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    ELASTIC ONE-PART STRUCTURAL ADHESIVE TAPE
    2.
    发明申请
    ELASTIC ONE-PART STRUCTURAL ADHESIVE TAPE 有权

    公开(公告)号：US20220177738A1

    公开(公告)日：2022-06-09

    申请号：US17441321

    申请日：2020-03-30

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Adrian T. Jung ,  Boris Tasch

    IPC分类号： C09J7/38 ,  C09J7/10 ,  C09J11/06

    摘要： The present disclosure relates generally to the field of adhesives, more specifically to the field of structural adhesive tapes, in particular for use in bonding metal parts. The present disclosure also relates to a method of bonding two parts and to a composite article. The present disclosure is further directed to the use of a structural adhesive tape for industrial applications, such as construction and automotive applications, in particular for body-in-white bonding applications in the automotive industry.

    Two-part adhesive composition that undergoes a visual change when cured
    4.
    发明授权
    Two-part adhesive composition that undergoes a visual change when cured 有权

    公开(公告)号：US11198802B1

    公开(公告)日：2021-12-14

    申请号：US17297173

    申请日：2019-12-18

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Adrian T. Jung ,  Mareike Bardts ,  Dirk Hasenberg

    IPC分类号： C09J163/00 ,  C08G59/24 ,  C08G59/54 ,  C08G59/50 ,  C08G59/56 ,  C09J9/00 ,  C09J5/06 ,  C08K5/00 ,  C08L63/00

    摘要： The present disclosure provides a method for bonding parts, comprising the following steps (a) Providing a two-component adhesive composition precursor, comprising a first part (A) comprising at least one epoxy curing agent and preferably at least one first dye; a second part (B) comprising at least one second dye different from the at least one first dye and at least one epoxy resin; (b) Mixing part (A) and part (B) of the two-component adhesive composition precursor so as to obtain an adhesive composition; (c) Applying the adhesive composition onto a first part; (d) Applying a second part onto the adhesive composition applied to the first part; and then performing a first curing step at a first temperature, wherein the adhesive composition undergoes a first colour change; or (e) Performing a first curing step at a first temperature, wherein the adhesive composition undergoes a first colour change, and then applying a second part onto the adhesive composition applied to the first part; (f) Perform a second curing step at a second temperature higher than the first temperature, thereby fully curing the adhesive composition so as to obtain a structural adhesive bond between the first and second parts, wherein the adhesive composition undergoes a second colour change.

    POLYMERIC MATERIAL INCLUDING A URETDIONE-CONTAINING MATERIAL AND A THERMALLY ACTIVATABLE AMINE, TWO-PART COMPOSITIONS, AND METHODS
    5.
    发明申请
    POLYMERIC MATERIAL INCLUDING A URETDIONE-CONTAINING MATERIAL AND A THERMALLY ACTIVATABLE AMINE, TWO-PART COMPOSITIONS, AND METHODS 有权

    公开(公告)号：US20210317252A1

    公开(公告)日：2021-10-14

    申请号：US17265049

    申请日：2019-09-19

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Kolby L. White ,  Matthew J. Kryger ,  Joseph D. Rule ,  Michael A. Kropp ,  Adrian T. Jung

    IPC分类号： C08G18/22 ,  C08G18/28 ,  C08G18/32 ,  C08G18/42 ,  C08G18/48 ,  C08G18/50 ,  C08G18/78 ,  C08G18/79 ,  C08G18/80 ,  C08G59/40 ,  C08G59/50 ,  C09D175/12 ,  C09J175/12 ,  B32B7/12 ,  B32B37/12

    摘要： The present disclosure provides a polymeric material including a polymerized reaction product of a polymerizable composition including components, and a thermally activatable amine curative, and has a solids content of 90% or greater. The components include a uretdione-containing material including a reaction product of a diisocyanate reacted with itself; a first hydroxyl-containing compound; and an optional second hydroxyl-containing compound having a single OH group. The first hydroxyl-containing compound has more than one OH group and the optional second hydroxyl-containing compound is a primary alcohol or a secondary alcohol. The present disclosure also provides a two-part composition, in which a polymeric material is included in the first part and the second part includes at least one liquid amine. Further, a method of adhering two substrates is provided, including obtaining a two-part composition; combining at least a portion of the first part with at least a portion of the second part to form a mixture; disposing at least a portion of the mixture on a first substrate; and contacting a second substrate with the mixture disposed on the first substrate. The disclosure also provides a polymeric material and a method of curing a two-part composition. Advantageously, two-part compositions according to the present disclosure can be used as coatings and adhesive systems having a two-step cure with handling and performance similar to existing two-part urethane systems, but with less sensitivity to water.