Title:
CROSSLINKED POLYESTER RESIN, ADHESIVE COMPOSITION, AND ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/063386
Kind Code:
A1
Abstract:
A purpose of the present invention is to provide an adhesive sheet having excellent insulation breakdown reliability and sheet life at room temperature while having high adhesiveness, high heat resistance, and high strength between a resin substrate such as a polyimide film and a metal substrate such as copper foil, and a crosslinked polyester resin suited thereto. A crosslinked polyester resin (C) having in a side chain a structure in which a polyester resin (A) having a carboxy group and an epoxy compound (B) have reacted, the time for the relaxation modulus, measured at 180°C at a shear strain of 10% with a normal stress of 0.1 N applied using a rheometer, to reach 0.37 times the initial relaxation modulus being 1×101 seconds to 1×104 seconds, and having at least one of the following configurations (1) and (2). (1) Contains a transesterification catalyst (D). (2) The epoxy compound (B) is an epoxyamine compound (E) having a tertiary amino group.
Inventors:
UCHIYAMA SHOKO (JP)
TANAKA HIDEKI (JP)
HAYASHI MIKIHIRO (JP)
TANAKA HIDEKI (JP)
HAYASHI MIKIHIRO (JP)
Application Number:
PCT/JP2022/038205
Publication Date:
April 20, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08G59/20; C08G59/42; C08G63/91; C08L67/02; C09J7/35; C09J163/00; C09J167/00; H05K1/03
Domestic Patent References:
| WO2018105543A1 | 2018-06-14 | |||
| WO2018179707A1 | 2018-10-04 | |||
| WO2021200713A1 | 2021-10-07 | |||
| WO2022080470A1 | 2022-04-21 | |||
| WO2022080469A1 | 2022-04-21 |
Foreign References:
| JP2019119872A | 2019-07-22 | |||
| JP2014141603A | 2014-08-07 | |||
| JP2021066865A | 2021-04-30 | |||
| JP2018193537A | 2018-12-06 |
Attorney, Agent or Firm:
USFI PATENT ATTORNEYS INTERNATIONAL OFFICE (JP)
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