公开(公告)号：US20150284602A1

公开(公告)日：2015-10-08

申请号：US14743393

申请日：2015-06-18

Applicant: DEXERIALS CORPORATION

Inventor： Noboru ARAKI ,  Tomoyuki ABE ,  Takanori OGATA

IPC: C09J133/08 ,  C09J7/02

CPC classification number: C09J133/08 ,  B32B7/12 ,  B32B15/043 ,  B32B15/088 ,  B32B15/20 ,  B32B25/14 ,  B32B27/40 ,  B32B2605/00 ,  C09J4/00 ,  C09J7/22 ,  C09J7/243 ,  C09J7/26 ,  C09J7/38 ,  C09J133/04 ,  C09J133/06 ,  C09J2201/128 ,  C09J2201/622 ,  C09J2400/243 ,  C09J2423/006 ,  C09J2423/046 ,  C09J2433/00 ,  C09J2433/003 ,  Y10T428/249983

Abstract: In a double-sided adhesive tape in which acrylic-based adhesive layers are formed on respective sides of an electron beam cross-linked polyethylene foam substrate, the acrylic-based adhesive layers are formed from a cured resin composition formed by irradiating a solvent-free photopolymerizable monomer composition containing an acrylic-based monomer and a photopolymerization initiator with ultraviolet rays to photo-polymerize the acrylic-based monomer. The cured resin composition contains an adhesion-imparting polymer having a weight average molecular weight of 2,000 to 10,000, an acrylic-based polymer A obtained by photopolymerization in the absence of a cross-linking agent and having a weight average molecular weight of 700,000 to 3,000,000, and an acrylic-based polymer B obtained by photopolymerization in the absence of a cross-linking agent and having a weight average molecular weight of 350,000 to 650,000. The molecular weight distribution of the cured resin composition measured by gel permeation chromatography using tetrahydrofuran is 2.4 to 4.4.

Abstract translation: 在电子束交联聚乙烯泡沫基材的两侧形成有丙烯酸类粘合剂层的双面胶带中，丙烯酸类粘合剂层由通过照射无溶剂形成的固化树脂组合物形成 含有丙烯酸系单体和光聚合引发剂的紫外线光聚合性单体组合物，使丙烯酸类单体光聚合。 固化树脂组合物含有重均分子量为2,000〜10,000的粘合赋予性聚合物，在不存在交联剂的情况下通过光聚合得到的丙烯酸类聚合物A，其重均分子量为70万〜300万 和在不存在交联剂的情况下通过光聚合得到的丙烯酸系聚合物B，其重均分子量为35万〜65万。 通过使用四氢呋喃的凝胶渗透色谱法测定的固化树脂组合物的分子量分布为2.4〜4.4。