公开(公告)号：US20230348763A1

公开(公告)日：2023-11-02

申请号：US18044409

申请日：2021-08-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Yunshu Zhang ,  Jianda Zhang ,  Pu Ren

IPC: C09J133/06 ,  C09J7/10 ,  C09J7/38

CPC classification number: C09J133/066 ,  C09J7/10 ,  C09J7/385 ,  C09J2203/33 ,  C09J2301/416 ,  C09J2433/00 ,  C09J2463/00

Abstract: The present invention provides a UV-curable semi-structural adhesive, and a UV-curable semi-structural adhesive tape. The UV-curable semi-structural adhesive comprises: 30-80 parts by weight of a polymer base material comprising a product prepared by polymerization of an (meth)acrylate composition; 20-70 parts by weight of an epoxy resin; and a photoacid generator, wherein the (meth)acrylate composition comprises: 40-65 parts by weight of a first (meth)acrylate monomer containing a secondary hydroxyl group; 35-60 parts by weight of a second (meth)acrylate monomer; and a free-radical polymerization photoinitiator. The (meth)acrylate composition does not gel when used in the package-sealed UV polymerization process for producing semi-structural adhesives, and have good compatiility with epoxy composition, enabling the production of semi-structural adhesives through a solvent-free process. In addition, the UV-curable semi-structural adhesive is in a paste state and forms a thick adhesive film on the substrate through one-time coating, simplifying the operation and allowing the adhesive layer formed after UV curing to have high adhesion strength.

公开(公告)号：US09920226B2

公开(公告)日：2018-03-20

申请号：US15022003

申请日：2014-09-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Qing Wu ,  Jing Fang ,  Fei Gao ,  Guannan Yin ,  Hui Zong ,  Jianda Zhang ,  Yuting Wan

IPC: C09J133/08 ,  C09J4/06 ,  C09J133/06 ,  C09J9/02

CPC classification number: C09J133/08 ,  C09J4/06 ,  C09J9/02 ,  C09J133/06 ,  C09J133/064 ,  C09J133/068

Abstract: The present invention provides a thermally curable pressure-sensitive adhesive composition, which, based on the total weight of the composition, comprises the following components: a) 35-99% by weight of a reactive polymethacrylate component having a glass transition temperature Tg of −35° C. to 32° C., and having a reactive functional group which can react with benzoxazine to form an interpenetrating polymer network; and b) 1-65% by weight of a benzoxazine component of the following formula: wherein: X is selected from the group consisting of a covalent bond, C1-C6 alkylene, C3-C10 cycloalkylene group, C═O, S, S═O or O═S═O R1 and R2 are the same or different and independently of each other selected from the group consisting of hydrogen, C1-C6 alkyl, or C5-C14 aryl, and R4 is selected from the group consisting of hydrogen, halogen or C1-C6 alkyl. The present invention also provides an electrically conductive adhesive composition and an adhesive tape comprising the above-described composition, and provides for the use of the composition for preparing membranes used for electronic and electrical products, automobile products and new energy equipment.