Title:
ADHESIVE TAPE
Document Type and Number:
WIPO Patent Application WO/2024/063092
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an adhesive tape having an adhesive layer having excellent retention performance and adhesion even while using a low-molecular-weight (meth)acrylic copolymer. The present invention is an adhesive tape having an adhesive layer, wherein the adhesive layer contains a crosslinked product of an adhesive comprising a (meth)acrylic copolymer, a crosslinking agent, and a tackifying resin, the weight average molecular weight of the (meth)acrylic copolymer in the region of a molecular weight of 5000 or more is from 80,000 to less than 500,000 when the (meth)acrylic copolymer obtained by alkali decomposition of the crosslinking points of the crosslinked product is subjected to GPC measurement by differential refractometer RI detection, the adhesive tape bonded to an SUS plate does not fall off in a retention test that applies a 1 kg load for 24 hours in the shear direction at 80°C, and the 180° peel adhesion force of the adhesive tape to an SUS plate is 15 N/25 mm or more.
Inventors:
KAWAMOTO TOMOYA (JP)
OGATA YUDAI (JP)
TODA TOMOKI (JP)
OGATA YUDAI (JP)
TODA TOMOKI (JP)
Application Number:
PCT/JP2023/034089
Publication Date:
March 28, 2024
Filing Date:
September 20, 2023
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
C09J7/38; C09J7/22; C09J11/06; C09J11/08; C09J133/04; C09J175/04
Domestic Patent References:
| WO2022091395A1 | 2022-05-05 | |||
| WO2016035747A1 | 2016-03-10 |
Foreign References:
| JP2010248465A | 2010-11-04 | |||
| JP2021020986A | 2021-02-18 |
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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