公开(公告)号：US07175898B2

公开(公告)日：2007-02-13

申请号：US10813195

申请日：2004-03-30

申请人： Bernd Lühmann ,  Philippe Hesse ,  Sianty Sunarto ,  Uwe Schümann ,  Kirstin Weiland ,  Andreas Junghans

发明人： Bernd Lühmann ,  Philippe Hesse ,  Sianty Sunarto ,  Uwe Schümann ,  Kirstin Weiland ,  Andreas Junghans

IPC分类号： B32B9/00 ,  B32B33/00

CPC分类号： C08G18/4866 ,  C08G18/4808 ,  C08G18/4812 ,  C08G18/73 ,  C08G18/755 ,  C08G2170/40 ,  C09J7/22 ,  C09J7/38 ,  C09J2475/00 ,  Y10T428/14 ,  Y10T428/1471 ,  Y10T428/24777 ,  Y10T428/24793 ,  Y10T428/28 ,  Y10T428/2848 ,  Y10T428/2861 ,  Y10T428/2896

摘要： A single-sidedly or double-sidedly pressure-sensitively adhesive, elastic adhesive sheet comprising at least one layer of a pressure-sensitive adhesive, and having a maximum stretchability of more than 200% and a recovery of more than 60% after stretching to ⅔ of its maximum elongation, said pressure-sensitive adhesive (PSA) being based on a chemically crosslinked polyurethane, wherein the starting materials for the chemically crosslinked polyurethane include at least one isocyanate-reactive substance having a functionality of more than 2.0, in an amount of at least 5% by weight, based on the weight of the polyurethane composition, where the molecular weight of at least one of the starting materials used to form the polyurethane is being greater than or equal to 1000, at least one difunctional polyisocyanates are being used to form the polyurethane, and the ratio of maximum tensile stress to stripping stress is of said elastic adhesive sheet being more than 1.2, and the tensile stress at an elongation of 200% is being not more than 2.0 N/mm.sup.2.

摘要翻译： 包括至少一层压敏粘合剂的单面或双面压敏粘合的弹性粘合片，并且在拉伸至2之后具有大于200％的最大拉伸性和60％以上的回复率 所述压敏粘合剂（PSA）基于化学交联的聚氨酯，其中用于化学交联的聚氨酯的起始材料包括至少一种官能度大于2.0的异氰酸酯反应性物质，其中 至少5重量％的量，基于聚氨酯组合物的重量，其中用于形成聚氨酯的至少一种原料的分子量大于或等于1000，至少一种双官能多异氰酸酯是 用于形成聚氨酯，并且最大拉伸应力与剥离应力的比例是所述弹性粘合片大于1.2，并且拉伸强度 在200％的伸长率下不超过2.0N / mm 2。