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公开(公告)号：US20230407136A1
公开(公告)日：2023-12-21
申请号：US17802826
申请日：2021-03-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Alexander J. Kugel , Matthew T. Holbrook , Nicholas W. Lang , Dean A. Miner , Scott M. Spear , Kristen L. Bellmer , Benjamin J. Bending , Vincent Jusuf , Daniel M. Peppin
CPC classification number: C09J5/02 , C09J5/06 , C09J7/385 , C09J7/35 , C09J7/10 , C09J2301/302 , C09J2301/304 , C09J2301/414 , C09J2433/00
Abstract: Articles comprising, in order: a first adherend, a first primer layer, an adhesive layer, and a second adherend are provided, where the adhesive layer comprises pressure sensitive adhesive domains and structural adhesive domains. Typically, the first primer layer covers first portions of the first adherend adjacent to structural adhesive domains and does not cover second portions of the first adherend adjacent to pressure sensitive adhesive domains. Methods of making such articles are provided, which comprise applying a cure-initiating primer to first portions of the first adherend to form a first primer layer while leaving second portions of the first adherend bare of the first primer layer, and thereafter applying a curable adhesive film over the first primer layer, such that portions of the curable adhesive film are cured to form structural adhesive domains and other portions remain uncured pressure sensitive adhesive domains.
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公开(公告)号：US20230088278A1
公开(公告)日：2023-03-23
申请号：US17802839
申请日：2021-03-03
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Alexander J. Kugel , Dean A. Miner , Matthew T. Holbrook , Nicholas W. Lang , Kristen L. Bellmer , Scott M. Spear
IPC: C09D5/00 , C09J5/06 , C09D133/08 , B32B43/00
Abstract: Debonding methods comprise: providing a bound article comprising, in order: a first adherend, a first primer layer, an adhesive layer, optionally a second primer layer, and a second adherend; heating the article to a release temperature; and separating the first and second adherends. At room temperature, the adhesive layer exhibits a high overlap shear of greater than 1.0 MPa (145 psi) or even greater than 5.0 MPa (725 psi), however, at release temperature, the adhesive layer exhibits an overlap shear of no more than 0.34 MPa (50 psi) or even no more than 0.21 MPa (30 psi). The release temperature may be a temperature between 100° C. and 150° C. The adhesive layer may comprise: a first film-forming polymer or oligomer; a cured polymer comprising a polymer of a first species comprising first unsaturated free-radically polymerizable groups; a first transition metal cation; and optionally a quaternary ammonium salt.
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公开(公告)号：US12247145B2
公开(公告)日：2025-03-11
申请号：US17802826
申请日：2021-03-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Alexander J. Kugel , Matthew T. Holbrook , Nicholas W. Lang , Dean A. Miner , Scott M. Spear , Kristen L. Bellmer , Benjamin J. Bending , Vincent Jusuf , Daniel M. Peppin
Abstract: Articles comprising, in order: a first adherend, a first primer layer, an adhesive layer, and a second adherend are provided, where the adhesive layer comprises pressure sensitive adhesive domains and structural adhesive domains. Typically, the first primer layer covers first portions of the first adherend adjacent to structural adhesive domains and does not cover second portions of the first adherend adjacent to pressure sensitive adhesive domains. Methods of making such articles are provided, which comprise applying a cure-initiating primer to first portions of the first adherend to form a first primer layer while leaving second portions of the first adherend bare of the first primer layer, and thereafter applying a curable adhesive film over the first primer layer, such that portions of the curable adhesive film are cured to form structural adhesive domains and other portions remain uncured pressure sensitive adhesive domains.
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公开(公告)号：US20250051614A1
公开(公告)日：2025-02-13
申请号：US18720307
申请日：2022-12-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Alexander J. Kugel , Nicholas W. Lang , Tzu-Yu Lai , Dean A. Miner , Matthew T. Holbrook , Scott M. Spear , Kristen L. Bellmer , Frank Kuester , Hans Peter Dette , Kerstin Unverhau , Silke Mechernich , Duane D. Fansler , Anthony F. Schultz , Jonathan E. Janoski
Abstract: An adhesive system comprising a tape and an activator, wherein the activator includes an oxidizing agent and is a liquid at normal temperature and pressure; and wherein the tape includes a curable adhesive free-standing film adjacent to a curable foam support layer, wherein the curable adhesive free-standing film comprises: a) a film-forming polymer or oligomer; b) a species comprising unsaturated free-radically polymerizable groups, which may be a) or a species other than a); and c) a transition metal cation.
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