has an elongation at break of 10 - 1,000 % and a dynamic tensile modulus in the range of 105-109 Pa.
本发明提供了一种可流动的粘合剂组合物,它具有可涂抹的粘度和较长的固化寿命,通过短时间暴露于辐射而产生内聚力,无需临时固定,固化后具有优异的抗冲击和抗蠕变性能。
该粘合剂组合物包含(X)一种具有可交联或可聚合基团的化合物和(Y)一种化合物,该化合物在暴露于活性能量辐射时被激活,以产生导致至少部分化合物(X)交联或聚合的物质;其中,该组合物在 25 °C 时的粘度为 1 - 10,000,000 cps,在将粘合剂组合物暴露于活性能辐射后,化合物 (X) 的转化率不超过 70%,在将粘合剂组合物暴露于活性能辐射并随后在 25 °C 下进行 24 小时老化后,化合物 (X) 的转化率在 50 - 100 % 之间,以及在将粘合剂组合物暴露于活性能辐射并随后在 25 °C 下进行 24 小时老化后,化合物 (X) 的转化率在 50 - 100 % 之间、将粘合剂组合物暴露于活性能量辐射并随后在 25 °C 下老化 24 小时后,固化组合物的断裂伸长率为 10 - 1,000%,动态拉伸模量在 105-109 Pa 之间。