公开(公告)号：WO2021220090A1

公开(公告)日：2021-11-04

申请号：PCT/IB2021/052959

申请日：2021-04-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： CHEN, Lianzhou ,  ELGIMIABI, Sohaib ,  SALNIKOV, Dimitriy ,  SCHLECHTE, Jay S. ,  CHEN, Yaoyao

IPC: C08G59/42 ,  C08G59/50

Abstract: Provided is a curative part usable in a two-part curable composition. The curative part includes a liquid amine; a heterogeneous dispersant; and core-shell rubber particles having an elastomeric core and a (meth)acrylic shell. The core-shell rubber particles and the heterogeneous dispersant can be collectively shear-dispersed in the liquid amine such that the core-shell rubber particles are substantially non-aggregated and the curative part is phase-stable over a period of at least 3 months at ambient temperature. Advantageously, large amounts of core-shell rubber particles can thus be incorporated into a cured resin matrix, which can afford significantly enhanced impact performance.

公开(公告)号：WO2022263943A1

公开(公告)日：2022-12-22

申请号：PCT/IB2022/054695

申请日：2022-05-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： SCHLECHTE, Jay S. ,  CHEN, Yaoyao ,  THOMPSON, Zachary J. ,  CHEN, Lianzhou ,  WHITE, Kolby L. ,  STOUT, George M.

IPC: C09J163/00 ,  C08G59/18 ,  C08G59/50 ,  C08G59/62 ,  C08L63/00

Abstract: A curable composition and a method of making a cured composition are provided. The curable composition contains at least two parts with the first part containing three different types of curing agents that contain multiple -NHR1 groups (R1 is hydrogen, alkyl, aryl, aralkyl, or alkaryl) and with the second part containing an epoxy resin. The first part composition and the second part compositions are selected to control the rheology of the curable composition both before and after combination of the first part with the second part.

公开(公告)号：WO2022084855A1

公开(公告)日：2022-04-28

申请号：PCT/IB2021/059625

申请日：2021-10-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： WANG, Shujun J. ,  GORRELL, Robin E. ,  GRISLE, Roger A. ,  LIU, Richard Y. ,  CHEN, Yaoyao

IPC: H01L21/683 ,  H01L21/304 ,  C09J7/38 ,  C09J107/00 ,  C09J119/00

Abstract: An article includes a substrate having a circuit forming surface and a non-circuit forming surface opposite the circuit forming surface. The article further includes a protective tape borne on the circuit forming surface. The protective tape includes a support layer and a curable adhesive layer borne on a major surface of the support layer. The curable adhesive layer includes a rubber elastomer and a thermal curing agent.