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    COMPOSITIONS COMPRISING CLEAVABLE CROSSLINKER AND METHODS
    1.
    发明申请
    COMPOSITIONS COMPRISING CLEAVABLE CROSSLINKER AND METHODS 有权
    包含可清洗交联剂的组合物和方法

    公开(公告)号：US20170066863A1

    公开(公告)日：2017-03-09

    申请号：US15119887

    申请日：2015-04-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jason D. Clapper ,  Dennis E. Vogel ,  Ann Rhea-Helene Fornof ,  Babu N. Gaddam

    IPC: C08F220/18 ,  C08J3/28 ,  C09J5/00 ,  C09J7/02 ,  C09J133/08 ,  C09J5/06

    CPC classification number: C08F220/18 ,  C08F222/1006 ,  C08F2220/1858 ,  C08F2800/20 ,  C08F2810/10 ,  C08J3/28 ,  C08J2333/08 ,  C09J4/00 ,  C09J5/00 ,  C09J5/06 ,  C09J7/385 ,  C09J133/062 ,  C09J133/08 ,  C09J133/10 ,  C09J2205/302 ,  C08F220/06 ,  C08F216/125 ,  C08F2222/1026

    Abstract: A composition is described comprising a polymer. The polymer comprises polymerized units derived from a cleavable crosslinking monomer. The cleavable crosslinking monomer comprises at least two free-radically polymerizable groups and at least one group having the formula —O—C(R2)(R3)—O—, wherein R2 and R3 are independently hydrogen, alkyl, or aryl. The composition has a Tg no greater than 50° C. In some embodiments, the composition has a storage modulus greater than 3×105 Pa at 25° C. and 1 Hz and may be characterized as a non-tacky polymer. In other embodiments, the composition is a pressure sensitive adhesive. Upon cleavage of at least a portion of the polymerized monomeric units derived from the cleavable crosslinking monomer, the composition exhibits a change in at least one physical property. In another embodiment, the composition comprises a polymer and fragments. The fragments comprise the reaction product of a free-radically polymerizable group bonded to a polymer chain and a pendent hydroxyl group. The composition has a Tg no greater than 50° C. Also described are articles, comprising the composition described herein (i.e. before and/or after cleavage); as well as methods of making the composition and methods of making articles.

    Abstract translation: 描述了包含聚合物的组合物。 聚合物包含衍生自可切割交联单体的聚合单元。 可切割交联单体包含至少两个可自由基聚合的基团和至少一个具有式-O-C（R2）（R3）-O-的基团，其中R2和R3独立地是氢，烷基或芳基。 组合物的Tg不大于50℃。在一些实施方案中，组合物在25℃和1Hz下的储能模量大于3×10 5 Pa，并且可以表征为非粘性聚合物。 在其它实施方案中，组合物是压敏粘合剂。 在裂解衍生自可切割交联单体的聚合单体单元的至少一部分时，组合物表现出至少一种物理性质的变化。 在另一个实施方案中，组合物包含聚合物和片段。 这些片段包含与聚合物链键合的可自由基聚合基团和侧基羟基的反应产物。 组合物的Tg不大于50℃。还描述了包含本文所述组合物（即在切割之前和/或之后）的制品; 以及制作制品的方法和方法。

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