公开(公告)号：US20230048315A1

公开(公告)日：2023-02-16

申请号：US17865857

申请日：2022-07-15

Applicant: NITTO DENKO CORPORATION

Inventor： Amane SAWAMURA ,  Shuhei YAMAMOTO ,  Keisuke SHIMOKITA ,  Hayata MATSUMOTO ,  Yasuhito INAI

IPC: C09J7/38 ,  C09J7/10 ,  C09J133/08 ,  C09J167/00

Abstract: A water-dispersed pressure-sensitive adhesive composition of the present invention includes a water-dispersible polymer, a carboxylic acid copolymer thickener, a polyacrylic acid thickener, and water. A ratio of the carboxylic acid copolymer thickener in the solid content of the water-dispersed pressure-sensitive adhesive composition is 0.1% by mass or more and 1.5% by mass or less. A ratio of the polyacrylic acid thickener in the solid content of the adhesive composition is 1% by mass or more and 3.7% by mass or less. A pressure-sensitive adhesive sheet of the present invention has a pressure-sensitive adhesive layer formed from the water-dispersed pressure-sensitive adhesive composition.