公开(公告)号：US20200263061A1

公开(公告)日：2020-08-20

申请号：US15733023

申请日：2018-11-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Becky A. Jetto ,  David T. Amos ,  Jeffrey A. Peterson ,  Scott A. Van Wert

IPC: C09J7/50 ,  C09J7/38

Abstract: Primer layers for adhesion of a pressure sensitive adhesive material to a substrate are provided. The primer layer comprises a crosslinked polymer. In some embodiments, the primer layer has an atomic nitrogen content of greater than 6 wt %, and in some a ratio of atomic weight percent of oxygen to nitrogen of less than 3.0. In some embodiments the crosslinked polymer is the reaction product of an amine-functional base polymer such as a polyethylenimine (PEI) and a crosslinker, which may be a polyaziridine crosslinker. Also provided are two-layer constructions comprising the primer layer and a substrate layer; and tapes, such as flexographic plate mounting tapes, comprising the two-layer construction and a pressure sensitive adhesive layer.

公开(公告)号：US20210260806A1

公开(公告)日：2021-08-26

申请号：US17253858

申请日：2019-06-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ramasubramani Kuduva Raman Thanumoorthy ,  Becky A. Jetto ,  Dedra V. Dunevant ,  Ronald W. Ausen ,  William J. Kopecky ,  James J. Kobe ,  Robert T. Krasa

IPC: B29C48/11 ,  B32B3/26 ,  B32B5/20 ,  B32B5/32 ,  B29C48/21 ,  B29C48/30

Abstract: Coextruded articles comprising first and second layers each having first and second opposed major surfaces and between the first and second layers a series of first walls providing a series of microchannels, and methods for making the same. Embodiment of coextruded articles described herein are useful, for example, in cushioning applications where high levels of compression are desired.

公开(公告)号：US20230037449A1

公开(公告)日：2023-02-09

申请号：US17787463

申请日：2020-12-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Robert T. Krasa ,  James J. Kobe ,  Becky A. Jetto ,  Dedra V. Dunevant ,  Ronald W. Ausen ,  William J. Kopecky ,  Ramasubramani Kuduva Raman Thanumoorthy

IPC: B32B3/26 ,  B32B5/18 ,  B29C44/50 ,  B29C44/34 ,  B29C44/56 ,  B29C44/24 ,  B29C48/305 ,  C09J7/38 ,  C09J7/29

Abstract: Pressure sensitive adhesive-coated articles comprising first and second layers each having first and second opposed major surfaces and between the first and second layers a series of first walls providing a series of microchannels, and methods for making the same. Embodiment of articles described herein are useful, for example, in cushioning applications where high levels of compression are desired.

公开(公告)号：US20220204817A1

公开(公告)日：2022-06-30

申请号：US17609061

申请日：2020-05-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Becky A. Jetto ,  Yu Yang ,  Chunjie Zhang ,  Jeffrey A. Peterson ,  Siwei Leng ,  Derrick M. Poirier

IPC: C09J7/50 ,  C09J7/25 ,  C09J7/38

Abstract: Primer layers for adhesion of pressure sensitive adhesive materials to substrates comprise a cured primer which is the reaction product of an epoxy resin and a polyamine. The epoxy resin may be an aromatic epoxy resin. The polyamine may be a polymer such as polyethylenimine (PEI) or polyvinylamine (PVA). Two-layer constructions comprise the primer layer according to the present disclosure and a substrate layer, which may be directly bound to the primer layer. The substrate layer may comprise one or more polyester polymers, may comprise one or more polymers comprising aromatic groups, and/or may comprise polyethylene terephthalate (PET). Tapes comprise the two-layer construction according to the present disclosure and a pressure sensitive adhesive layer, which may be directly bound to the primer layer. The tape may comprise a second pressure sensitive adhesive layer borne on the opposite face of the tape and optionally a foam layer.

公开(公告)号：US20210324243A1

公开(公告)日：2021-10-21

申请号：US17252599

申请日：2019-06-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Christopher W. Cox ,  Sarang V. Deodhar ,  Albert I. Everaerts ,  Becky A. Jetto ,  James J. Kobe ,  Meredith A. Opatz ,  Carla S. Thomas

IPC: C09J7/38 ,  C09J7/25 ,  C25D11/02 ,  C25D11/04

Abstract: A tape includes: a flexible backing layer having two major surfaces, wherein the backing layer has a thickness of greater than 25 micrometers; and an acrylic-based pressure sensitive adhesive layer disposed on one major surface of the backing layer, wherein the acrylic-based pressure sensitive adhesive comprises the reaction of one or more (C8-C20)alkyl acrylates with one or more reinforcing monomers having a homopolymer Tg of at least 50° C., wherein the acrylic-based pressure sensitive adhesive has a tan δ of at least 0.5 measured at 80° C. and an oscillating frequency of 1 radian/second, and wherein the acrylic-based pressure sensitive adhesive layer has a thickness of at least 5 micrometers; wherein, when disposed on an aluminum substrate, the tape displays clean removal from the aluminum substrate according to the Clean Removal Test described in the Examples Section, and a leakage distance of less than 762 micrometers according to the Chromic Acid Anodization-Leakage Distance Test described in the Examples Section. A method of anodizing an aluminum surface includes: providing a substrate having an aluminum surface; applying a tape as described herein to mask the aluminum surface and form a masked substrate; and exposing the masked substrate to an electrolyte solution including chromic acid under conditions effective to form aluminum oxide.