公开(公告)号：US20170298163A1

公开(公告)日：2017-10-19

申请号：US15638469

申请日：2017-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jason D. Clapper ,  Dennis E. Vogel ,  Ann R.H. Fornof ,  Babu N. Gaddam

IPC: C08F220/18 ,  C08J3/28 ,  C09J4/00 ,  C09J5/06 ,  C09J133/08 ,  C09J5/00 ,  C09J7/02 ,  C09J133/10 ,  C08F222/10 ,  C09J133/06

CPC classification number: C08F220/18 ,  C08F220/26 ,  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.

公开(公告)号：US20200283660A1

公开(公告)日：2020-09-10

申请号：US16066108

申请日：2016-12-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Raj Rajagopal ,  Audrey A. Sherman ,  Scott M. Tapio ,  Masayuki Nakamura ,  Ann R.H. Fornof

IPC: C09J11/08 ,  C09J7/38 ,  C09J5/00 ,  B32B27/06 ,  B32B37/12 ,  B32B37/24 ,  B32B37/02

Abstract: Pressure sensitive adhesive articles include a substrate, and a layer of pressure sensitive adhesive in contact with the substrate. The pressure sensitive adhesive layer includes a pressure sensitive adhesive matrix, and at least one active enzyme dispersed within the pressure sensitive adhesive matrix. The active enzyme remains active for extended periods of time.