公开(公告)号：US20160117958A1

公开(公告)日：2016-04-28

申请号：US14523380

申请日：2014-10-24

Applicant: HEXION INC.

Inventor： Andrew LaChapell ,  Jong Guo

IPC: G09F3/10 ,  C09J7/02 ,  C09J133/26

CPC classification number: C09J7/385 ,  B65D65/14 ,  B65D65/38 ,  C08F220/18 ,  C08F2220/1841 ,  C09J4/00 ,  C09J133/08 ,  C09J133/14 ,  C09J133/26 ,  C09J2201/622 ,  C09J2433/003 ,  G09F3/10 ,  G09F2003/0241 ,  Y02P20/582 ,  C08F2220/1858 ,  C08F220/14 ,  C08F220/58 ,  C08K5/24

Abstract: Disclosed are removable pressure sensitive adhesive compositions (PSAs) useful with facestocks and/or packaging labels designed to be removed in the recycling of polymeric packaging. The PSAs of the invention include (a) at least one monomer which may undergo free radical polymerization and whose homopolymer has a glass transition temperature of less than or equal to 10° C., (b) at least one mono-olefinically unsaturated monomer having aldehyde or ketone functionality, and (c) an effective amount of at least one polyhydrazide crosslinker having hydrazine functionality. The PSA composition of the invention exhibits a peel adhesion value of between about 0.4 lbs/in (70 N/m) and about 4 lbs/in (700 N/m), and the percent film remaining on the polymeric packaging after a sink-float testing is 0% to about 8%.

Abstract translation: 公开了可用于在聚合物包装的再循环中被设计为除去的面料和/或包装标签的可去除的压敏粘合剂组合物（PSA）。 本发明的PSA包括（a）至少一种可经历自由基聚合并且其均聚物的玻璃化转变温度小于或等于10℃的单体，（b）至少一种单烯属不饱和单体，其具有 醛或酮官能团，和（c）有效量的至少一种具有肼官能团的聚酰肼交联剂。 本发明的粘合剂组合物表现出约0.4lbs / in（70N / m）至约4lbs / in（700N / m）之间的剥离粘附值，以及在沉降槽之后残留在聚合物包装上的百分比膜， 浮动测试为0％至8％。